)]}' { "log": [ { "commit": "f429ee3b808118591d1f3cdf3c0d0793911a5677", "tree": "96d848f5f677d96758ecd2aee5eb6931b75bf218", "parents": [ "22b4eb5e3174efb49791c62823d0cccc35394c36", "c158a35c8a681cf68d36f22f058f9f5466386c71" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 17 16:06:51 2012 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 17 16:41:31 2012 -0800" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit: (29 commits)\n audit: no leading space in audit_log_d_path prefix\n audit: treat s_id as an untrusted string\n audit: fix signedness bug in audit_log_execve_info()\n audit: comparison on interprocess fields\n audit: implement all object interfield comparisons\n audit: allow interfield comparison between gid and ogid\n audit: complex interfield comparison helper\n audit: allow interfield comparison in audit rules\n Kernel: Audit Support For The ARM Platform\n audit: do not call audit_getname on error\n audit: only allow tasks to set their loginuid if it is -1\n audit: remove task argument to audit_set_loginuid\n audit: allow audit matching on inode gid\n audit: allow matching on obj_uid\n audit: remove audit_finish_fork as it can\u0027t be called\n audit: reject entry,always rules\n audit: inline audit_free to simplify the look of generic code\n audit: drop audit_set_macxattr as it doesn\u0027t do anything\n audit: inline checks for not needing to collect aux records\n audit: drop some potentially inadvisable likely notations\n ...\n\nUse evil merge to fix up grammar mistakes in Kconfig file.\n\nBad speling and horrible grammar (and copious swearing) is to be\nexpected, but let\u0027s keep it to commit messages and comments, rather than\nexpose it to users in config help texts or printouts.\n" }, { "commit": "e268337dfe26dfc7efd422a804dbb27977a3cccc", "tree": "59b9e22b0de119f0d85f329fa481d965cf7aec42", "parents": [ "5e5997849a8eae7a895a88699a1999b637f87303" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 17 15:21:19 2012 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 17 15:21:19 2012 -0800" }, "message": "proc: clean up and fix /proc/\u003cpid\u003e/mem handling\n\nJüri Aedla reported that the /proc/\u003cpid\u003e/mem handling really isn\u0027t very\nrobust, and it also doesn\u0027t match the permission checking of any of the\nother related files.\n\nThis changes it to do the permission checks at open time, and instead of\ntracking the process, it tracks the VM at the time of the open. That\nsimplifies the code a lot, but does mean that if you hold the file\ndescriptor open over an execve(), you\u0027ll continue to read from the _old_\nVM.\n\nThat is different from our previous behavior, but much simpler. If\nsomebody actually finds a load where this matters, we\u0027ll need to revert\nthis commit.\n\nI suspect that nobody will ever notice - because the process mapping\naddresses will also have changed as part of the execve. So you cannot\nactually usefully access the fd across a VM change simply because all\nthe offsets for IO would have changed too.\n\nReported-by: Jüri Aedla \u003casd@ut.ee\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "633b45454503489209b0d9a45f9e3cd1b852c614", "tree": "591363d3be6b773f872b979727d4ac1a9691ec82", "parents": [ "0a300be6d5be8f66cd96609334710c268d0bfdce" ], "author": { "name": "Eric Paris", "email": "eparis@redhat.com", "time": "Tue Jan 03 14:23:08 2012 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Jan 17 16:17:00 2012 -0500" }, "message": "audit: only allow tasks to set their loginuid if it is -1\n\nAt the moment we allow tasks to set their loginuid if they have\nCAP_AUDIT_CONTROL. In reality we want tasks to set the loginuid when they\nlog in and it be impossible to ever reset. We had to make it mutable even\nafter it was once set (with the CAP) because on update and admin might have\nto restart sshd. Now sshd would get his loginuid and the next user which\nlogged in using ssh would not be able to set his loginuid.\n\nSystemd has changed how userspace works and allowed us to make the kernel\nwork the way it should. With systemd users (even admins) are not supposed\nto restart services directly. The system will restart the service for\nthem. Thus since systemd is going to loginuid\u003d\u003d-1, sshd would get -1, and\nsshd would be allowed to set a new loginuid without special permissions.\n\nIf an admin in this system were to manually start an sshd he is inserting\nhimself into the system chain of trust and thus, logically, it\u0027s his\nloginuid that should be used! Since we have old systems I make this a\nKconfig option.\n\nSigned-off-by: Eric Paris \u003ceparis@redhat.com\u003e\n" }, { "commit": "0a300be6d5be8f66cd96609334710c268d0bfdce", "tree": "253d0d1e0aa28a6bdf883bb92e4b62fafe263563", "parents": [ "54d3218b31aee5bc9c859ae60fbde933d922448b" ], "author": { "name": "Eric Paris", "email": "eparis@redhat.com", "time": "Tue Jan 03 14:23:08 2012 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Jan 17 16:17:00 2012 -0500" }, "message": "audit: remove task argument to audit_set_loginuid\n\nThe function always deals with current. Don\u0027t expose an option\npretending one can use it for something. You can\u0027t.\n\nSigned-off-by: Eric Paris \u003ceparis@redhat.com\u003e\n" }, { "commit": "a2ef990ab5a6705a356d146dd773a3b359787497", "tree": "5eda6856d7e7662cc0742752f28e7626d4707f5f", "parents": [ "bccd17294a26b67a8a19aaa120e3eeaa7da49281" ], "author": { "name": "Xiaotian Feng", "email": "xtfeng@gmail.com", "time": "Thu Jan 12 17:17:08 2012 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 12 20:13:02 2012 -0800" }, "message": "proc: fix null pointer deref in proc_pid_permission()\n\nget_proc_task() can fail to search the task and return NULL,\nput_task_struct() will then bomb the kernel with following oops:\n\n BUG: unable to handle kernel NULL pointer dereference at 0000000000000010\n IP: [\u003cffffffff81217d34\u003e] proc_pid_permission+0x64/0xe0\n PGD 112075067 PUD 112814067 PMD 0\n Oops: 0002 [#1] PREEMPT SMP\n\nThis is a regression introduced by commit 0499680a (\"procfs: add hidepid\u003d\nand gid\u003d mount options\"). The kernel should return -ESRCH if\nget_proc_task() failed.\n\nSigned-off-by: Xiaotian Feng \u003cdannyfeng@tencent.com\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Vasiliy Kulikov \u003csegoon@openwall.com\u003e\nCc: Stephen Wilson \u003cwilsons@start.ca\u003e\nAcked-by: David Rientjes \u003crientjes@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "0499680a42141d86417a8fbaa8c8db806bea1201", "tree": "eb2aeb559bf5418476319aa81fa4f6ed3659bbc0", "parents": [ "97412950b10e64f347aec4a9b759395c2465adf6" ], "author": { "name": "Vasiliy Kulikov", "email": "segooon@gmail.com", "time": "Tue Jan 10 15:11:31 2012 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 10 16:30:54 2012 -0800" }, "message": "procfs: add hidepid\u003d and gid\u003d mount options\n\nAdd support for mount options to restrict access to /proc/PID/\ndirectories. The default backward-compatible \"relaxed\" behaviour is left\nuntouched.\n\nThe first mount option is called \"hidepid\" and its value defines how much\ninfo about processes we want to be available for non-owners:\n\nhidepid\u003d0 (default) means the old behavior - anybody may read all\nworld-readable /proc/PID/* files.\n\nhidepid\u003d1 means users may not access any /proc/\u003cpid\u003e/ directories, but\ntheir own. Sensitive files like cmdline, sched*, status are now protected\nagainst other users. As permission checking done in proc_pid_permission()\nand files\u0027 permissions are left untouched, programs expecting specific\nfiles\u0027 modes are not confused.\n\nhidepid\u003d2 means hidepid\u003d1 plus all /proc/PID/ will be invisible to other\nusers. It doesn\u0027t mean that it hides whether a process exists (it can be\nlearned by other means, e.g. by kill -0 $PID), but it hides process\u0027 euid\nand egid. It compicates intruder\u0027s task of gathering info about running\nprocesses, whether some daemon runs with elevated privileges, whether\nanother user runs some sensitive program, whether other users run any\nprogram at all, etc.\n\ngid\u003dXXX defines a group that will be able to gather all processes\u0027 info\n(as in hidepid\u003d0 mode). This group should be used instead of putting\nnonroot user in sudoers file or something. However, untrusted users (like\ndaemons, etc.) which are not supposed to monitor the tasks in the whole\nsystem should not be added to the group.\n\nhidepid\u003d1 or higher is designed to restrict access to procfs files, which\nmight reveal some sensitive private information like precise keystrokes\ntimings:\n\nhttp://www.openwall.com/lists/oss-security/2011/11/05/3\n\nhidepid\u003d1/2 doesn\u0027t break monitoring userspace tools. ps, top, pgrep, and\nconky gracefully handle EPERM/ENOENT and behave as if the current user is\nthe only user running processes. pstree shows the process subtree which\ncontains \"pstree\" process.\n\nNote: the patch doesn\u0027t deal with setuid/setgid issues of keeping\npreopened descriptors of procfs files (like\nhttps://lkml.org/lkml/2011/2/7/368). We rely on that the leaked\ninformation like the scheduling counters of setuid apps doesn\u0027t threaten\nanybody\u0027s privacy - only the user started the setuid program may read the\ncounters.\n\nSigned-off-by: Vasiliy Kulikov \u003csegoon@openwall.com\u003e\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Randy Dunlap \u003crdunlap@xenotime.net\u003e\nCc: \"H. Peter Anvin\" \u003chpa@zytor.com\u003e\nCc: Greg KH \u003cgreg@kroah.com\u003e\nCc: Theodore Tso \u003ctytso@MIT.EDU\u003e\nCc: Alan Cox \u003calan@lxorguk.ukuu.org.uk\u003e\nCc: James Morris \u003cjmorris@namei.org\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "640708a2cff7f81e246243b0073c66e6ece7e53e", "tree": "8cc00ae2b374bf6750ad9ca20da3566e28cfc9ff", "parents": [ "7773fbc54182a90cd248656619c7d33859e5f91d" ], "author": { "name": "Pavel Emelyanov", "email": "xemul@parallels.com", "time": "Tue Jan 10 15:11:23 2012 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 10 16:30:54 2012 -0800" }, "message": "procfs: introduce the /proc/\u003cpid\u003e/map_files/ directory\n\nThis one behaves similarly to the /proc/\u003cpid\u003e/fd/ one - it contains\nsymlinks one for each mapping with file, the name of a symlink is\n\"vma-\u003evm_start-vma-\u003evm_end\", the target is the file. Opening a symlink\nresults in a file that point exactly to the same inode as them vma\u0027s one.\n\nFor example the ls -l of some arbitrary /proc/\u003cpid\u003e/map_files/\n\n | lr-x------ 1 root root 64 Aug 26 06:40 7f8f80403000-7f8f80404000 -\u003e /lib64/libc-2.5.so\n | lr-x------ 1 root root 64 Aug 26 06:40 7f8f8061e000-7f8f80620000 -\u003e /lib64/libselinux.so.1\n | lr-x------ 1 root root 64 Aug 26 06:40 7f8f80826000-7f8f80827000 -\u003e /lib64/libacl.so.1.1.0\n | lr-x------ 1 root root 64 Aug 26 06:40 7f8f80a2f000-7f8f80a30000 -\u003e /lib64/librt-2.5.so\n | lr-x------ 1 root root 64 Aug 26 06:40 7f8f80a30000-7f8f80a4c000 -\u003e /lib64/ld-2.5.so\n\nThis *helps* checkpointing process in three ways:\n\n1. When dumping a task mappings we do know exact file that is mapped\n by particular region. We do this by opening\n /proc/$pid/map_files/$address symlink the way we do with file\n descriptors.\n\n2. This also helps in determining which anonymous shared mappings are\n shared with each other by comparing the inodes of them.\n\n3. When restoring a set of processes in case two of them has a mapping\n shared, we map the memory by the 1st one and then open its\n /proc/$pid/map_files/$address file and map it by the 2nd task.\n\nUsing /proc/$pid/maps for this is quite inconvenient since it brings\nrepeatable re-reading and reparsing for this text file which slows down\nrestore procedure significantly. Also as being pointed in (3) it is a way\neasier to use top level shared mapping in children as\n/proc/$pid/map_files/$address when needed.\n\n[akpm@linux-foundation.org: coding-style fixes]\n[gorcunov@openvz.org: make map_files depend on CHECKPOINT_RESTORE]\nSigned-off-by: Pavel Emelyanov \u003cxemul@parallels.com\u003e\nSigned-off-by: Cyrill Gorcunov \u003cgorcunov@openvz.org\u003e\nReviewed-by: Vasiliy Kulikov \u003csegoon@openwall.com\u003e\nReviewed-by: \"Kirill A. Shutemov\" \u003ckirill@shutemov.name\u003e\nCc: Tejun Heo \u003ctj@kernel.org\u003e\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: Al Viro \u003cviro@ZenIV.linux.org.uk\u003e\nCc: Pavel Machek \u003cpavel@ucw.cz\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7773fbc54182a90cd248656619c7d33859e5f91d", "tree": "1fe1cc91e194164c19675a588dad0efb3a8c8007", "parents": [ "5e6292c0f28f03dfdb8ea3d685f0b838a23bfba4" ], "author": { "name": "Cyrill Gorcunov", "email": "gorcunov@openvz.org", "time": "Tue Jan 10 15:11:20 2012 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 10 16:30:54 2012 -0800" }, "message": "procfs: make proc_get_link to use dentry instead of inode\n\nPrepare the ground for the next \"map_files\" patch which needs a name of a\nlink file to analyse.\n\nSigned-off-by: Cyrill Gorcunov \u003cgorcunov@openvz.org\u003e\nCc: Pavel Emelyanov \u003cxemul@parallels.com\u003e\nCc: Tejun Heo \u003ctj@kernel.org\u003e\nCc: Vasiliy Kulikov \u003csegoon@openwall.com\u003e\nCc: \"Kirill A. Shutemov\" \u003ckirill@shutemov.name\u003e\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: Al Viro \u003cviro@ZenIV.linux.org.uk\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "43d2b113241d6797b890318767e0af78e313414b", "tree": "6f25647f2660f8fca63cc8355b70ad643993dab8", "parents": [ "6bd4837de96e7d9f9bf33e59117c24fc230862ac" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Tue Jan 10 15:08:09 2012 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 10 16:30:44 2012 -0800" }, "message": "tracepoint: add tracepoints for debugging oom_score_adj\n\noom_score_adj is used for guarding processes from OOM-Killer. One of\nproblem is that it\u0027s inherited at fork(). When a daemon set oom_score_adj\nand make children, it\u0027s hard to know where the value is set.\n\nThis patch adds some tracepoints useful for debugging. This patch adds\n3 trace points.\n - creating new task\n - renaming a task (exec)\n - set oom_score_adj\n\nTo debug, users need to enable some trace pointer. Maybe filtering is useful as\n\n# EVENT\u003d/sys/kernel/debug/tracing/events/task/\n# echo \"oom_score_adj !\u003d 0\" \u003e $EVENT/task_newtask/filter\n# echo \"oom_score_adj !\u003d 0\" \u003e $EVENT/task_rename/filter\n# echo 1 \u003e $EVENT/enable\n# EVENT\u003d/sys/kernel/debug/tracing/events/oom/\n# echo 1 \u003e $EVENT/enable\n\noutput will be like this.\n# grep oom /sys/kernel/debug/tracing/trace\nbash-7699 [007] d..3 5140.744510: oom_score_adj_update: pid\u003d7699 comm\u003dbash oom_score_adj\u003d-1000\nbash-7699 [007] ...1 5151.818022: task_newtask: pid\u003d7729 comm\u003dbash clone_flags\u003d1200011 oom_score_adj\u003d-1000\nls-7729 [003] ...2 5151.818504: task_rename: pid\u003d7729 oldcomm\u003dbash newcomm\u003dls oom_score_adj\u003d-1000\nbash-7699 [002] ...1 5175.701468: task_newtask: pid\u003d7730 comm\u003dbash clone_flags\u003d1200011 oom_score_adj\u003d-1000\ngrep-7730 [007] ...2 5175.701993: task_rename: pid\u003d7730 oldcomm\u003dbash newcomm\u003dgrep oom_score_adj\u003d-1000\n\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nAcked-by: David Rientjes \u003crientjes@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ece2ccb668046610189d88d6aaf05aeb09c988a1", "tree": "a0349945f7537de2aca420b47ced23b6294f8b65", "parents": [ "d10577a8d86a0c735488d66d32289a6d66bcfa20", "a218d0fdc5f9004164ff151d274487f6799907d0", "ff01bb4832651c6d25ac509a06a10fcbd75c461c" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Jan 06 23:15:54 2012 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Jan 06 23:15:54 2012 -0500" }, "message": "Merge branches \u0027vfsmount-guts\u0027, \u0027umode_t\u0027 and \u0027partitions\u0027 into Z\n" }, { "commit": "0226f4923f6c9b40cfa1c1c1b19a6ac6b3924ead", "tree": "cb0f26e6329e2222a9f3b8f85887f63980a01d37", "parents": [ "3a2393d71d77b034669d495b49c212a87e04abdc" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Dec 06 12:21:54 2011 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Jan 03 22:57:13 2012 -0500" }, "message": "vfs: take /proc/*/mounts and friends to fs/proc_namespace.c\n\nrationale: that stuff is far tighter bound to fs/namespace.c than to\nthe guts of procfs proper.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "d161a13f974c72fd7ff0069d39a3ae57cb5694ff", "tree": "0c6d6237b3eafbe362798d7727a02f509fd72ca9", "parents": [ "587a1f1659e8b330b8738ef4901832a2b63f0bed" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sun Jul 24 03:36:29 2011 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Jan 03 22:54:56 2012 -0500" }, "message": "switch procfs to umode_t use\n\nboth proc_dir_entry -\u003emode and populating functions\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "5e442a493fc59fa536c76db1fff5b49ca36a88c5", "tree": "47fb93c6430ac7b598bf3bdd03d1399dd1467fad", "parents": [ "19e0bafc36abd84a5b4d7c7745b78a6f4626e944" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Nov 09 18:16:00 2011 -0500" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Nov 09 18:16:00 2011 -0500" }, "message": "Revert \"proc: fix races against execve() of /proc/PID/fd**\"\n\nThis reverts commit aa6afca5bcaba8101f3ea09d5c3e4100b2b9f0e5.\n\nIt escalates of some of the google-chrome SELinux problems with ptrace\n(\"Check failed: pid_ \u003e 0. Did not find zygote process\"), and Andrew\nsays that it is also causing mystery lockdep reports.\n\nReported-by: Alex Villacís Lasso \u003ca_villacis@palosanto.com\u003e\nRequested-by: James Morris \u003cjmorris@namei.org\u003e\nRequested-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "092f4c56c1927e4b61a41ee8055005f1cb437009", "tree": "616ceb54b7671ccc13922ae9e002b8b972f6e09e", "parents": [ "80c2861672bbf000f6af838656959ee937e4ee4d", "c1e2ee2dc436574880758b3836fc96935b774c32" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Nov 02 16:07:27 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Nov 02 16:07:27 2011 -0700" }, "message": "Merge branch \u0027akpm\u0027 (Andrew\u0027s incoming - part two)\n\nSays Andrew:\n\n \"60 patches. That\u0027s good enough for -rc1 I guess. I have quite a lot\n of detritus to be rechecked, work through maintainers, etc.\n\n - most of the remains of MM\n - rtc\n - various misc\n - cgroups\n - memcg\n - cpusets\n - procfs\n - ipc\n - rapidio\n - sysctl\n - pps\n - w1\n - drivers/misc\n - aio\"\n\n* akpm: (60 commits)\n memcg: replace ss-\u003eid_lock with a rwlock\n aio: allocate kiocbs in batches\n drivers/misc/vmw_balloon.c: fix typo in code comment\n drivers/misc/vmw_balloon.c: determine page allocation flag can_sleep outside loop\n w1: disable irqs in critical section\n drivers/w1/w1_int.c: multiple masters used same init_name\n drivers/power/ds2780_battery.c: fix deadlock upon insertion and removal\n drivers/power/ds2780_battery.c: add a nolock function to w1 interface\n drivers/power/ds2780_battery.c: create central point for calling w1 interface\n w1: ds2760 and ds2780, use ida for id and ida_simple_get() to get it\n pps gpio client: add missing dependency\n pps: new client driver using GPIO\n pps: default echo function\n include/linux/dma-mapping.h: add dma_zalloc_coherent()\n sysctl: make CONFIG_SYSCTL_SYSCALL default to n\n sysctl: add support for poll()\n RapidIO: documentation update\n drivers/net/rionet.c: fix ethernet address macros for LE platforms\n RapidIO: fix potential null deref in rio_setup_device()\n RapidIO: add mport driver for Tsi721 bridge\n ...\n" }, { "commit": "aa6afca5bcaba8101f3ea09d5c3e4100b2b9f0e5", "tree": "d8a6fec9d15cbaf37513a18666f5611aa7cb7a83", "parents": [ "887df07891de0435c25cffb92268fea2c621f99c" ], "author": { "name": "Vasiliy Kulikov", "email": "segoon@openwall.com", "time": "Wed Nov 02 13:38:44 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Nov 02 16:07:00 2011 -0700" }, "message": "proc: fix races against execve() of /proc/PID/fd**\n\nfd* files are restricted to the task\u0027s owner, and other users may not get\ndirect access to them. But one may open any of these files and run any\nsetuid program, keeping opened file descriptors. As there are permission\nchecks on open(), but not on readdir() and read(), operations on the kept\nfile descriptors will not be checked. It makes it possible to violate\nprocfs permission model.\n\nReading fdinfo/* may disclosure current fds\u0027 position and flags, reading\ndirectory contents of fdinfo/ and fd/ may disclosure the number of opened\nfiles by the target task. This information is not sensible per se, but it\ncan reveal some private information (like length of a password stored in a\nfile) under certain conditions.\n\nUsed existing (un)lock_trace functions to check for ptrace_may_access(),\nbut instead of using EPERM return code from it use EACCES to be consistent\nwith existing proc_pid_follow_link()/proc_pid_readlink() return code. If\nthey differ, attacker can guess what fds exist by analyzing stat() return\ncode. Patched handlers: stat() for fd/*, stat() and read() for fdindo/*,\nreaddir() and lookup() for fd/ and fdinfo/.\n\nSigned-off-by: Vasiliy Kulikov \u003csegoon@openwall.com\u003e\nCc: Cyrill Gorcunov \u003cgorcunov@gmail.com\u003e\nCc: \u003cstable@kernel.org\u003e\nCc: \u003cstable@vger.kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "bfe8684869601dacfcb2cd69ef8cfd9045f62170", "tree": "4e213aaa766b26f43f0f9ec7998a7745239d9377", "parents": [ "6d6b77f163c7eabedbba00ed2abb7d4a570bff76" ], "author": { "name": "Miklos Szeredi", "email": "mszeredi@suse.cz", "time": "Fri Oct 28 14:13:29 2011 +0200" }, "committer": { "name": "Christoph Hellwig", "email": "hch@serles.lst.de", "time": "Wed Nov 02 12:53:43 2011 +0100" }, "message": "filesystems: add set_nlink()\n\nReplace remaining direct i_nlink updates with a new set_nlink()\nupdater function.\n\nSigned-off-by: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nTested-by: Toshiyuki Okajima \u003ctoshi.okajima@jp.fujitsu.com\u003e\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\n" }, { "commit": "c9f01245b6a7d77d17deaa71af10f6aca14fa24e", "tree": "13ffde591a5bcefba39cb6393f09b27f1ebc1a30", "parents": [ "7b0d44fa49b1dcfdcf4897f12ddd12ddeab1a9d7" ], "author": { "name": "David Rientjes", "email": "rientjes@google.com", "time": "Mon Oct 31 17:07:15 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Oct 31 17:30:45 2011 -0700" }, "message": "oom: remove oom_disable_count\n\nThis removes mm-\u003eoom_disable_count entirely since it\u0027s unnecessary and\ncurrently buggy. The counter was intended to be per-process but it\u0027s\ncurrently decremented in the exit path for each thread that exits, causing\nit to underflow.\n\nThe count was originally intended to prevent oom killing threads that\nshare memory with threads that cannot be killed since it doesn\u0027t lead to\nfuture memory freeing. The counter could be fixed to represent all\nthreads sharing the same mm, but it\u0027s better to remove the count since:\n\n - it is possible that the OOM_DISABLE thread sharing memory with the\n victim is waiting on that thread to exit and will actually cause\n future memory freeing, and\n\n - there is no guarantee that a thread is disabled from oom killing just\n because another thread sharing its mm is oom disabled.\n\nSigned-off-by: David Rientjes \u003crientjes@google.com\u003e\nReported-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nReviewed-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Ying Han \u003cyinghan@google.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "1117f72ea0217ba0cc19f05adbbd8b9a397f5ab7", "tree": "26acc637b57fb4ac6b965fd8fb4b7249aaec8755", "parents": [ "c21427043dec93d40e3a1af970831d1f5f15ce5d" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Aug 06 11:51:33 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Aug 06 11:51:33 2011 -0700" }, "message": "vfs: show O_CLOEXE bit properly in /proc/\u003cpid\u003e/fdinfo/\u003cfd\u003e files\n\nThe CLOEXE bit is magical, and for performance (and semantic) reasons we\ndon\u0027t actually maintain it in the file descriptor itself, but in a\nseparate bit array. Which means that when we show f_flags, the CLOEXE\nstatus is shown incorrectly: we show the status not as it is now, but as\nit was when the file was opened.\n\nFix that by looking up the bit properly in the \u0027fdt-\u003eclose_on_exec\u0027 bit\narray.\n\nUli needs this in order to re-implement the pfiles program:\n\n \"For normal file descriptors (not sockets) this was the last piece of\n information which wasn\u0027t available. This is all part of my \u0027give\n Solaris users no reason to not switch\u0027 effort. I intend to offer the\n code to the util-linux-ng maintainers.\"\n\nRequested-by: Ulrich Drepper \u003cdrepper@akkadia.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c21427043dec93d40e3a1af970831d1f5f15ce5d", "tree": "ad5a6fc418ffb6459f6e75bfa47ecd12c5606267", "parents": [ "1eb19a12bd2214cdcad5273d472b062a4ba97fa1" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Aug 06 11:43:08 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Aug 06 11:43:08 2011 -0700" }, "message": "oom_ajd: don\u0027t use WARN_ONCE, just use printk_once\n\nWARN_ONCE() is very annoying, in that it shows the stack trace that we\ndon\u0027t care about at all, and also triggers various user-level \"kernel\noopsed\" logic that we really don\u0027t care about. And it\u0027s not like the\nuser can do anything about the applications (sshd) in question, it\u0027s a\ndistro issue.\n\nRequested-by: Andi Kleen \u003candi@firstfloor.org\u003e (and many others)\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "293eb1e7772b25a93647c798c7b89bf26c2da2e0", "tree": "debd49012773091732ee1e1b2388462b759525a7", "parents": [ "d2857e79a2ba7c155eaa1a7d3581c8d26b31e54e" ], "author": { "name": "Vasiliy Kulikov", "email": "segoon@openwall.com", "time": "Tue Jul 26 16:08:38 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jul 26 16:49:43 2011 -0700" }, "message": "proc: fix a race in do_io_accounting()\n\nIf an inode\u0027s mode permits opening /proc/PID/io and the resulting file\ndescriptor is kept across execve() of a setuid or similar binary, the\nptrace_may_access() check tries to prevent using this fd against the\ntask with escalated privileges.\n\nUnfortunately, there is a race in the check against execve(). If\nexecve() is processed after the ptrace check, but before the actual io\ninformation gathering, io statistics will be gathered from the\nprivileged process. At least in theory this might lead to gathering\nsensible information (like ssh/ftp password length) that wouldn\u0027t be\navailable otherwise.\n\nHolding task-\u003esignal-\u003ecred_guard_mutex while gathering the io\ninformation should protect against the race.\n\nThe order of locking is similar to the one inside of ptrace_attach():\nfirst goes cred_guard_mutex, then lock_task_sighand().\n\nSigned-off-by: Vasiliy Kulikov \u003csegoon@openwall.com\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "be8f684d73d8d916847e996bf69cef14352872c6", "tree": "7a7be6cd2030c6cdeb57f6ed51fe04dd5a137726", "parents": [ "11239836c04b50ba8453ec58ca7a7bd716ef02c1" ], "author": { "name": "David Rientjes", "email": "rientjes@google.com", "time": "Mon Jul 25 17:12:18 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Jul 25 20:57:09 2011 -0700" }, "message": "oom: make deprecated use of oom_adj more verbose\n\n/proc/pid/oom_adj is deprecated and scheduled for removal in August 2012\naccording to Documentation/feature-removal-schedule.txt.\n\nThis patch makes the warning more verbose by making it appear as a more\nserious problem (the presence of a stack trace and being multiline should\nattract more attention) so that applications still using the old interface\ncan get fixed.\n\nVery popular users of the old interface have been converted since the oom\nkiller rewrite has been introduced. udevd switched to the\n/proc/pid/oom_score_adj interface for v162, kde switched in 4.6.1, and\nopensshd switched in 5.7p1.\n\nAt the start of 2012, this should be changed into a WARN() to emit all\nsuch incidents and then finally remove the tunable in August 2012 as\nscheduled.\n\nSigned-off-by: David Rientjes \u003crientjes@google.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "bbd9d6f7fbb0305c9a592bf05a32e87eb364a4ff", "tree": "12b2bb4202b05f6ae6a43c6ce830a0472043dbe5", "parents": [ "8e204874db000928e37199c2db82b7eb8966cc3c", "5a9a43646cf709312d71eca71cef90ad802f28f9" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jul 22 19:02:39 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jul 22 19:02:39 2011 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (107 commits)\n vfs: use ERR_CAST for err-ptr tossing in lookup_instantiate_filp\n isofs: Remove global fs lock\n jffs2: fix IN_DELETE_SELF on overwriting rename() killing a directory\n fix IN_DELETE_SELF on overwriting rename() on ramfs et.al.\n mm/truncate.c: fix build for CONFIG_BLOCK not enabled\n fs:update the NOTE of the file_operations structure\n Remove dead code in dget_parent()\n AFS: Fix silly characters in a comment\n switch d_add_ci() to d_splice_alias() in \"found negative\" case as well\n simplify gfs2_lookup()\n jfs_lookup(): don\u0027t bother with . or ..\n get rid of useless dget_parent() in btrfs rename() and link()\n get rid of useless dget_parent() in fs/btrfs/ioctl.c\n fs: push i_mutex and filemap_write_and_wait down into -\u003efsync() handlers\n drivers: fix up various -\u003ellseek() implementations\n fs: handle SEEK_HOLE/SEEK_DATA properly in all fs\u0027s that define their own llseek\n Ext4: handle SEEK_HOLE/SEEK_DATA generically\n Btrfs: implement our own -\u003ellseek\n fs: add SEEK_HOLE and SEEK_DATA flags\n reiserfs: make reiserfs default to barrier\u003dflush\n ...\n\nFix up trivial conflicts in fs/xfs/linux-2.6/xfs_super.c due to the new\nshrinker callout for the inode cache, that clashed with the xfs code to\nstart the periodic workers later.\n" }, { "commit": "8209f53d79444747782a28520187abaf689761f2", "tree": "726270ea29e037f026d77a99787b9d844531ac42", "parents": [ "22a3b9771117d566def0150ea787fcc95f16e724", "eac1b5e57d7abc836e78fd3fbcf77dbeed01edc9" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jul 22 15:06:50 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jul 22 15:06:50 2011 -0700" }, "message": "Merge branch \u0027ptrace\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/oleg/misc\n\n* \u0027ptrace\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/oleg/misc: (39 commits)\n ptrace: do_wait(traced_leader_killed_by_mt_exec) can block forever\n ptrace: fix ptrace_signal() \u0026\u0026 STOP_DEQUEUED interaction\n connector: add an event for monitoring process tracers\n ptrace: dont send SIGSTOP on auto-attach if PT_SEIZED\n ptrace: mv send-SIGSTOP from do_fork() to ptrace_init_task()\n ptrace_init_task: initialize child-\u003ejobctl explicitly\n has_stopped_jobs: s/task_is_stopped/SIGNAL_STOP_STOPPED/\n ptrace: make former thread ID available via PTRACE_GETEVENTMSG after PTRACE_EVENT_EXEC stop\n ptrace: wait_consider_task: s/same_thread_group/ptrace_reparented/\n ptrace: kill real_parent_is_ptracer() in in favor of ptrace_reparented()\n ptrace: ptrace_reparented() should check same_thread_group()\n redefine thread_group_leader() as exit_signal \u003e\u003d 0\n do not change dead_task-\u003eexit_signal\n kill task_detached()\n reparent_leader: check EXIT_DEAD instead of task_detached()\n make do_notify_parent() __must_check, update the callers\n __ptrace_detach: avoid task_detached(), check do_notify_parent()\n kill tracehook_notify_death()\n make do_notify_parent() return bool\n ptrace: s/tracehook_tracer_task()/ptrace_parent()/\n ...\n" }, { "commit": "f15146380d28b746df3c8b81b392812eb982382a", "tree": "bf43b38b60c21bd01b007c9636062783d406eb29", "parents": [ "72c5052ddc3956d847f21c2b8d55c93664a51b2c" ], "author": { "name": "Kay Sievers", "email": "kay.sievers@vrfy.org", "time": "Tue Jul 12 20:48:39 2011 +0200" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Jul 20 20:47:50 2011 -0400" }, "message": "fs: seq_file - add event counter to simplify poll() support\n\nMoving the event counter into the dynamically allocated \u0027struc seq_file\u0027\nallows poll() support without the need to allocate its own tracking\nstructure.\n\nAll current users are switched over to use the new counter.\n\nRequested-by: Andrew Morton akpm@linux-foundation.org\nAcked-by: NeilBrown \u003cneilb@suse.de\u003e\nTested-by: Lucas De Marchi lucas.demarchi@profusion.mobi\nSigned-off-by: Kay Sievers \u003ckay.sievers@vrfy.org\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "10556cb21a0d0b24d95f00ea6df16f599a3345b2", "tree": "3d7d8dfba807805a55c154f1850717bf3b49f343", "parents": [ "2830ba7f34ebb27c4e5b8b6ef408cd6d74860890" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Jun 20 19:28:19 2011 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Jul 20 01:43:24 2011 -0400" }, "message": "-\u003epermission() sanitizing: don\u0027t pass flags to -\u003epermission()\n\nnot used by the instances anymore.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "2830ba7f34ebb27c4e5b8b6ef408cd6d74860890", "tree": "bbcebc14bffd000f1dfcbf37e64f56d2f49581ac", "parents": [ "7e40145eb111a5192e6d819f764db9d6828d1abb" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Jun 20 19:16:29 2011 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Jul 20 01:43:22 2011 -0400" }, "message": "-\u003epermission() sanitizing: don\u0027t pass flags to generic_permission()\n\nredundant; all callers get it duplicated in mask \u0026 MAY_NOT_BLOCK and none of\nthem removes that bit.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "178ea73521d64ba41d7aa5488fb9f549c6d4507d", "tree": "7fb6bfb6483577752e307a5bb2e3905658d44294", "parents": [ "07b8ce1ee87d291ff564c02cf878fae973317a52" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Jun 20 11:31:30 2011 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Jul 20 01:43:16 2011 -0400" }, "message": "kill check_acl callback of generic_permission()\n\nits value depends only on inode and does not change; we might as\nwell store it in -\u003ei_op-\u003echeck_acl and be done with that.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "1d1221f375c94ef961ba8574ac4f85c8870ddd51", "tree": "1e05f1c33bef03a88745c55ac9891b8423ae1795", "parents": [ "b0af8dfdd67699e25083478c63eedef2e72ebd85" ], "author": { "name": "Vasiliy Kulikov", "email": "segoon@openwall.com", "time": "Fri Jun 24 16:08:38 2011 +0400" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jun 28 09:39:11 2011 -0700" }, "message": "proc: restrict access to /proc/PID/io\n\n/proc/PID/io may be used for gathering private information. E.g. for\nopenssh and vsftpd daemons wchars/rchars may be used to learn the\nprecise password length. Restrict it to processes being able to ptrace\nthe target process.\n\nptrace_may_access() is needed to prevent keeping open file descriptor of\n\"io\" file, executing setuid binary and gathering io information of the\nsetuid\u0027ed process.\n\nSigned-off-by: Vasiliy Kulikov \u003csegoon@openwall.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "06d984737bac0545fe20bb5447ee488b95adb531", "tree": "b8d89d21a53c28a025dd42598bc3406e25db5ba8", "parents": [ "4b9d33e6d83cc05a8005a8f9a8b9677fa0f53626" ], "author": { "name": "Tejun Heo", "email": "tj@kernel.org", "time": "Fri Jun 17 16:50:40 2011 +0200" }, "committer": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Wed Jun 22 19:26:29 2011 +0200" }, "message": "ptrace: s/tracehook_tracer_task()/ptrace_parent()/\n\ntracehook.h is on the way out. Rename tracehook_tracer_task() to\nptrace_parent() and move it from tracehook.h to ptrace.h.\n\nSigned-off-by: Tejun Heo \u003ctj@kernel.org\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nCc: John Johansen \u003cjohn.johansen@canonical.com\u003e\nCc: Stephen Smalley \u003csds@tycho.nsa.gov\u003e\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\n" }, { "commit": "cf1279111686d9742cbc4145bc9d526c83f59fea", "tree": "3247223a8bef912896418bd07475cec2658fc212", "parents": [ "730e908f3539066d4aa01f4720ebfc750ce4d045" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sat Jun 18 20:35:23 2011 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Jun 20 10:44:50 2011 -0400" }, "message": "proc_fd_permission() is doesn\u0027t need to bail out in RCU mode\n\nnothing blocking except generic_permission()\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "57ed609d4b64139b4d2cf5f3b4880a573a7905d2", "tree": "d824e1ebd33b28c4ccc53e9074064db479b17dc7", "parents": [ "a74d70b63f1a0230831bcca3145d85ae016f9d4c", "f133ecca9cbb31b5e6e9bda27cbe3034fbf656df" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun May 29 11:29:28 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun May 29 11:29:28 2011 -0700" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:\n arch/tile: more /proc and /sys file support\n" }, { "commit": "f133ecca9cbb31b5e6e9bda27cbe3034fbf656df", "tree": "1887377b71ee9fc73d4e1226d1d9776ae5a5d7ad", "parents": [ "7a0287df3e83a0012dfc496d4a8af9c1c5b126ef" ], "author": { "name": "Chris Metcalf", "email": "cmetcalf@tilera.com", "time": "Thu May 26 12:40:09 2011 -0400" }, "committer": { "name": "Chris Metcalf", "email": "cmetcalf@tilera.com", "time": "Fri May 27 10:39:05 2011 -0400" }, "message": "arch/tile: more /proc and /sys file support\n\nThis change introduces a few of the less controversial /proc and\n/proc/sys interfaces for tile, along with sysfs attributes for\nvarious things that were originally proposed as /proc/tile files.\nIt also adjusts the \"hardwall\" proc API.\n\nArnd Bergmann reviewed the initial arch/tile submission, which\nincluded a complete set of all the /proc/tile and /proc/sys/tile\nknobs that we had added in a somewhat ad hoc way during initial\ndevelopment, and provided feedback on where most of them should go.\n\nOne knob turned out to be similar enough to the existing\n/proc/sys/debug/exception-trace that it was re-implemented to use\nthat model instead.\n\nAnother knob was /proc/tile/grid, which reported the \"grid\" dimensions\nof a tile chip (e.g. 8x8 processors \u003d 64-core chip). Arnd suggested\nlooking at sysfs for that, so this change moves that information\nto a pair of sysfs attributes (chip_width and chip_height) in the\n/sys/devices/system/cpu directory. We also put the \"chip_serial\"\nand \"chip_revision\" information from our old /proc/tile/board file\nas attributes in /sys/devices/system/cpu.\n\nOther information collected via hypervisor APIs is now placed in\n/sys/hypervisor. We create a /sys/hypervisor/type file (holding the\nconstant string \"tilera\") to be parallel with the Xen use of\n/sys/hypervisor/type holding \"xen\". We create three top-level files,\n\"version\" (the hypervisor\u0027s own version), \"config_version\" (the\nversion of the configuration file), and \"hvconfig\" (the contents of\nthe configuration file). The remaining information from our old\n/proc/tile/board and /proc/tile/switch files becomes an attribute\ngroup appearing under /sys/hypervisor/board/.\n\nFinally, after some feedback from Arnd Bergmann for the previous\nversion of this patch, the /proc/tile/hardwall file is split up into\ntwo conceptual parts. First, a directory /proc/tile/hardwall/ which\ncontains one file per active hardwall, each file named after the\nhardwall\u0027s ID and holding a cpulist that says which cpus are enclosed by\nthe hardwall. Second, a /proc/PID file \"hardwall\" that is either\nempty (for non-hardwall-using processes) or contains the hardwall ID.\n\nFinally, this change pushes the /proc/sys/tile/unaligned_fixup/\ndirectory, with knobs controlling the kernel code for handling the\nfixup of unaligned exceptions.\n\nReviewed-by: Arnd Bergmann \u003carnd@arndb.de\u003e\nSigned-off-by: Chris Metcalf \u003ccmetcalf@tilera.com\u003e\n" }, { "commit": "30cd8903913dac7b0918807cac46be3ecde5a5a7", "tree": "64022195d9a384c11b93a4b1299aa944b8293deb", "parents": [ "a4dbf0ec2aa3e8aca6e63f598095750c232d50f1" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Thu May 26 16:25:52 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 26 17:12:37 2011 -0700" }, "message": "proc: put check_mem_permission after __get_free_page in mem_write\n\nIt whould be better if put check_mem_permission after __get_free_page in\nmem_write, to be same as function mem_read.\n\nHugh Dickins explained the reason.\n\n check_mem_permission gets a reference to the mm. If we __get_free_page\n after check_mem_permission, imagine what happens if the system is out\n of memory, and the mm we\u0027re looking at is selected for killing by the\n OOM killer: while we wait in __get_free_page for more memory, no memory\n is freed from the selected mm because it cannot reach exit_mmap while\n we hold that reference.\n\nReported-by: Jovi Zhang \u003cbookjovi@gmail.com\u003e\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nAcked-by: Hugh Dickins \u003chughd@google.com\u003e\nReviewed-by: Stephen Wilson \u003cwilsons@start.ca\u003e\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "0a8cb8e34149251ad1f280fe099a4f971554639a", "tree": "9b99f0b9d7366d9049760fd06462b14b0e14a061", "parents": [ "57cc083ad9e1bfeeb4a0ee831e7bb008c8865bf0" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Thu May 26 16:25:50 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 26 17:12:36 2011 -0700" }, "message": "fs/proc: convert to kstrtoX()\n\nConvert fs/proc/ from strict_strto*() to kstrto*() functions.\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3864601387cf4196371e3c1897fdffa5228296f9", "tree": "1c517a970194f9e49ef98ef434c650771ffa31e1", "parents": [ "63ab25ebbc50f74550bd8d164a34724b498f6fb9" ], "author": { "name": "Jiri Slaby", "email": "jslaby@suse.cz", "time": "Thu May 26 16:25:46 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 26 17:12:36 2011 -0700" }, "message": "mm: extract exe_file handling from procfs\n\nSetup and cleanup of mm_struct-\u003eexe_file is currently done in fs/proc/.\nThis was because exe_file was needed only for /proc/\u003cpid\u003e/exe. Since we\nwill need the exe_file functionality also for core dumps (so core name can\ncontain full binary path), built this functionality always into the\nkernel.\n\nTo achieve that move that out of proc FS to the kernel/ where in fact it\nshould belong. By doing that we can make dup_mm_exe_file static. Also we\ncan drop linux/proc_fs.h inclusion in fs/exec.c and kernel/fork.c.\n\nSigned-off-by: Jiri Slaby \u003cjslaby@suse.cz\u003e\nCc: Alexander Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6b4e306aa3dc94a0545eb9279475b1ab6209a31f", "tree": "ca8c6dec0805076f0b5ba7c547e3cb2004e3aea2", "parents": [ "0ee5623f9a6e52df90a78bd21179f8ab370e102e" ], "author": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Sun Mar 07 16:41:34 2010 -0800" }, "committer": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Tue May 10 14:31:44 2011 -0700" }, "message": "ns: proc files for namespace naming policy.\n\nCreate files under /proc/\u003cpid\u003e/ns/ to allow controlling the\nnamespaces of a process.\n\nThis addresses three specific problems that can make namespaces hard to\nwork with.\n- Namespaces require a dedicated process to pin them in memory.\n- It is not possible to use a namespace unless you are the child\n of the original creator.\n- Namespaces don\u0027t have names that userspace can use to talk about\n them.\n\nThe namespace files under /proc/\u003cpid\u003e/ns/ can be opened and the\nfile descriptor can be used to talk about a specific namespace, and\nto keep the specified namespace alive.\n\nA namespace can be kept alive by either holding the file descriptor\nopen or bind mounting the file someplace else. aka:\nmount --bind /proc/self/ns/net /some/filesystem/path\nmount --bind /proc/self/fd/\u003cN\u003e /some/filesystem/path\n\nThis allows namespaces to be named with userspace policy.\n\nIt requires additional support to make use of these filedescriptors\nand that will be comming in the following patches.\n\nAcked-by: Daniel Lezcano \u003cdaniel.lezcano@free.fr\u003e\nSigned-off-by: Eric W. Biederman \u003cebiederm@xmission.com\u003e\n" }, { "commit": "d8bdc59f215e62098bc5b4256fd9928bf27053a1", "tree": "2f6e233afaf1b7f970e2f0ef0786dff4596dbd0a", "parents": [ "c78193e9c7bcbf25b8237ad0dec82f805c4ea69b" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 18 10:36:54 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 18 10:36:54 2011 -0700" }, "message": "proc: do proper range check on readdir offset\n\nRather than pass in some random truncated offset to the pid-related\nfunctions, check that the offset is in range up-front.\n\nThis is just cleanup, the previous commit fixed the real problem.\n\nCc: stable@kernel.org\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "25985edcedea6396277003854657b5f3cb31a628", "tree": "f026e810210a2ee7290caeb737c23cb6472b7c38", "parents": [ "6aba74f2791287ec407e0f92487a725a25908067" ], "author": { "name": "Lucas De Marchi", "email": "lucas.demarchi@profusion.mobi", "time": "Wed Mar 30 22:57:33 2011 -0300" }, "committer": { "name": "Lucas De Marchi", "email": "lucas.demarchi@profusion.mobi", "time": "Thu Mar 31 11:26:23 2011 -0300" }, "message": "Fix common misspellings\n\nFixes generated by \u0027codespell\u0027 and manually reviewed.\n\nSigned-off-by: Lucas De Marchi \u003clucas.demarchi@profusion.mobi\u003e\n" }, { "commit": "b81a618dcd3ea99de292dbe624f41ca68f464376", "tree": "c5fbe44f944da9d7dc0c224116be77094d379c8a", "parents": [ "2f284c846331fa44be1300a3c2c3e85800268a00", "a9712bc12c40c172e393f85a9b2ba8db4bf59509" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Mar 23 20:51:42 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Mar 23 20:51:42 2011 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:\n deal with races in /proc/*/{syscall,stack,personality}\n proc: enable writing to /proc/pid/mem\n proc: make check_mem_permission() return an mm_struct on success\n proc: hold cred_guard_mutex in check_mem_permission()\n proc: disable mem_write after exec\n mm: implement access_remote_vm\n mm: factor out main logic of access_process_vm\n mm: use mm_struct to resolve gate vma\u0027s in __get_user_pages\n mm: arch: rename in_gate_area_no_task to in_gate_area_no_mm\n mm: arch: make in_gate_area take an mm_struct instead of a task_struct\n mm: arch: make get_gate_vma take an mm_struct instead of a task_struct\n x86: mark associated mm when running a task in 32 bit compatibility mode\n x86: add context tag to mark mm when running a task in 32-bit compatibility mode\n auxv: require the target to be tracable (or yourself)\n close race in /proc/*/environ\n report errors in /proc/*/*map* sanely\n pagemap: close races with suid execve\n make sessionid permissions in /proc/*/task/* match those in /proc/*\n fix leaks in path_lookupat()\n\nFix up trivial conflicts in fs/proc/base.c\n" }, { "commit": "fc3d8767b2b6de955579852d7a150f1734265eaf", "tree": "282762d459af3ebdf0bf8661a9422d55fc74dbb1", "parents": [ "0db0c01b53a1a421513f91573241aabafb87802a" ], "author": { "name": "Jovi Zhang", "email": "bookjovi@gmail.com", "time": "Wed Mar 23 16:42:51 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Mar 23 19:46:36 2011 -0700" }, "message": "procfs: fix some wrong error code usage\n\n[root@wei 1]# cat /proc/1/mem\ncat: /proc/1/mem: No such process\n\nerror code -ESRCH is wrong in this situation. Return -EPERM instead.\n\nSigned-off-by: Jovi Zhang \u003cbookjovi@gmail.com\u003e\nReviewed-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "51e031496d50f87ff519a63cfd4fc2f415f03336", "tree": "75c177b8aeba82fffb80960eed1c77bb4188c362", "parents": [ "523fb486bfd94e3a3b16a42bcb21b1959cf14df8" ], "author": { "name": "Konstantin Khlebnikov", "email": "khlebnikov@openvz.org", "time": "Wed Mar 23 16:42:48 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Mar 23 19:46:36 2011 -0700" }, "message": "proc: hide kernel addresses via %pK in /proc/\u003cpid\u003e/stack\n\nThis file is readable for the task owner. Hide kernel addresses from\nunprivileged users, leave them function names and offsets.\n\nSigned-off-by: Konstantin Khlebnikov \u003ckhlebnikov@openvz.org\u003e\nAcked-by: Kees Cook \u003ckees.cook@canonical.com\u003e\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a9712bc12c40c172e393f85a9b2ba8db4bf59509", "tree": "c40217e028ae937da7ad94e249e2247191ffcc8f", "parents": [ "198214a7ee50375fa71a65e518341980cfd4b2f0" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Mar 23 15:52:50 2011 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Mar 23 17:01:18 2011 -0400" }, "message": "deal with races in /proc/*/{syscall,stack,personality}\n\nAll of those are rw-r--r-- and all are broken for suid - if you open\na file before the target does suid-root exec, you\u0027ll be still able\nto access it. For personality it\u0027s not a big deal, but for syscall\nand stack it\u0027s a real problem.\n\nFix: check that task is tracable for you at the time of read().\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "198214a7ee50375fa71a65e518341980cfd4b2f0", "tree": "cfd389ba211b8742c99dcbb866b3a6c0864f2164", "parents": [ "8b0db9db19858b08c46a84540acfd35f6e6487b8" ], "author": { "name": "Stephen Wilson", "email": "wilsons@start.ca", "time": "Sun Mar 13 15:49:24 2011 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Mar 23 16:36:59 2011 -0400" }, "message": "proc: enable writing to /proc/pid/mem\n\nWith recent changes there is no longer a security hazard with writing to\n/proc/pid/mem. Remove the #ifdef.\n\nSigned-off-by: Stephen Wilson \u003cwilsons@start.ca\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "8b0db9db19858b08c46a84540acfd35f6e6487b8", "tree": "f8cad66b43b21ac8cc58c6173b86aaa9ee3d4b5f", "parents": [ "18f661bcf898742212182d75f22f05b048cc04bb" ], "author": { "name": "Stephen Wilson", "email": "wilsons@start.ca", "time": "Sun Mar 13 15:49:23 2011 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Mar 23 16:36:59 2011 -0400" }, "message": "proc: make check_mem_permission() return an mm_struct on success\n\nThis change allows us to take advantage of access_remote_vm(), which in turn\neliminates a security issue with the mem_write() implementation.\n\nThe previous implementation of mem_write() was insecure since the target task\ncould exec a setuid-root binary between the permission check and the actual\nwrite. Holding a reference to the target mm_struct eliminates this\nvulnerability.\n\nSigned-off-by: Stephen Wilson \u003cwilsons@start.ca\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "18f661bcf898742212182d75f22f05b048cc04bb", "tree": "3a0a6edc6e4240bda06fe52d565fe4b1cb4d8b84", "parents": [ "26947f8c8f9598209001cdcd31bb2162a2e54691" ], "author": { "name": "Stephen Wilson", "email": "wilsons@start.ca", "time": "Sun Mar 13 15:49:22 2011 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Mar 23 16:36:58 2011 -0400" }, "message": "proc: hold cred_guard_mutex in check_mem_permission()\n\nAvoid a potential race when task exec\u0027s and we get a new -\u003emm but check against\nthe old credentials in ptrace_may_access().\n\nHolding of the mutex is implemented by factoring out the body of the code into a\nhelper function __check_mem_permission(). Performing this factorization now\nsimplifies upcoming changes and minimizes churn in the diff\u0027s.\n\nSigned-off-by: Stephen Wilson \u003cwilsons@start.ca\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "26947f8c8f9598209001cdcd31bb2162a2e54691", "tree": "bab014e7ad404ca3e36ae650f170f02df05705cd", "parents": [ "5ddd36b9c59887c6416e21daf984fbdd9b1818df" ], "author": { "name": "Stephen Wilson", "email": "wilsons@start.ca", "time": "Sun Mar 13 15:49:21 2011 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Mar 23 16:36:58 2011 -0400" }, "message": "proc: disable mem_write after exec\n\nThis change makes mem_write() observe the same constraints as mem_read(). This\nis particularly important for mem_write as an accidental leak of the fd across\nan exec could result in arbitrary modification of the target process\u0027 memory.\nIOW, /proc/pid/mem is implicitly close-on-exec.\n\nSigned-off-by: Stephen Wilson \u003cwilsons@start.ca\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "2fadaef41283aad7100fa73f01998cddaca25833", "tree": "110c35c301a504d03d73d1aea2904abc43ccce6f", "parents": [ "d6f64b89d7ff22ce05896ab4a93a653e8d0b123d" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Feb 15 22:52:11 2011 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Mar 23 16:36:52 2011 -0400" }, "message": "auxv: require the target to be tracable (or yourself)\n\nsame as for environ, except that we didn\u0027t do any checks to\nprevent access after suid execve\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "d6f64b89d7ff22ce05896ab4a93a653e8d0b123d", "tree": "21bc9a103dade9b22ced58455dde7cd00e01cd28", "parents": [ "ec6fd8a4355cda81cd9f06bebc048e83eb514ac7" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Feb 15 22:26:01 2011 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Mar 23 16:36:51 2011 -0400" }, "message": "close race in /proc/*/environ\n\nSwitch to mm_for_maps(). Maybe we ought to make it r--r--r--,\nsince we do checks on IO anyway...\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "ec6fd8a4355cda81cd9f06bebc048e83eb514ac7", "tree": "828c3f2e1b474cc0ec9768d5dc19cfa2c086898f", "parents": [ "ca6b0bf0e086513b9ee5efc0aa5770ecb57778af" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Feb 15 22:22:54 2011 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Mar 23 16:36:50 2011 -0400" }, "message": "report errors in /proc/*/*map* sanely\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "ca6b0bf0e086513b9ee5efc0aa5770ecb57778af", "tree": "4fec50b38253288746ac4b4ea6d4bf5216b0c53b", "parents": [ "26ec3c646e75ce7a69fda429d68fcbdcd5eacc62" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Feb 15 22:04:37 2011 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Mar 23 16:36:50 2011 -0400" }, "message": "pagemap: close races with suid execve\n\njust use mm_for_maps()\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "26ec3c646e75ce7a69fda429d68fcbdcd5eacc62", "tree": "5b5e29272fbd9a99111a9042a84522bc06f61219", "parents": [ "bd23a539d0733c9f9ec3f9fc628491fad2658e82" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Feb 15 21:24:05 2011 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Mar 23 16:36:49 2011 -0400" }, "message": "make sessionid permissions in /proc/*/task/* match those in /proc/*\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "ae50adcb0ac4cde67a7aec8ae67249d1b2be2948", "tree": "757ea609da68ae08471bc2d0f689aa287ee89cbf", "parents": [ "3979491701cfb2aa7477f5baf40553355391418b" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Feb 16 10:04:50 2011 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Thu Mar 10 03:41:53 2011 -0500" }, "message": "/proc/self is never going to be invalidated...\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "dabb16f639820267b3850d804571c70bd93d4e07", "tree": "7da59e6133cd2f820389574ac9206c56e046f5d4", "parents": [ "d0a21265dfb5fa8ae54e90d0fb6d1c215b10a28a" ], "author": { "name": "Mandeep Singh Baines", "email": "msb@chromium.org", "time": "Thu Jan 13 15:46:05 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 13 17:32:35 2011 -0800" }, "message": "oom: allow a non-CAP_SYS_RESOURCE proces to oom_score_adj down\n\nWe\u0027d like to be able to oom_score_adj a process up/down as it\nenters/leaves the foreground. Currently, it is not possible to oom_adj\ndown without CAP_SYS_RESOURCE. This patch allows a task to decrease its\noom_score_adj back to the value that a CAP_SYS_RESOURCE thread set it to\nor its inherited value at fork. Assuming the thread that has forked it\nhas oom_score_adj of 0, each process could decrease it back from 0 upon\nactivation unless a CAP_SYS_RESOURCE thread elevated it to something\nhigher.\n\nAlternative considered:\n\n* a setuid binary\n* a daemon with CAP_SYS_RESOURCE\n\nSince you don\u0027t wan\u0027t all processes to be able to reduce their oom_adj, a\nsetuid or daemon implementation would be complex. The alternatives also\nhave much higher overhead.\n\nThis patch updated from original patch based on feedback from David\nRientjes.\n\nSigned-off-by: Mandeep Singh Baines \u003cmsb@chromium.org\u003e\nAcked-by: David Rientjes \u003crientjes@google.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Ying Han \u003cyinghan@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c6a340584607f653e10549c76dd427d4780c8f2c", "tree": "20e82a1dd34f4b2f7477bf02b398759ba026d772", "parents": [ "6d1b6e4eff89475785f60fa00f65da780f869f36" ], "author": { "name": "Jovi Zhang", "email": "bookjovi@gmail.com", "time": "Wed Jan 12 17:00:34 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 13 08:03:16 2011 -0800" }, "message": "proc: use single_open() correctly\n\nsingle_open()\u0027s third argument is for copying into seq_file-\u003eprivate. Use\nthat, rather than open-coding it.\n\nSigned-off-by: Jovi Zhang \u003cbookjovi@gmail.com\u003e\nAcked-by: David Rientjes \u003crientjes@google.com\u003e\nAcked-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nReviewed-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "9d6de12f70d2fb1487c4f482a21fed25fe74e0fd", "tree": "a5bc7cb77c710418c44e2b1c009e80d79e12e3ab", "parents": [ "a2ade7b6ca37c808128810687cd56e8a44443e65" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Wed Jan 12 17:00:32 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 13 08:03:16 2011 -0800" }, "message": "proc: use seq_puts()/seq_putc() where possible\n\nFor string without format specifiers, use seq_puts().\nFor seq_printf(\"\\n\"), use seq_putc(\u0027\\n\u0027).\n\n text\t data\t bss\t dec\t hex\tfilename\n 61866\t 488\t 112\t 62466\t f402\tfs/proc/proc.o\n 61729\t 488\t 112\t 62329\t f379\tfs/proc/proc.o\n ----------------------------------------------------\n \t\t\t -139\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "34e49d4f635d6a800c4089c40fd254e12e451449", "tree": "097715098524f7cf997f5646af75f839b3744fa0", "parents": [ "1bdcd78e2445f1ef7097a3ae7ef12e8f9c4fb05f" ], "author": { "name": "Joe Perches", "email": "joe@perches.com", "time": "Wed Jan 12 17:00:30 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 13 08:03:16 2011 -0800" }, "message": "fs/proc/base.c, kernel/latencytop.c: convert sprintf_symbol() to %ps\n\nUse temporary lr for struct latency_record for improved readability and\nfewer columns used. Removed trailing space from output.\n\n[akpm@linux-foundation.org: coding-style fixes]\nSigned-off-by: Joe Perches \u003cjoe@perches.com\u003e\nCc: Jiri Kosina \u003ctrivial@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b4a45f5fe8078bfc10837dbd5b98735058bc4698", "tree": "df6f13a27610a3ec7eb4a661448cd779a8f84c79", "parents": [ "01539ba2a706ab7d35fc0667dff919ade7f87d63", "b3e19d924b6eaf2ca7d22cba99a517c5171007b6" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 08:56:33 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 08:56:33 2011 -0800" }, "message": "Merge branch \u0027vfs-scale-working\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/npiggin/linux-npiggin\n\n* \u0027vfs-scale-working\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/npiggin/linux-npiggin: (57 commits)\n fs: scale mntget/mntput\n fs: rename vfsmount counter helpers\n fs: implement faster dentry memcmp\n fs: prefetch inode data in dcache lookup\n fs: improve scalability of pseudo filesystems\n fs: dcache per-inode inode alias locking\n fs: dcache per-bucket dcache hash locking\n bit_spinlock: add required includes\n kernel: add bl_list\n xfs: provide simple rcu-walk ACL implementation\n btrfs: provide simple rcu-walk ACL implementation\n ext2,3,4: provide simple rcu-walk ACL implementation\n fs: provide simple rcu-walk generic_check_acl implementation\n fs: provide rcu-walk aware permission i_ops\n fs: rcu-walk aware d_revalidate method\n fs: cache optimise dentry and inode for rcu-walk\n fs: dcache reduce branches in lookup path\n fs: dcache remove d_mounted\n fs: fs_struct use seqlock\n fs: rcu-walk for path lookup\n ...\n" }, { "commit": "b74c79e99389cd79b31fcc08f82c24e492e63c7e", "tree": "763c6b412517306670bc625e90035f2d16bb739f", "parents": [ "34286d6662308d82aed891852d04c7c3a2649b16" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:58 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:29 2011 +1100" }, "message": "fs: provide rcu-walk aware permission i_ops\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "34286d6662308d82aed891852d04c7c3a2649b16", "tree": "c4b7311404d302e7cb94df7a4690298e1059910a", "parents": [ "44a7d7a878c9cbb74f236ea755b25b6b2e26a9a9" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:57 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:29 2011 +1100" }, "message": "fs: rcu-walk aware d_revalidate method\n\nRequire filesystems be aware of .d_revalidate being called in rcu-walk\nmode (nd-\u003eflags \u0026 LOOKUP_RCU). For now do a simple push down, returning\n-ECHILD from all implementations.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "fb045adb99d9b7c562dc7fef834857f78249daa1", "tree": "1fd6a4024fffeec568abe100d730589bfdb81c38", "parents": [ "5f57cbcc02cf18f6b22ef4066bb10afeb8f930ff" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:55 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:28 2011 +1100" }, "message": "fs: dcache reduce branches in lookup path\n\nReduce some branches and memory accesses in dcache lookup by adding dentry\nflags to indicate common d_ops are set, rather than having to check them.\nThis saves a pointer memory access (dentry-\u003ed_op) in common path lookup\nsituations, and saves another pointer load and branch in cases where we\nhave d_op but not the particular operation.\n\nPatched with:\n\ngit grep -E \u0027[.\u003e]([[:space:]])*d_op([[:space:]])*\u003d\u0027 | xargs sed -e \u0027s/\\([^\\t ]*\\)-\u003ed_op \u003d \\(.*\\);/d_set_d_op(\\1, \\2);/\u0027 -e \u0027s/\\([^\\t ]*\\)\\.d_op \u003d \\(.*\\);/d_set_d_op(\\\u0026\\1, \\2);/\u0027 -i\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "fe15ce446beb3a33583af81ffe6c9d01a75314ed", "tree": "bc8af66b6dd2d0f21a2a3f48a19975ae2cdbae4e", "parents": [ "5eef7fa905c814826f518aca2d414ca77508ce30" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:23 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:18 2011 +1100" }, "message": "fs: change d_delete semantics\n\nChange d_delete from a dentry deletion notification to a dentry caching\nadvise, more like -\u003edrop_inode. Require it to be constant and idempotent,\nand not take d_lock. This is how all existing filesystems use the callback\nanyway.\n\nThis makes fine grained dentry locking of dput and dentry lru scanning\nmuch simpler.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "8e9255e6a2141e050d51bc4d96dbef494a87d653", "tree": "f190b142830153eaab05555a93c4f71a144ba3d4", "parents": [ "5091faa449ee0b7d73bc296a93bca9540fc51d0a", "6313e3c21743cc88bb5bd8aa72948ee1e83937b6" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Dec 08 20:15:26 2010 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Dec 08 20:15:29 2010 +0100" }, "message": "Merge branch \u0027linus\u0027 into sched/core\n\nMerge reason: we want to queue up dependent cleanup\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "7b2a69ba7055da9a04eb96aa7b38c8e3280aaaa5", "tree": "50b564e78fcb708a35ded72ed5cbd58cc12ce5c5", "parents": [ "11e8896474495dec7ce19a542f67def847ec208f" ], "author": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Sun Dec 05 15:51:21 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Dec 05 16:39:45 2010 -0800" }, "message": "Revert \"vfs: show unreachable paths in getcwd and proc\"\n\nBecause it caused a chroot ttyname regression in 2.6.36.\n\nAs of 2.6.36 ttyname does not work in a chroot. It has already been\nreported that screen breaks, and for me this breaks an automated\ndistribution testsuite, that I need to preserve the ability to run the\nexisting binaries on for several more years. glibc 2.11.3 which has a\nfix for this is not an option.\n\nThe root cause of this breakage is:\n\n commit 8df9d1a4142311c084ffeeacb67cd34d190eff74\n Author: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\n Date: Tue Aug 10 11:41:41 2010 +0200\n\n vfs: show unreachable paths in getcwd and proc\n\n Prepend \"(unreachable)\" to path strings if the path is not reachable\n from the current root.\n\n Two places updated are\n - the return string from getcwd()\n - and symlinks under /proc/$PID.\n\n Other uses of d_path() are left unchanged (we know that some old\n software crashes if /proc/mounts is changed).\n\n Signed-off-by: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\n Signed-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n\nSo remove the nice sounding, but ultimately ill advised change to how\n/proc/fd symlinks work.\n\nSigned-off-by: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5091faa449ee0b7d73bc296a93bca9540fc51d0a", "tree": "55f5e96e189af65c85c769fce48627b8a5abb86b", "parents": [ "822bc180a7f7a7bc5fcaaea195f41b487cc8cae8" ], "author": { "name": "Mike Galbraith", "email": "efault@gmx.de", "time": "Tue Nov 30 14:18:03 2010 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Nov 30 16:03:35 2010 +0100" }, "message": "sched: Add \u0027autogroup\u0027 scheduling feature: automated per session task groups\n\nA recurring complaint from CFS users is that parallel kbuild has\na negative impact on desktop interactivity. This patch\nimplements an idea from Linus, to automatically create task\ngroups. Currently, only per session autogroups are implemented,\nbut the patch leaves the way open for enhancement.\n\nImplementation: each task\u0027s signal struct contains an inherited\npointer to a refcounted autogroup struct containing a task group\npointer, the default for all tasks pointing to the\ninit_task_group. When a task calls setsid(), a new task group\nis created, the process is moved into the new task group, and a\nreference to the preveious task group is dropped. Child\nprocesses inherit this task group thereafter, and increase it\u0027s\nrefcount. When the last thread of a process exits, the\nprocess\u0027s reference is dropped, such that when the last process\nreferencing an autogroup exits, the autogroup is destroyed.\n\nAt runqueue selection time, IFF a task has no cgroup assignment,\nits current autogroup is used.\n\nAutogroup bandwidth is controllable via setting it\u0027s nice level\nthrough the proc filesystem:\n\n cat /proc/\u003cpid\u003e/autogroup\n\nDisplays the task\u0027s group and the group\u0027s nice level.\n\n echo \u003cnice level\u003e \u003e /proc/\u003cpid\u003e/autogroup\n\nSets the task group\u0027s shares to the weight of nice \u003clevel\u003e task.\nSetting nice level is rate limited for !admin users due to the\nabuse risk of task group locking.\n\nThe feature is enabled from boot by default if\nCONFIG_SCHED_AUTOGROUP\u003dy is selected, but can be disabled via\nthe boot option noautogroup, and can also be turned on/off on\nthe fly via:\n\n echo [01] \u003e /proc/sys/kernel/sched_autogroup_enabled\n\n... which will automatically move tasks to/from the root task group.\n\nSigned-off-by: Mike Galbraith \u003cefault@gmx.de\u003e\nAcked-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Markus Trippelsdorf \u003cmarkus@trippelsdorf.de\u003e\nCc: Mathieu Desnoyers \u003cmathieu.desnoyers@efficios.com\u003e\nCc: Paul Turner \u003cpjt@google.com\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\n[ Removed the task_group_path() debug code, and fixed !EVENTFD build failure. ]\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nLKML-Reference: \u003c1290281700.28711.9.camel@maggy.simson.net\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "9b1bf12d5d51bca178dea21b04a0805e29d60cf1", "tree": "902a2c0e5882a2152da59a589958d6426dc84643", "parents": [ "b84011508360d6885a9d95a235ec77d56f133377" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Wed Oct 27 15:34:08 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Oct 27 18:03:12 2010 -0700" }, "message": "signals: move cred_guard_mutex from task_struct to signal_struct\n\nOleg Nesterov pointed out we have to prevent multiple-threads-inside-exec\nitself and we can reuse -\u003ecred_guard_mutex for it. Yes, concurrent\nexecve() has no worth.\n\nLet\u0027s move -\u003ecred_guard_mutex from task_struct to signal_struct. It\nnaturally prevent multiple-threads-inside-exec.\n\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nReviewed-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nAcked-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "426e1f5cec4821945642230218876b0e89aafab1", "tree": "2728ace018d0698886989da586210ef1543a7098", "parents": [ "9e5fca251f44832cb996961048ea977f80faf6ea", "63997e98a3be68d7cec806d22bf9b02b2e1daabb" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 26 17:58:44 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 26 17:58:44 2010 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (52 commits)\n split invalidate_inodes()\n fs: skip I_FREEING inodes in writeback_sb_inodes\n fs: fold invalidate_list into invalidate_inodes\n fs: do not drop inode_lock in dispose_list\n fs: inode split IO and LRU lists\n fs: switch bdev inode bdi\u0027s correctly\n fs: fix buffer invalidation in invalidate_list\n fsnotify: use dget_parent\n smbfs: use dget_parent\n exportfs: use dget_parent\n fs: use RCU read side protection in d_validate\n fs: clean up dentry lru modification\n fs: split __shrink_dcache_sb\n fs: improve DCACHE_REFERENCED usage\n fs: use percpu counter for nr_dentry and nr_dentry_unused\n fs: simplify __d_free\n fs: take dcache_lock inside __d_path\n fs: do not assign default i_ino in new_inode\n fs: introduce a per-cpu last_ino allocator\n new helper: ihold()\n ...\n" }, { "commit": "d19d5476f4b9f91d2de92b91588bb118beba6c0d", "tree": "b267c225c2b7507f7e4900676649b20e56e06ba2", "parents": [ "723548bff1dde9ab6bdb23f4bb92277c4da49473" ], "author": { "name": "David Rientjes", "email": "rientjes@google.com", "time": "Tue Oct 26 14:21:26 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 26 16:52:05 2010 -0700" }, "message": "oom: fix locking for oom_adj and oom_score_adj\n\nThe locking order in oom_adjust_write() and oom_score_adj_write() for\ntask-\u003ealloc_lock and task-\u003esighand-\u003esiglock is reversed, and lockdep\nnotices that irqs could encounter an ABBA scenario.\n\nThis fixes the locking order so that we always take task_lock(task) prior\nto lock_task_sighand(task).\n\nSigned-off-by: David Rientjes \u003crientjes@google.com\u003e\nReported-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Ying Han \u003cyinghan@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "723548bff1dde9ab6bdb23f4bb92277c4da49473", "tree": "7c4b97cb80003caae19a849e9ffb490be943bbf2", "parents": [ "1e99bad0d9c12a4aaa60cd812c84ef152564bcf5" ], "author": { "name": "David Rientjes", "email": "rientjes@google.com", "time": "Tue Oct 26 14:21:25 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 26 16:52:05 2010 -0700" }, "message": "oom: rewrite error handling for oom_adj and oom_score_adj tunables\n\nIt\u0027s better to use proper error handling in oom_adjust_write() and\noom_score_adj_write() instead of duplicating the locking order on various\nexit paths.\n\nSuggested-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: David Rientjes \u003crientjes@google.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Ying Han \u003cyinghan@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3d5992d2ac7dc09aed8ab537cba074589f0f0a52", "tree": "0fbb51026e8aa13ddd7a6516c04471ceb97bc277", "parents": [ "0f4d208f1975f16f269134cee5f44c1f048581da" ], "author": { "name": "Ying Han", "email": "yinghan@google.com", "time": "Tue Oct 26 14:21:23 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 26 16:52:05 2010 -0700" }, "message": "oom: add per-mm oom disable count\n\nIt\u0027s pointless to kill a task if another thread sharing its mm cannot be\nkilled to allow future memory freeing. A subsequent patch will prevent\nkills in such cases, but first it\u0027s necessary to have a way to flag a task\nthat shares memory with an OOM_DISABLE task that doesn\u0027t incur an\nadditional tasklist scan, which would make select_bad_process() an O(n^2)\nfunction.\n\nThis patch adds an atomic counter to struct mm_struct that follows how\nmany threads attached to it have an oom_score_adj of OOM_SCORE_ADJ_MIN.\nThey cannot be killed by the kernel, so their memory cannot be freed in\noom conditions.\n\nThis only requires task_lock() on the task that we\u0027re operating on, it\ndoes not require mm-\u003emmap_sem since task_lock() pins the mm and the\noperation is atomic.\n\n[rientjes@google.com: changelog and sys_unshare() code]\n[rientjes@google.com: protect oom_disable_count with task_lock in fork]\n[rientjes@google.com: use old_mm for oom_disable_count in exec]\nSigned-off-by: Ying Han \u003cyinghan@google.com\u003e\nSigned-off-by: David Rientjes \u003crientjes@google.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "85fe4025c616a7c0ed07bc2fc8c5371b07f3888c", "tree": "7a5db7accb6192f2911f2473b4e3191227b914cc", "parents": [ "f991bd2e14210fb93d722cb23e54991de20e8a3d" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Sat Oct 23 11:19:54 2010 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Oct 25 21:26:11 2010 -0400" }, "message": "fs: do not assign default i_ino in new_inode\n\nInstead of always assigning an increasing inode number in new_inode\nmove the call to assign it into those callers that actually need it.\nFor now callers that need it is estimated conservatively, that is\nthe call is added to all filesystems that do not assign an i_ino\nby themselves. For a few more filesystems we can avoid assigning\nany inode number given that they aren\u0027t user visible, and for others\nit could be done lazily when an inode number is actually needed,\nbut that\u0027s left for later patches.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Dave Chinner \u003cdchinner@redhat.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "4a3956c790290efeb647bbb0c3a90476bb57800e", "tree": "18abb41325273d23ae271e49627f01054c5baeb6", "parents": [ "ba10f486658c0ca1bc84c936f6a996e40d071453" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Fri Oct 01 14:20:22 2010 -0700" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Oct 25 21:18:21 2010 -0400" }, "message": "vfs: introduce FMODE_UNSIGNED_OFFSET for allowing negative f_pos\n\nNow, rw_verify_area() checsk f_pos is negative or not. And if negative,\nreturns -EINVAL.\n\nBut, some special files as /dev/(k)mem and /proc/\u003cpid\u003e/mem etc.. has\nnegative offsets. And we can\u0027t do any access via read/write to the\nfile(device).\n\nSo introduce FMODE_UNSIGNED_OFFSET to allow negative file offsets.\n\nSigned-off-by: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Al Viro \u003cviro@ZenIV.linux.org.uk\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "092e0e7e520a1fca03e13c9f2d157432a8657ff2", "tree": "451897252c4c08c4b5a8ef535da156f1e817e80b", "parents": [ "79f14b7c56d3b3ba58f8b43d1f70b9b71477a800", "776c163b1b93c8dfa5edba885bc2bfbc2d228a5f" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Oct 22 10:52:56 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Oct 22 10:52:56 2010 -0700" }, "message": "Merge branch \u0027llseek\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl\n\n* \u0027llseek\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl:\n vfs: make no_llseek the default\n vfs: don\u0027t use BKL in default_llseek\n llseek: automatically add .llseek fop\n libfs: use generic_file_llseek for simple_attr\n mac80211: disallow seeks in minstrel debug code\n lirc: make chardev nonseekable\n viotape: use noop_llseek\n raw: use explicit llseek file operations\n ibmasmfs: use generic_file_llseek\n spufs: use llseek in all file operations\n arm/omap: use generic_file_llseek in iommu_debug\n lkdtm: use generic_file_llseek in debugfs\n net/wireless: use generic_file_llseek in debugfs\n drm: use noop_llseek\n" }, { "commit": "6038f373a3dc1f1c26496e60b6c40b164716f07e", "tree": "a0d3bbd026eea41b9fc36b8c722cbaf56cd9f825", "parents": [ "1ec5584e3edf9c4bf2c88c846534d19cf986ba11" ], "author": { "name": "Arnd Bergmann", "email": "arnd@arndb.de", "time": "Sun Aug 15 18:52:59 2010 +0200" }, "committer": { "name": "Arnd Bergmann", "email": "arnd@arndb.de", "time": "Fri Oct 15 15:53:27 2010 +0200" }, "message": "llseek: automatically add .llseek fop\n\nAll file_operations should get a .llseek operation so we can make\nnonseekable_open the default for future file operations without a\n.llseek pointer.\n\nThe three cases that we can automatically detect are no_llseek, seq_lseek\nand default_llseek. For cases where we can we can automatically prove that\nthe file offset is always ignored, we use noop_llseek, which maintains\nthe current behavior of not returning an error from a seek.\n\nNew drivers should normally not use noop_llseek but instead use no_llseek\nand call nonseekable_open at open time. Existing drivers can be converted\nto do the same when the maintainer knows for certain that no user code\nrelies on calling seek on the device file.\n\nThe generated code is often incorrectly indented and right now contains\ncomments that clarify for each added line why a specific variant was\nchosen. In the version that gets submitted upstream, the comments will\nbe gone and I will manually fix the indentation, because there does not\nseem to be a way to do that using coccinelle.\n\nSome amount of new code is currently sitting in linux-next that should get\nthe same modifications, which I will do at the end of the merge window.\n\nMany thanks to Julia Lawall for helping me learn to write a semantic\npatch that does all this.\n\n\u003d\u003d\u003d\u003d\u003d begin semantic patch \u003d\u003d\u003d\u003d\u003d\n// This adds an llseek\u003d method to all file operations,\n// as a preparation for making no_llseek the default.\n//\n// The rules are\n// - use no_llseek explicitly if we do nonseekable_open\n// - use seq_lseek for sequential files\n// - use default_llseek if we know we access f_pos\n// - use noop_llseek if we know we don\u0027t access f_pos,\n// but we still want to allow users to call lseek\n//\n@ open1 exists @\nidentifier nested_open;\n@@\nnested_open(...)\n{\n\u003c+...\nnonseekable_open(...)\n...+\u003e\n}\n\n@ open exists@\nidentifier open_f;\nidentifier i, f;\nidentifier open1.nested_open;\n@@\nint open_f(struct inode *i, struct file *f)\n{\n\u003c+...\n(\nnonseekable_open(...)\n|\nnested_open(...)\n)\n...+\u003e\n}\n\n@ read disable optional_qualifier exists @\nidentifier read_f;\nidentifier f, p, s, off;\ntype ssize_t, size_t, loff_t;\nexpression E;\nidentifier func;\n@@\nssize_t read_f(struct file *f, char *p, size_t s, loff_t *off)\n{\n\u003c+...\n(\n *off \u003d E\n|\n *off +\u003d E\n|\n func(..., off, ...)\n|\n E \u003d *off\n)\n...+\u003e\n}\n\n@ read_no_fpos disable optional_qualifier exists @\nidentifier read_f;\nidentifier f, p, s, off;\ntype ssize_t, size_t, loff_t;\n@@\nssize_t read_f(struct file *f, char *p, size_t s, loff_t *off)\n{\n... when !\u003d off\n}\n\n@ write @\nidentifier write_f;\nidentifier f, p, s, off;\ntype ssize_t, size_t, loff_t;\nexpression E;\nidentifier func;\n@@\nssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off)\n{\n\u003c+...\n(\n *off \u003d E\n|\n *off +\u003d E\n|\n func(..., off, ...)\n|\n E \u003d *off\n)\n...+\u003e\n}\n\n@ write_no_fpos @\nidentifier write_f;\nidentifier f, p, s, off;\ntype ssize_t, size_t, loff_t;\n@@\nssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off)\n{\n... when !\u003d off\n}\n\n@ fops0 @\nidentifier fops;\n@@\nstruct file_operations fops \u003d {\n ...\n};\n\n@ has_llseek depends on fops0 @\nidentifier fops0.fops;\nidentifier llseek_f;\n@@\nstruct file_operations fops \u003d {\n...\n .llseek \u003d llseek_f,\n...\n};\n\n@ has_read depends on fops0 @\nidentifier fops0.fops;\nidentifier read_f;\n@@\nstruct file_operations fops \u003d {\n...\n .read \u003d read_f,\n...\n};\n\n@ has_write depends on fops0 @\nidentifier fops0.fops;\nidentifier write_f;\n@@\nstruct file_operations fops \u003d {\n...\n .write \u003d write_f,\n...\n};\n\n@ has_open depends on fops0 @\nidentifier fops0.fops;\nidentifier open_f;\n@@\nstruct file_operations fops \u003d {\n...\n .open \u003d open_f,\n...\n};\n\n// use no_llseek if we call nonseekable_open\n////////////////////////////////////////////\n@ nonseekable1 depends on !has_llseek \u0026\u0026 has_open @\nidentifier fops0.fops;\nidentifier nso ~\u003d \"nonseekable_open\";\n@@\nstruct file_operations fops \u003d {\n... .open \u003d nso, ...\n+.llseek \u003d no_llseek, /* nonseekable */\n};\n\n@ nonseekable2 depends on !has_llseek @\nidentifier fops0.fops;\nidentifier open.open_f;\n@@\nstruct file_operations fops \u003d {\n... .open \u003d open_f, ...\n+.llseek \u003d no_llseek, /* open uses nonseekable */\n};\n\n// use seq_lseek for sequential files\n/////////////////////////////////////\n@ seq depends on !has_llseek @\nidentifier fops0.fops;\nidentifier sr ~\u003d \"seq_read\";\n@@\nstruct file_operations fops \u003d {\n... .read \u003d sr, ...\n+.llseek \u003d seq_lseek, /* we have seq_read */\n};\n\n// use default_llseek if there is a readdir\n///////////////////////////////////////////\n@ fops1 depends on !has_llseek \u0026\u0026 !nonseekable1 \u0026\u0026 !nonseekable2 \u0026\u0026 !seq @\nidentifier fops0.fops;\nidentifier readdir_e;\n@@\n// any other fop is used that changes pos\nstruct file_operations fops \u003d {\n... .readdir \u003d readdir_e, ...\n+.llseek \u003d default_llseek, /* readdir is present */\n};\n\n// use default_llseek if at least one of read/write touches f_pos\n/////////////////////////////////////////////////////////////////\n@ fops2 depends on !fops1 \u0026\u0026 !has_llseek \u0026\u0026 !nonseekable1 \u0026\u0026 !nonseekable2 \u0026\u0026 !seq @\nidentifier fops0.fops;\nidentifier read.read_f;\n@@\n// read fops use offset\nstruct file_operations fops \u003d {\n... .read \u003d read_f, ...\n+.llseek \u003d default_llseek, /* read accesses f_pos */\n};\n\n@ fops3 depends on !fops1 \u0026\u0026 !fops2 \u0026\u0026 !has_llseek \u0026\u0026 !nonseekable1 \u0026\u0026 !nonseekable2 \u0026\u0026 !seq @\nidentifier fops0.fops;\nidentifier write.write_f;\n@@\n// write fops use offset\nstruct file_operations fops \u003d {\n... .write \u003d write_f, ...\n+\t.llseek \u003d default_llseek, /* write accesses f_pos */\n};\n\n// Use noop_llseek if neither read nor write accesses f_pos\n///////////////////////////////////////////////////////////\n\n@ fops4 depends on !fops1 \u0026\u0026 !fops2 \u0026\u0026 !fops3 \u0026\u0026 !has_llseek \u0026\u0026 !nonseekable1 \u0026\u0026 !nonseekable2 \u0026\u0026 !seq @\nidentifier fops0.fops;\nidentifier read_no_fpos.read_f;\nidentifier write_no_fpos.write_f;\n@@\n// write fops use offset\nstruct file_operations fops \u003d {\n...\n .write \u003d write_f,\n .read \u003d read_f,\n...\n+.llseek \u003d noop_llseek, /* read and write both use no f_pos */\n};\n\n@ depends on has_write \u0026\u0026 !has_read \u0026\u0026 !fops1 \u0026\u0026 !fops2 \u0026\u0026 !has_llseek \u0026\u0026 !nonseekable1 \u0026\u0026 !nonseekable2 \u0026\u0026 !seq @\nidentifier fops0.fops;\nidentifier write_no_fpos.write_f;\n@@\nstruct file_operations fops \u003d {\n... .write \u003d write_f, ...\n+.llseek \u003d noop_llseek, /* write uses no f_pos */\n};\n\n@ depends on has_read \u0026\u0026 !has_write \u0026\u0026 !fops1 \u0026\u0026 !fops2 \u0026\u0026 !has_llseek \u0026\u0026 !nonseekable1 \u0026\u0026 !nonseekable2 \u0026\u0026 !seq @\nidentifier fops0.fops;\nidentifier read_no_fpos.read_f;\n@@\nstruct file_operations fops \u003d {\n... .read \u003d read_f, ...\n+.llseek \u003d noop_llseek, /* read uses no f_pos */\n};\n\n@ depends on !has_read \u0026\u0026 !has_write \u0026\u0026 !fops1 \u0026\u0026 !fops2 \u0026\u0026 !has_llseek \u0026\u0026 !nonseekable1 \u0026\u0026 !nonseekable2 \u0026\u0026 !seq @\nidentifier fops0.fops;\n@@\nstruct file_operations fops \u003d {\n...\n+.llseek \u003d noop_llseek, /* no read or write fn */\n};\n\u003d\u003d\u003d\u003d\u003d End semantic patch \u003d\u003d\u003d\u003d\u003d\n\nSigned-off-by: Arnd Bergmann \u003carnd@arndb.de\u003e\nCc: Julia Lawall \u003cjulia@diku.dk\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\n" }, { "commit": "3036e7b490bf7878c6dae952eec5fb87b1106589", "tree": "559270d71bd6e920bc39a8af360b54fb5753984d", "parents": [ "f015ac3edd84ad72f88e08a4d83c56c360aae404" ], "author": { "name": "Jiri Olsa", "email": "jolsa@redhat.com", "time": "Thu Sep 30 15:15:33 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Oct 01 10:50:59 2010 -0700" }, "message": "proc: make /proc/pid/limits world readable\n\nHaving the limits file world readable will ease the task of system\nmanagement on systems where root privileges might be restricted.\n\nHaving admin restricted with root priviledges, he/she could not check\nother users process\u0027 limits.\n\nAlso it\u0027d align with most of the /proc stat files.\n\nSigned-off-by: Jiri Olsa \u003cjolsa@redhat.com\u003e\nAcked-by: Neil Horman \u003cnhorman@tuxdriver.com\u003e\nCc: Eugene Teo \u003ceugene@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8df9d1a4142311c084ffeeacb67cd34d190eff74", "tree": "512e018114ea506659fac73d838bfca0fb97a5a4", "parents": [ "ffd1f4ed5bddccf2277e3d8525bcedf1983319f8" ], "author": { "name": "Miklos Szeredi", "email": "mszeredi@suse.cz", "time": "Tue Aug 10 11:41:41 2010 +0200" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Aug 11 00:29:47 2010 -0400" }, "message": "vfs: show unreachable paths in getcwd and proc\n\nPrepend \"(unreachable)\" to path strings if the path is not reachable\nfrom the current root.\n\nTwo places updated are\n - the return string from getcwd()\n - and symlinks under /proc/$PID.\n\nOther uses of d_path() are left unchanged (we know that some old\nsoftware crashes if /proc/mounts is changed).\n\nSigned-off-by: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "f7ad3c6be90809b53b7f0ae9d4eaa45ce2564a79", "tree": "dc9b09188bab35320200f318b5e7b52f24dc43ad", "parents": [ "542ce7a9bc6b3838832ae0f4f8de30c667af8ff3" ], "author": { "name": "Miklos Szeredi", "email": "mszeredi@suse.cz", "time": "Tue Aug 10 11:41:36 2010 +0200" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Aug 11 00:28:20 2010 -0400" }, "message": "vfs: add helpers to get root and pwd\n\nAdd three helpers that retrieve a refcounted copy of the root and cwd\nfrom the supplied fs_struct.\n\n get_fs_root()\n get_fs_pwd()\n get_fs_root_and_pwd()\n\nSigned-off-by: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "5f248c9c251c60af3403902b26e08de43964ea0b", "tree": "6d3328e72a7e4015a64017eb30be18095c6a3c64", "parents": [ "f6cec0ae58c17522a7bc4e2f39dae19f199ab534", "dca332528bc69e05f67161e1ed59929633d5e63d" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Aug 10 11:26:52 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Aug 10 11:26:52 2010 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (96 commits)\n no need for list_for_each_entry_safe()/resetting with superblock list\n Fix sget() race with failing mount\n vfs: don\u0027t hold s_umount over close_bdev_exclusive() call\n sysv: do not mark superblock dirty on remount\n sysv: do not mark superblock dirty on mount\n btrfs: remove junk sb_dirt change\n BFS: clean up the superblock usage\n AFFS: wait for sb synchronization when needed\n AFFS: clean up dirty flag usage\n cifs: truncate fallout\n mbcache: fix shrinker function return value\n mbcache: Remove unused features\n add f_flags to struct statfs(64)\n pass a struct path to vfs_statfs\n update VFS documentation for method changes.\n All filesystems that need invalidate_inode_buffers() are doing that explicitly\n convert remaining -\u003eclear_inode() to -\u003eevict_inode()\n Make -\u003edrop_inode() just return whether inode needs to be dropped\n fs/inode.c:clear_inode() is gone\n fs/inode.c:evict() doesn\u0027t care about delete vs. non-delete paths now\n ...\n\nFix up trivial conflicts in fs/nilfs2/super.c\n" }, { "commit": "51b1bd2ace1595b72956224deda349efa880b693", "tree": "82732bb33d26379c05494dcdba8ea390ae0621db", "parents": [ "a63d83f427fbce97a6cea0db2e64b0eb8435cd10" ], "author": { "name": "David Rientjes", "email": "rientjes@google.com", "time": "Mon Aug 09 17:19:47 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Aug 09 20:45:02 2010 -0700" }, "message": "oom: deprecate oom_adj tunable\n\n/proc/pid/oom_adj is now deprecated so that that it may eventually be\nremoved. The target date for removal is August 2012.\n\nA warning will be printed to the kernel log if a task attempts to use this\ninterface. Future warning will be suppressed until the kernel is rebooted\nto prevent spamming the kernel log.\n\nSigned-off-by: David Rientjes \u003crientjes@google.com\u003e\nCc: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a63d83f427fbce97a6cea0db2e64b0eb8435cd10", "tree": "8ac229cdf6e2289d97e82e35774057106fe7f4a2", "parents": [ "74bcbf40546bb7500f2a7ba4ff3cc056a6bd004a" ], "author": { "name": "David Rientjes", "email": "rientjes@google.com", "time": "Mon Aug 09 17:19:46 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Aug 09 20:45:02 2010 -0700" }, "message": "oom: badness heuristic rewrite\n\nThis a complete rewrite of the oom killer\u0027s badness() heuristic which is\nused to determine which task to kill in oom conditions. The goal is to\nmake it as simple and predictable as possible so the results are better\nunderstood and we end up killing the task which will lead to the most\nmemory freeing while still respecting the fine-tuning from userspace.\n\nInstead of basing the heuristic on mm-\u003etotal_vm for each task, the task\u0027s\nrss and swap space is used instead. This is a better indication of the\namount of memory that will be freeable if the oom killed task is chosen\nand subsequently exits. This helps specifically in cases where KDE or\nGNOME is chosen for oom kill on desktop systems instead of a memory\nhogging task.\n\nThe baseline for the heuristic is a proportion of memory that each task is\ncurrently using in memory plus swap compared to the amount of \"allowable\"\nmemory. \"Allowable,\" in this sense, means the system-wide resources for\nunconstrained oom conditions, the set of mempolicy nodes, the mems\nattached to current\u0027s cpuset, or a memory controller\u0027s limit. The\nproportion is given on a scale of 0 (never kill) to 1000 (always kill),\nroughly meaning that if a task has a badness() score of 500 that the task\nconsumes approximately 50% of allowable memory resident in RAM or in swap\nspace.\n\nThe proportion is always relative to the amount of \"allowable\" memory and\nnot the total amount of RAM systemwide so that mempolicies and cpusets may\noperate in isolation; they shall not need to know the true size of the\nmachine on which they are running if they are bound to a specific set of\nnodes or mems, respectively.\n\nRoot tasks are given 3% extra memory just like __vm_enough_memory()\nprovides in LSMs. In the event of two tasks consuming similar amounts of\nmemory, it is generally better to save root\u0027s task.\n\nBecause of the change in the badness() heuristic\u0027s baseline, it is also\nnecessary to introduce a new user interface to tune it. It\u0027s not possible\nto redefine the meaning of /proc/pid/oom_adj with a new scale since the\nABI cannot be changed for backward compatability. Instead, a new tunable,\n/proc/pid/oom_score_adj, is added that ranges from -1000 to +1000. It may\nbe used to polarize the heuristic such that certain tasks are never\nconsidered for oom kill while others may always be considered. The value\nis added directly into the badness() score so a value of -500, for\nexample, means to discount 50% of its memory consumption in comparison to\nother tasks either on the system, bound to the mempolicy, in the cpuset,\nor sharing the same memory controller.\n\n/proc/pid/oom_adj is changed so that its meaning is rescaled into the\nunits used by /proc/pid/oom_score_adj, and vice versa. Changing one of\nthese per-task tunables will rescale the value of the other to an\nequivalent meaning. Although /proc/pid/oom_adj was originally defined as\na bitshift on the badness score, it now shares the same linear growth as\n/proc/pid/oom_score_adj but with different granularity. This is required\nso the ABI is not broken with userspace applications and allows oom_adj to\nbe deprecated for future removal.\n\nSigned-off-by: David Rientjes \u003crientjes@google.com\u003e\nCc: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "74bcbf40546bb7500f2a7ba4ff3cc056a6bd004a", "tree": "39411d83f448da818368043af9b52e9b405a2002", "parents": [ "cef1d3523d33ebc35fc29e454b1f4bab953fabbf" ], "author": { "name": "Andrew Morton", "email": "akpm@linux-foundation.org", "time": "Mon Aug 09 17:19:43 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Aug 09 20:45:02 2010 -0700" }, "message": "oom: move badness() declaration into oom.h\n\nCc: Minchan Kim \u003cminchan.kim@gmail.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "26ebc984913b6a8d86d724b3a79d2ed4ed574612", "tree": "9d293c6f8b1bc5120beaa173590dcd83cd0e2eb0", "parents": [ "f88ccad5886d5a864b8b0d48c666ee9998dec53f" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Mon Aug 09 17:19:37 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Aug 09 20:45:01 2010 -0700" }, "message": "oom: /proc/\u003cpid\u003e/oom_score treat kernel thread honestly\n\nIf a kernel thread is using use_mm(), badness() returns a positive value.\nThis is not a big issue because caller take care of it correctly. But\nthere is one exception, /proc/\u003cpid\u003e/oom_score calls badness() directly and\ndoesn\u0027t care that the task is a regular process.\n\nAnother example, /proc/1/oom_score return !0 value. But it\u0027s unkillable.\nThis incorrectness makes administration a little confusing.\n\nThis patch fixes it.\n\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Minchan Kim \u003cminchan.kim@gmail.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "1025774ce411f2bd4b059ad7b53f0003569b74fa", "tree": "2be221c205cb5579652a6063e8ee27d1c72d1bbd", "parents": [ "eef2380c187890816b73b1a4cb89a09203759469" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Fri Jun 04 11:30:02 2010 +0200" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Aug 09 16:47:37 2010 -0400" }, "message": "remove inode_setattr\n\nReplace inode_setattr with opencoded variants of it in all callers. This\nmoves the remaining call to vmtruncate into the filesystem methods where it\ncan be replaced with the proper truncate sequence.\n\nIn a few cases it was obvious that we would never end up calling vmtruncate\nso it was left out in the opencoded variant:\n\n spufs: explicitly checks for ATTR_SIZE earlier\n btrfs,hugetlbfs,logfs,dlmfs: explicitly clears ATTR_SIZE earlier\n ufs: contains an opencoded simple_seattr + truncate that sets the filesize just above\n\nIn addition to that ncpfs called inode_setattr with handcrafted iattrs,\nwhich allowed to trim down the opencoded variant.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "73d3646029138743989b6c213628484301a72eb1", "tree": "1df20844702dbf7d8d014ae08bdb479a8350533f", "parents": [ "b3ac022cb9dc5883505a88b159d1b240ad1ef405" ], "author": { "name": "Dan Carpenter", "email": "error27@gmail.com", "time": "Wed May 26 14:43:25 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:47 2010 -0700" }, "message": "proc: cleanup: remove unused assignments\n\nI removed 3 unused assignments. The first two get reset on the first\nstatement of their functions. For \"err\" in root.c we don\u0027t return an\nerror and we don\u0027t use the variable again.\n\nSigned-off-by: Dan Carpenter \u003cerror27@gmail.com\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\nAcked-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nReviewed-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7e49827cc937a742ae02078b483e3eb78f791a2a", "tree": "0f3e0a8483a41b2221c74b8286b2349af03dab04", "parents": [ "6e1be45aa6ba6a36c0312f65ecf311135c73001d" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Wed May 26 14:43:22 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:47 2010 -0700" }, "message": "proc: get_nr_threads() doesn\u0027t need -\u003esiglock any longer\n\nNow that task-\u003esignal can\u0027t go away get_nr_threads() doesn\u0027t need\n-\u003esiglock to read signal-\u003ecount.\n\nAlso, make it inline, move into sched.h, and convert 2 other proc users of\nsignal-\u003ecount to use this (now trivial) helper.\n\nHenceforth get_nr_threads() is the only valid user of signal-\u003ecount, we\nare ready to turn it into \"int nr_threads\" or, perhaps, kill it.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "98c89cdd3a292af3451e47a2a33132f5183861b0", "tree": "cfad77bcfd2d04fb0b9326a859803a1ab90b0757", "parents": [ "164d44fd92e79d5bce54d0d62df9f856f7b23925", "99df95a22f7cfcf85405d4edc07c2d953542f0dd" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed May 19 17:23:28 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed May 19 17:23:28 2010 -0700" }, "message": "Merge branch \u0027bkl/procfs\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing\n\n* \u0027bkl/procfs\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing:\n sunrpc: Include missing smp_lock.h\n procfs: Kill the bkl in ioctl\n procfs: Push down the bkl from ioctl\n procfs: Use generic_file_llseek in /proc/vmcore\n procfs: Use generic_file_llseek in /proc/kmsg\n procfs: Use generic_file_llseek in /proc/kcore\n procfs: Kill BKL in llseek on proc base\n" }, { "commit": "3835541dd481091c4dbf5ef83c08aed12e50fd61", "tree": "bb40567215e394392ed0167867a0bf2a5916a583", "parents": [ "9e584fbbd9fd4f0f10b8aafc9982df8d0b553e35" ], "author": { "name": "Jerome Marchand", "email": "jmarchan@redhat.com", "time": "Tue Apr 27 13:13:06 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Apr 27 16:26:03 2010 -0700" }, "message": "procfs: fix tid fdinfo\n\nCorrect the file_operations struct in fdinfo entry of tid_base_stuff[].\n\nPresently /proc/*/task/*/fdinfo contains symlinks to opened files like\n/proc/*/fd/.\n\nSigned-off-by: Jerome Marchand \u003cjmarchan@redhat.com\u003e\nCc: Alexander Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "87df842410ce5a86fdca9fbec0dba80d2aa88b6f", "tree": "e8d311184e8f2695a961935882ad5269724fce04", "parents": [ "2eaa9cfdf33b8d7fb7aff27792192e0019ae8fc6" ], "author": { "name": "Arnd Bergmann", "email": "arnd@arndb.de", "time": "Wed Mar 17 23:06:02 2010 +0100" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Fri Apr 09 16:29:12 2010 +0200" }, "message": "procfs: Kill BKL in llseek on proc base\n\nWe don\u0027t use the BKL elsewhere, so use generic_file_llseek\nso we can avoid default_llseek taking the BKL.\n\nSigned-off-by: Arnd Bergmann \u003carnd@arndb.de\u003e\n[restore proc_fdinfo_file_operations as non-seekable]\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: John Kacur \u003cjkacur@redhat.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Al Viro \u003cviro@ZenIV.linux.org.uk\u003e\n" }, { "commit": "336f5899d287f06d8329e208fc14ce50f7ec9698", "tree": "9b762d450d5eb248a6ff8317badb7e223d93ed58", "parents": [ "a4ab2773205e8b94c18625455f85e3b6bb9d7ad6", "db217dece3003df0841bacf9556b5c06aa097dae" ], "author": { "name": "Tejun Heo", "email": "tj@kernel.org", "time": "Mon Apr 05 11:37:28 2010 +0900" }, "committer": { "name": "Tejun Heo", "email": "tj@kernel.org", "time": "Mon Apr 05 11:37:28 2010 +0900" }, "message": "Merge branch \u0027master\u0027 into export-slabh\n" }, { "commit": "b95c35e76b29ba812e5dabdd91592e25ec640e93", "tree": "9584cf21e47baec986f5dc5455081e8538126be1", "parents": [ "30d1872d9eb3663b4cf7bdebcbf5cd465674cced" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Thu Apr 01 15:13:57 2010 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Apr 01 08:50:21 2010 -0700" }, "message": "oom: fix the unsafe usage of badness() in proc_oom_score()\n\nproc_oom_score(task) has a reference to task_struct, but that is all.\nIf this task was already released before we take tasklist_lock\n\n\t- we can\u0027t use task-\u003egroup_leader, it points to nowhere\n\n\t- it is not safe to call badness() even if this task is\n\t -\u003egroup_leader, has_intersects_mems_allowed() assumes\n\t it is safe to iterate over -\u003ethread_group list.\n\n\t- even worse, badness() can hit -\u003esignal \u003d\u003d NULL\n\nAdd the pid_alive() check to ensure __unhash_process() was not called.\n\nAlso, use \"task\" instead of task-\u003egroup_leader. badness() should return\nthe same result for any sub-thread. Currently this is not true, but\nthis should be changed anyway.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: stable@kernel.org\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5a0e3ad6af8660be21ca98a971cd00f331318c05", "tree": "5bfb7be11a03176a87296a43ac6647975c00a1d1", "parents": [ "ed391f4ebf8f701d3566423ce8f17e614cde9806" ], "author": { "name": "Tejun Heo", "email": "tj@kernel.org", "time": "Wed Mar 24 17:04:11 2010 +0900" }, "committer": { "name": "Tejun Heo", "email": "tj@kernel.org", "time": "Tue Mar 30 22:02:32 2010 +0900" }, "message": "include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h\n\npercpu.h is included by sched.h and module.h and thus ends up being\nincluded when building most .c files. percpu.h includes slab.h which\nin turn includes gfp.h making everything defined by the two files\nuniversally available and complicating inclusion dependencies.\n\npercpu.h -\u003e slab.h dependency is about to be removed. Prepare for\nthis change by updating users of gfp and slab facilities include those\nheaders directly instead of assuming availability. As this conversion\nneeds to touch large number of source files, the following script is\nused as the basis of conversion.\n\n http://userweb.kernel.org/~tj/misc/slabh-sweep.py\n\nThe script does the followings.\n\n* Scan files for gfp and slab usages and update includes such that\n only the necessary includes are there. ie. if only gfp is used,\n gfp.h, if slab is used, slab.h.\n\n* When the script inserts a new include, it looks at the include\n blocks and try to put the new include such that its order conforms\n to its surrounding. It\u0027s put in the include block which contains\n core kernel includes, in the same order that the rest are ordered -\n alphabetical, Christmas tree, rev-Xmas-tree or at the end if there\n doesn\u0027t seem to be any matching order.\n\n* If the script can\u0027t find a place to put a new include (mostly\n because the file doesn\u0027t have fitting include block), it prints out\n an error message indicating which .h file needs to be added to the\n file.\n\nThe conversion was done in the following steps.\n\n1. The initial automatic conversion of all .c files updated slightly\n over 4000 files, deleting around 700 includes and adding ~480 gfp.h\n and ~3000 slab.h inclusions. The script emitted errors for ~400\n files.\n\n2. Each error was manually checked. Some didn\u0027t need the inclusion,\n some needed manual addition while adding it to implementation .h or\n embedding .c file was more appropriate for others. This step added\n inclusions to around 150 files.\n\n3. The script was run again and the output was compared to the edits\n from #2 to make sure no file was left behind.\n\n4. Several build tests were done and a couple of problems were fixed.\n e.g. lib/decompress_*.c used malloc/free() wrappers around slab\n APIs requiring slab.h to be added manually.\n\n5. The script was run on all .h files but without automatically\n editing them as sprinkling gfp.h and slab.h inclusions around .h\n files could easily lead to inclusion dependency hell. Most gfp.h\n inclusion directives were ignored as stuff from gfp.h was usually\n wildly available and often used in preprocessor macros. Each\n slab.h inclusion directive was examined and added manually as\n necessary.\n\n6. percpu.h was updated not to include slab.h.\n\n7. Build test were done on the following configurations and failures\n were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my\n distributed build env didn\u0027t work with gcov compiles) and a few\n more options had to be turned off depending on archs to make things\n build (like ipr on powerpc/64 which failed due to missing writeq).\n\n * x86 and x86_64 UP and SMP allmodconfig and a custom test config.\n * powerpc and powerpc64 SMP allmodconfig\n * sparc and sparc64 SMP allmodconfig\n * ia64 SMP allmodconfig\n * s390 SMP allmodconfig\n * alpha SMP allmodconfig\n * um on x86_64 SMP allmodconfig\n\n8. percpu.h modifications were reverted so that it could be applied as\n a separate patch and serve as bisection point.\n\nGiven the fact that I had only a couple of failures from tests on step\n6, I\u0027m fairly confident about the coverage of this conversion patch.\nIf there is a breakage, it\u0027s likely to be something in one of the arch\nheaders which should be easily discoverable easily on most builds of\nthe specific arch.\n\nSigned-off-by: Tejun Heo \u003ctj@kernel.org\u003e\nGuess-its-ok-by: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nCc: Lee Schermerhorn \u003cLee.Schermerhorn@hp.com\u003e\n" }, { "commit": "0f2cc4ecd81dc1917a041dc93db0ada28f8356fa", "tree": "f128b50f48f50f0cda6d2b20b53e9ad6e2dfded3", "parents": [ "1fae4cfb97302289bb5df6a8195eb28385d0b002", "9643f5d94aadd47a5fa9754fb60f2c957de05903" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Mar 04 08:15:33 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Mar 04 08:15:33 2010 -0800" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (52 commits)\n init: Open /dev/console from rootfs\n mqueue: fix typo \"failues\" -\u003e \"failures\"\n mqueue: only set error codes if they are really necessary\n mqueue: simplify do_open() error handling\n mqueue: apply mathematics distributivity on mq_bytes calculation\n mqueue: remove unneeded info-\u003emessages initialization\n mqueue: fix mq_open() file descriptor leak on user-space processes\n fix race in d_splice_alias()\n set S_DEAD on unlink() and non-directory rename() victims\n vfs: add NOFOLLOW flag to umount(2)\n get rid of -\u003emnt_parent in tomoyo/realpath\n hppfs can use existing proc_mnt, no need for do_kern_mount() in there\n Mirror MS_KERNMOUNT in -\u003emnt_flags\n get rid of useless vfsmount_lock use in put_mnt_ns()\n Take vfsmount_lock to fs/internal.h\n get rid of insanity with namespace roots in tomoyo\n take check for new events in namespace (guts of mounts_poll()) to namespace.c\n Don\u0027t mess with generic_permission() under -\u003ed_lock in hpfs\n sanitize const/signedness for udf\n nilfs: sanitize const/signedness in dealing with -\u003ed_name.name\n ...\n\nFix up fairly trivial (famous last words...) conflicts in\ndrivers/infiniband/core/uverbs_main.c and security/tomoyo/realpath.c\n" }, { "commit": "9f5596af44514f99e3a654a4f7cb813354b9e516", "tree": "6a579bf387683b910bd32e8aa7edef9956e58dd1", "parents": [ "e21e7095a78867364d7aa9223d833ccb966f93f3" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Feb 05 00:40:25 2010 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Mar 03 14:07:59 2010 -0500" }, "message": "take check for new events in namespace (guts of mounts_poll()) to namespace.c\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "7dc52157982ab771f40e3c0b7dc55b954c3c2d19", "tree": "a41e39174d9535f0c678eb36249ceee4a1775d6b", "parents": [ "497f0ab39cd25bed317b29482c147c967f7ecd1f" ], "author": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Mon Feb 22 17:04:52 2010 -0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Feb 25 10:34:48 2010 +0100" }, "message": "vfs: Apply lockdep-based checking to rcu_dereference() uses\n\nAdd lockdep-ified RCU primitives to alloc_fd(), files_fdtable()\nand fcheck_files().\n\nCc: Alexander Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nCc: laijs@cn.fujitsu.com\nCc: dipankar@in.ibm.com\nCc: mathieu.desnoyers@polymtl.ca\nCc: josh@joshtriplett.org\nCc: dvhltc@us.ibm.com\nCc: niv@us.ibm.com\nCc: peterz@infradead.org\nCc: rostedt@goodmis.org\nCc: Valdis.Kletnieks@vt.edu\nCc: dhowells@redhat.com\nCc: Alexander Viro \u003cviro@zeniv.linux.org.uk\u003e\nLKML-Reference: \u003c1266887105-1528-8-git-send-email-paulmck@linux.vnet.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "7fee4868be91e71a3ee8e57289ebf5e10a12297e", "tree": "b2bdbfa885e60fb1c04c2b5fca30ba5fa150fecd", "parents": [ "ac278a9c505092dd82077a2446af8f9fc0d9c095" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Thu Jan 14 01:03:28 2010 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Feb 19 10:25:41 2010 -0500" }, "message": "Switch proc/self to nd_set_link()\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "86acdca1b63e6890540fa19495cfc708beff3d8b", "tree": "f589566363ef4f77098eba9ced48325f410168e6", "parents": [ "004b35063296b6772fa72404a35b498f1e71e87e" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Dec 22 23:45:11 2009 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Thu Jan 14 09:05:25 2010 -0500" }, "message": "fix autofs/afs/etc. magic mountpoint breakage\n\nWe end up trying to kfree() nd.last.name on open(\"/mnt/tmp\", O_CREAT)\nif /mnt/tmp is an autofs direct mount. The reason is that nd.last_type\nis bogus here; we want LAST_BIND for everything of that kind and we\nget LAST_NORM left over from finding parent directory.\n\nSo make sure that it *is* set properly; set to LAST_BIND before\ndoing -\u003efollow_link() - for normal symlinks it will be changed\nby __vfs_follow_link() and everything else needs it set that way.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "698ba7b5a3a7be772922340fade365c675b8243f", "tree": "3e251d4ee8cbd8489d75e7570b2d821395021d59", "parents": [ "d1da96aada79fd1d29ae4e3157120d1ce1e77594" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Tue Dec 15 16:47:37 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Dec 16 07:20:12 2009 -0800" }, "message": "elf: kill USE_ELF_CORE_DUMP\n\nCurrently all architectures but microblaze unconditionally define\nUSE_ELF_CORE_DUMP. The microblaze omission seems like an error to me, so\nlet\u0027s kill this ifdef and make sure we are the same everywhere.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nAcked-by: Hugh Dickins \u003chugh.dickins@tiscali.co.uk\u003e\nCc: \u003clinux-arch@vger.kernel.org\u003e\nCc: Michal Simek \u003cmichal.simek@petalogix.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "4614a696bd1c3a9af3a08f0e5874830a85b889d4", "tree": "0b363d89ce612ab8557d49ab8b0f49b8520ffa66", "parents": [ "7e1e0ef22c9ba9f797d7c4448feee722584bba5c" ], "author": { "name": "john stultz", "email": "johnstul@us.ibm.com", "time": "Mon Dec 14 18:00:05 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Dec 15 08:53:24 2009 -0800" }, "message": "procfs: allow threads to rename siblings via /proc/pid/tasks/tid/comm\n\nSetting a thread\u0027s comm to be something unique is a very useful ability\nand is helpful for debugging complicated threaded applications. However\ncurrently the only way to set a thread name is for the thread to name\nitself via the PR_SET_NAME prctl.\n\nHowever, there may be situations where it would be advantageous for a\nthread dispatcher to be naming the threads its managing, rather then\nhaving the threads self-describe themselves. This sort of behavior is\navailable on other systems via the pthread_setname_np() interface.\n\nThis patch exports a task\u0027s comm via proc/pid/comm and\nproc/pid/task/tid/comm interfaces, and allows thread siblings to write to\nthese values.\n\n[akpm@linux-foundation.org: cleanups]\nSigned-off-by: John Stultz \u003cjohnstul@us.ibm.com\u003e\nCc: Andi Kleen \u003candi@firstfloor.org\u003e\nCc: Arjan van de Ven \u003carjan@infradead.org\u003e\nCc: Mike Fulton \u003cfultonm@ca.ibm.com\u003e\nCc: Sean Foley \u003cSean_Foley@ca.ibm.com\u003e\nCc: Darren Hart \u003cdvhltc@us.ibm.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "29f12ca32122db98481150be09d35bd72b68045e", "tree": "df2bbe3d67451a6c51a5056a40cd8dfa09dd5b29", "parents": [ "15f3c476589c8778b0c10f1fb5160f9107c69556" ], "author": { "name": "Sukadev Bhattiprolu", "email": "sukadev@linux.vnet.ibm.com", "time": "Wed Nov 11 14:26:32 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Nov 12 07:25:57 2009 -0800" }, "message": "pidns: fix a leak in /proc dentries and inodes with pid namespaces.\n\nDaniel Lezcano reported a leak in \u0027struct pid\u0027 and \u0027struct pid_namespace\u0027\nthat is discussed in:\n\n\thttp://lkml.org/lkml/2009/10/2/159.\n\nTo summarize the thread, when container-init is terminated, it sets the\nPF_EXITING flag, zaps other processes in the container and waits to reap\nthem. As a part of reaping, the container-init should flush any /proc\ndentries associated with the processes. But because the container-init is\nitself exiting and the following PF_EXITING check, the dentries are not\nflushed, resulting in leak in /proc inodes and dentries.\n\nThis fix reverts the commit 7766755a2f249e7e0 (\"Fix /proc dcache deadlock\nin do_exit\") which introduced the check for PF_EXITING. At the time of\nthe commit, shrink_dcache_parent() flushed dentries from other filesystems\nalso and could have caused a deadlock which the commit fixed. But as\npointed out by Eric Biederman, after commit 0feae5c47aabdde59,\nshrink_dcache_parent() no longer affects other filesystems. So reverting\nthe commit is now safe.\n\nAs pointed out by Jan Kara, the leak is not as critical since the\nunclaimed space will be reclaimed under memory pressure or by:\n\n\techo 3 \u003e /proc/sys/vm/drop_caches\n\nBut since this check is no longer required, its best to remove it.\n\nSigned-off-by: Sukadev Bhattiprolu \u003csukadev@us.ibm.com\u003e\nReported-by: Daniel Lezcano \u003cdlezcano@fr.ibm.com\u003e\nAcked-by: Eric W. Biederman \u003cebiederm@xmission.com\u003e\nAcked-by: Jan Kara \u003cjack@ucw.cz\u003e\nCc: Andrea Arcangeli \u003candrea@cpushare.com\u003e\nCc: Serge Hallyn \u003cserue@us.ibm.com\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "cba8aafe1e07dfc8bae5ba78be8e02883bd34d31", "tree": "473586963e635921613db5e4ae8ac339ae497a18", "parents": [ "fb92a4b068be96799da3748c11cbd69760e44d7b" ], "author": { "name": "Vincent Li", "email": "macli@brc.ubc.ca", "time": "Tue Sep 22 16:45:38 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Sep 23 07:39:40 2009 -0700" }, "message": "fs/proc/base.c: fix proc_fault_inject_write() input sanity check\n\nRemove obfuscated zero-length input check and return -EINVAL instead of\n-EIO error to make the error message clear to user. Add whitespace\nstripping. No functionality changes.\n\nThe old code:\n\necho 1 \u003e /proc/pid/make-it-fail (ok)\necho 1foo \u003e /proc/pid/make-it-fail (-bash: echo: write error: Input/output error)\n\nThe new code:\n\necho 1 \u003e /proc/pid/make-it-fail (ok)\necho 1foo \u003e /proc/pid/make-it-fail (-bash: echo: write error: Invalid argument)\n\nThis patch is conservative in changes to not breaking existing\nscripts/applications.\n\nSigned-off-by: Vincent Li \u003cmacli@brc.ubc.ca\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "9b4d1cbef8f41aff2b3e4ca31f566c071fe601de", "tree": "fc64d537b5142646d917ad928e3fb1df4caf4655", "parents": [ "cff4edb591c153a779a27a3fd8e7bc1217f2f6b8" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Tue Sep 22 16:45:34 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Sep 23 07:39:40 2009 -0700" }, "message": "proc_flush_task: flush /proc/tid/task/pid when a sub-thread exits\n\nThe exiting sub-thread flushes /proc/pid only, but this doesn\u0027t buy too\nmuch: ps and friends mostly use /proc/tid/task/pid.\n\nRemove \"if (thread_group_leader())\" checks from proc_flush_task() path,\nthis means we always remove /proc/tid/task/pid dentry on exit, and this\nactually matches the comment above proc_flush_task().\n\nThe test-case:\n\n\tstatic void* tfunc(void *arg)\n\t{\n\t\tchar name[256];\n\n\t\tsprintf(name, \"/proc/%d/task/%ld/status\", getpid(), gettid());\n\t\tclose(open(name, O_RDONLY));\n\n\t\treturn NULL;\n\t}\n\n\tint main(void)\n\t{\n\t\tpthread_t t;\n\n\t\tfor (;;) {\n\t\t\tif (!pthread_create(\u0026t, NULL, \u0026tfunc, NULL))\n\t\t\t\tpthread_join(t, NULL);\n\t\t}\n\t}\n\nslabtop shows that pid/proc_inode_cache/etc grow quickly and\n\"indefinitely\" until the task is killed or shrink_slab() is called, not\ngood. And the main thread needs a lot of time to exit.\n\nThe same can happen if something like \"ps -efL\" runs continuously, while\nsome application spawns short-living threads.\n\nReported-by: \"James M. Leddy\" \u003cjleddy@redhat.com\u003e\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Dominic Duval \u003cdduval@redhat.com\u003e\nCc: Frank Hirtz \u003cfhirtz@redhat.com\u003e\nCc: \"Fuller, Johnray\" \u003cJohnray.Fuller@gs.com\u003e\nCc: Larry Woodman \u003clwoodman@redhat.com\u003e\nCc: Paul Batkowski \u003cpbatkowski@redhat.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" } ], "next": "cff4edb591c153a779a27a3fd8e7bc1217f2f6b8" }