)]}' { "log": [ { "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": "1aec7036d0c2996c86ce483ca0a28f3b20807b43", "tree": "718103f35e7882593ec9ad8994a6e004b3757381", "parents": [ "1d29b5a2ed7eb8862c9b66daf475f3e4c1a40299" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sat Jun 18 20:42:00 2011 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Jun 20 10:45:25 2011 -0400" }, "message": "proc_sys_permission() is OK in RCU mode\n\nnothing blocking there, since all instances of sysctl\n-\u003epermissions() method are non-blocking - both of them,\nthat is.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\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": "8b97b21e0f4f59801d05a5c536417f04ecfb5603", "tree": "47c95c95a4f93a4596dc57204176ceb432234eba", "parents": [ "99a15e21d96f6857dafab1e5167e5e8183215c9c", "793925334f32e9026c22baee5c3c340f47d4ef7e" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jun 16 15:02:20 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jun 16 15:02:20 2011 -0700" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/linux-2.6-nsfd\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/linux-2.6-nsfd:\n proc: Fix Oops on stat of /proc/\u003czombie pid\u003e/ns/net\n" }, { "commit": "793925334f32e9026c22baee5c3c340f47d4ef7e", "tree": "56682059a84cf6ee12b664ac32b42d431f8c4be8", "parents": [ "2c53b436a30867eb6b47dd7bab23ba638d1fb0d2" ], "author": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Wed Jun 15 12:47:04 2011 -0700" }, "committer": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Wed Jun 15 14:35:29 2011 -0700" }, "message": "proc: Fix Oops on stat of /proc/\u003czombie pid\u003e/ns/net\n\nDon\u0027t call iput with the inode half setup to be a namespace filedescriptor.\nInstead rearrange the code so that we don\u0027t initialize ei-\u003ens_ops until\nafter I ns_ops-\u003eget succeeds, preventing us from invoking ns_ops-\u003eput\nwhen ns_ops-\u003eget failed.\n\nReported-by: Ingo Saitz \u003cIngo.Saitz@stud.uni-hannover.de\u003e\nSigned-off-by: Eric W. Biederman \u003cebiederm@xmission.com\u003e\n" }, { "commit": "ff78fca2a03c08436535d3f7152a30752d8131d1", "tree": "314de976604243449825241d814fb80b9a1e89b4", "parents": [ "b99ca60c83a631adaba9c2fff8f2dd14d3517a61" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sun Jun 12 09:42:17 2011 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sun Jun 12 17:45:28 2011 -0400" }, "message": "fix leak in proc_set_super()\n\nset_anon_super() can fail...\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": "997c136f518c5debd63847e78e2a8694f56dcf90", "tree": "ac2ff48901be3e6834757675dcc177732e034a9f", "parents": [ "98bc93e505c03403479c6669c4ff97301cee6199" ], "author": { "name": "Olaf Hering", "email": "olaf@aepfle.de", "time": "Thu May 26 16:25:54 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 26 17:12:37 2011 -0700" }, "message": "fs/proc/vmcore.c: add hook to read_from_oldmem() to check for non-ram pages\n\nThe balloon driver in a Xen guest frees guest pages and marks them as\nmmio. When the kernel crashes and the crash kernel attempts to read the\noldmem via /proc/vmcore a read from ballooned pages will generate 100%\nload in dom0 because Xen asks qemu-dm for the page content. Since the\nreads come in as 8byte requests each ballooned page is tried 512 times.\n\nWith this change a hook can be registered which checks wether the given\npfn is really ram. The hook has to return a value \u003e 0 for ram pages, a\nvalue \u003c 0 on error (because the hypercall is not known) and 0 for non-ram\npages.\n\nThis will reduce the time to read /proc/vmcore. Without this change a\n512M guest with 128M crashkernel region needs 200 seconds to read it, with\nthis change it takes just 2 seconds.\n\nSigned-off-by: Olaf Hering \u003colaf@aepfle.de\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": "98bc93e505c03403479c6669c4ff97301cee6199", "tree": "0b6bf39cd6107d536b55fd245b9905cb5baa4e74", "parents": [ "30cd8903913dac7b0918807cac46be3ecde5a5a7" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Thu May 26 16:25:53 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 26 17:12:37 2011 -0700" }, "message": "proc: fix pagemap_read() error case\n\nCurrently, pagemap_read() has three error and/or corner case handling\nmistake.\n\n (1) If ppos parameter is wrong, mm refcount will be leak.\n (2) If count parameter is 0, mm refcount will be leak too.\n (3) If the current task is sleeping in kmalloc() and the system\n is out of memory and oom-killer kill the proc associated task,\n mm_refcount prevent the task free its memory. then system may\n hang up.\n\n\u003cQuote Hugh\u0027s explain why we shold call kmalloc() before get_mm()\u003e\n\n check_mem_permission gets a reference to the mm. If we\n __get_free_page after check_mem_permission, imagine what happens if the\n system is out of memory, and the mm we\u0027re looking at is selected for\n killing by the OOM killer: while we wait in __get_free_page for more\n memory, no memory is freed from the selected mm because it cannot reach\n exit_mmap while we hold that reference.\n\nThis patch fixes the above three.\n\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nCc: Jovi Zhang \u003cbookjovi@gmail.com\u003e\nAcked-by: Hugh Dickins \u003chughd@google.com\u003e\nCc: 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": "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": "a4dbf0ec2aa3e8aca6e63f598095750c232d50f1", "tree": "38ceee9851536b3f5969d642afb9614fba826f8e", "parents": [ "e130aa70f438855b4a0e13a5249951da001798d4" ], "author": { "name": "Yuanhan Liu", "email": "yuanhan.liu@linux.intel.com", "time": "Thu May 26 16:25:51 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 26 17:12:37 2011 -0700" }, "message": "proc/stat: use defined macro KMALLOC_MAX_SIZE\n\nThere is a macro for the max size kmalloc can allocate, so use it instead\nof a hardcoded number.\n\nSigned-off-by: Yuanhan Liu \u003cyuanhan.liu@linux.intel.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": "e130aa70f438855b4a0e13a5249951da001798d4", "tree": "12d661a9779bc764d4af89e1c8da4d190ba0db84", "parents": [ "0a8cb8e34149251ad1f280fe099a4f971554639a" ], "author": { "name": "Mike Frysinger", "email": "vapier@gentoo.org", "time": "Thu May 26 16:25:51 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 26 17:12:36 2011 -0700" }, "message": "proc: constify status array\n\nNo need for this local array to be writable, so mark it const.\n\nSigned-off-by: Mike Frysinger \u003cvapier@gentoo.org\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": "ca16d140af91febe25daeb9e032bf8bd46b8c31f", "tree": "a093c3f244a1bdfc2a50e271a7e6df3324df0f05", "parents": [ "4db70f73e56961b9bcdfd0c36c62847a18b7dbb5" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Thu May 26 19:16:19 2011 +0900" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 26 09:20:31 2011 -0700" }, "message": "mm: don\u0027t access vm_flags as \u0027int\u0027\n\nThe type of vma-\u003evm_flags is \u0027unsigned long\u0027. Neither \u0027int\u0027 nor\n\u0027unsigned int\u0027. This patch fixes such misuse.\n\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\n[ Changed to use a typedef - we\u0027ll extend it to cover more cases\n later, since there has been discussion about making it a 64-bit\n type.. - Linus ]\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "14d74e0cab7a7779a7ff0c3863c04c8a8e507106", "tree": "5e27d7495f8f7ce178b637d588ec42bd7b4173d8", "parents": [ "49a78d085fa6b44d6ed791923c7172a6433589c2", "956c920786694f51601a0ef7ee12956fd6aa216e" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed May 25 18:10:16 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed May 25 18:10:16 2011 -0700" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/linux-2.6-nsfd\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/linux-2.6-nsfd:\n net: fix get_net_ns_by_fd for !CONFIG_NET_NS\n ns proc: Return -ENOENT for a nonexistent /proc/self/ns/ entry.\n ns: Declare sys_setns in syscalls.h\n net: Allow setting the network namespace by fd\n ns proc: Add support for the ipc namespace\n ns proc: Add support for the uts namespace\n ns proc: Add support for the network namespace.\n ns: Introduce the setns syscall\n ns: proc files for namespace naming policy.\n" }, { "commit": "3f5785ec31adcb7cafa9135087297a38d9698cf8", "tree": "b7d06f14e1aea0292a88c4bc0305ea602f6ebd33", "parents": [ "8c1c77ff9be27137fa7cbbf51efedef1a2ae915b", "94265cf5f731c7df29fdfde262ca3e6d51e6828c" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed May 25 17:00:17 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed May 25 17:00:17 2011 -0700" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (89 commits)\n bonding: documentation and code cleanup for resend_igmp\n bonding: prevent deadlock on slave store with alb mode (v3)\n net: hold rtnl again in dump callbacks\n Add Fujitsu 1000base-SX PCI ID to tg3\n bnx2x: protect sequence increment with mutex\n sch_sfq: fix peek() implementation\n isdn: netjet - blacklist Digium TDM400P\n via-velocity: don\u0027t annotate MAC registers as packed\n xen: netfront: hold RTNL when updating features.\n sctp: fix memory leak of the ASCONF queue when free asoc\n net: make dev_disable_lro use physical device if passed a vlan dev (v2)\n net: move is_vlan_dev into public header file (v2)\n bug.h: Fix build with CONFIG_PRINTK disabled.\n wireless: fix fatal kernel-doc error + warning in mac80211.h\n wireless: fix cfg80211.h new kernel-doc warnings\n iwlagn: dbg_fixed_rate only used when CONFIG_MAC80211_DEBUGFS enabled\n dst: catch uninitialized metrics\n be2net: hash key for rss-config cmd not set\n bridge: initialize fake_rtable metrics\n net: fix __dst_destroy_metrics_generic()\n ...\n\nFix up trivial conflicts in drivers/staging/brcm80211/brcmfmac/wl_cfg80211.c\n" }, { "commit": "5b52fc890bece77bffb9fade69239f71384ef02b", "tree": "52848297984dba4c0f4106c5303a1a4bf0db92b0", "parents": [ "f2beb7983613ecca20a61604f01ab50cc7a797e6" ], "author": { "name": "Stephen Wilson", "email": "wilsons@start.ca", "time": "Tue May 24 17:12:49 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed May 25 08:39:35 2011 -0700" }, "message": "proc: allocate storage for numa_maps statistics once\n\nIn show_numa_map() we collect statistics into a numa_maps structure.\nSince the number of NUMA nodes can be very large, this structure is not a\ncandidate for stack allocation.\n\nInstead of going thru a kmalloc()+kfree() cycle each time show_numa_map()\nis invoked, perform the allocation just once when /proc/pid/numa_maps is\nopened.\n\nPerforming the allocation when numa_maps is opened, and thus before a\nreference to the target tasks mm is taken, eliminates a potential\nstalemate condition in the oom-killer as originally described by Hugh\nDickins:\n\n ... imagine what happens if the system is out of memory, and the mm\n we\u0027re looking at is selected for killing by the OOM killer: while\n we wait in __get_free_page for more memory, no memory is freed\n from the selected mm because it cannot reach exit_mmap while we hold\n that reference.\n\nSigned-off-by: Stephen Wilson \u003cwilsons@start.ca\u003e\nReviewed-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f2beb7983613ecca20a61604f01ab50cc7a797e6", "tree": "b8335e959493b9c97aee4a48f2c02f42144982a1", "parents": [ "f69ff943df6972aae96c10733b6847fa094d8a59" ], "author": { "name": "Stephen Wilson", "email": "wilsons@start.ca", "time": "Tue May 24 17:12:48 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed May 25 08:39:35 2011 -0700" }, "message": "proc: make struct proc_maps_private truly private\n\nNow that mm/mempolicy.c is no longer implementing /proc/pid/numa_maps\nthere is no need to export struct proc_maps_private to the world. Move it\nto fs/proc/internal.h instead.\n\nSigned-off-by: Stephen Wilson \u003cwilsons@start.ca\u003e\nReviewed-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f69ff943df6972aae96c10733b6847fa094d8a59", "tree": "b0812b5e0b1376f193a9db088ebd8856deabed00", "parents": [ "13057efb0a0063eb8042d99093ec88a52c4f1593" ], "author": { "name": "Stephen Wilson", "email": "wilsons@start.ca", "time": "Tue May 24 17:12:47 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed May 25 08:39:34 2011 -0700" }, "message": "mm: proc: move show_numa_map() to fs/proc/task_mmu.c\n\nMoving show_numa_map() from mempolicy.c to task_mmu.c solves several\nissues.\n\n - Having the show() operation \"miles away\" from the corresponding\n seq_file iteration operations is a maintenance burden.\n\n - The need to export ad hoc info like struct proc_maps_private is\n eliminated.\n\n - The implementation of show_numa_map() can be improved in a simple\n manner by cooperating with the other seq_file operations (start,\n stop, etc) -- something that would be messy to do without this\n change.\n\nSigned-off-by: Stephen Wilson \u003cwilsons@start.ca\u003e\nReviewed-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "62ca24baf1417e56fd2ae4ff07adfe7f6a2e42fc", "tree": "5359e4bc30e95134d766a9ff7a074b3bf32b8a9d", "parents": [ "618e724b8d79c6232daac49cb39b0723bf5c4b08" ], "author": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Wed May 11 15:42:08 2011 -0700" }, "committer": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Tue May 24 15:30:33 2011 -0700" }, "message": "ns proc: Return -ENOENT for a nonexistent /proc/self/ns/ entry.\n\nSpotted-by: Nathan Lynch \u003cntl@pobox.com\u003e\nSigned-off-by: Eric W. Biederman \u003cebiederm@xmission.com\u003e\n" }, { "commit": "31ec97d9cebac804814de298592648f7c18d8281", "tree": "f725fcce0d5a9d6d7bd64b777de0a44e71773d0e", "parents": [ "557eed603159b4e007c57d97fad1333ecebd3c2e", "daf8cf608d57a0b9f22276036e420cc82cf6ab4f" ], "author": { "name": "John W. Linville", "email": "linville@tuxdriver.com", "time": "Tue May 24 16:47:54 2011 -0400" }, "committer": { "name": "John W. Linville", "email": "linville@tuxdriver.com", "time": "Tue May 24 16:47:54 2011 -0400" }, "message": "Merge ssh://master.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem\n" }, { "commit": "011159a0a746e03ae42d559ce5c2a70138da3129", "tree": "c91c05bd65fc32dde3cdb07933e07d2ba92b6d72", "parents": [ "9368a9a2378ab721f82f59430a135b4ce4ff5109" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Sat May 14 00:12:48 2011 +0300" }, "committer": { "name": "John W. Linville", "email": "linville@tuxdriver.com", "time": "Mon May 16 14:25:28 2011 -0400" }, "message": "airo: correct proc entry creation interfaces\n\n* use proc_mkdir_mode() instead of create_proc_entry(S_IFDIR|...),\n export proc_mkdir_mode() for that, oh well.\n* don\u0027t supply S_IFREG to proc_create_data(), it\u0027s unnecessary\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nSigned-off-by: John W. Linville \u003clinville@tuxdriver.com\u003e\n" }, { "commit": "a00eaf11a223c63fbb212369d6db69ce4c55a2d1", "tree": "1c38d8591c229243cb09386a0f5b3737da421cf1", "parents": [ "34482e89a5218f0f9317abf1cfba3bb38b5c29dd" ], "author": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Sun Mar 07 18:48:39 2010 -0800" }, "committer": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Tue May 10 14:35:47 2011 -0700" }, "message": "ns proc: Add support for the ipc namespace\n\nAcked-by: Daniel Lezcano \u003cdaniel.lezcano@free.fr\u003e\nSigned-off-by: Eric W. Biederman \u003cebiederm@xmission.com\u003e\n" }, { "commit": "34482e89a5218f0f9317abf1cfba3bb38b5c29dd", "tree": "94a2c2409fbbef8a01aae589469ee44180e6e04f", "parents": [ "13b6f57623bc485e116344fe91fbcb29f149242b" ], "author": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Sun Mar 07 18:43:27 2010 -0800" }, "committer": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Tue May 10 14:35:35 2011 -0700" }, "message": "ns proc: Add support for the uts namespace\n\nAcked-by: Daniel Lezcano \u003cdaniel.lezcano@free.fr\u003e\nSigned-off-by: Eric W. Biederman \u003cebiederm@xmission.com\u003e\n" }, { "commit": "13b6f57623bc485e116344fe91fbcb29f149242b", "tree": "f2d43576e248ac61b967734a6ccd313b971fb430", "parents": [ "0663c6f8fa37d777ede74ff991a0cba3a42fcbd7" ], "author": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Sun Mar 07 18:14:23 2010 -0800" }, "committer": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Tue May 10 14:34:26 2011 -0700" }, "message": "ns proc: Add support for the network namespace.\n\nImplementing file descriptors for the network namespace\nis simple and straight forward.\n\nAcked-by: David S. Miller \u003cdavem@davemloft.net\u003e\nAcked-by: Daniel Lezcano \u003cdaniel.lezcano@free.fr\u003e\nSigned-off-by: Eric W. Biederman \u003cebiederm@xmission.com\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": "a09a79f66874c905af35d5bb5e5f2fdc7b6b894d", "tree": "9cb2ae1fef7083af91a49c19411e9871e0e59a37", "parents": [ "26822eebb25500fb0776c7c256a6af041e9f538b" ], "author": { "name": "Mikulas Patocka", "email": "mikulas@artax.karlin.mff.cuni.cz", "time": "Mon May 09 13:01:09 2011 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon May 09 16:22:07 2011 -0700" }, "message": "Don\u0027t lock guardpage if the stack is growing up\n\nLinux kernel excludes guard page when performing mlock on a VMA with\ndown-growing stack. However, some architectures have up-growing stack\nand locking the guard page should be excluded in this case too.\n\nThis patch fixes lvm2 on PA-RISC (and possibly other architectures with\nup-growing stack). lvm2 calculates number of used pages when locking and\nwhen unlocking and reports an internal error if the numbers mismatch.\n\n[ Patch changed fairly extensively to also fix /proc/\u003cpid\u003e/maps for the\n grows-up case, and to move things around a bit to clean it all up and\n share the infrstructure with the /proc bits.\n\n Tested on ia64 that has both grow-up and grow-down segments - Linus ]\n\nSigned-off-by: Mikulas Patocka \u003cmikulas@artax.karlin.mff.cuni.cz\u003e\nTested-by: Tony Luck \u003ctony.luck@gmail.com\u003e\nCc: stable@kernel.org\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\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": "76597cd31470fa130784c78fadb4dab2e624a723", "tree": "94387f243f4b8211352a95fda5b23bd12bbf8873", "parents": [ "16c29dafcc86024048f1dbb8349d31cb22c7c55a" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Mar 27 19:09:29 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Mar 27 19:09:29 2011 -0700" }, "message": "proc: fix oops on invalid /proc/\u003cpid\u003e/maps access\n\nWhen m_start returns an error, the seq_file logic will still call m_stop\nwith that error entry, so we\u0027d better make sure that we check it before\nusing it as a vma.\n\nIntroduced by commit ec6fd8a4355c (\"report errors in /proc/*/*map*\nsanely\"), which replaced NULL with various ERR_PTR() cases.\n\n(On ia64, you happen to get a unaligned fault instead of a page fault,\nsince the address used is generally some random error code like -EPERM)\n\nReported-by: Anca Emanuel \u003canca.emanuel@gmail.com\u003e\nReported-by: Tony Luck \u003ctony.luck@intel.com\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Américo Wang \u003cxiyou.wangcong@gmail.com\u003e\nCc: Stephen Wilson \u003cwilsons@start.ca\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\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": "52e9fc76d0d4b1e8adeee736172c6c23180059b2", "tree": "61fd430bd5848fc1598373675f8f6810e4af08b4", "parents": [ "4308eebbeb2026827d4492ce8c23d99f7f144a82" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Wed Mar 23 16:43:14 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Mar 23 19:46:58 2011 -0700" }, "message": "procfs: kill the global proc_mnt variable\n\nAfter the previous cleanup in proc_get_sb() the global proc_mnt has no\nreasons to exists, kill it.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nSigned-off-by: Eric W. Biederman \u003cebiederm@xmission.com\u003e\nSigned-off-by: Daniel Lezcano \u003cdaniel.lezcano@free.fr\u003e\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nAcked-by: Serge E. Hallyn \u003cserge@hallyn.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "4308eebbeb2026827d4492ce8c23d99f7f144a82", "tree": "3781e227988b4d986bf98dcc0390df17c6fe8f10", "parents": [ "45a68628d37222e655219febce9e91b6484789b2" ], "author": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Wed Mar 23 16:43:13 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Mar 23 19:46:58 2011 -0700" }, "message": "pidns: call pid_ns_prepare_proc() from create_pid_namespace()\n\nReorganize proc_get_sb() so it can be called before the struct pid of the\nfirst process is allocated.\n\nSigned-off-by: Eric W. Biederman \u003cebiederm@xmission.com\u003e\nSigned-off-by: Daniel Lezcano \u003cdaniel.lezcano@free.fr\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nAcked-by: Serge E. Hallyn \u003cserge@hallyn.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5883f57ca0008ffc93e09cbb9847a1928e50c6f3", "tree": "f7559549b81f1648b089ddfaa202644bf353b3b0", "parents": [ "312ec7e50c4d3f40b3762af651d1aa79a67f556a" ], "author": { "name": "Kees Cook", "email": "kees.cook@canonical.com", "time": "Wed Mar 23 16:42:53 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Mar 23 19:46:37 2011 -0700" }, "message": "proc: protect mm start_code/end_code in /proc/pid/stat\n\nWhile mm-\u003estart_stack was protected from cross-uid viewing (commit\nf83ce3e6b02d5 (\"proc: avoid information leaks to non-privileged\nprocesses\")), the start_code and end_code values were not. This would\nallow the text location of a PIE binary to leak, defeating ASLR.\n\nNote that the value \"1\" is used instead of \"0\" for a protected value since\n\"ps\", \"killall\", and likely other readers of /proc/pid/stat, take\nstart_code of \"0\" to mean a kernel thread and will misbehave. Thanks to\nBrad Spengler for pointing this out.\n\nAddresses CVE-2011-0726\n\nSigned-off-by: Kees Cook \u003ckees.cook@canonical.com\u003e\nCc: \u003cstable@kernel.org\u003e\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: Eugene Teo \u003ceugeneteo@kernel.sg\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Brad Spengler \u003cspender@grsecurity.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "312ec7e50c4d3f40b3762af651d1aa79a67f556a", "tree": "98112d9c80aacd011e313268b5f5d8caf5b5b727", "parents": [ "fc3d8767b2b6de955579852d7a150f1734265eaf" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Wed Mar 23 16:42:52 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Mar 23 19:46:37 2011 -0700" }, "message": "proc: make struct proc_dir_entry::namelen unsigned int\n\n1. namelen is declared \"unsigned short\" which hints for \"maybe space savings\".\n Indeed in 2.4 struct proc_dir_entry looked like:\n\n struct proc_dir_entry {\n unsigned short low_ino;\n unsigned short namelen;\n\n Now, low_ino is \"unsigned int\", all savings were gone for a long time.\n \"struct proc_dir_entry\" is not that countless to worry about it\u0027s size,\n anyway.\n\n2. converting from unsigned short to int/unsigned int can only create\n problems, we better play it safe.\n\nSpace is not really conserved, because of natural alignment for the next\nfield. sizeof(struct proc_dir_entry) remains the same.\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": "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": "0db0c01b53a1a421513f91573241aabafb87802a", "tree": "beb48c1fe733509945d6cfda2f830ebe3104aa02", "parents": [ "51e031496d50f87ff519a63cfd4fc2f415f03336" ], "author": { "name": "Aaro Koskinen", "email": "aaro.koskinen@nokia.com", "time": "Wed Mar 23 16:42:50 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Mar 23 19:46:36 2011 -0700" }, "message": "procfs: fix /proc/\u003cpid\u003e/maps heap check\n\nThe current code fails to print the \"[heap]\" marking if the heap is split\ninto multiple mappings.\n\nFix the check so that the marking is displayed in all possible cases:\n\t1. vma matches exactly the heap\n\t2. the heap vma is merged e.g. with bss\n\t3. the heap vma is splitted e.g. due to locked pages\n\nTest cases. In all cases, the process should have mapping(s) with\n[heap] marking:\n\n\t(1) vma matches exactly the heap\n\n\t#include \u003cstdio.h\u003e\n\t#include \u003cunistd.h\u003e\n\t#include \u003csys/types.h\u003e\n\n\tint main (void)\n\t{\n\t\tif (sbrk(4096) !\u003d (void *)-1) {\n\t\t\tprintf(\"check /proc/%d/maps\\n\", (int)getpid());\n\t\t\twhile (1)\n\t\t\t\tsleep(1);\n\t\t}\n\t\treturn 0;\n\t}\n\n\t# ./test1\n\tcheck /proc/553/maps\n\t[1] + Stopped ./test1\n\t# cat /proc/553/maps | head -4\n\t00008000-00009000 r-xp 00000000 01:00 3113640 /test1\n\t00010000-00011000 rw-p 00000000 01:00 3113640 /test1\n\t00011000-00012000 rw-p 00000000 00:00 0 [heap]\n\t4006f000-40070000 rw-p 00000000 00:00 0\n\n\t(2) the heap vma is merged\n\n\t#include \u003cstdio.h\u003e\n\t#include \u003cunistd.h\u003e\n\t#include \u003csys/types.h\u003e\n\n\tchar foo[4096] \u003d \"foo\";\n\tchar bar[4096];\n\n\tint main (void)\n\t{\n\t\tif (sbrk(4096) !\u003d (void *)-1) {\n\t\t\tprintf(\"check /proc/%d/maps\\n\", (int)getpid());\n\t\t\twhile (1)\n\t\t\t\tsleep(1);\n\t\t}\n\t\treturn 0;\n\t}\n\n\t# ./test2\n\tcheck /proc/556/maps\n\t[2] + Stopped ./test2\n\t# cat /proc/556/maps | head -4\n\t00008000-00009000 r-xp 00000000 01:00 3116312 /test2\n\t00010000-00012000 rw-p 00000000 01:00 3116312 /test2\n\t00012000-00014000 rw-p 00000000 00:00 0 [heap]\n\t4004a000-4004b000 rw-p 00000000 00:00 0\n\n\t(3) the heap vma is splitted (this fails without the patch)\n\n\t#include \u003cstdio.h\u003e\n\t#include \u003cunistd.h\u003e\n\t#include \u003csys/mman.h\u003e\n\t#include \u003csys/types.h\u003e\n\n\tint main (void)\n\t{\n\t\tif ((sbrk(4096) !\u003d (void *)-1) \u0026\u0026 !mlockall(MCL_FUTURE) \u0026\u0026\n\t\t (sbrk(4096) !\u003d (void *)-1)) {\n\t\t\tprintf(\"check /proc/%d/maps\\n\", (int)getpid());\n\t\t\twhile (1)\n\t\t\t\tsleep(1);\n\t\t}\n\t\treturn 0;\n\t}\n\n\t# ./test3\n\tcheck /proc/559/maps\n\t[1] + Stopped ./test3\n\t# cat /proc/559/maps|head -4\n\t00008000-00009000 r-xp 00000000 01:00 3119108 /test3\n\t00010000-00011000 rw-p 00000000 01:00 3119108 /test3\n\t00011000-00012000 rw-p 00000000 00:00 0 [heap]\n\t00012000-00013000 rw-p 00000000 00:00 0 [heap]\n\nIt looks like the bug has been there forever, and since it only results in\nsome information missing from a procfile, it does not fulfil the -stable\n\"critical issue\" criteria.\n\nSigned-off-by: Aaro Koskinen \u003caaro.koskinen@nokia.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": "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": "31db58b3ab432f72ea76be58b12e6ffaf627d5db", "tree": "c88b742e1f2c52045d5abc6d35d7492ebdf64541", "parents": [ "375906f8765e131a4a159b1ffebf78c15db7b3bf" ], "author": { "name": "Stephen Wilson", "email": "wilsons@start.ca", "time": "Sun Mar 13 15:49:15 2011 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Mar 23 16:36:54 2011 -0400" }, "message": "mm: arch: make get_gate_vma take an mm_struct instead of a task_struct\n\nMorally, the presence of a gate vma is more an attribute of a particular mm than\na particular task. Moreover, dropping the dependency on task_struct will help\nmake both existing and future operations on mm\u0027s more flexible and convenient.\n\nSigned-off-by: Stephen Wilson \u003cwilsons@start.ca\u003e\nReviewed-by: Michel Lespinasse \u003cwalken@google.com\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nCc: \"H. Peter Anvin\" \u003chpa@zytor.com\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": "4031a219d8913da40ade5a6e5b538cc61e975cc8", "tree": "ead7acfa743ef31f5be6dc9cae1fc70cefd72bf0", "parents": [ "22e057c5923e60debad318cbeaee33033b110bc8" ], "author": { "name": "Dave Hansen", "email": "dave@linux.vnet.ibm.com", "time": "Tue Mar 22 16:33:01 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Mar 22 17:44:04 2011 -0700" }, "message": "smaps: have smaps show transparent huge pages\n\nNow that the mere act of _looking_ at /proc/$pid/smaps will not destroy\ntransparent huge pages, tell how much of the VMA is actually mapped with\nthem.\n\nThis way, we can make sure that we\u0027re getting THPs where we\nexpect to see them.\n\nSigned-off-by: Dave Hansen \u003cdave@linux.vnet.ibm.com\u003e\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: David Rientjes \u003crientjes@google.com\u003e\nReviewed-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nTested-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nCc: Michael J Wolf \u003cmjwolf@us.ibm.com\u003e\nCc: Andrea Arcangeli \u003caarcange@redhat.com\u003e\nCc: Johannes Weiner \u003channes@cmpxchg.org\u003e\nCc: Matt Mackall \u003cmpm@selenic.com\u003e\nCc: Jeremy Fitzhardinge \u003cjeremy@goop.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "22e057c5923e60debad318cbeaee33033b110bc8", "tree": "7dd6d7b5ed93974263377cd458384b85b2847041", "parents": [ "3c9acc7849b1eab7ffc75e933404c5f32865d9a2" ], "author": { "name": "Dave Hansen", "email": "dave@linux.vnet.ibm.com", "time": "Tue Mar 22 16:33:00 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Mar 22 17:44:04 2011 -0700" }, "message": "smaps: teach smaps_pte_range() about THP pmds\n\nThis adds code to explicitly detect and handle pmd_trans_huge() pmds. It\nthen passes HPAGE_SIZE units in to the smap_pte_entry() function instead\nof PAGE_SIZE.\n\nThis means that using /proc/$pid/smaps now will no longer cause THPs to be\nbroken down in to small pages.\n\nSigned-off-by: Dave Hansen \u003cdave@linux.vnet.ibm.com\u003e\nReviewed-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nTested-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nAcked-by: Andrea Arcangeli \u003caarcange@redhat.com\u003e\nAcked-by: David Rientjes \u003crientjes@google.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Michael J Wolf \u003cmjwolf@us.ibm.com\u003e\nCc: Andrea Arcangeli \u003caarcange@redhat.com\u003e\nCc: Johannes Weiner \u003channes@cmpxchg.org\u003e\nCc: Matt Mackall \u003cmpm@selenic.com\u003e\nCc: Jeremy Fitzhardinge \u003cjeremy@goop.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3c9acc7849b1eab7ffc75e933404c5f32865d9a2", "tree": "7137eca693cd83bf89d30b354665ec9cf7b5f431", "parents": [ "ae11c4d9f646064cf086e2f8cd4b3c475df7739c" ], "author": { "name": "Dave Hansen", "email": "dave@linux.vnet.ibm.com", "time": "Tue Mar 22 16:32:59 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Mar 22 17:44:04 2011 -0700" }, "message": "smaps: pass pte size argument in to smaps_pte_entry()\n\nAdd an argument to the new smaps_pte_entry() function to let it account in\nthings other than PAGE_SIZE units. I changed all of the PAGE_SIZE sites,\neven though not all of them can be reached for transparent huge pages,\njust so this will continue to work without changes as THPs are improved.\n\nSigned-off-by: Dave Hansen \u003cdave@linux.vnet.ibm.com\u003e\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nAcked-by: David Rientjes \u003crientjes@google.com\u003e\nReviewed-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nTested-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nCc: Michael J Wolf \u003cmjwolf@us.ibm.com\u003e\nCc: Andrea Arcangeli \u003caarcange@redhat.com\u003e\nCc: Matt Mackall \u003cmpm@selenic.com\u003e\nCc: Jeremy Fitzhardinge \u003cjeremy@goop.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ae11c4d9f646064cf086e2f8cd4b3c475df7739c", "tree": "5c565c6250749daa757852a629b25815a6919476", "parents": [ "033193275b3ffcfe7f3fde7b569f3d207f6cd6a0" ], "author": { "name": "Dave Hansen", "email": "dave@linux.vnet.ibm.com", "time": "Tue Mar 22 16:32:58 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Mar 22 17:44:04 2011 -0700" }, "message": "smaps: break out smaps_pte_entry() from smaps_pte_range()\n\nWe will use smaps_pte_entry() in a moment to handle both small and\ntransparent large pages. But, we must break it out of smaps_pte_range()\nfirst.\n\nSigned-off-by: Dave Hansen \u003cdave@linux.vnet.ibm.com\u003e\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nAcked-by: David Rientjes \u003crientjes@google.com\u003e\nReviewed-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nTested-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nCc: Michael J Wolf \u003cmjwolf@us.ibm.com\u003e\nCc: Andrea Arcangeli \u003caarcange@redhat.com\u003e\nCc: Matt Mackall \u003cmpm@selenic.com\u003e\nCc: Jeremy Fitzhardinge \u003cjeremy@goop.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "033193275b3ffcfe7f3fde7b569f3d207f6cd6a0", "tree": "fc65fa02248f855f0f63e087f35a507b6abb5617", "parents": [ "278df9f451dc71dcd002246be48358a473504ad0" ], "author": { "name": "Dave Hansen", "email": "dave@linux.vnet.ibm.com", "time": "Tue Mar 22 16:32:56 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Mar 22 17:44:04 2011 -0700" }, "message": "pagewalk: only split huge pages when necessary\n\nRight now, if a mm_walk has either -\u003epte_entry or -\u003epmd_entry set, it will\nunconditionally split any transparent huge pages it runs in to. In\npractice, that means that anyone doing a\n\n\tcat /proc/$pid/smaps\n\nwill unconditionally break down every huge page in the process and depend\non khugepaged to re-collapse it later. This is fairly suboptimal.\n\nThis patch changes that behavior. It teaches each -\u003epmd_entry handler\n(there are five) that they must break down the THPs themselves. Also, the\n_generic_ code will never break down a THP unless a -\u003epte_entry handler is\nactually set.\n\nThis means that the -\u003epmd_entry handlers can now choose to deal with THPs\nwithout breaking them down.\n\n[akpm@linux-foundation.org: coding-style fixes]\nSigned-off-by: Dave Hansen \u003cdave@linux.vnet.ibm.com\u003e\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: David Rientjes \u003crientjes@google.com\u003e\nReviewed-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nTested-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nCc: Michael J Wolf \u003cmjwolf@us.ibm.com\u003e\nCc: Andrea Arcangeli \u003caarcange@redhat.com\u003e\nCc: Johannes Weiner \u003channes@cmpxchg.org\u003e\nCc: Matt Mackall \u003cmpm@selenic.com\u003e\nCc: Jeremy Fitzhardinge \u003cjeremy@goop.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a002951c97ff8da49938c982a4c236bf2fafdc9f", "tree": "d43e7885ea7376df0a47a0fc8ceca66dc5bfa357", "parents": [ "521cb40b0c44418a4fd36dc633f575813d59a43d", "c151694b2c48d956ac8c8c59c6927f89cc29ef70" ], "author": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Wed Mar 16 09:41:17 2011 +1100" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Wed Mar 16 09:41:17 2011 +1100" }, "message": "Merge branch \u0027next\u0027 into for-linus\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": "dfef6dcd35cb4a251f6322ca9b2c06f0bb1aa1f4", "tree": "65e8a25d4ed913658db35c4b97ab0a021c2124eb", "parents": [ "1858efd471624ecb37e6b5462cab8076f47d1cee" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Mar 08 01:25:28 2011 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Mar 08 02:22:27 2011 -0500" }, "message": "unfuck proc_sysctl -\u003ed_compare()\n\na) struct inode is not going to be freed under -\u003ed_compare();\nhowever, the thing PROC_I(inode)-\u003esysctl points to just might.\nFortunately, it\u0027s enough to make freeing that sucker delayed,\nprovided that we don\u0027t step on its -\u003eunregistering, clear\nthe pointer to it in PROC_I(inode) before dropping the reference\nand check if it\u0027s NULL in -\u003ed_compare().\n\nb) I\u0027m not sure that we *can* walk into NULL inode here (we recheck\ndentry-\u003eseq between verifying that it\u0027s still hashed / fetching\ndentry-\u003ed_inode and passing it to -\u003ed_compare() and there\u0027s no\nnegative hashed dentries in /proc/sys/*), but if we can walk into\nthat, we really should not have -\u003ed_compare() return 0 on it!\nSaid that, I really suspect that this check can be simply killed.\nNick?\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "fe3fa43039d47ee4e22caf460b79b62a14937f79", "tree": "9eab8d00f1227b9fe0959f32a62d892ed35803ba", "parents": [ "ee009e4a0d4555ed522a631bae9896399674f064", "026eb167ae77244458fa4b4b9fc171209c079ba7" ], "author": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Tue Mar 08 11:38:10 2011 +1100" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Tue Mar 08 11:38:10 2011 +1100" }, "message": "Merge branch \u0027master\u0027 of git://git.infradead.org/users/eparis/selinux into next\n" }, { "commit": "8aaccf7fa2a2f148db1edbe7b09e3119c3f910cf", "tree": "745b2a06ae4b30eae93ee87efc2621962dafb0e5", "parents": [ "337fc720d85b98a71b1ff6e3a5449a24a7c33cfe" ], "author": { "name": "Paul Bolle", "email": "pebolle@tiscali.nl", "time": "Mon Feb 14 22:34:22 2011 +0100" }, "committer": { "name": "Grant Likely", "email": "grant.likely@secretlab.ca", "time": "Wed Mar 02 13:45:18 2011 -0700" }, "message": "of/flattree: Drop an uninteresting message to pr_debug level\n\nThis message looks like an error (which it isn\u0027t) when booting with a\nflattened device tree. Remove the message from normal kernel builds.\n\nSigned-off-by: Paul Bolle \u003cpebolle@tiscali.nl\u003e\nSigned-off-by: Grant Likely \u003cgrant.likely@secretlab.ca\u003e\n" }, { "commit": "261cd298a8c363d7985e3482946edb4bfedacf98", "tree": "2b0335444f995b406ea4b9f31bc8eaffaed2e807", "parents": [ "1abe3af27120a66711e00eb3112ecd4f8292a470" ], "author": { "name": "Martin Schwidefsky", "email": "schwidefsky@de.ibm.com", "time": "Tue Feb 15 09:43:32 2011 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Feb 15 07:34:16 2011 -0800" }, "message": "s390: remove task_show_regs\n\ntask_show_regs used to be a debugging aid in the early bringup days\nof Linux on s390. /proc/\u003cpid\u003e/status is a world readable file, it\nis not a good idea to show the registers of a process. The only\ncorrect fix is to remove task_show_regs.\n\nReported-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8e6c96935fcc1ed3dbebc96fddfef3f2f2395afc", "tree": "c26297c8ca479972010cadf2058aacd63ce1744f", "parents": [ "652bb9b0d6ce007f37c098947b2cc0c45efa3f66" ], "author": { "name": "Lucian Adrian Grijincu", "email": "lucian.grijincu@gmail.com", "time": "Tue Feb 01 18:42:22 2011 +0200" }, "committer": { "name": "Eric Paris", "email": "eparis@redhat.com", "time": "Tue Feb 01 11:53:54 2011 -0500" }, "message": "security/selinux: fix /proc/sys/ labeling\n\nThis fixes an old (2007) selinux regression: filesystem labeling for\n/proc/sys returned\n -r--r--r-- unknown /proc/sys/fs/file-nr\ninstead of\n -r--r--r-- system_u:object_r:sysctl_fs_t:s0 /proc/sys/fs/file-nr\n\nEvents that lead to breaking of /proc/sys/ selinux labeling:\n\n1) sysctl was reimplemented to route all calls through /proc/sys/\n\n commit 77b14db502cb85a031fe8fde6c85d52f3e0acb63\n [PATCH] sysctl: reimplement the sysctl proc support\n\n2) proc_dir_entry was removed from ctl_table:\n\n commit 3fbfa98112fc3962c416452a0baf2214381030e6\n [PATCH] sysctl: remove the proc_dir_entry member for the sysctl tables\n\n3) selinux still walked the proc_dir_entry tree to apply\n labeling. Because ctl_tables don\u0027t have a proc_dir_entry, we did\n not label /proc/sys/ inodes any more. To achieve this the /proc/sys/\n inodes were marked private and private inodes were ignored by\n selinux.\n\n commit bbaca6c2e7ef0f663bc31be4dad7cf530f6c4962\n [PATCH] selinux: enhance selinux to always ignore private inodes\n\n commit 86a71dbd3e81e8870d0f0e56b87875f57e58222b\n [PATCH] sysctl: hide the sysctl proc inodes from selinux\n\nAccess control checks have been done by means of a special sysctl hook\nthat was called for read/write accesses to any /proc/sys/ entry.\n\nWe don\u0027t have to do this because, instead of walking the\nproc_dir_entry tree we can walk the dentry tree (as done in this\npatch). With this patch:\n* we don\u0027t mark /proc/sys/ inodes as private\n* we don\u0027t need the sysclt security hook\n* we walk the dentry tree to find the path to the inode.\n\nWe have to strip the PID in /proc/PID/ entries that have a\nproc_dir_entry because selinux does not know how to label paths like\n\u0027/1/net/rpc/nfsd.fh\u0027 (and defaults to \u0027proc_t\u0027 labeling). Selinux does\nknow of \u0027/net/rpc/nfsd.fh\u0027 (and applies the \u0027sysctl_rpc_t\u0027 label).\n\nPID stripping from the path was done implicitly in the previous code\nbecause the proc_dir_entry tree had the root in \u0027/net\u0027 in the example\nfrom above. The dentry tree has the root in \u0027/1\u0027.\n\nSigned-off-by: Eric W. Biederman \u003cebiederm@xmission.com\u003e\nSigned-off-by: Lucian Adrian Grijincu \u003clucian.grijincu@gmail.com\u003e\nSigned-off-by: Eric Paris \u003ceparis@redhat.com\u003e\n" }, { "commit": "ac751efa6a0d70f2c9daef5c7e3a92270f5c2dff", "tree": "e2d3f799e20e2cbca80891ea17af7484f21d628f", "parents": [ "3689456b4bd36027022b3215eb2acba51cd0e6b5" ], "author": { "name": "Torben Hohn", "email": "torbenh@gmx.de", "time": "Tue Jan 25 15:07:35 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Jan 26 10:50:06 2011 +1000" }, "message": "console: rename acquire/release_console_sem() to console_lock/unlock()\n\nThe -rt patches change the console_semaphore to console_mutex. As a\nresult, a quite large chunk of the patches changes all\nacquire/release_console_sem() to acquire/release_console_mutex()\n\nThis commit makes things use more neutral function names which dont make\nimplications about the underlying lock.\n\nThe only real change is the return value of console_trylock which is\ninverted from try_acquire_console_sem()\n\nThis patch also paves the way to switching console_sem from a semaphore to\na mutex.\n\n[akpm@linux-foundation.org: coding-style fixes]\n[akpm@linux-foundation.org: make console_trylock return 1 on success, per Geert]\nSigned-off-by: Torben Hohn \u003ctorbenh@gmx.de\u003e\nCc: Thomas Gleixner \u003ctglx@tglx.de\u003e\nCc: Greg KH \u003cgregkh@suse.de\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Geert Uytterhoeven \u003cgeert@linux-m68k.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6a108a14fa356ef607be308b68337939e56ea94e", "tree": "1bf260572bd8f95ed867307a2bcf5d881c8ae4a6", "parents": [ "12fcdba1b7ae8b25696433f420b775aeb556d89b" ], "author": { "name": "David Rientjes", "email": "rientjes@google.com", "time": "Thu Jan 20 14:44:16 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 20 17:02:05 2011 -0800" }, "message": "kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT\n\nThe meaning of CONFIG_EMBEDDED has long since been obsoleted; the option\nis used to configure any non-standard kernel with a much larger scope than\nonly small devices.\n\nThis patch renames the option to CONFIG_EXPERT in init/Kconfig and fixes\nreferences to the option throughout the kernel. A new CONFIG_EMBEDDED\noption is added that automatically selects CONFIG_EXPERT when enabled and\ncan be used in the future to isolate options that should only be\nconsidered for embedded systems (RISC architectures, SLOB, etc).\n\nCalling the option \"EXPERT\" more accurately represents its intention: only\nexpert users who understand the impact of the configuration changes they\nare making should enable it.\n\nReviewed-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nAcked-by: David Woodhouse \u003cdavid.woodhouse@intel.com\u003e\nSigned-off-by: David Rientjes \u003crientjes@google.com\u003e\nCc: Greg KH \u003cgregkh@suse.de\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nCc: Jens Axboe \u003caxboe@kernel.dk\u003e\nCc: Arnd Bergmann \u003carnd@arndb.de\u003e\nCc: Robin Holt \u003cholt@sgi.com\u003e\nCc: \u003clinux-arch@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": "5f24ce5fd34c3ca1b3d10d30da754732da64d5c0", "tree": "c82d27461f2adda210e77808b7dd04eaec017f2f", "parents": [ "21ae5b01750f14140809508a478a4413792e0261" ], "author": { "name": "Andrea Arcangeli", "email": "aarcange@redhat.com", "time": "Thu Jan 13 15:47:00 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 13 17:32:43 2011 -0800" }, "message": "thp: remove PG_buddy\n\nPG_buddy can be converted to _mapcount \u003d\u003d -2. So the PG_compound_lock can\nbe added to page-\u003eflags without overflowing (because of the sparse section\nbits increasing) with CONFIG_X86_PAE\u003dy and CONFIG_X86_PAT\u003dy. This also\nhas to move the memory hotplug code from _mapcount to lru.next to avoid\nany risk of clashes. We can\u0027t use lru.next for PG_buddy removal, but\nmemory hotplug can use lru.next even more easily than the mapcount\ninstead.\n\nSigned-off-by: Andrea Arcangeli \u003caarcange@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": "79134171df238171daa4c024a42b77b401ccb00b", "tree": "af7872d5851e371d09b9fe7eb80f4809713c79fb", "parents": [ "b9bbfbe30ae088cc88a4b2ba7732baeebd1a0162" ], "author": { "name": "Andrea Arcangeli", "email": "aarcange@redhat.com", "time": "Thu Jan 13 15:46:58 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 13 17:32:43 2011 -0800" }, "message": "thp: transparent hugepage vmstat\n\nAdd hugepage stat information to /proc/vmstat and /proc/meminfo.\n\nSigned-off-by: Andrea Arcangeli \u003caarcange@redhat.com\u003e\nAcked-by: 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": "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": "2d90508f638241a2e7422d884767398296ebe720", "tree": "5b80c4919d924ab76c02b629465cbc7820010a53", "parents": [ "62c70bce8ac236514c610020bb1ae5b8bde965cb" ], "author": { "name": "Nikanth Karthikesan", "email": "knikanth@suse.de", "time": "Thu Jan 13 15:45:53 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 13 17:32:33 2011 -0800" }, "message": "mm: smaps: export mlock information\n\nCurrently there is no way to find whether a process has locked its pages\nin memory or not. And which of the memory regions are locked in memory.\n\nAdd a new field \"Locked\" to export this information via the smaps file.\n\nSigned-off-by: Nikanth Karthikesan \u003cknikanth@suse.de\u003e\nAcked-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nAcked-by: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\nCc: Matt Mackall \u003cmpm@selenic.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ceff1a770933e2ca2bf995b453dade4ec47a9878", "tree": "7c132b0a68a76fc27c5e1e12fef17f208ce924b8", "parents": [ "bf33cbdf8acccf96de268fbfb347d94e72de81ef" ], "author": { "name": "Dave Anderson", "email": "anderson@redhat.com", "time": "Wed Jan 12 17:00:36 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 13 08:03:17 2011 -0800" }, "message": "/proc/kcore: fix seeking\n\nCommit 34aacb2920 (\"procfs: Use generic_file_llseek in /proc/kcore\") broke\nseeking on /proc/kcore. This changes it back to use default_llseek in\norder to restore the original behavior.\n\nThe problem with generic_file_llseek is that it only allows seeks up to\ninode-\u003ei_sb-\u003es_maxbytes, which is 2GB-1 on procfs, where the memory file\noffset values in the /proc/kcore PT_LOAD segments may exceed or start\nbeyond that offset value.\n\nA similar revert was made for /proc/vmcore.\n\nSigned-off-by: Dave Anderson \u003canderson@redhat.com\u003e\nAcked-by: Frederic Weisbecker \u003cfweisbec@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": "bf33cbdf8acccf96de268fbfb347d94e72de81ef", "tree": "cc859c9a4f5f38a8452abfe1a79af13900e35421", "parents": [ "3740a20c4fe8697cb604a7d51395d23472b1768f" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Wed Jan 12 17:00:36 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 13 08:03:17 2011 -0800" }, "message": "proc: move proc_console.c to fs/proc/consoles.c\n\nFilename is supposed to match procfile name for random junk.\n\nAdd __init while I\u0027m at it.\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": "3740a20c4fe8697cb604a7d51395d23472b1768f", "tree": "dac4b07e654742bc60fad44c55327d8b3f86e4b3", "parents": [ "a6fc86d2b43bf1086557f023a24adf91db915559" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Wed Jan 12 17:00:35 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 13 08:03:17 2011 -0800" }, "message": "proc: less LOCK/UNLOCK in remove_proc_entry()\n\nFor the common case where a proc entry is being removed and nobody is in\nthe process of using it, save a LOCK/UNLOCK pair.\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": "a6fc86d2b43bf1086557f023a24adf91db915559", "tree": "4ad1a6f004d50c21bdce5b14d8f78fef3f453670", "parents": [ "c6a340584607f653e10549c76dd427d4780c8f2c" ], "author": { "name": "Petr Holasek", "email": "pholasek@redhat.com", "time": "Wed Jan 12 17:00:34 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 13 08:03:17 2011 -0800" }, "message": "kpagecount: add slab page checking because _mapcount is in a union\n\nAdd a PageSlab() check before adding the _mapcount value to /kpagecount.\npage-\u003e_mapcount is in a union with the SLAB structure so for pages\ncontrolled by SLAB, page_mapcount() returns nonsense.\n\nSigned-off-by: Petr Holasek \u003cpholasek@redhat.com\u003e\nCc: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\nCc: Matt Mackall \u003cmpm@selenic.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": "6d1b6e4eff89475785f60fa00f65da780f869f36", "tree": "41608a81f14b824c97b8d8f0849aff04bcf1f537", "parents": [ "9d6de12f70d2fb1487c4f482a21fed25fe74e0fd" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Wed Jan 12 17:00:33 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 13 08:03:16 2011 -0800" }, "message": "proc: -\u003elow_ino cleanup\n\n- -\u003elow_ino is write-once field -- reading it under locks is unnecessary.\n\n- /proc/$PID stuff never reaches pde_put()/free_proc_entry() --\n PROC_DYNAMIC_FIRST check never triggers.\n\n- in proc_get_inode(), inode number always matches proc dir entry, so\n save one parameter.\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": "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": "a2ade7b6ca37c808128810687cd56e8a44443e65", "tree": "d7ffb1be14e69f4ba22ca425c21369d4dd3a3032", "parents": [ "34e49d4f635d6a800c4089c40fd254e12e451449" ], "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 unsigned long inside /proc/*/statm\n\n/proc/*/statm code needlessly truncates data from unsigned long to int.\nOne needs only 8+ TB of RAM to make truncation visible.\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nReviewed-by: WANG Cong \u003cxiyou.wangcong@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": "56b85f32d530d09d6805488ad00775d4e0e3baab", "tree": "e7fbe69e338ef775d3b2dd822aa915d259b4bc94", "parents": [ "3e5b08cbbf78bedd316904ab0cf3b27119433ee5", "568389c257fa7d74ce36c2f78bad31965fded4cf" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 14:39:20 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 07 14:39:20 2011 -0800" }, "message": "Merge branch \u0027tty-next\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6\n\n* \u0027tty-next\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6: (36 commits)\n serial: apbuart: Fixup apbuart_console_init()\n TTY: Add tty ioctl to figure device node of the system console.\n tty: add \u0027active\u0027 sysfs attribute to tty0 and console device\n drivers: serial: apbuart: Handle OF failures gracefully\n Serial: Avoid unbalanced IRQ wake disable during resume\n tty: fix typos/errors in tty_driver.h comments\n pch_uart : fix warnings for 64bit compile\n 8250: fix uninitialized FIFOs\n ip2: fix compiler warning on ip2main_pci_tbl\n specialix: fix compiler warning on specialix_pci_tbl\n rocket: fix compiler warning on rocket_pci_ids\n 8250: add a UPIO_DWAPB32 for 32 bit accesses\n 8250: use container_of() instead of casting\n serial: omap-serial: Add support for kernel debugger\n serial: fix pch_uart kconfig \u0026 build\n drivers: char: hvc: add arm JTAG DCC console support\n RS485 documentation: add 16C950 UART description\n serial: ifx6x60: fix memory leak\n serial: ifx6x60: free IRQ on error\n Serial: EG20T: add PCH_UART driver\n ...\n\nFixed up conflicts in drivers/serial/apbuart.c with evil merge that\nmakes the code look fairly sane (unlike either side).\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": "31e6b01f4183ff419a6d1f86177cbf4662347cec", "tree": "e215ec9af88352c55e024f784f3d9f8eb13fab85", "parents": [ "3c22cd5709e8143444a6d08682a87f4c57902df3" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:52 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:27 2011 +1100" }, "message": "fs: rcu-walk for path lookup\n\nPerform common cases of path lookups without any stores or locking in the\nancestor dentry elements. This is called rcu-walk, as opposed to the current\nalgorithm which is a refcount based walk, or ref-walk.\n\nThis results in far fewer atomic operations on every path element,\nsignificantly improving path lookup performance. It also avoids cacheline\nbouncing on common dentries, significantly improving scalability.\n\nThe overall design is like this:\n* LOOKUP_RCU is set in nd-\u003eflags, which distinguishes rcu-walk from ref-walk.\n* Take the RCU lock for the entire path walk, starting with the acquiring\n of the starting path (eg. root/cwd/fd-path). So now dentry refcounts are\n not required for dentry persistence.\n* synchronize_rcu is called when unregistering a filesystem, so we can\n access d_ops and i_ops during rcu-walk.\n* Similarly take the vfsmount lock for the entire path walk. So now mnt\n refcounts are not required for persistence. Also we are free to perform mount\n lookups, and to assume dentry mount points and mount roots are stable up and\n down the path.\n* Have a per-dentry seqlock to protect the dentry name, parent, and inode,\n so we can load this tuple atomically, and also check whether any of its\n members have changed.\n* Dentry lookups (based on parent, candidate string tuple) recheck the parent\n sequence after the child is found in case anything changed in the parent\n during the path walk.\n* inode is also RCU protected so we can load d_inode and use the inode for\n limited things.\n* i_mode, i_uid, i_gid can be tested for exec permissions during path walk.\n* i_op can be loaded.\n\nWhen we reach the destination dentry, we lock it, recheck lookup sequence,\nand increment its refcount and mountpoint refcount. RCU and vfsmount locks\nare dropped. This is termed \"dropping rcu-walk\". If the dentry refcount does\nnot match, we can not drop rcu-walk gracefully at the current point in the\nlokup, so instead return -ECHILD (for want of a better errno). This signals the\npath walking code to re-do the entire lookup with a ref-walk.\n\nAside from the final dentry, there are other situations that may be encounted\nwhere we cannot continue rcu-walk. In that case, we drop rcu-walk (ie. take\na reference on the last good dentry) and continue with a ref-walk. Again, if\nwe can drop rcu-walk gracefully, we return -ECHILD and do the whole lookup\nusing ref-walk. But it is very important that we can continue with ref-walk\nfor most cases, particularly to avoid the overhead of double lookups, and to\ngain the scalability advantages on common path elements (like cwd and root).\n\nThe cases where rcu-walk cannot continue are:\n* NULL dentry (ie. any uncached path element)\n* parent with d_inode-\u003ei_op-\u003epermission or ACLs\n* dentries with d_revalidate\n* Following links\n\nIn future patches, permission checks and d_revalidate become rcu-walk aware. It\nmay be possible eventually to make following links rcu-walk aware.\n\nUncached path elements will always require dropping to ref-walk mode, at the\nvery least because i_mutex needs to be grabbed, and objects allocated.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "fa0d7e3de6d6fc5004ad9dea0dd6b286af8f03e9", "tree": "203e0f73883e4c26b5597e36042386a1237dab35", "parents": [ "77812a1ef139d84270d27faacc0630c887411013" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:49 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:26 2011 +1100" }, "message": "fs: icache RCU free inodes\n\nRCU free the struct inode. This will allow:\n\n- Subsequent store-free path walking patch. The inode must be consulted for\n permissions when walking, so an RCU inode reference is a must.\n- sb_inode_list_lock to be moved inside i_lock because sb list walkers who want\n to take i_lock no longer need to take sb_inode_list_lock to walk the list in\n the first place. This will simplify and optimize locking.\n- Could remove some nested trylock loops in dcache code\n- Could potentially simplify things a bit in VM land. Do not need to take the\n page lock to follow page-\u003emapping.\n\nThe downsides of this is the performance cost of using RCU. In a simple\ncreat/unlink microbenchmark, performance drops by about 10% due to inability to\nreuse cache-hot slab objects. As iterations increase and RCU freeing starts\nkicking over, this increases to about 20%.\n\nIn cases where inode lifetimes are longer (ie. many inodes may be allocated\nduring the average life span of a single inode), a lot of this cache reuse is\nnot applicable, so the regression caused by this patch is smaller.\n\nThe cache-hot regression could largely be avoided by using SLAB_DESTROY_BY_RCU,\nhowever this adds some complexity to list walking and store-free path walking,\nso I prefer to implement this at a later date, if it is shown to be a win in\nreal situations. I haven\u0027t found a regression in any non-micro benchmark so I\ndoubt it will be a problem.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n" }, { "commit": "621e155a3591962420eacdd39f6f0aa29ceb221e", "tree": "387a9fb396f1bf24514b712c294182e36ba51076", "parents": [ "fb2d5b86aff355a27ebfc132d3c99f4a940cc3fe" ], "author": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:49:27 2011 +1100" }, "committer": { "name": "Nick Piggin", "email": "npiggin@kernel.dk", "time": "Fri Jan 07 17:50:19 2011 +1100" }, "message": "fs: change d_compare for rcu-walk\n\nChange d_compare so it may be called from lock-free RCU lookups. This\ndoes put significant restrictions on what may be done from the callback,\nhowever there don\u0027t seem to have been any problems with in-tree fses.\nIf some strange use case pops up that _really_ cannot cope with the\nrcu-walk rules, we can just add new rcu-unaware callbacks, which would\ncause name lookup to drop out of rcu-walk mode.\n\nFor in-tree filesystems, this is just a mechanical change.\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": "3c0cb7c31c206aaedb967e44b98442bbeb17a6c4", "tree": "3ecba45d7ffae4fba4a5aafaef4af5b0b1105bde", "parents": [ "f70f5b9dc74ca7d0a64c4ead3fb28da09dc1b234", "404a02cbd2ae8bf256a2fa1169bdfe86bb5ebb34" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 06 16:50:35 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 06 16:50:35 2011 -0800" }, "message": "Merge branch \u0027devel\u0027 of master.kernel.org:/home/rmk/linux-2.6-arm\n\n* \u0027devel\u0027 of master.kernel.org:/home/rmk/linux-2.6-arm: (416 commits)\n ARM: DMA: add support for DMA debugging\n ARM: PL011: add DMA burst threshold support for ST variants\n ARM: PL011: Add support for transmit DMA\n ARM: PL011: Ensure IRQs are disabled in UART interrupt handler\n ARM: PL011: Separate hardware FIFO size from TTY FIFO size\n ARM: PL011: Allow better handling of vendor data\n ARM: PL011: Ensure error flags are clear at startup\n ARM: PL011: include revision number in boot-time port printk\n ARM: vexpress: add sched_clock() for Versatile Express\n ARM i.MX53: Make MX53 EVK bootable\n ARM i.MX53: Some bug fix about MX53 MSL code\n ARM: 6607/1: sa1100: Update platform device registration\n ARM: 6606/1: sa1100: Fix platform device registration\n ARM i.MX51: rename IPU irqs\n ARM i.MX51: Add ipu clock support\n ARM: imx/mx27_3ds: Add PMIC support\n ARM: DMA: Replace page_to_dma()/dma_to_page() with pfn_to_dma()/dma_to_pfn()\n mx51: fix usb clock support\n MX51: Add support for usb host 2\n arch/arm/plat-mxc/ehci.c: fix errors/typos\n ...\n" }, { "commit": "31edf274f9aff1ccd39934a0b2fce38f4405c656", "tree": "fdc7bc445307ccb9648ca1a71375947c8ed59722", "parents": [ "3c0eee3fe6a3a1c745379547c7e7c904aa64f6d5", "ed60453fa8f8fc3d034dfdf10371a99cc6905626", "ac61d143ffe2a6db4d4bcf47c21a5159d6a1b644", "28257f7fdee0facc3b7f934e82c2485f27120d41", "b23065313297e750edd57ab6edfd36224826724e", "50005a8deb38e5e6456ebd94e57adb321d4589de", "cf562b4a550b3cd9d602a05bc27aaaaa376947b4", "3d09fbcd26851ffb2c40cec411b8e56db02520d1", "8a9618f5dfca35edb0d7ab6374ff586e2e9e989b" ], "author": { "name": "Russell King", "email": "rmk+kernel@arm.linux.org.uk", "time": "Wed Jan 05 18:08:10 2011 +0000" }, "committer": { "name": "Russell King", "email": "rmk+kernel@arm.linux.org.uk", "time": "Wed Jan 05 18:08:10 2011 +0000" }, "message": "Merge branches \u0027ftrace\u0027, \u0027gic\u0027, \u0027io\u0027, \u0027kexec\u0027, \u0027mod\u0027, \u0027sa11x0\u0027, \u0027sh\u0027 and \u0027versatile\u0027 into devel\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": "9833c39400c3e6ee19daeded6910df648741611e", "tree": "49fde990e2f08c5751f9f6923d32812580f87ff2", "parents": [ "e8a7e48bb248a1196484d3f8afa53bded2b24e71" ], "author": { "name": "Mika Westerberg", "email": "mika.westerberg@iki.fi", "time": "Fri Nov 19 09:29:24 2010 +0100" }, "committer": { "name": "Russell King", "email": "rmk+kernel@arm.linux.org.uk", "time": "Tue Nov 30 13:39:55 2010 +0000" }, "message": "ARM: 6485/5: proc/vmcore - allow archs to override vmcore_elf_check_arch()\n\nAllow architectures to redefine this macro if needed. This is useful for\nexample in architectures where 64-bit ELF vmcores are not supported.\nSpecifying zero vmcore_elf64_check_arch() allows compiler to optimize\naway unnecessary parts of parse_crash_elf64_headers().\n\nWe also rename the macro to vmcore_elf64_check_arch() to reflect that it\nis used for 64-bit vmcores only.\n\nSigned-off-by: Mika Westerberg \u003cmika.westerberg@iki.fi\u003e\nSigned-off-by: Russell King \u003crmk+kernel@arm.linux.org.uk\u003e\n" }, { "commit": "ea251c1d5c481cda1cf6b0c9e4965f04a6cf2ffc", "tree": "989753f439461fb333432761b8bf39d408572c62", "parents": [ "5f0af70a25593a9d53b87bc8d31902fb7cc63e40" ], "author": { "name": "Naoya Horiguchi", "email": "n-horiguchi@ah.jp.nec.com", "time": "Wed Nov 24 12:57:13 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Nov 25 06:50:46 2010 +0900" }, "message": "pagemap: set pagemap walk limit to PMD boundary\n\nCurrently one pagemap_read() call walks in PAGEMAP_WALK_SIZE bytes (\u003d\u003d 512\npages.) But there is a corner case where walk_pmd_range() accidentally\nruns over a VMA associated with a hugetlbfs file.\n\nFor example, when a process has mappings to VMAs as shown below:\n\n # cat /proc/\u003cpid\u003e/maps\n ...\n 3a58f6d000-3a58f72000 rw-p 00000000 00:00 0\n 7fbd51853000-7fbd51855000 rw-p 00000000 00:00 0\n 7fbd5186c000-7fbd5186e000 rw-p 00000000 00:00 0\n 7fbd51a00000-7fbd51c00000 rw-s 00000000 00:12 8614 /hugepages/test\n\nthen pagemap_read() goes into walk_pmd_range() path and walks in the range\n0x7fbd51853000-0x7fbd51a53000, but the hugetlbfs VMA should be handled by\nwalk_hugetlb_range(). Otherwise PMD for the hugepage is considered bad\nand cleared, which causes undesirable results.\n\nThis patch fixes it by separating pagemap walk range into one PMD.\n\nSigned-off-by: Naoya Horiguchi \u003cn-horiguchi@ah.jp.nec.com\u003e\nCc: Jun\u0027ichi Nomura \u003cj-nomura@ce.jp.nec.com\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Matt Mackall \u003cmpm@selenic.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "451a3c24b0135bce54542009b5fde43846c7cf67", "tree": "f0fbbcc155aef2a1ffcb8aa593fe7a966d0e6900", "parents": [ "55f6561c6941713ab5ae9180525b026dd40b7d14" ], "author": { "name": "Arnd Bergmann", "email": "arnd@arndb.de", "time": "Wed Nov 17 16:26:55 2010 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Nov 17 08:59:32 2010 -0800" }, "message": "BKL: remove extraneous #include \u003csmp_lock.h\u003e\n\nThe big kernel lock has been removed from all these files at some point,\nleaving only the #include.\n\nRemove this too as a cleanup.\n\nSigned-off-by: Arnd Bergmann \u003carnd@arndb.de\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "23308ba54dcdb54481163bfb07dd8aeca76a7a2e", "tree": "3c96c14ee801188978dd2e2c3c84f9ed7535660e", "parents": [ "281e66057757ddf32ffe679a08f9634fa9f70a7a" ], "author": { "name": "Jiri Slaby", "email": "jslaby@suse.cz", "time": "Thu Nov 04 16:20:24 2010 +0100" }, "committer": { "name": "Greg Kroah-Hartman", "email": "gregkh@suse.de", "time": "Tue Nov 16 12:50:17 2010 -0800" }, "message": "console: add /proc/consoles\n\nIt allows users to see what consoles are currently known to the system\nand with what flags.\n\nIt is based on Werner\u0027s patch, the part about traversing fds was\nremoved, the code was moved to kernel/printk.c, where consoles are\nhandled and it makes more sense to me.\n\nSigned-off-by: Jiri Slaby \u003cjslaby@suse.cz\u003e [cleanups]\nSigned-off-by: \"Dr. Werner Fink\" \u003cwerner@suse.de\u003e\nCc: Al Viro \u003cviro@ZenIV.linux.org.uk\u003e\nCc: Greg Kroah-Hartman \u003cgregkh@suse.de\u003e\nSigned-off-by: Greg Kroah-Hartman \u003cgregkh@suse.de\u003e\n" }, { "commit": "aed1d84f98738bcc1c605e1ff442de9890441315", "tree": "30fd177f50289b5daa621c0e2922b9942bdff0f5", "parents": [ "579441a39bbbbc408acd5b228d63e76cff708fe6" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Jul 26 13:12:54 2010 +0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Oct 29 04:17:01 2010 -0400" }, "message": "switch procfs to -\u003emount()\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "579441a39bbbbc408acd5b228d63e76cff708fe6", "tree": "01798eac955db70fd7f08d98e7563c261fec32a3", "parents": [ "d753ed975953a4e97a356bcd59ff146919f29235" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Jul 26 13:09:36 2010 +0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Oct 29 04:16:58 2010 -0400" }, "message": "setting -\u003eproc_mnt doesn\u0027t belong in proc_get_sb()\n\ntake that to kern_mount_data()-using callers\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "478735e38887077ac77a9756121b6ce0cb956e2f", "tree": "7b42110f71b1711f56cbbc0a01f00894b221337d", "parents": [ "f2c66cd8eeddedb440f33bc0f5cec1ed7ae376cb" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Wed Oct 27 15:34:15 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Oct 27 18:03:13 2010 -0700" }, "message": "/proc/stat: fix scalability of irq sum of all cpu\n\nIn /proc/stat, the number of per-IRQ event is shown by making a sum each\nirq\u0027s events on all cpus. But we can make use of kstat_irqs().\n\nkstat_irqs() do the same calculation, If !CONFIG_GENERIC_HARDIRQ,\nit\u0027s not a big cost. (Both of the number of cpus and irqs are small.)\n\nIf a system is very big and CONFIG_GENERIC_HARDIRQ, it does\n\n\tfor_each_irq()\n\t\tfor_each_cpu()\n\t\t\t- look up a radix tree\n\t\t\t- read desc-\u003eirq_stat[cpu]\nThis seems not efficient. This patch adds kstat_irqs() for\nCONFIG_GENRIC_HARDIRQ and change the calculation as\n\n\tfor_each_irq()\n\t\tlook up radix tree\n\t\tfor_each_cpu()\n\t\t\t- read desc-\u003eirq_stat[cpu]\n\nThis reduces cost.\n\nA test on (4096cpusp, 256 nodes, 4592 irqs) host (by Jack Steiner)\n\n%time cat /proc/stat \u003e /dev/null\n\nBefore Patch:\t 2.459 sec\nAfter Patch :\t .561 sec\n\n[akpm@linux-foundation.org: unexport kstat_irqs, coding-style tweaks]\n[akpm@linux-foundation.org: fix unused variable \u0027per_irq_sum\u0027]\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nTested-by: Jack Steiner \u003csteiner@sgi.com\u003e\nAcked-by: Jack Steiner \u003csteiner@sgi.com\u003e\nCc: Yinghai Lu \u003cyinghai@kernel.org\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f2c66cd8eeddedb440f33bc0f5cec1ed7ae376cb", "tree": "4b8cfcd2a76652839121707fc2a49b70489ec055", "parents": [ "19cd56c48da58bebc3a638e036bcab69469acd27" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Wed Oct 27 15:34:13 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Oct 27 18:03:13 2010 -0700" }, "message": "/proc/stat: scalability of irq num per cpu\n\n/proc/stat shows the total number of all interrupts to each cpu. But when\nthe number of IRQs are very large, it take very long time and \u0027cat\n/proc/stat\u0027 takes more than 10 secs. This is because sum of all irq\nevents are counted when /proc/stat is read. This patch adds \"sum of all\nirq\" counter percpu and reduce read costs.\n\nThe cost of reading /proc/stat is important because it\u0027s used by major\napplications as \u0027top\u0027, \u0027ps\u0027, \u0027w\u0027, etc....\n\nA test on a mechin (4096cpu, 256 nodes, 4592 irqs) shows\n\n %time cat /proc/stat \u003e /dev/null\n Before Patch: 12.627 sec\n After Patch: 2.459 sec\n\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nTested-by: Jack Steiner \u003csteiner@sgi.com\u003e\nAcked-by: Jack Steiner \u003csteiner@sgi.com\u003e\nCc: Yinghai Lu \u003cyinghai@kernel.org\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" } ], "next": "19cd56c48da58bebc3a638e036bcab69469acd27" }