)]}' { "log": [ { "commit": "7eafd7c74c3f2e67c27621b987b28397110d643f", "tree": "b4621aab78b6303f20386096c230b993044a4db7", "parents": [ "614b84cf4e4a920d2af32b8f147ea1e3b8c27ea6" ], "author": { "name": "Serge E. Hallyn", "email": "serue@us.ibm.com", "time": "Mon Apr 06 19:01:10 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Apr 07 08:31:09 2009 -0700" }, "message": "namespaces: ipc namespaces: implement support for posix msqueues\n\nImplement multiple mounts of the mqueue file system, and link it to usage\nof CLONE_NEWIPC.\n\nEach ipc ns has a corresponding mqueuefs superblock. When a user does\nclone(CLONE_NEWIPC) or unshare(CLONE_NEWIPC), the unshare will cause an\ninternal mount of a new mqueuefs sb linked to the new ipc ns.\n\nWhen a user does \u0027mount -t mqueue mqueue /dev/mqueue\u0027, he mounts the\nmqueuefs superblock.\n\nPosix message queues can be worked with both through the mq_* system calls\n(see mq_overview(7)), and through the VFS through the mqueue mount. Any\nusage of mq_open() and friends will work with the acting task\u0027s ipc\nnamespace. Any actions through the VFS will work with the mqueuefs in\nwhich the file was created. So if a user doesn\u0027t remount mqueuefs after\nunshare(CLONE_NEWIPC), mq_open(\"/ab\") will not be reflected in \"ls\n/dev/mqueue\".\n\nIf task a mounts mqueue for ipc_ns:1, then clones task b with a new ipcns,\nipcns:2, and then task a is the last task in ipc_ns:1 to exit, then (1)\nipc_ns:1 will be freed, (2) it\u0027s superblock will live on until task b\numounts the corresponding mqueuefs, and vfs actions will continue to\nsucceed, but (3) sb-\u003es_fs_info will be NULL for the sb corresponding to\nthe deceased ipc_ns:1.\n\nTo make this happen, we must protect the ipc reference count when\n\na) a task exits and drops its ipcns-\u003ecount, since it might be dropping\n it to 0 and freeing the ipcns\n\nb) a task accesses the ipcns through its mqueuefs interface, since it\n bumps the ipcns refcount and might race with the last task in the ipcns\n exiting.\n\nSo the kref is changed to an atomic_t so we can use\natomic_dec_and_lock(\u0026ns-\u003ecount,mq_lock), and every access to the ipcns\nthrough ns \u003d mqueuefs_sb-\u003es_fs_info is protected by the same lock.\n\nSigned-off-by: Cedric Le Goater \u003cclg@fr.ibm.com\u003e\nSigned-off-by: Serge E. Hallyn \u003cserue@us.ibm.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": "614b84cf4e4a920d2af32b8f147ea1e3b8c27ea6", "tree": "52478e38cd400042bd89f123c4101c95943ae492", "parents": [ "909e6d94795654040ed416ac69858d5d2ce66dd3" ], "author": { "name": "Serge E. Hallyn", "email": "serue@us.ibm.com", "time": "Mon Apr 06 19:01:08 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Apr 07 08:31:09 2009 -0700" }, "message": "namespaces: mqueue ns: move mqueue_mnt into struct ipc_namespace\n\nMove mqueue vfsmount plus a few tunables into the ipc_namespace struct.\nThe CONFIG_IPC_NS boolean and the ipc_namespace struct will serve both the\nposix message queue namespaces and the SYSV ipc namespaces.\n\nThe sysctl code will be fixed separately in patch 3. After just this\npatch, making a change to posix mqueue tunables always changes the values\nin the initial ipc namespace.\n\nSigned-off-by: Cedric Le Goater \u003cclg@fr.ibm.com\u003e\nSigned-off-by: Serge E. Hallyn \u003cserue@us.ibm.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": "5cbded585d129d0226cb48ac4202b253c781be26", "tree": "fb24edc194a57ee81a3bf8a4dd8a95030dd0ad22", "parents": [ "0743b86800cf1dfbf96df4a438938127bbe4476c" ], "author": { "name": "Robert P. J. Day", "email": "rpjday@mindspring.com", "time": "Wed Dec 13 00:35:56 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Wed Dec 13 09:05:58 2006 -0800" }, "message": "[PATCH] getting rid of all casts of k[cmz]alloc() calls\n\nRun this:\n\n\t#!/bin/sh\n\tfor f in $(grep -Erl \"\\([^\\)]*\\) *k[cmz]alloc\" *) ; do\n\t echo \"De-casting $f...\"\n\t perl -pi -e \"s/ ?\u003d ?\\([^\\)]*\\) *(k[cmz]alloc) *\\(/ \u003d \\1\\(/\" $f\n\tdone\n\nAnd then go through and reinstate those cases where code is casting pointers\nto non-pointers.\n\nAnd then drop a few hunks which conflicted with outstanding work.\n\nCc: Russell King \u003crmk@arm.linux.org.uk\u003e, Ian Molton \u003cspyro@f2s.com\u003e\nCc: Mikael Starvik \u003cstarvik@axis.com\u003e\nCc: Yoshinori Sato \u003cysato@users.sourceforge.jp\u003e\nCc: Roman Zippel \u003czippel@linux-m68k.org\u003e\nCc: Geert Uytterhoeven \u003cgeert@linux-m68k.org\u003e\nCc: Ralf Baechle \u003cralf@linux-mips.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Kyle McMartin \u003ckyle@mcmartin.ca\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nCc: Jeff Dike \u003cjdike@addtoit.com\u003e\nCc: Greg KH \u003cgreg@kroah.com\u003e\nCc: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nCc: Paul Fulghum \u003cpaulkf@microgate.com\u003e\nCc: Alan Cox \u003calan@lxorguk.ukuu.org.uk\u003e\nCc: Karsten Keil \u003ckkeil@suse.de\u003e\nCc: Mauro Carvalho Chehab \u003cmchehab@infradead.org\u003e\nCc: Jeff Garzik \u003cjeff@garzik.org\u003e\nCc: James Bottomley \u003cJames.Bottomley@steeleye.com\u003e\nCc: Ian Kent \u003craven@themaw.net\u003e\nCc: Steven French \u003csfrench@us.ibm.com\u003e\nCc: David Woodhouse \u003cdwmw2@infradead.org\u003e\nCc: Neil Brown \u003cneilb@cse.unsw.edu.au\u003e\nCc: Jaroslav Kysela \u003cperex@suse.cz\u003e\nCc: Takashi Iwai \u003ctiwai@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "f30c2269544bffc7bf1b0d7c0abe5be1be83b8cb", "tree": "2f6140d8a555af6a133690ed6b42599e78a43c54", "parents": [ "670e9f34ee3c7e052514c85014d2fdd99b672cdc" ], "author": { "name": "Uwe Zeisberger", "email": "Uwe_Zeisberger@digi.com", "time": "Tue Oct 03 23:01:26 2006 +0200" }, "committer": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Tue Oct 03 23:01:26 2006 +0200" }, "message": "fix file specification in comments\n\nMany files include the filename at the beginning, serveral used a wrong one.\n\nSigned-off-by: Uwe Zeisberger \u003cUwe_Zeisberger@digi.com\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\n" }, { "commit": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "tree": "0bba044c4ce775e45a88a51686b5d9f90697ea9d", "parents": [], "author": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Sat Apr 16 15:20:36 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Sat Apr 16 15:20:36 2005 -0700" }, "message": "Linux-2.6.12-rc2\n\nInitial git repository build. I\u0027m not bothering with the full history,\neven though we have it. We can create a separate \"historical\" git\narchive of that later if we want to, and in the meantime it\u0027s about\n3.2GB when imported into git - space that would just make the early\ngit days unnecessarily complicated, when we don\u0027t have a lot of good\ninfrastructure for it.\n\nLet it rip!\n" } ] }