)]}' { "log": [ { "commit": "884b8267d5f13bdcdc7e675ecbd0dbb0257689bb", "tree": "637c734a7466e43d3786968891e746c5b70d6a4b", "parents": [ "d14f5b810b49c7dbd1a01be1c6d3641d46090080", "c9ddec74aa950a220cc4caa5215cfc5d886050b7" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Apr 05 12:29:25 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Apr 05 12:29:25 2011 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:\n Btrfs: don\u0027t warn in btrfs_add_orphan\n Btrfs: fix free space cache when there are pinned extents and clusters V2\n Btrfs: Fix uninitialized root flags for subvolumes\n btrfs: clear __GFP_FS flag in the space cache inode\n Btrfs: fix memory leak in start_transaction()\n Btrfs: fix memory leak in btrfs_ioctl_start_sync()\n Btrfs: fix subvol_sem leak in btrfs_rename()\n Btrfs: Fix oops for defrag with compression turned on\n Btrfs: fix /proc/mounts info.\n Btrfs: fix compiler warning in file.c\n" }, { "commit": "08fe4db170b4193603d9d31f40ebaf652d07ac9c", "tree": "2d0d2abe40b77266600653e399d4973a679716a9", "parents": [ "adae52b94e18afa1f84fab67df2a8a872c2f5533" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Mon Mar 28 02:01:25 2011 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Tue Apr 05 01:20:24 2011 -0400" }, "message": "Btrfs: Fix uninitialized root flags for subvolumes\n\nroot_item-\u003eflags and root_item-\u003ebyte_limit are not initialized when\na subvolume is created. This bug is not revealed until we added\nreadonly snapshot support - now you mount a btrfs filesystem and you\nmay find the subvolumes in it are readonly.\n\nTo work around this problem, we steal a bit from root_item-\u003einode_item-\u003eflags,\nand use it to indicate if those fields have been properly initialized.\nWhen we read a tree root from disk, we check if the bit is set, and if\nnot we\u0027ll set the flag and initialize the two fields of the root item.\n\nReported-by: Andreas Philipp \u003cphilipp.andreas@gmail.com\u003e\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nTested-by: Andreas Philipp \u003cphilipp.andreas@gmail.com\u003e\ncc: stable@kernel.org\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "8b2b2d3cbefb605501342adaf64d601b545ed154", "tree": "244e724c20bbdc639f06a7a59a108b1eedd55f10", "parents": [ "b44c59a80ded004e1a82712e5f9e17b131c03221" ], "author": { "name": "Tsutomu Itoh", "email": "t-itoh@jp.fujitsu.com", "time": "Mon Apr 04 01:52:13 2011 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Tue Apr 05 01:19:42 2011 -0400" }, "message": "Btrfs: fix memory leak in btrfs_ioctl_start_sync()\n\nCall btrfs_end_transaction() if btrfs_commit_transaction_async() fails.\n\nSigned-off-by: Tsutomu Itoh \u003ct-itoh@jp.fujitsu.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "212a17ab878305600e607f637d2d8a49d9f7ef25", "tree": "64ad97fcc3d5c49ebd735f5508643c798aeecddf", "parents": [ "baaca1a61497d97cec595fedce03b0a23b983e64", "d9d04879321af570ea7285c6dad92d9c3cd108a1" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Mar 28 15:31:05 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Mar 28 15:31:05 2011 -0700" }, "message": "Merge branch \u0027for-linus-unmerged\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable\n\n* \u0027for-linus-unmerged\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: (45 commits)\n Btrfs: fix __btrfs_map_block on 32 bit machines\n btrfs: fix possible deadlock by clearing __GFP_FS flag\n btrfs: check link counter overflow in link(2)\n btrfs: don\u0027t mess with i_nlink of unlocked inode in rename()\n Btrfs: check return value of btrfs_alloc_path()\n Btrfs: fix OOPS of empty filesystem after balance\n Btrfs: fix memory leak of empty filesystem after balance\n Btrfs: fix return value of setflags ioctl\n Btrfs: fix uncheck memory allocations\n btrfs: make inode ref log recovery faster\n Btrfs: add btrfs_trim_fs() to handle FITRIM\n Btrfs: adjust btrfs_discard_extent() return errors and trimmed bytes\n Btrfs: make btrfs_map_block() return entire free extent for each device of RAID0/1/10/DUP\n Btrfs: make update_reserved_bytes() public\n btrfs: return EXDEV when linking from different subvolumes\n Btrfs: Per file/directory controls for COW and compression\n Btrfs: add datacow flag in inode flag\n btrfs: use GFP_NOFS instead of GFP_KERNEL\n Btrfs: check return value of read_tree_block()\n btrfs: properly access unaligned checksum buffer\n ...\n\nFix up trivial conflicts in fs/btrfs/volumes.c due to plug removal in\nthe block layer.\n" }, { "commit": "2d4e6f6ad2b9f84f568d07dae4bdbc7f48a70ad1", "tree": "eb1490b2b5383fc92eaf276ef31011ec206a2439", "parents": [ "dac97e516c617f9c797f64b0224050b70aea30c7" ], "author": { "name": "liubo", "email": "liubo2009@cn.fujitsu.com", "time": "Thu Feb 24 09:38:16 2011 +0000" }, "committer": { "name": "root", "email": "Chris Mason chris.mason@oracle.com", "time": "Mon Mar 28 05:37:51 2011 -0400" }, "message": "Btrfs: fix return value of setflags ioctl\n\nsetflags ioctl should return error when any checks fail.\n\nSigned-off-by: Liu Bo \u003cliubo2009@cn.fujitsu.com\u003e\nReviewed-by: David Sterba \u003cdsterba@suse.cz\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "f7039b1d5c32241f87a513e33120db36bf30264d", "tree": "e911bc79c795fceb3e9a618d8f18571c2a776307", "parents": [ "5378e60734f5b7bfe1b43dc191aaf6131c1befe7" ], "author": { "name": "Li Dongyang", "email": "lidongyang@novell.com", "time": "Thu Mar 24 10:24:28 2011 +0000" }, "committer": { "name": "root", "email": "Chris Mason chris.mason@oracle.com", "time": "Mon Mar 28 05:37:47 2011 -0400" }, "message": "Btrfs: add btrfs_trim_fs() to handle FITRIM\n\nWe take an free extent out from allocator, trim it, then put it back,\nbut before we trim the block group, we should make sure the block group is\ncached, so plus a little change to make cache_block_group() run without a\ntransaction.\n\nSigned-off-by: Li Dongyang \u003clidongyang@novell.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "75e7cb7fe0c391561bd3af36515be3f3c64a04c6", "tree": "3738481e2db10b2904a4434e4ca42d326da02be7", "parents": [ "32471f6e1983922473573da62cbee58699574aa4" ], "author": { "name": "Liu Bo", "email": "liubo2009@cn.fujitsu.com", "time": "Tue Mar 22 10:12:20 2011 +0000" }, "committer": { "name": "root", "email": "Chris Mason chris.mason@oracle.com", "time": "Mon Mar 28 05:37:41 2011 -0400" }, "message": "Btrfs: Per file/directory controls for COW and compression\n\nData compression and data cow are controlled across the entire FS by mount\noptions right now. ioctls are needed to set this on a per file or per\ndirectory basis. This has been proposed previously, but VFS developers\nwanted us to use generic ioctls rather than btrfs-specific ones.\n\nAccording to Chris\u0027s comment, there should be just one true compression\nmethod(probably LZO) stored in the super. However, before this, we would\nwait for that one method is stable enough to be adopted into the super.\nSo I list it as a long term goal, and just store it in ram today.\n\nAfter applying this patch, we can use the generic \"FS_IOC_SETFLAGS\" ioctl to\ncontrol file and directory\u0027s datacow and compression attribute.\n\nNOTE:\n - The compression type is selected by such rules:\n If we mount btrfs with compress options, ie, zlib/lzo, the type is it.\n Otherwise, we\u0027ll use the default compress type (zlib today).\n\nv1-\u003ev2:\n- rebase to the latest btrfs.\nv2-\u003ev3:\n- fix a problem, i.e. when a file is set NOCOW via mount option, then this NOCOW\n will be screwed by inheritance from parent directory.\n\nSigned-off-by: Liu Bo \u003cliubo2009@cn.fujitsu.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "db5b493ac78e46c7b6bad22cd25d8041564cd8ea", "tree": "18f484c3d8194b80165e5400831931a3ac5c58ba", "parents": [ "1abe9b8a138c9988ba8f7bfded6453649a31541f" ], "author": { "name": "Tsutomu Itoh", "email": "t-itoh@jp.fujitsu.com", "time": "Wed Mar 23 08:14:16 2011 +0000" }, "committer": { "name": "root", "email": "Chris Mason chris.mason@oracle.com", "time": "Mon Mar 28 05:37:35 2011 -0400" }, "message": "Btrfs: cleanup some BUG_ON()\n\nThis patch changes some BUG_ON() to the error return.\n(but, most callers still use BUG_ON())\n\nSigned-off-by: Tsutomu Itoh \u003ct-itoh@jp.fujitsu.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "2e1496707560ecf98e9b0604622c0990f94861d3", "tree": "d1473b70fad31a903fedc87221680678a6c6c5f6", "parents": [ "e795b71799ff0b27365020c9ddaa25d0d83f99c8" ], "author": { "name": "Serge E. Hallyn", "email": "serge@hallyn.com", "time": "Wed Mar 23 16:43:26 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Mar 23 19:47:13 2011 -0700" }, "message": "userns: rename is_owner_or_cap to inode_owner_or_capable\n\nAnd give it a kernel-doc comment.\n\n[akpm@linux-foundation.org: btrfs changed in linux-next]\nSigned-off-by: Serge E. Hallyn \u003cserge.hallyn@canonical.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Daniel Lezcano \u003cdaniel.lezcano@free.fr\u003e\nAcked-by: David Howells \u003cdhowells@redhat.com\u003e\nCc: James Morris \u003cjmorris@namei.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "66b4ffd110f9b48b8d8c1319ee446b53b8d073bf", "tree": "690b14cda46b47c0d71be15a82019c35729afa75", "parents": [ "3893e33b0bebee2f67d96b6c15259dc884523c20" ], "author": { "name": "Josef Bacik", "email": "josef@redhat.com", "time": "Mon Jan 31 16:22:42 2011 -0500" }, "committer": { "name": "Josef Bacik", "email": "josef@redhat.com", "time": "Thu Mar 17 14:21:26 2011 -0400" }, "message": "Btrfs: handle errors in btrfs_orphan_cleanup\n\nIf we cannot truncate an inode for some reason we will never delete the orphan\nitem associated with that inode, which means that we will loop forever in\nbtrfs_orphan_cleanup. Instead of doing this just return error so we fail to\nmount. It sucks, but hey it\u0027s better than hanging. Thanks,\n\nSigned-off-by: Josef Bacik \u003cjosef@redhat.com\u003e\n" }, { "commit": "b4dc2b8c694ead005b828f5fb7fa1134db5b6275", "tree": "ba01c2bb5381ab9a34c4152ed4dd83c1797f780c", "parents": [ "c87f08ca44e83b2c8d28f63f9c33f3a270a04bbe" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Wed Feb 16 06:06:34 2011 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Wed Feb 16 15:37:58 2011 -0500" }, "message": "Btrfs: Fix BTRFS_IOC_SUBVOL_SETFLAGS ioctl\n\n- Check user-specified flags correctly\n- Check the inode owership\n- Search root item in root tree but not fs tree\n\nReported-by: Dan Rosenberg \u003cdrosenberg@vsecurity.com\u003e\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "51788b1bdd0d68345bab0af4301e7fa429277228", "tree": "52895ef3c348c2dfa1f1ef2c4557d9f7515dfc3b", "parents": [ "6848ad6461e551849ba3c32d945d4f45e96453a6" ], "author": { "name": "Dan Rosenberg", "email": "drosenberg@vsecurity.com", "time": "Mon Feb 14 16:04:23 2011 -0500" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Mon Feb 14 16:04:23 2011 -0500" }, "message": "btrfs: prevent heap corruption in btrfs_ioctl_space_info()\n\nCommit bf5fc093c5b625e4259203f1cee7ca73488a5620 refactored\nbtrfs_ioctl_space_info() and introduced several security issues.\n\nspace_args.space_slots is an unsigned 64-bit type controlled by a\npossibly unprivileged caller. The comparison as a signed int type\nallows providing values that are treated as negative and cause the\nsubsequent allocation size calculation to wrap, or be truncated to 0.\nBy providing a size that\u0027s truncated to 0, kmalloc() will return\nZERO_SIZE_PTR. It\u0027s also possible to provide a value smaller than the\nslot count. The subsequent loop ignores the allocation size when\ncopying data in, resulting in a heap overflow or write to ZERO_SIZE_PTR.\n\nThe fix changes the slot count type and comparison typecast to u64,\nwhich prevents truncation or signedness errors, and also ensures that we\ndon\u0027t copy more data than we\u0027ve allocated in the subsequent loop. Note\nthat zero-size allocations are no longer possible since there is already\nan explicit check for space_args.space_slots being 0 and truncation of\nthis value is no longer an issue.\n\nSigned-off-by: Dan Rosenberg \u003cdrosenberg@vsecurity.com\u003e\nSigned-off-by: Josef Bacik \u003cjosef@redhat.com\u003e\nReviewed-by: Josef Bacik \u003cjosef@redhat.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "98d5dc13e7e74b77ca3b4c3cbded9f48d2dbbbb7", "tree": "8e75f67b28b5b0d909483a06bb5258e0ba0c9789", "parents": [ "5df67083488ccbad925f583b698ab38f8629a016" ], "author": { "name": "Tsutomu Itoh", "email": "t-itoh@jp.fujitsu.com", "time": "Thu Jan 20 06:19:37 2011 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Tue Feb 01 07:17:27 2011 -0500" }, "message": "btrfs: fix return value check of btrfs_start_transaction()\n\nThe error check of btrfs_start_transaction() is added, and the mistake\nof the error check on several places is corrected.\n\nSigned-off-by: Tsutomu Itoh \u003ct-itoh@jp.fujitsu.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "abd30bb0af9d4671506502278e8631bed9e3c35c", "tree": "73e00f8712c8e4460647dd889cc32503fb56c21b", "parents": [ "3612b49598c303cfb22a4b609427f829828e2427" ], "author": { "name": "Tsutomu Itoh", "email": "t-itoh@jp.fujitsu.com", "time": "Mon Jan 24 00:57:10 2011 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Jan 28 16:40:37 2011 -0500" }, "message": "btrfs: check return value of btrfs_start_ioctl_transaction() properly\n\nbtrfs_start_ioctl_transaction() returns ERR_PTR(), not NULL.\nSo, it is necessary to use IS_ERR() to check the return value.\n\nSigned-off-by: Tsutomu Itoh \u003ct-itoh@jp.fujitsu.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "3612b49598c303cfb22a4b609427f829828e2427", "tree": "d0e9eabb176777ab80af5d78eab0555044172370", "parents": [ "34d19bada00f4825588b338a8ee193820f9ceeb0" ], "author": { "name": "Tsutomu Itoh", "email": "t-itoh@jp.fujitsu.com", "time": "Tue Jan 25 02:51:38 2011 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Jan 28 16:40:37 2011 -0500" }, "message": "btrfs: fix return value check of btrfs_join_transaction()\n\nThe error check of btrfs_join_transaction()/btrfs_join_transaction_nolock()\nis added, and the mistake of the error check in several places is\ncorrected.\n\nFor more stable Btrfs, I think that we should reduce BUG_ON().\nBut, I think that long time is necessary for this.\nSo, I propose this patch as a short-term solution.\n\nWith this patch:\n - To more stable Btrfs, the part that should be corrected is clarified.\n - The panic isn\u0027t done by the NULL pointer reference etc. (even if\n BUG_ON() is increased temporarily)\n - The error code is returned in the place where the error can be easily\n returned.\n\nAs a long-term plan:\n - BUG_ON() is reduced by using the forced-readonly framework, etc.\n\nSigned-off-by: Tsutomu Itoh \u003ct-itoh@jp.fujitsu.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "eab49bec41136460b12ac0fbeceeb88386d538c7", "tree": "d2ad3e163407d7779d53fdaa0dedcc3b934106de", "parents": [ "acce952b0263825da32cf10489413dec78053347", "4d728ec7aefdca5419d2ebfb28c147e81a4b59f4" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Jan 28 16:24:59 2011 -0500" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Jan 28 16:24:59 2011 -0500" }, "message": "Merge branch \u0027bug-fixes\u0027 of git://repo.or.cz/linux-btrfs-devel into btrfs-38\n" }, { "commit": "4d728ec7aefdca5419d2ebfb28c147e81a4b59f4", "tree": "19dc56836d053c04d796ddca126dd60232175bb0", "parents": [ "b897abec032deb7cc3ce67392a1f544ac965ddea" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Wed Jan 26 14:10:43 2011 +0800" }, "committer": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Thu Jan 27 01:11:18 2011 +0800" }, "message": "Btrfs: Fix file clone when source offset is not 0\n\nSuppose:\n- the source extent is: [0, 100]\n- the src offset is 10\n- the clone length is 90\n- the dest offset is 0\n\nThis statement:\n\n\tnew_key.offset \u003d key.offset + destoff - off\n\nwill produce such an extent for the dest file:\n\n\t[ino, BTRFS_EXTENT_DATA_KEY, -10]\n\n, which is obviously wrong.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\n" }, { "commit": "f892436eb2c3223fecda614a64d51f36f6ec2245", "tree": "75001db8c8b7fad547cbd4e99494727287598c1c", "parents": [ "26c79f6ba0ccdc4bbc8ef8721406d37e9178e30b", "3a39c18d63fec35f49df577d4b2a4e29c2212f22" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Sun Jan 16 11:25:54 2011 -0500" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Sun Jan 16 11:25:54 2011 -0500" }, "message": "Merge branch \u0027lzo-support\u0027 of git://repo.or.cz/linux-btrfs-devel into btrfs-38\n" }, { "commit": "0caa102da82799efaba88e234484786a9591c797", "tree": "748bb0d8054bb85256904ffe29913277e5b80684", "parents": [ "b83cc9693f39689490970c19f6c5b866f6719a70" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Mon Dec 20 16:30:25 2010 +0800" }, "committer": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Thu Dec 23 08:49:19 2010 +0800" }, "message": "Btrfs: Add BTRFS_IOC_SUBVOL_GETFLAGS/SETFLAGS ioctls\n\nThis allows us to set a snapshot or a subvolume readonly or writable\non the fly.\n\nUsage:\n\nSet BTRFS_SUBVOL_RDONLY of btrfs_ioctl_vol_arg_v2-\u003eflags, and then\ncall ioctl(BTRFS_IOCTL_SUBVOL_SETFLAGS);\n\nChangelog for v3:\n\n- Change to pass __u64 as ioctl parameter.\n\nChangelog for v2:\n\n- Add _GETFLAGS ioctl.\n- Check if the passed fd is the root of a subvolume.\n- Change the name from _SNAP_SETFLAGS to _SUBVOL_SETFLAGS.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\n" }, { "commit": "b83cc9693f39689490970c19f6c5b866f6719a70", "tree": "b86d09884015fce195a4ac5ff1e8ec5f6ec00677", "parents": [ "fa0d2b9bd717340e0bc4850a80ac0eb344e9a7fb" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Mon Dec 20 16:04:08 2010 +0800" }, "committer": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Thu Dec 23 08:49:17 2010 +0800" }, "message": "Btrfs: Add readonly snapshots support\n\nUsage:\n\nSet BTRFS_SUBVOL_RDONLY of btrfs_ioctl_vol_arg_v2-\u003eflags, and call\nioctl(BTRFS_I0CTL_SNAP_CREATE_V2).\n\nImplementation:\n\n- Set readonly bit of btrfs_root_item-\u003eflags.\n- Add readonly checks in btrfs_permission (inode_permission),\nbtrfs_setattr, btrfs_set/remove_xattr and some ioctls.\n\nChangelog for v3:\n\n- Eliminate btrfs_root-\u003ereadonly, but check btrfs_root-\u003eroot_item.flags.\n- Rename BTRFS_ROOT_SNAP_RDONLY to BTRFS_ROOT_SUBVOL_RDONLY.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\n" }, { "commit": "fa0d2b9bd717340e0bc4850a80ac0eb344e9a7fb", "tree": "f17b1e86d602236e7be49821ed8f9109819e29fb", "parents": [ "83a50de97fe96aca82389e061862ed760ece2283" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Mon Dec 20 15:53:28 2010 +0800" }, "committer": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Thu Dec 23 08:49:15 2010 +0800" }, "message": "Btrfs: Refactor btrfs_ioctl_snap_create()\n\nSplit it into two functions for two different ioctls, since they\nshare no common code.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\n" }, { "commit": "1a419d85a76853d7d04e9b6280a80e96770bf3e3", "tree": "01535c5571208561af5d475eaa151e1c2f936f57", "parents": [ "a6fa6fae40ec336c7df6155255ae64ebef43a8bc" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Mon Oct 25 15:12:50 2010 +0800" }, "committer": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Wed Dec 22 23:15:48 2010 +0800" }, "message": "btrfs: Allow to specify compress method when defrag\n\nUpdate defrag ioctl, so one can choose lzo or zlib when turning\non compression in defrag operation.\n\nChangelog:\n\nv1 -\u003e v2\n- Add incompability flag.\n- Fix to check invalid compress type.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\n" }, { "commit": "261507a02ccba9afda919852263b6bc1581ce1ef", "tree": "c16bc657ff4e29a87042ceb379487f24dff01035", "parents": [ "4b72029dc3fd6ba7dc45ccd1cf0aa0ebfa209bd3" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Fri Dec 17 14:21:50 2010 +0800" }, "committer": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Wed Dec 22 23:15:45 2010 +0800" }, "message": "btrfs: Allow to add new compression algorithm\n\nMake the code aware of compression type, instead of always assuming\nzlib compression.\n\nAlso make the zlib workspace function as common code for all\ncompression types.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\n" }, { "commit": "fdfb1e4f6c61477a61890b64974d65cdc3a98702", "tree": "2bb65569dfbcfe12e4d54449d018abeebf88e89d", "parents": [ "914ee295af418e936ec20a08c1663eaabe4cd07a" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Fri Dec 10 06:41:56 2010 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Dec 10 16:29:11 2010 -0500" }, "message": "Btrfs: Make async snapshot ioctl more generic\n\nIf we had reserved some bytes in struct btrfs_ioctl_vol_args, we\nwouldn\u0027t have to create a new structure for async snapshot creation.\n\nHere we convert async snapshot ioctl to use a more generic ABI, as\nwe\u0027ll add more ioctls for snapshots/subvolumes in the future, readonly\nsnapshots for example.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "75eaa0e22c055e38982df267d0f84cc510ba38bf", "tree": "073828ec809c95dbae9368b7f83a3734dad82b45", "parents": [ "24ae63656a165c870c0d69fcc8aac1dc35e25e34" ], "author": { "name": "Sage Weil", "email": "sage@newdream.net", "time": "Fri Dec 10 00:36:28 2010 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Dec 10 16:29:10 2010 -0500" }, "message": "Btrfs: fix sync subvol/snapshot creation\n\nWe were incorrectly taking the async path even for the sync ioctls by\npassing in \u0026transid unconditionally.\n\nThere\u0027s ample room for further cleanup here, but this keeps the fix simple.\n\nSigned-off-by: Sage Weil \u003csage@newdream.net\u003e\nReviewed-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "6a912213046ecb6511fdf35531a0c7de3de963c9", "tree": "b745a07d0ad5c5bedf68c55739200093f9d96c1b", "parents": [ "76195853903ca613ba722203db9b747d70478fc7" ], "author": { "name": "Josef Bacik", "email": "josef@redhat.com", "time": "Sat Nov 20 09:48:00 2010 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Sun Nov 21 22:26:09 2010 -0500" }, "message": "Btrfs: use dget_parent where we can UPDATED\n\nThere are lots of places where we do dentry-\u003ed_parent-\u003ed_inode without holding\nthe dentry-\u003ed_lock. This could cause problems with rename. So instead we need\nto use dget_parent() and hold the reference to the parent as long as we are\ngoing to use it\u0027s inode and then dput it at the end.\n\nSigned-off-by: Josef Bacik \u003cjosef@redhat.com\u003e\nCc: raven@themaw.net\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "5f3888ff6f0b9dce60705765752b788a92557644", "tree": "c7745507d85f68b188f0c9b11cc6f783f0d0cb86", "parents": [ "2a6b8daedaf3682bed3fc1d4e2390491f6e19c49" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Fri Nov 19 01:36:34 2010 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Sun Nov 21 22:26:06 2010 -0500" }, "message": "btrfs: Set file size correctly in file clone\n\nSet src_offset \u003d 0, src_length \u003d 20K, dest_offset \u003d 20K. And the\noriginal filesize of the dest file \u0027file2\u0027 is 30K:\n\n # ls -l /mnt/file2\n -rw-r--r-- 1 root root 30720 Nov 18 16:42 /mnt/file2\n\nNow clone file1 to file2, the dest file should be 40K, but it\nstill shows 30K:\n\n # ls -l /mnt/file2\n -rw-r--r-- 1 root root 30720 Nov 18 16:42 /mnt/file2\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "2a6b8daedaf3682bed3fc1d4e2390491f6e19c49", "tree": "76f418aa17a1e3e690d5c1fb164e0c4b96ca1e8d", "parents": [ "0de90876c6cb774d4a424dafc1fc9ec50071b81b" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Fri Nov 19 01:36:10 2010 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Sun Nov 21 22:26:05 2010 -0500" }, "message": "btrfs: Check if dest_offset is block-size aligned before cloning file\n\nWe\u0027ve done the check for src_offset and src_length, and We should\nalso check dest_offset, otherwise we\u0027ll corrupt the destination\nfile:\n\n (After cloning file1 to file2 with unaligned dest_offset)\n # cat /mnt/file2\n cat: /mnt/file2: Input/output error\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "4260f7c7516f4c209cf0ca34fda99cc9a0847772", "tree": "7feb5ab81d074b17a7c5b12bcc019c2e1bb010e2", "parents": [ "531cb13f1e417c060b54f979e1659ecd69bea650" ], "author": { "name": "Sage Weil", "email": "sage@newdream.net", "time": "Fri Oct 29 15:46:43 2010 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Oct 29 21:42:10 2010 -0400" }, "message": "Btrfs: allow subvol deletion by unprivileged user with -o user_subvol_rm_allowed\n\nAdd a mount option user_subvol_rm_allowed that allows users to delete a\n(potentially non-empty!) subvol when they would otherwise we allowed to do\nan rmdir(2). We duplicate the may_delete() checks from the core VFS code\nto implement identical security checks (minus the directory size check).\nWe additionally require that the user has write+exec permission on the\nsubvol root inode.\n\nSigned-off-by: Sage Weil \u003csage@newdream.net\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "531cb13f1e417c060b54f979e1659ecd69bea650", "tree": "6b421ac1ddf7cad271cd0c767f0c19e6c4f826df", "parents": [ "72fd032e94240d001b1d22f2c1dfd2592b02e44e" ], "author": { "name": "Sage Weil", "email": "sage@newdream.net", "time": "Fri Oct 29 15:41:32 2010 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Oct 29 21:42:10 2010 -0400" }, "message": "Btrfs: make SNAP_DESTROY async\n\nThere is no reason to force an immediate commit when deleting a snapshot.\nUsers have some expectation that space from a deleted snapshot be freed\nimmediately, but even if we do commit the reclaim is a background process.\n\nIf users _do_ want the deletion to be durable, they can call \u0027sync\u0027.\n\nSigned-off-by: Sage Weil \u003csage@newdream.net\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "72fd032e94240d001b1d22f2c1dfd2592b02e44e", "tree": "7671ea5585f79a8cecc9708e869aa37e24eb74de", "parents": [ "462045928bda777c86919a396a42991fcf235378" ], "author": { "name": "Sage Weil", "email": "sage@newdream.net", "time": "Fri Oct 29 15:41:32 2010 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Oct 29 21:41:57 2010 -0400" }, "message": "Btrfs: add SNAP_CREATE_ASYNC ioctl\n\nCreate a snap without waiting for it to commit to disk. The ioctl is\nordered such that subsequent operations will not be contained by the\ncreated snapshot, and the commit is initiated, but the ioctl does not\nwait for the snapshot to commit to disk.\n\nWe return the specific transid to userspace so that an application can wait\nfor this specific snapshot creation to commit via the WAIT_SYNC ioctl.\n\nSigned-off-by: Sage Weil \u003csage@newdream.net\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "462045928bda777c86919a396a42991fcf235378", "tree": "c2b12ff8e9ef1951b5960b853034bd4165578f99", "parents": [ "bb9c12c945cbd1b0eaa1589546dde772ccabeeba" ], "author": { "name": "Sage Weil", "email": "sage@newdream.net", "time": "Fri Oct 29 15:41:32 2010 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Oct 29 15:41:32 2010 -0400" }, "message": "Btrfs: add START_SYNC, WAIT_SYNC ioctls\n\nSTART_SYNC will start a sync/commit, but not wait for it to\ncomplete. Any modification started after the ioctl returns is\nguaranteed not to be included in the commit. If a non-NULL\npointer is passed, the transaction id will be returned to\nuserspace.\n\nWAIT_SYNC will wait for any in-progress commit to complete. If a\ntransaction id is specified, the ioctl will block and then\nreturn (success) when the specified transaction has committed.\nIf it has already committed when we call the ioctl, it returns\nimmediately. If the specified transaction doesn\u0027t exist, it\nreturns EINVAL.\n\nIf no transaction id is specified, WAIT_SYNC will wait for the\ncurrently committing transaction to finish it\u0027s commit to disk.\nIf there is no currently committing transaction, it returns\nsuccess.\n\nThese ioctls are useful for applications which want to impose an\nordering on when fs modifications reach disk, but do not want to\nwait for the full (slow) commit process to do so.\n\nPicky callers can take the transid returned by START_SYNC and\nfeed it to WAIT_SYNC, and be certain to wait only as long as\nnecessary for the transaction _they_ started to reach disk.\n\nSloppy callers can START_SYNC and WAIT_SYNC without a transid,\nand provided they didn\u0027t wait too long between the calls, they\nwill get the same result. However, if a second commit starts\nbefore they call WAIT_SYNC, they may end up waiting longer for\nit to commit as well. Even so, a START_SYNC+WAIT_SYNC still\nguarantees that any operation completed before the START_SYNC\nreaches disk.\n\nSigned-off-by: Sage Weil \u003csage@newdream.net\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "fccdae435c1b295cca546f23f6f43126a28ffac3", "tree": "e5c84325114cd554c62e7e275e85596200b45d19", "parents": [ "050006a753bab8ba05f2113cc57ba49398cd5521" ], "author": { "name": "Sage Weil", "email": "sage@newdream.net", "time": "Fri Oct 29 15:37:33 2010 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Oct 29 15:37:33 2010 -0400" }, "message": "Btrfs: fix lockdep warning on clone ioctl\n\nI\u0027m no lockdep expert, but this appears to make the lockdep warning go\naway for the i_mutex locking in the clone ioctl.\n\nSigned-off-by: Sage Weil \u003csage@newdream.net\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "050006a753bab8ba05f2113cc57ba49398cd5521", "tree": "43b8bdc0ce9f76d2726096dbfbc72a04c141afa6", "parents": [ "9a019196ecaa57780141ef5d1f0bb31050d6ed5b" ], "author": { "name": "Sage Weil", "email": "sage@newdream.net", "time": "Fri Oct 29 15:37:33 2010 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Oct 29 15:37:33 2010 -0400" }, "message": "Btrfs: fix clone ioctl where range is adjacent to extent\n\nWe had an edge case issue where the requested range was just\nfollowing an existing extent. Instead of skipping to the next\nextent, we used the previous one which lead to having zero\nsized extents.\n\nSigned-off-by: Yehuda Sadeh \u003cyehuda@hq.newdream.net\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "9a019196ecaa57780141ef5d1f0bb31050d6ed5b", "tree": "abd838acff1d6407d2d91efeb38e76e53271aadb", "parents": [ "d8e39c457bc1ca2a7304bc086c7b0f0c10854921" ], "author": { "name": "Sage Weil", "email": "sage@newdream.net", "time": "Fri Oct 29 15:37:33 2010 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Oct 29 15:37:33 2010 -0400" }, "message": "Btrfs: fix delalloc checks in clone ioctl\n\nThe lookup_first_ordered_extent() was done on the wrong inode, and the\n-\u003edelalloc_bytes test was wrong, as the following\nbtrfs_wait_ordered_range() would only invoke a range write and wouldn\u0027t\nwrite the entire file data range. Also, a bad parameter was passed to\nbtrfs_wait_ordered_range().\n\nSigned-off-by: Yehuda Sadeh \u003cyehuda@hq.newdream.net\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "559af8211433b8c0b20e6c43c61409cb9c9c2996", "tree": "702ebd4c4f5b610daa36f65d814a518356a9a46b", "parents": [ "411fc6bcef54f828a5458f4730c68abdf13c6bf0" ], "author": { "name": "Andi Kleen", "email": "andi@firstfloor.org", "time": "Fri Oct 29 15:14:37 2010 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Oct 29 15:14:37 2010 -0400" }, "message": "Btrfs: cleanup warnings from gcc 4.6 (nonbugs)\n\nThese are all the cases where a variable is set, but not read which are\nnot bugs as far as I can see, but simply leftovers.\n\nStill needs more review.\n\nFound by gcc 4.6\u0027s new warnings\n\nSigned-off-by: Andi Kleen \u003cak@linux.intel.com\u003e\nCc: Chris Mason \u003cchris.mason@oracle.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "2354d08fe9aeec3e451b85cb5387a6b28dbca0b1", "tree": "7a3f43dfac81fc54faf231400a4b871ca24bb031", "parents": [ "18e503d695ff8ff9a43768555aa74575bf6b77f3" ], "author": { "name": "Julia Lawall", "email": "julia@diku.dk", "time": "Fri Oct 29 15:14:18 2010 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Oct 29 15:14:18 2010 -0400" }, "message": "Btrfs: use memdup_user helpers\n\nUse memdup_user when user data is immediately copied into the\nallocated region.\n\nThe semantic patch that makes this change is as follows:\n(http://coccinelle.lip6.fr/)\n\n// \u003csmpl\u003e\n@@\nexpression from,to,size,flag;\nposition p;\nidentifier l1,l2;\n@@\n\n- to \u003d \\(kmalloc@p\\|kzalloc@p\\)(size,flag);\n+ to \u003d memdup_user(from,size);\n if (\n- to\u003d\u003dNULL\n+ IS_ERR(to)\n || ...) {\n \u003c+... when !\u003d goto l1;\n- -ENOMEM\n+ PTR_ERR(to)\n ...+\u003e\n }\n- if (copy_from_user(to, from, size) !\u003d 0) {\n- \u003c+... when !\u003d goto l2;\n- -EFAULT\n- ...+\u003e\n- }\n// \u003c/smpl\u003e\n\nSigned-off-by: Julia Lawall \u003cjulia@diku.dk\u003e\nCc: Chris Mason \u003cchris.mason@oracle.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "bf5fc093c5b625e4259203f1cee7ca73488a5620", "tree": "099385541c534c1adcdb4251277ee4364562d5ec", "parents": [ "a1f765061e1491d5ec467429d0d6adfd9df2f6d9" ], "author": { "name": "Josef Bacik", "email": "josef@redhat.com", "time": "Wed Sep 29 11:22:36 2010 -0400" }, "committer": { "name": "Josef Bacik", "email": "josef@redhat.com", "time": "Fri Oct 22 15:54:53 2010 -0400" }, "message": "Btrfs: fix the df ioctl to report raid types\n\nThe new ENOSPC stuff broke the df ioctl since we no longer create seperate space\ninfo\u0027s for each RAID type. So instead, loop through each space info\u0027s raid\nlists so we can get the right RAID information which will allow the df ioctl to\ntell us RAID types again. Thanks,\n\nSigned-off-by: Josef Bacik \u003cjosef@redhat.com\u003e\n" }, { "commit": "2ebc3464781ad24474abcbd2274e6254689853b5", "tree": "3d58dfcc14948672c0aac1636cdd57cbe46a135d", "parents": [ "b5384d48f4e74edec3ca1887cb65e378a72af9a1" ], "author": { "name": "Dan Rosenberg", "email": "dan.j.rosenberg@gmail.com", "time": "Mon Jul 19 16:58:20 2010 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Mon Jul 19 16:58:20 2010 -0400" }, "message": "Btrfs: fix checks in BTRFS_IOC_CLONE_RANGE\n\n1. The BTRFS_IOC_CLONE and BTRFS_IOC_CLONE_RANGE ioctls should check\nwhether the donor file is append-only before writing to it.\n\n2. The BTRFS_IOC_CLONE_RANGE ioctl appears to have an integer\noverflow that allows a user to specify an out-of-bounds range to copy\nfrom the source file (if off + len wraps around). I haven\u0027t been able\nto successfully exploit this, but I\u0027d imagine that a clever attacker\ncould use this to read things he shouldn\u0027t. Even if it\u0027s not\nexploitable, it couldn\u0027t hurt to be safe.\n\nSigned-off-by: Dan Rosenberg \u003cdan.j.rosenberg@gmail.com\u003e\ncc: stable@kernel.org\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "b5384d48f4e74edec3ca1887cb65e378a72af9a1", "tree": "cf41ab7d6a2c2606abe465c8229f002675696de0", "parents": [ "99d8f83c98930100cd70437b0c81a935e7a14b0b" ], "author": { "name": "Sage Weil", "email": "sage@newdream.net", "time": "Sat Jun 12 22:31:14 2010 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Mon Jul 19 16:15:06 2010 -0400" }, "message": "Btrfs: fix CLONE ioctl destination file size expansion to block boundary\n\nThe CLONE and CLONE_RANGE ioctls round up the range of extents being\ncloned to the block size when the range to clone extends to the end of file\n(this is always the case with CLONE). It was then using that offset when\nextending the destination file\u0027s i_size. Fix this by not setting i_size\nbeyond the originally requested ending offset.\n\nThis bug was introduced by a22285a6 (2.6.35-rc1).\n\nSigned-off-by: Sage Weil \u003csage@newdream.net\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "cf1e99a4e0daa4a5623cd71108509823b9ff2d30", "tree": "e2e613940e9d4449be976a5a09e1c2a72bb45a83", "parents": [ "3140c9a34b44cd4013baae8704fdb34a93a44475" ], "author": { "name": "Dan Carpenter", "email": "error27@gmail.com", "time": "Sat May 29 09:47:24 2010 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Jun 11 15:57:37 2010 -0400" }, "message": "Btrfs: btrfs_lookup_dir_item() can return ERR_PTR\n\nbtrfs_lookup_dir_item() can return either ERR_PTRs or null.\n\nSigned-off-by: Dan Carpenter \u003cerror27@gmail.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "d327099a23e3d0c8ec09137e9b4b115449d4eb29", "tree": "beeb39af28a863e3e0d9e40ea3f1af5e5d05cc96", "parents": [ "4cbd1149fbcc351bdf08ab749867d157905d0d35" ], "author": { "name": "Dan Carpenter", "email": "error27@gmail.com", "time": "Sat May 29 09:46:47 2010 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Jun 11 15:57:35 2010 -0400" }, "message": "Btrfs: unwind after btrfs_start_transaction() errors\n\nThis was added by a22285a6a3: \"Btrfs: Integrate metadata reservation\nwith start_transaction\". If we goto out here then we skip all the\nunwinding and there are locks still held etc.\n\nSigned-off-by: Dan Carpenter \u003cerror27@gmail.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "d68fc57b7e3245cfacf2e3b47acfed1946a11786", "tree": "c2572fcd935017440c8370c8a12ceb49a7fc4f1f", "parents": [ "8929ecfa50f266163832eeacfbc3642ed5eb83b6" ], "author": { "name": "Yan, Zheng", "email": "zheng.yan@oracle.com", "time": "Sun May 16 10:49:58 2010 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Tue May 25 10:34:52 2010 -0400" }, "message": "Btrfs: Metadata reservation for orphan inodes\n\nreserve metadata space for handling orphan inodes\n\nSigned-off-by: Yan Zheng \u003czheng.yan@oracle.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "8929ecfa50f266163832eeacfbc3642ed5eb83b6", "tree": "e0177748af36d49d5f652cff0e421a8268cf7194", "parents": [ "0ca1f7ceb1991099ed5273885ebcf4323948c72e" ], "author": { "name": "Yan, Zheng", "email": "zheng.yan@oracle.com", "time": "Sun May 16 10:49:58 2010 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Tue May 25 10:34:52 2010 -0400" }, "message": "Btrfs: Introduce global metadata reservation\n\nReserve metadata space for extent tree, checksum tree and root tree\n\nSigned-off-by: Yan Zheng \u003czheng.yan@oracle.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "0ca1f7ceb1991099ed5273885ebcf4323948c72e", "tree": "10758d6a55c529aced177da3f6bf45cf26361913", "parents": [ "a22285a6a32390195235171b89d157ed1a1fe932" ], "author": { "name": "Yan, Zheng", "email": "zheng.yan@oracle.com", "time": "Sun May 16 10:48:47 2010 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Tue May 25 10:34:51 2010 -0400" }, "message": "Btrfs: Update metadata reservation for delayed allocation\n\nIntroduce metadata reservation context for delayed allocation\nand update various related functions.\n\nThis patch also introduces EXTENT_FIRST_DELALLOC control bit for\nset/clear_extent_bit. It tells set/clear_bit_hook whether they\nare processing the first extent_state with EXTENT_DELALLOC bit\nset. This change is important if set/clear_extent_bit involves\nmultiple extent_state.\n\nSigned-off-by: Yan Zheng \u003czheng.yan@oracle.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "a22285a6a32390195235171b89d157ed1a1fe932", "tree": "3fabc88a029e1af4f2fdcc708e7b62ef3cf3703a", "parents": [ "f0486c68e4bd9a06a5904d3eeb3a0d73a83befb8" ], "author": { "name": "Yan, Zheng", "email": "zheng.yan@oracle.com", "time": "Sun May 16 10:48:46 2010 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Tue May 25 10:34:50 2010 -0400" }, "message": "Btrfs: Integrate metadata reservation with start_transaction\n\nBesides simplify the code, this change makes sure all metadata\nreservation for normal metadata operations are released after\ncommitting transaction.\n\nChanges since V1:\n\nAdd code that check if unlink and rmdir will free space.\n\nAdd ENOSPC handling for clone ioctl.\n\nSigned-off-by: Yan Zheng \u003czheng.yan@oracle.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "18e41da89d55014d25b9a24502ee92b7f50599f9", "tree": "5ce8ebd7456f377e4cfbff0ae83e84295617a4a8", "parents": [ "43aa7ac736a4e21aae4882bd8f7c67403aed45b8", "5dc6416414fb3ec6e2825fd4d20c8bf1d7fe0395" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat May 15 12:55:31 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat May 15 12:55:31 2010 -0700" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:\n Btrfs: check for read permission on src file in the clone ioctl\n" }, { "commit": "5dc6416414fb3ec6e2825fd4d20c8bf1d7fe0395", "tree": "e15101a2d1302ff6f2830f282197b34060ec963c", "parents": [ "9f680ce04ea19dabbbafe01b57b61930a9b70741" ], "author": { "name": "Dan Rosenberg", "email": "dan.j.rosenberg@gmail.com", "time": "Sat May 15 11:27:37 2010 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Sat May 15 12:05:50 2010 -0400" }, "message": "Btrfs: check for read permission on src file in the clone ioctl\n\nThe existing code would have allowed you to clone a file that was\nonly open for writing\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "795d580baec0d5386b83a8b557df47c20810e86b", "tree": "d0387c37562e9e27a4f43cf7ae425319cbdad359", "parents": [ "449cedf099b23a250e7d61982e35555ccb871182", "109f6aef5fc436f355ad027f4d97bd696df2049a" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 05 13:21:15 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 05 13:21:15 2010 -0700" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:\n Btrfs: add check for changed leaves in setup_leaf_for_split\n Btrfs: create snapshot references in same commit as snapshot\n Btrfs: fix small race with delalloc flushing waitqueue\u0027s\n Btrfs: use add_to_page_cache_lru, use __page_cache_alloc\n Btrfs: fix chunk allocate size calculation\n Btrfs: kill max_extent mount option\n Btrfs: fail to mount if we have problems reading the block groups\n Btrfs: check btrfs_get_extent return for IS_ERR()\n Btrfs: handle kmalloc() failure in inode lookup ioctl\n Btrfs: dereferencing freed memory\n Btrfs: Simplify num_stripes\u0027s calculation logical for __btrfs_alloc_chunk()\n Btrfs: Add error handle for btrfs_search_slot() in btrfs_read_chunk_tree()\n Btrfs: Remove unnecessary finish_wait() in wait_current_trans()\n Btrfs: add NULL check for do_walk_down()\n Btrfs: remove duplicate include in ioctl.c\n\nFix trivial conflict in fs/btrfs/compression.c due to slab.h include\ncleanups.\n" }, { "commit": "6cf8bfbf5e88edfb09a2bf0631a067060f534592", "tree": "70cc8040189bcd623e72ab1f09c6dc4fb40741e5", "parents": [ "c2b96929e2ca6914cf4a66cd8fe2a34c4a98277f" ], "author": { "name": "Dan Carpenter", "email": "error27@gmail.com", "time": "Sat Mar 20 11:22:10 2010 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Tue Mar 30 21:19:09 2010 -0400" }, "message": "Btrfs: check btrfs_get_extent return for IS_ERR()\n\nbtrfs_get_extent() never returns NULL, only a valid pointer or ERR_PTR()\n\nSigned-off-by: Dan Carpenter \u003cerror27@gmail.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "c2b96929e2ca6914cf4a66cd8fe2a34c4a98277f", "tree": "acfc0f7c28305f2057e6eed88ffd8b34441ba2e1", "parents": [ "683be16eb6e19a35aca2473668652259ed074094" ], "author": { "name": "Dan Carpenter", "email": "error27@gmail.com", "time": "Sat Mar 20 11:24:15 2010 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Tue Mar 30 21:19:09 2010 -0400" }, "message": "Btrfs: handle kmalloc() failure in inode lookup ioctl\n\nReturn -ENOMEM if kmalloc() fails.\n\nSigned-off-by: Dan Carpenter \u003cerror27@gmail.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "683be16eb6e19a35aca2473668652259ed074094", "tree": "e6ed753b392a576999140ab9758db9c58dc60926", "parents": [ "f3eae7e8a5ed124bbc781e18ea10c21856017322" ], "author": { "name": "Dan Carpenter", "email": "error27@gmail.com", "time": "Sat Mar 20 11:24:48 2010 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Tue Mar 30 21:19:09 2010 -0400" }, "message": "Btrfs: dereferencing freed memory\n\nThe original code dereferenced range on the next line.\n\nSigned-off-by: Dan Carpenter \u003cerror27@gmail.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "2f3014fc2ab1e25c36531e19164c48182c168995", "tree": "84a906ae0d4c963377d768d8ec80a308122a4687", "parents": [ "8ad6fcab564c5bc956bdc3dfa440ab152b6e780f" ], "author": { "name": "Andrea Gelmini", "email": "andrea.gelmini@gelma.net", "time": "Thu Mar 25 17:22:45 2010 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Tue Mar 30 21:19:08 2010 -0400" }, "message": "Btrfs: remove duplicate include in ioctl.c\n\nfs/btrfs/ioctl.c: ctree.h is included more than once.\n\nSigned-off-by: Andrea Gelmini \u003candrea.gelmini@gelma.net\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "5a0e3ad6af8660be21ca98a971cd00f331318c05", "tree": "5bfb7be11a03176a87296a43ac6647975c00a1d1", "parents": [ "ed391f4ebf8f701d3566423ce8f17e614cde9806" ], "author": { "name": "Tejun Heo", "email": "tj@kernel.org", "time": "Wed Mar 24 17:04:11 2010 +0900" }, "committer": { "name": "Tejun Heo", "email": "tj@kernel.org", "time": "Tue Mar 30 22:02:32 2010 +0900" }, "message": "include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h\n\npercpu.h is included by sched.h and module.h and thus ends up being\nincluded when building most .c files. percpu.h includes slab.h which\nin turn includes gfp.h making everything defined by the two files\nuniversally available and complicating inclusion dependencies.\n\npercpu.h -\u003e slab.h dependency is about to be removed. Prepare for\nthis change by updating users of gfp and slab facilities include those\nheaders directly instead of assuming availability. As this conversion\nneeds to touch large number of source files, the following script is\nused as the basis of conversion.\n\n http://userweb.kernel.org/~tj/misc/slabh-sweep.py\n\nThe script does the followings.\n\n* Scan files for gfp and slab usages and update includes such that\n only the necessary includes are there. ie. if only gfp is used,\n gfp.h, if slab is used, slab.h.\n\n* When the script inserts a new include, it looks at the include\n blocks and try to put the new include such that its order conforms\n to its surrounding. It\u0027s put in the include block which contains\n core kernel includes, in the same order that the rest are ordered -\n alphabetical, Christmas tree, rev-Xmas-tree or at the end if there\n doesn\u0027t seem to be any matching order.\n\n* If the script can\u0027t find a place to put a new include (mostly\n because the file doesn\u0027t have fitting include block), it prints out\n an error message indicating which .h file needs to be added to the\n file.\n\nThe conversion was done in the following steps.\n\n1. The initial automatic conversion of all .c files updated slightly\n over 4000 files, deleting around 700 includes and adding ~480 gfp.h\n and ~3000 slab.h inclusions. The script emitted errors for ~400\n files.\n\n2. Each error was manually checked. Some didn\u0027t need the inclusion,\n some needed manual addition while adding it to implementation .h or\n embedding .c file was more appropriate for others. This step added\n inclusions to around 150 files.\n\n3. The script was run again and the output was compared to the edits\n from #2 to make sure no file was left behind.\n\n4. Several build tests were done and a couple of problems were fixed.\n e.g. lib/decompress_*.c used malloc/free() wrappers around slab\n APIs requiring slab.h to be added manually.\n\n5. The script was run on all .h files but without automatically\n editing them as sprinkling gfp.h and slab.h inclusions around .h\n files could easily lead to inclusion dependency hell. Most gfp.h\n inclusion directives were ignored as stuff from gfp.h was usually\n wildly available and often used in preprocessor macros. Each\n slab.h inclusion directive was examined and added manually as\n necessary.\n\n6. percpu.h was updated not to include slab.h.\n\n7. Build test were done on the following configurations and failures\n were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my\n distributed build env didn\u0027t work with gcov compiles) and a few\n more options had to be turned off depending on archs to make things\n build (like ipr on powerpc/64 which failed due to missing writeq).\n\n * x86 and x86_64 UP and SMP allmodconfig and a custom test config.\n * powerpc and powerpc64 SMP allmodconfig\n * sparc and sparc64 SMP allmodconfig\n * ia64 SMP allmodconfig\n * s390 SMP allmodconfig\n * alpha SMP allmodconfig\n * um on x86_64 SMP allmodconfig\n\n8. percpu.h modifications were reverted so that it could be applied as\n a separate patch and serve as bisection point.\n\nGiven the fact that I had only a couple of failures from tests on step\n6, I\u0027m fairly confident about the coverage of this conversion patch.\nIf there is a breakage, it\u0027s likely to be something in one of the arch\nheaders which should be easily discoverable easily on most builds of\nthe specific arch.\n\nSigned-off-by: Tejun Heo \u003ctj@kernel.org\u003e\nGuess-its-ok-by: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nCc: Lee Schermerhorn \u003cLee.Schermerhorn@hp.com\u003e\n" }, { "commit": "8ad6fcab564c5bc956bdc3dfa440ab152b6e780f", "tree": "38670d63e5315650f3e6efe2a2a8025e945b4743", "parents": [ "1b53ac4d1b75b23bdc2b54ace787b8f718a987ef" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Mar 18 12:23:10 2010 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Mar 18 12:23:10 2010 -0400" }, "message": "Btrfs: fix the inode ref searches done by btrfs_search_path_in_tree\n\nThis is used by the inode lookup ioctl to follow all the backrefs up\nto the subvol root. But the search being done would sometimes land one\npast the last item in the leaf instead of finding the backref.\n\nThis changes the search to look for the highest possible backref and hop\nback one item. It also fixes a leaked path on failure to find the root.\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "1b53ac4d1b75b23bdc2b54ace787b8f718a987ef", "tree": "4ba3bf8dc5159d4b382b1e44306eef1875203c6a", "parents": [ "90fdde147fd32d18a20be5b498d5f26e56cca8a3" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Mar 18 12:17:05 2010 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Mar 18 12:17:05 2010 -0400" }, "message": "Btrfs: allow treeid\u003d\u003d0 in the inode lookup ioctl\n\nWhen a root id of 0 is sent to the inode lookup ioctl, it will\nuse the root of the file we\u0027re ioctling and pass the root id\nback to userland along with the results.\n\nThis allows userland to do searches based on that root later on.\n\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "90fdde147fd32d18a20be5b498d5f26e56cca8a3", "tree": "ab861e9190145df710345bb1e54c5f3f1d77d296", "parents": [ "abc6e1341bda974e2d0eddb75f57a20ac18e9b33" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Mar 18 12:14:54 2010 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Mar 18 12:14:54 2010 -0400" }, "message": "Btrfs: return keys for large items to the search ioctl\n\nThe search ioctl was skipping large items entirely (ones that are too\nbig for the results buffer). This changes things to at least copy\nthe item header so that we can send information about the item back to\nuserland.\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "abc6e1341bda974e2d0eddb75f57a20ac18e9b33", "tree": "399e587e8e94dd4ec2894f52f377a189a21ece2a", "parents": [ "7fde62bffb576d384ea49a3aed3403d5609ee5bc" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Mar 18 12:10:08 2010 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Mar 18 12:10:08 2010 -0400" }, "message": "Btrfs: fix key checks and advance in the search ioctl\n\nThe search ioctl was working well for finding tree roots, but using it for\ngeneric searches requires a few changes to how the keys are advanced.\nThis treats the search control min fields for objectid, type and offset\nmore like a key, where we drop the offset to zero once we bump the type,\netc.\n\nThe downside of this is that we are changing the min_type and min_offset\nfields during the search, and so the ioctl caller needs extra checks to make sure\nthe keys in the result are the ones it wanted.\n\nThis also changes key_in_sk to use btrfs_comp_cpu_keys, just to make\nthings more readable.\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "7fde62bffb576d384ea49a3aed3403d5609ee5bc", "tree": "0fc0be615e657ed385835b56741c3a62c2c76fff", "parents": [ "ce769a2904bf5a9110ef534a7702397e38e2b3e9" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Tue Mar 16 15:40:10 2010 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Tue Mar 16 15:40:10 2010 -0400" }, "message": "Btrfs: buffer results in the space_info ioctl\n\nThe space_info ioctl was using copy_to_user inside rcu_read_lock. This\ncommit changes things to copy into a buffer first and then dump the\nresult down to userland.\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "854d2c3531e6d32e76b94ca5e096ea54c7497e40", "tree": "50775c23fe46b586b24294217e4eb81fbc0e8365", "parents": [ "ef5780c018ed169a77b623f87c4ba52faa8ad0fe" ], "author": { "name": "Sage Weil", "email": "sage@newdream.net", "time": "Tue Mar 16 00:02:25 2010 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Tue Mar 16 14:24:27 2010 -0400" }, "message": "Btrfs: fix search_ioctl key advance\n\nkey-\u003etype is u8, not u64.\n\nfs/btrfs/ioctl.c: In function \u0027copy_to_sk\u0027:\nfs/btrfs/ioctl.c:1024: warning: comparison is always true due to limited range of data type\n\nSigned-off-by: Sage Weil \u003csage@newdream.net\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "91748467a5c5884e44ad5cf58630c0c28474f1f6", "tree": "593f2449e069e34fe96ba0e59efa8bf71242ad46", "parents": [ "1406e4327be3a533a2b18582f715ce2cfbcf6804" ], "author": { "name": "Akinobu Mita", "email": "akinobu.mita@gmail.com", "time": "Sun Feb 28 10:59:11 2010 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Mon Mar 15 11:00:14 2010 -0400" }, "message": "btrfs: use memparse\n\nUse memparse() instead of its own private implementation.\n\nSigned-off-by: Akinobu Mita \u003cakinobu.mita@gmail.com\u003e\nCc: Chris Mason \u003cchris.mason@oracle.com\u003e\nCc: linux-btrfs@vger.kernel.org\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "1406e4327be3a533a2b18582f715ce2cfbcf6804", "tree": "40cafa639095b1a652cd013746394b7a77e52b69", "parents": [ "2ac55d41b5d6bf49e76bc85db5431240617e2f8f" ], "author": { "name": "Josef Bacik", "email": "josef@redhat.com", "time": "Wed Jan 13 18:19:06 2010 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Mon Mar 15 11:00:14 2010 -0400" }, "message": "Btrfs: add a \"df\" ioctl for btrfs\n\ndf is a very loaded question in btrfs. This gives us a way to get the per-space\nusage information so we can tell exactly what is in use where. This will help\nus figure out ENOSPC problems, and help users better understand where their disk\nspace is going.\n\nSigned-off-by: Josef Bacik \u003cjosef@redhat.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "2ac55d41b5d6bf49e76bc85db5431240617e2f8f", "tree": "ee8e2a716ef0b50388ef5e4a86387ec0499bca89", "parents": [ "5a1a3df1f6c86926cfe8657e6f9b4b4c2f467d60" ], "author": { "name": "Josef Bacik", "email": "josef@redhat.com", "time": "Wed Feb 03 19:33:23 2010 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Mon Mar 15 11:00:13 2010 -0400" }, "message": "Btrfs: cache the extent state everywhere we possibly can V2\n\nThis patch just goes through and fixes everybody that does\n\nlock_extent()\nblah\nunlock_extent()\n\nto use\n\nlock_extent_bits()\nblah\nunlock_extent_cached()\n\nand pass around a extent_state so we only have to do the searches once per\nfunction. This gives me about a 3 mb/s boots on my random write test. I have\nnot converted some things, like the relocation and ioctl\u0027s, since they aren\u0027t\nheavily used and the relocation stuff is in the middle of being re-written. I\nalso changed the clear_extent_bit() to only unset the cached state if we are\nclearing EXTENT_LOCKED and related stuff, so we can do things like this\n\nlock_extent_bits()\nclear delalloc bits\nunlock_extent_cached()\n\nwithout losing our cached state. I tested this thoroughly and turned on\nLEAK_DEBUG to make sure we weren\u0027t leaking extent states, everything worked out\nfine.\n\nSigned-off-by: Josef Bacik \u003cjosef@redhat.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "1e701a3292e25a6c4939cad9f24951dc6b6ad853", "tree": "899887a99aae82fe113bffedccb90a76e5473f8b", "parents": [ "940100a4a7b78b27e60a3e72340fb9b5397dcdb2" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Mar 11 09:42:04 2010 -0500" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Mon Mar 15 11:00:10 2010 -0400" }, "message": "Btrfs: add new defrag-range ioctl.\n\nThe btrfs defrag ioctl was limited to doing the entire file. This\ncommit adds a new interface that can defrag a specific range inside\nthe file.\n\nIt can also force compression on the file, allowing you to selectively\ncompress individual files after they were created, even when mount -o\ncompress isn\u0027t turned on.\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "940100a4a7b78b27e60a3e72340fb9b5397dcdb2", "tree": "8eec3d4a95cbc530ddaa82f0d2848e14519eec2a", "parents": [ "51684082b11c304829ea22193d4d96a5b1663b97" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Wed Mar 10 10:52:59 2010 -0500" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Mon Mar 15 11:00:10 2010 -0400" }, "message": "Btrfs: be more selective in the defrag ioctl\n\nThe btrfs defrag ioctl had some bugs around delalloc accounting, and it\nwasn\u0027t properly skipping pages that were not in the mapping.\n\nIt wasn\u0027t properly clearing the page checked flag, which could make the\nwriteback code ignore the page forever while pinning it as dirty.\n\nThis commit fixes those problems and makes defrag a little smarter. It\nskips holes and it doesn\u0027t waste time defragging large extents. If a\ntiny extent comes before a very large extent, it will defrag both of\nthem to make sure the tiny extent ends up next to something big.\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "6ef5ed0d386be5c43ec66d6f2999919c0893558b", "tree": "7ec391a0525506eb03bcbb0b5e19709f530b0b74", "parents": [ "73f73415caddbc01d9f10c03e0a677d5b3d11569" ], "author": { "name": "Josef Bacik", "email": "josef@redhat.com", "time": "Fri Dec 11 21:11:29 2009 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Mon Mar 15 11:00:08 2010 -0400" }, "message": "Btrfs: add ioctl and incompat flag to set the default mount subvol\n\nThis patch needs to go along with my previous patch. This lets us set the\ndefault dir item\u0027s location to whatever root we want to use as our default\nmounting subvol. With this we don\u0027t have to use mount -o subvol\u003d\u003ctree id\u003e\nanymore to mount a different subvol, we can just set the new one and it will\njust magically work. I\u0027ve done some moderate testing with this, mostly just\nswitching the default mount around, mounting subvols and the default mount at\nthe same time and such, everything seems to work. Thanks,\n\nOlder kernels would generally be able to still mount the filesystem with the\ndefault subvolume set, but it would result in a different volume being mounted,\nwhich could be an even more unpleasant suprise for users. So if you set your\ndefault subvolume, you can\u0027t go back to older kernels. Thanks,\n\nSigned-off-by: Josef Bacik \u003cjosef@redhat.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "ac8e9819d71f907a0532b01b22c26b56bbbcbd21", "tree": "5bdebf68182139e664b59286f6f7071e3ada2b18", "parents": [ "98d377a0894e6bcca44eafd4d2eee74e8af4db83" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Sun Feb 28 15:39:26 2010 -0500" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Mon Mar 15 10:55:10 2010 -0400" }, "message": "Btrfs: add search and inode lookup ioctls\n\nThe search ioctl is a generic tool for doing btree searches from\nuserland applications. The first user of the search ioctl is a\nsubvolume listing feature, but we\u0027ll also use it to find new\nfiles in a subvolume.\n\nThe search ioctl allows you to specify min and max keys to search for,\nalong with min and max transid. It returns the items along with a\nheader that includes the item key.\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "98d377a0894e6bcca44eafd4d2eee74e8af4db83", "tree": "02b1b926812a8852397c7c6cd274943c59c65f4b", "parents": [ "da495ecc0fb096b383754952a1c152147bc95b52" ], "author": { "name": "TARUISI Hiroaki", "email": "taruishi.hiroak@jp.fujitsu.com", "time": "Wed Nov 18 05:42:14 2009 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Mon Mar 15 10:55:09 2010 -0400" }, "message": "Btrfs: add a function to lookup a directory path by following backrefs\n\nThis will be used by the inode lookup ioctl.\n\nSigned-off-by: TARUISI Hiroaki \u003ctaruishi.hiroak@jp.fujitsu.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "86b9f2eca5e0984145e3c7698a7cd6dd65c2a93f", "tree": "75dd0a52848b6f5396023f811f1a602f62b9d34e", "parents": [ "55ef68990029fcd8d04d42fc184aa7fb18cf309e" ], "author": { "name": "Yan, Zheng", "email": "zheng.yan@oracle.com", "time": "Thu Nov 12 09:36:50 2009 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Dec 17 12:33:35 2009 -0500" }, "message": "Btrfs: Fix per root used space accounting\n\nThe bytes_used field in root item was originally planned to\ntrace the amount of used data and tree blocks. But it never\nworked right since we can\u0027t trace freeing of data accurately.\nThis patch changes it to only trace the amount of tree blocks.\n\nSigned-off-by: Yan Zheng \u003czheng.yan@oracle.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "2e4bfab97055aa6acdd0637913bd705c2d6506d6", "tree": "2c07c3668c8d13ee1e2076d32a728c60eaa8f4ed", "parents": [ "c71bf099abddf3e0fdc27f251ba76fca1461d49a" ], "author": { "name": "Yan, Zheng", "email": "zheng.yan@oracle.com", "time": "Thu Nov 12 09:37:02 2009 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Dec 17 12:33:33 2009 -0500" }, "message": "Btrfs: Avoid orphan inodes cleanup during committing transaction\n\nbtrfs_lookup_dentry may trigger orphan cleanup, so it\u0027s not good\nto call it while committing a transaction.\n\nSigned-off-by: Yan Zheng \u003czheng.yan@oracle.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "920bbbfb05c9fce22e088d20eb9dcb8f96342de9", "tree": "b972b3f39ebefb9c026300c1981d18cad769e431", "parents": [ "ad48fd754676bfae4139be1a897b1ea58f9aaf21" ], "author": { "name": "Yan, Zheng", "email": "zheng.yan@oracle.com", "time": "Thu Nov 12 09:34:08 2009 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Tue Dec 15 21:24:52 2009 -0500" }, "message": "Btrfs: Rewrite btrfs_drop_extents\n\nRewrite btrfs_drop_extents by using btrfs_duplicate_item, so we can\navoid calling lock_extent within transaction.\n\nSigned-off-by: Yan Zheng \u003czheng.yan@oracle.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "ac6889cbb254be1ffea376bea4a96ce9be0e0ed0", "tree": "8f0e073af940b1bdfb134b945a03a1b43b614352", "parents": [ "e9061e214810c9534381a705a1b46533e09f2676" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Oct 09 11:29:53 2009 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Oct 09 11:29:53 2009 -0400" }, "message": "Btrfs: fix file clone ioctl for bookend extents\n\nThe file clone ioctl was incorrectly taking the offset into the\nextent on disk into account when calculating the length of the\ncloned extent.\n\nThe length never changes based on the offset into the physical extent.\n\nTest case:\n\nfallocate -l 1g image\nmke2fs image\nbcp image image2\ne2fsck -f image2\n\n(errors on image2)\n\nThe math bug ends up wrapping the length of the extent, and things\ngo wrong from there.\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "efefb1438be269897585934fc6c05deb4dfa01ce", "tree": "41d3bf63789bc656421dfbd651bf38caf580ec03", "parents": [ "ff782e0a131c7f669445c07fe5c7ba91e043b7ed" ], "author": { "name": "Yan, Zheng", "email": "zheng.yan@oracle.com", "time": "Fri Oct 09 09:25:16 2009 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Oct 09 09:25:16 2009 -0400" }, "message": "Btrfs: remove negative dentry when deleting subvolumne\n\nThe use of btrfs_dentry_delete is removing dentries from the\ndcache when deleting subvolumne. btrfs_dentry_delete ignores\nnegative dentries. This is incorrect since if we don\u0027t remove\nthe negative dentry, its parent dentry can\u0027t be removed.\n\nSigned-off-by: Yan Zheng \u003czheng.yan@oracle.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "1ab86aedbc7845a946b4ba4edf37762629970708", "tree": "1a3ad19d12a807d76d5700abc6415e1535c88312", "parents": [ "3baf0bed0a5adab95c7599d2f27124c74692ef28" ], "author": { "name": "Sage Weil", "email": "sage@newdream.net", "time": "Tue Sep 29 18:38:44 2009 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Tue Sep 29 18:38:44 2009 -0400" }, "message": "Btrfs: fix error cases for ioctl transactions\n\nFix leak of vfsmount write reference and open_ioctl_trans reference on\nENOMEM. Clean up the error paths while we\u0027re at it.\n\nSigned-off-by: Sage Weil \u003csage@newdream.net\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "9ed74f2dba6ebf9f30b80554290bfc73cc3ef083", "tree": "763d58a4a11ceca26dcdaedefb1fd662c4e2fa8b", "parents": [ "c65ddb52dc412c9b67681b1aa16cd1bac8434e24" ], "author": { "name": "Josef Bacik", "email": "josef@redhat.com", "time": "Fri Sep 11 16:12:44 2009 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Mon Sep 28 16:29:42 2009 -0400" }, "message": "Btrfs: proper -ENOSPC handling\n\nAt the start of a transaction we do a btrfs_reserve_metadata_space() and\nspecify how many items we plan on modifying. Then once we\u0027ve done our\nmodifications and such, just call btrfs_unreserve_metadata_space() for\nthe same number of items we reserved.\n\nFor keeping track of metadata needed for data I\u0027ve had to add an extent_io op\nfor when we merge extents. This lets us track space properly when we are doing\nsequential writes, so we don\u0027t end up reserving way more metadata space than\nwhat we need.\n\nThe only place where the metadata space accounting is not done is in the\nrelocation code. This is because Yan is going to be reworking that code in the\nnear future, so running btrfs-vol -b could still possibly result in a ENOSPC\nrelated panic. This patch also turns off the metadata_ratio stuff in order to\nallow users to more efficiently use their disk space.\n\nThis patch makes it so we track how much metadata we need for an inode\u0027s\ndelayed allocation extents by tracking how many extents are currently\nwaiting for allocation. It introduces two new callbacks for the\nextent_io tree\u0027s, merge_extent_hook and split_extent_hook. These help\nus keep track of when we merge delalloc extents together and split them\nup. Reservations are handled prior to any actually dirty\u0027ing occurs,\nand then we unreserve after we dirty.\n\nbtrfs_unreserve_metadata_for_delalloc() will make the appropriate\nunreservations as needed based on the number of reservations we\ncurrently have and the number of extents we currently have. Doing the\nreservation outside of doing any of the actual dirty\u0027ing lets us do\nthings like filemap_flush() the inode to try and force delalloc to\nhappen, or as a last resort actually start allocation on all delalloc\ninodes in the fs. This has survived dbench, fs_mark and an fsx torture\ntest.\n\nSigned-off-by: Josef Bacik \u003cjbacik@redhat.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "1fb58a6051cd904a9f8e0344b22e31921d6b5a4d", "tree": "2f8c1a89b3e4f119590e89cebe1a5be1a02f487a", "parents": [ "76dda93c6ae2c1dc3e6cde34569d6aca26b0c918" ], "author": { "name": "Sage Weil", "email": "sage@newdream.net", "time": "Mon Sep 21 16:00:27 2009 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Mon Sep 21 16:00:27 2009 -0400" }, "message": "Btrfs: fix arithmetic error in clone ioctl\n\nFix an arithmetic error that was breaking extents cloned via the clone\nioctl starting in the second half of a file.\n\nSigned-off-by: Sage Weil \u003csage@newdream.net\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "76dda93c6ae2c1dc3e6cde34569d6aca26b0c918", "tree": "f5ca46ec89d4ae2c762952d5f35e2c6f95ac046a", "parents": [ "4df27c4d5cc1dda54ed7d0a8389347f2df359cf9" ], "author": { "name": "Yan, Zheng", "email": "zheng.yan@oracle.com", "time": "Mon Sep 21 16:00:26 2009 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Mon Sep 21 16:00:26 2009 -0400" }, "message": "Btrfs: add snapshot/subvolume destroy ioctl\n\nThis patch adds snapshot/subvolume destroy ioctl. A subvolume that isn\u0027t being\nused and doesn\u0027t contains links to other subvolumes can be destroyed.\n\nSigned-off-by: Yan Zheng \u003czheng.yan@oracle.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "4df27c4d5cc1dda54ed7d0a8389347f2df359cf9", "tree": "2008f348d28c6c19e31924ae4fb414ca929a01f1", "parents": [ "13a8a7c8c47e542b3cdb45bec3f431f96af79361" ], "author": { "name": "Yan, Zheng", "email": "zheng.yan@oracle.com", "time": "Mon Sep 21 15:56:00 2009 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Mon Sep 21 15:56:00 2009 -0400" }, "message": "Btrfs: change how subvolumes are organized\n\nbtrfs allows subvolumes and snapshots anywhere in the directory tree.\nIf we snapshot a subvolume that contains a link to other subvolume\ncalled subvolA, subvolA can be accessed through both the original\nsubvolume and the snapshot. This is similar to creating hard link to\ndirectory, and has the very similar problems.\n\nThe aim of this patch is enforcing there is only one access point to\neach subvolume. Only the first directory entry (the one added when\nthe subvolume/snapshot was created) is treated as valid access point.\nThe first directory entry is distinguished by checking root forward\nreference. If the corresponding root forward reference is missing,\nwe know the entry is not the first one.\n\nThis patch also adds snapshot/subvolume rename support, the code\nallows rename subvolume link across subvolumes.\n\nSigned-off-by: Yan Zheng \u003czheng.yan@oracle.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "83ebade34bc1a90d0c3f77b87b940f336d075fda", "tree": "99b6366c52e6bec88119ae995399c985fc61e900", "parents": [ "74fca6a42863ffacaf7ba6f1936a9f228950f657", "93c82d575055f1bd0277acae6f966bebafd80dd5" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Sep 11 19:07:25 2009 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Sep 11 19:07:25 2009 -0400" }, "message": "Merge branch \u0027master\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable\n" }, { "commit": "a1ed835e1ab5795f91b198d08c43e2f56848dcf3", "tree": "ac3b370823fa76c5be7698e3663306badbbd622d", "parents": [ "8b62b72b26bcd72082c4a69d179dd906bcc22200" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Sep 11 12:27:37 2009 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Sep 11 13:31:07 2009 -0400" }, "message": "Btrfs: Fix extent replacment race\n\nData COW means that whenever we write to a file, we replace any old\nextent pointers with new ones. There was a window where a readpage\nmight find the old extent pointers on disk and cache them in the\nextent_map tree in ram in the middle of a given write replacing them.\n\nEven though both the readpage and the write had their respective bytes\nin the file locked, the extent readpage inserts may cover more bytes than\nit had locked down.\n\nThis commit closes the race by keeping the new extent pinned in the extent\nmap tree until after the on-disk btree is properly setup with the new\nextent pointers.\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "405f55712dfe464b3240d7816cc4fe4174831be2", "tree": "96c425ea7fa8b31058b8f83a433c5e5265c8ebc7", "parents": [ "f9fabcb58a6d26d6efde842d1703ac7cfa9427b6" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Sat Jul 11 22:08:37 2009 +0400" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Jul 12 12:22:34 2009 -0700" }, "message": "headers: smp_lock.h redux\n\n* Remove smp_lock.h from files which don\u0027t need it (including some headers!)\n* Add smp_lock.h to files which do need it\n* Make smp_lock.h include conditional in hardirq.h\n It\u0027s needed only for one kernel_locked() usage which is under CONFIG_PREEMPT\n\n This will make hardirq.h inclusion cheaper for every PREEMPT\u003dn config\n (which includes allmodconfig/allyesconfig, BTW)\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c8a894d77de4a1e0a544577fd4eabc9aacd453a8", "tree": "536f2a4d775f3b4180a85d4192bae92fbd38347b", "parents": [ "f597bb19ccd034cbcf05e1194238e2c8d9505a8a" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Sat Jun 27 21:07:03 2009 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Jul 02 13:41:16 2009 -0400" }, "message": "Btrfs: fix the file clone ioctl for preallocated extents\n" }, { "commit": "0b4dcea579a1b6f4d249d61f5bc8adeaa7c895d8", "tree": "2d8c0a56d853516136fcf9ff43672aca9f011057", "parents": [ "067c28adc53807514ac0c6ebb6af3243cbd071fa" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Jun 11 11:13:35 2009 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Jun 11 11:13:35 2009 -0400" }, "message": "Btrfs: fix oops when btrfs_inherit_iflags called with a NULL dir\n\nThis happens during subvol creation.\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "6cbff00f4632c8060b06bfc9585805217f11e12e", "tree": "1886c4c855662172b84be2bfbd2aa5ac6a5c429d", "parents": [ "c289811cc096c57ff35550ee8132793a4f9b5b59" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Fri Apr 17 10:37:41 2009 +0200" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Wed Jun 10 11:29:52 2009 -0400" }, "message": "Btrfs: implement FS_IOC_GETFLAGS/SETFLAGS/GETVERSION\n\nAdd support for the standard attributes set via chattr and read via\nlsattr. Currently we store the attributes in the flags value in\nthe btrfs inode, but I wonder whether we should split it into two so\nthat we don\u0027t have to keep converting between the two formats.\n\nRemove the btrfs_clear_flag/btrfs_set_flag/btrfs_test_flag macros\nas they were confusing the existing code and got in the way of the\nnew additions.\n\nAlso add the FS_IOC_GETVERSION ioctl for getting i_generation as it\u0027s\ntrivial.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "5d4f98a28c7d334091c1b7744f48a1acdd2a4ae0", "tree": "c611d7d824cbcdb777dd2d8e33e2ed1c5df8a9c6", "parents": [ "5c939df56c3ea018b58e5aa76181284c2053d699" ], "author": { "name": "Yan Zheng", "email": "zheng.yan@oracle.com", "time": "Wed Jun 10 10:45:14 2009 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Wed Jun 10 11:29:46 2009 -0400" }, "message": "Btrfs: Mixed back reference (FORWARD ROLLING FORMAT CHANGE)\n\nThis commit introduces a new kind of back reference for btrfs metadata.\nOnce a filesystem has been mounted with this commit, IT WILL NO LONGER\nBE MOUNTABLE BY OLDER KERNELS.\n\nWhen a tree block in subvolume tree is cow\u0027d, the reference counts of all\nextents it points to are increased by one. At transaction commit time,\nthe old root of the subvolume is recorded in a \"dead root\" data structure,\nand the btree it points to is later walked, dropping reference counts\nand freeing any blocks where the reference count goes to 0.\n\nThe increments done during cow and decrements done after commit cancel out,\nand the walk is a very expensive way to go about freeing the blocks that\nare no longer referenced by the new btree root. This commit reduces the\ntransaction overhead by avoiding the need for dead root records.\n\nWhen a non-shared tree block is cow\u0027d, we free the old block at once, and the\nnew block inherits old block\u0027s references. When a tree block with reference\ncount \u003e 1 is cow\u0027d, we increase the reference counts of all extents\nthe new block points to by one, and decrease the old block\u0027s reference count by\none.\n\nThis dead tree avoidance code removes the need to modify the reference\ncounts of lower level extents when a non-shared tree block is cow\u0027d.\nBut we still need to update back ref for all pointers in the block.\nThis is because the location of the block is recorded in the back ref\nitem.\n\nWe can solve this by introducing a new type of back ref. The new\nback ref provides information about pointer\u0027s key, level and in which\ntree the pointer lives. This information allow us to find the pointer\nby searching the tree. The shortcoming of the new back ref is that it\nonly works for pointers in tree blocks referenced by their owner trees.\n\nThis is mostly a problem for snapshots, where resolving one of these\nfuzzy back references would be O(number_of_snapshots) and quite slow.\nThe solution used here is to use the fuzzy back references in the common\ncase where a given tree block is only referenced by one root,\nand use the full back references when multiple roots have a reference\non a given block.\n\nThis commit adds per subvolume red-black tree to keep trace of cached\ninodes. The red-black tree helps the balancing code to find cached\ninodes whose inode numbers within a given range.\n\nThis commit improves the balancing code by introducing several data\nstructures to keep the state of balancing. The most important one\nis the back ref cache. It caches how the upper level tree blocks are\nreferenced. This greatly reduce the overhead of checking back ref.\n\nThe improved balancing code scales significantly better with a large\nnumber of snapshots.\n\nThis is a very large commit and was written in a number of\npieces. But, they depend heavily on the disk format change and were\nsquashed together to make sure git bisect didn\u0027t end up in a\nbad state wrt space balancing or the format change.\n\nSigned-off-by: Yan Zheng \u003czheng.yan@oracle.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "5732c468495effd3089c1c893f3eba9a8a1d373c", "tree": "6cb79b79acde60efd82af296fd312569034d5a58", "parents": [ "45d447406a19cbfd42720f066f156f4eb9d68801", "9f55684c2d9869e8cc53595a3fee679958511cfb" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 14 19:18:44 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 14 19:18:44 2009 -0700" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:\n Btrfs: Spelling fix in btrfs_lookup_first_block_group comments\n Btrfs: make show_options result match actual option names\n Btrfs: remove outdated comment in btrfs_ioctl_resize()\n Btrfs: remove some WARN_ONs in the IO failure path\n Btrfs: Don\u0027t loop forever on metadata IO failures\n Btrfs: init inode ordered_data_close flag properly\n" }, { "commit": "5d847a8ed970d17e2734ff9e07a74fe36cceb24e", "tree": "3712028cb17a52b773ee626bda51ba6dc349d2a5", "parents": [ "cc7b0c9b701a079016183f3546b4d720194b367f" ], "author": { "name": "Li Hong", "email": "lihong.hi@gmail.com", "time": "Thu May 14 13:52:21 2009 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu May 14 14:00:33 2009 -0400" }, "message": "Btrfs: remove outdated comment in btrfs_ioctl_resize()\n\nIn Li Zefan\u0027s commit dae7b665cf6d6e6e733f1c9c16cf55547dd37e33,\na combination call of kmalloc() and copy_from_user() is replaced by\nmemdup_user(). So btrfs_ioctl_resize() doesn\u0027t use GFP_NOFS any more.\n\nSigned-off-by: Li Hong \u003clihong.hi@gmail.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "4ebf66233798347a73b01da5d30d5d2c0ef39f56", "tree": "3aae053ccbf3b6206fe6d17e62172559d35a7711", "parents": [ "14b6084daa61bfd4da926f63e6e8bd0b6de87ad9", "46a53cca826e71effe59e3cb4f383622c33ebdcb" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 27 11:16:33 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 27 11:16:33 2009 -0700" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:\n Btrfs: look for acls during btrfs_read_locked_inode\n Btrfs: fix acl caching\n Btrfs: Fix a bunch of printk() warnings.\n Btrfs: Fix a trivial warning using max() of u64 vs ULL.\n Btrfs: remove unused btrfs_bit_radix slab\n Btrfs: ratelimit IO error printks\n Btrfs: remove #if 0 code\n Btrfs: When shrinking, only update disk size on success\n Btrfs: fix deadlocks and stalls on dead root removal\n Btrfs: fix fallocate deadlock on inode extent lock\n Btrfs: kill btrfs_cache_create\n Btrfs: don\u0027t export symbols\n Btrfs: simplify makefile\n Btrfs: try to keep a healthy ratio of metadata vs data block groups\n" }, { "commit": "21380931eb4da4e29ac663d0221581282cbba208", "tree": "fa8c2155784ccb0ee996e52e75d1e04b79cf2560", "parents": [ "e63b6a6c0ffa2ebd8617cc1a10969000296831aa" ], "author": { "name": "Joel Becker", "email": "joel.becker@oracle.com", "time": "Tue Apr 21 12:38:29 2009 -0700" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Mon Apr 27 08:37:49 2009 -0400" }, "message": "Btrfs: Fix a bunch of printk() warnings.\n\nJust happened to notice a bunch of %llu vs u64 warnings. Here\u0027s a patch\nto cast them all.\n\nSigned-off-by: Joel Becker \u003cjoel.becker@oracle.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "e980b50cda1610f1c17978d9b7fd311a9dd93877", "tree": "a5ab72fa4b791758e25fd6ece6f1aedd29954e7b", "parents": [ "9601e3f6336f6ca66929f451b1f66085e68e36e3" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Apr 24 14:39:24 2009 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Apr 24 15:46:05 2009 -0400" }, "message": "Btrfs: fix fallocate deadlock on inode extent lock\n\nThe btrfs fallocate call takes an extent lock on the entire range\nbeing fallocated, and then runs through insert_reserved_extent on each\nextent as they are allocated.\n\nThe problem with this is that btrfs_drop_extents may decide to try\nand take the same extent lock fallocate was already holding. The solution\nused here is to push down knowledge of the range that is already locked\ngoing into btrfs_drop_extents.\n\nIt turns out that at least one other caller had the same bug.\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "dae7b665cf6d6e6e733f1c9c16cf55547dd37e33", "tree": "ab7f9fc54bcf735c7f331f78858ec0db7f634cdd", "parents": [ "3939fcde24473dc09ce16e922c88df9b3bee45d9" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Wed Apr 08 15:06:54 2009 +0800" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Apr 20 23:02:50 2009 -0400" }, "message": "btrfs: use memdup_user()\n\nRemove open-coded memdup_user().\n\nNote this changes some GFP_NOFS to GFP_KERNEL, since copy_from_user() may\ncause pagefault, it\u0027s pointless to pass GFP_NOFS to kmalloc().\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "ce3b0f8d5c2203301fc87f3aaaed73e5819e2a48", "tree": "ab952affafe18e604f6aaf6b13315b9435588e60", "parents": [ "f1191b50ec11c8e2ca766d6d99eb5bb9d2c084a3" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sun Mar 29 19:08:22 2009 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Mar 31 23:00:26 2009 -0400" }, "message": "New helper - current_umask()\n\ncurrent-\u003efs-\u003eumask is what most of fs_struct users are doing.\nPut that into a helper function.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "6a63209fc02d5483371f07e4913ee8abad608051", "tree": "7595e0df452928b677b66a64baf0cb3b7ec53dfc", "parents": [ "2cfbd50b536c878e58ab3681c4e944fa3d99b415" ], "author": { "name": "Josef Bacik", "email": "jbacik@redhat.com", "time": "Fri Feb 20 11:00:09 2009 -0500" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Feb 20 11:00:09 2009 -0500" }, "message": "Btrfs: add better -ENOSPC handling\n\nThis is a step in the direction of better -ENOSPC handling. Instead of\nchecking the global bytes counter we check the space_info bytes counters to\nmake sure we have enough space.\n\nIf we don\u0027t we go ahead and try to allocate a new chunk, and then if that fails\nwe return -ENOSPC. This patch adds two counters to btrfs_space_info,\nbytes_delalloc and bytes_may_use.\n\nbytes_delalloc account for extents we\u0027ve actually setup for delalloc and will\nbe allocated at some point down the line. \n\nbytes_may_use is to keep track of how many bytes we may use for delalloc at\nsome point. When we actually set the extent_bit for the delalloc bytes we\nsubtract the reserved bytes from the bytes_may_use counter. This keeps us from\nnot actually being able to allocate space for any delalloc bytes.\n\nSigned-off-by: Josef Bacik \u003cjbacik@redhat.com\u003e\n\n\n\n\n" }, { "commit": "7eaebe7d503c3ef240ac7b3efc5433fe647c0298", "tree": "6e54b7766559555d3a4e205a0524a4df02f6cf5b", "parents": [ "070604040b86511cc2df0f25f98e26c5529bd928" ], "author": { "name": "Huang Weiyi", "email": "weiyi.huang@gmail.com", "time": "Wed Jan 21 10:49:16 2009 -0500" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Wed Jan 21 10:49:16 2009 -0500" }, "message": "Btrfs: removed unused #include \u003cversion.h\u003e\u0027s\n\nRemoved unused #include \u003cversion.h\u003e\u0027s in btrfs\n\nSigned-off-by: Huang Weiyi \u003cweiyi.huang@gmail.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n\n" }, { "commit": "d397712bcc6a759a560fd247e6053ecae091f958", "tree": "9da8daebb870d8b8b1843507c4621715e23dd31a", "parents": [ "1f3c79a28c8837e8572b98f6d14142d9a6133c56" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Mon Jan 05 21:25:51 2009 -0500" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Mon Jan 05 21:25:51 2009 -0500" }, "message": "Btrfs: Fix checkpatch.pl warnings\n\nThere were many, most are fixed now. struct-funcs.c generates some warnings\nbut these are bogus.\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "52c2617990fed072220708d6b771dc10f37547b0", "tree": "6f97a07b56927bc96fabb0669cd31d0d0d28273a", "parents": [ "e441d54de4fd97dd381f3e73636f5ba51ff4c7d9" ], "author": { "name": "Yan Zheng", "email": "zheng.yan@oracle.com", "time": "Mon Jan 05 15:43:43 2009 -0500" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Mon Jan 05 15:43:43 2009 -0500" }, "message": "Btrfs: update directory\u0027s size when creating subvol/snapshot\n\nMake sure directory\u0027s size properly updated when creating\nsubvol/snapshot.\n\nSigned-off-by: Yan Zheng \u003czheng.yan@oracle.com\u003e\n\n" }, { "commit": "e441d54de4fd97dd381f3e73636f5ba51ff4c7d9", "tree": "b0d664ffaa89cec80e6aaac11977c7f6aa92ff63", "parents": [ "b34b086c1c1d934c5314d46ba25ccfa9acc471ae" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Mon Jan 05 16:57:23 2009 -0500" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Mon Jan 05 16:57:23 2009 -0500" }, "message": "Btrfs: add permission checks to the ioctls\n\nOnly root can add/remove devices\nOnly root can defrag subtrees\nOnly files open for writing can be defragged\nOnly files open for writing can be the destination for a clone\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "ab67b7c1f780a8a321fe7ee49117775009350fb3", "tree": "35a7ac2e5f641d8f11d472d7f84601d16f4fcddc", "parents": [ "b16281c30c841c6d999ff36c8d903f42a69315f2" ], "author": { "name": "Yan Zheng", "email": "zheng.yan@oracle.com", "time": "Fri Dec 19 10:58:39 2008 -0500" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Dec 19 10:58:39 2008 -0500" }, "message": "Btrfs: Add missing mnt_drop_write in ioctl.c\n\nThis patch adds the missing mnt_drop_write to match\nmnt_want_write in btrfs_ioctl_defrag and btrfs_ioctl_clone\n\nSigned-off-by: Yan Zheng \u003czheng.yan@oracle.com\u003e\n\n" }, { "commit": "d2fb3437e4d8d12c73c587615ad187d5288547ec", "tree": "894e4c698970dd35226b2614b8a38fb8a96580e7", "parents": [ "cfc8ea87201dc9bb6aeb3fc80c61abee83e7cc06" ], "author": { "name": "Yan Zheng", "email": "zheng.yan@oracle.com", "time": "Thu Dec 11 16:30:39 2008 -0500" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Dec 11 16:30:39 2008 -0500" }, "message": "Btrfs: fix leaking block group on balance\n\nThe block group structs are referenced in many different\nplaces, and it\u0027s not safe to free while balancing. So, those block\ngroup structs were simply leaked instead.\n\nThis patch replaces the block group pointer in the inode with the starting byte\noffset of the block group and adds reference counting to the block group\nstruct.\n\nSigned-off-by: Yan Zheng \u003czheng.yan@oracle.com\u003e\n\n" }, { "commit": "cfc8ea87201dc9bb6aeb3fc80c61abee83e7cc06", "tree": "51c204175bf806abc180badd691aa909e2d61fcf", "parents": [ "0403e47ee26f26e960ee9038552bc89df4a1fb3d" ], "author": { "name": "Sage Weil", "email": "sage@newdream.net", "time": "Thu Dec 11 16:30:06 2008 -0500" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Dec 11 16:30:06 2008 -0500" }, "message": "Btrfs: mnt_drop_write in ioctl_trans_end\n\nAdd missing mnt_drop_write to match the mnt_want_write in\nbtrfs_ioctl_trans_start.\n\nSigned-off-by: Sage Weil \u003csage@newdream.net\u003e\n\n" } ], "next": "d20f7043fa65659136c1a7c3c456eeeb5c6f431f" }