)]}' { "log": [ { "commit": "1acc9309eb2674533944f48dbaaa53e7750e3947", "tree": "255f346c01a33906b612852d5fb008da1f4520da", "parents": [ "c2d197e82b6267fd3338f3fbcb12750ca9f5abda", "149e2d76b4886c4c7ff5e077646a8ba3563c8026" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jul 08 23:25:45 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jul 08 23:25:45 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: fix oops when doing space balance\n Btrfs: don\u0027t panic if we get an error while balancing V2\n btrfs: add missing options displayed in mount output\n" }, { "commit": "0942caa373c676dca614ea8352ac77e0270aba73", "tree": "0a6a1bdceeb030566fcba6a6bfa322eb79f2d8d9", "parents": [ "2f7e33d432d097a2a7f467b031bf18be91cb3d49" ], "author": { "name": "David Sterba", "email": "dsterba@suse.cz", "time": "Tue Jun 28 15:10:37 2011 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Wed Jul 06 18:46:43 2011 -0400" }, "message": "btrfs: add missing options displayed in mount output\n\nThere are three missed mount options settable by user which are not\ncurrently displayed in mount output.\n\nSigned-off-by: David Sterba \u003cdsterba@suse.cz\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "8397345172aa5cdcbc133977af9d525f45b874ea", "tree": "9b1077a62bbe06d20f1e49d1aa842db0435be085", "parents": [ "59c5f46fbe01a00eedf54a23789634438bb80603", "e6bc45d65df8599fdbae73be9cec4ceed274db53" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jun 07 18:36:59 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jun 07 18:36:59 2011 -0700" }, "message": "Merge branch \u0027for-linus-2\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6\n\n* \u0027for-linus-2\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:\n vfs: make unlink() and rmdir() return ENOENT in preference to EROFS\n lmLogOpen() broken failure exit\n usb: remove bad dput after dentry_unhash\n more conservative S_NOSEC handling\n" }, { "commit": "e6ece70732b905742ad91a7b5489e0ca1362c0cd", "tree": "1ded331dec1886cf5b30bd6c6181787b8f237008", "parents": [ "23c79d31a3dd2602ee1a5ff31303b2d7a2d3c159", "aa0467d8d2a00e75b2bb6a56a4ee6d70c5d1928f" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Jun 05 06:17:23 2011 +0900" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Jun 05 06:17:23 2011 +0900" }, "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: (25 commits)\n btrfs: fix uninitialized variable warning\n btrfs: add helper for fs_info-\u003eclosing\n Btrfs: add mount -o inode_cache\n btrfs: scrub: add explicit plugging\n btrfs: use btrfs_ino to access inode number\n Btrfs: don\u0027t save the inode cache if we are deleting this root\n btrfs: false BUG_ON when degraded\n Btrfs: don\u0027t save the inode cache in non-FS roots\n Btrfs: make sure we don\u0027t overflow the free space cache crc page\n Btrfs: fix uninit variable in the delayed inode code\n btrfs: scrub: don\u0027t reuse bios and pages\n Btrfs: leave spinning on lookup and map the leaf\n Btrfs: check for duplicate entries in the free space cache\n Btrfs: don\u0027t try to allocate from a block group that doesn\u0027t have enough space\n Btrfs: don\u0027t always do readahead\n Btrfs: try not to sleep as much when doing slow caching\n Btrfs: kill BTRFS_I(inode)-\u003eblock_group\n Btrfs: don\u0027t look at the extent buffer level 3 times in a row\n Btrfs: map the node block when looking for readahead targets\n Btrfs: set range_start to the right start in count_range_bits\n ...\n" }, { "commit": "4b9465cb9e3859186eefa1ca3b990a5849386320", "tree": "8fc06452fb75e52f6c1c2e2253c2ff6700e622fd", "parents": [ "e7786c3ae517b2c433edc91714e86be770e9f1ce" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Jun 03 09:36:29 2011 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Sat Jun 04 08:03:47 2011 -0400" }, "message": "Btrfs: add mount -o inode_cache\n\nThis makes the inode map cache default to off until we\nfix the overflow problem when the free space crcs don\u0027t fit\ninside a single page.\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "9e1f1de02c2275d7172e18dc4e7c2065777611bf", "tree": "15e9d202e64275cdbff6ed1d54804da5966d7d8d", "parents": [ "1fa7b6a29c61358cc2ca6f64cef4aa0e1a7ca74c" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Jun 03 18:24:58 2011 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Jun 03 18:24:58 2011 -0400" }, "message": "more conservative S_NOSEC handling\n\nCaching \"we have already removed suid/caps\" was overenthusiastic as merged.\nOn network filesystems we might have had suid/caps set on another client,\nsilently picked by this client on revalidate, all of that *without* clearing\nthe S_NOSEC flag.\n\nAFAICS, the only reasonably sane way to deal with that is\n\t* new superblock flag; unless set, S_NOSEC is not going to be set.\n\t* local block filesystems set it in their -\u003emount() (more accurately,\nmount_bdev() does, so does btrfs -\u003emount(), users of mount_bdev() other than\nlocal block ones clear it)\n\t* if any network filesystem (or a cluster one) wants to use S_NOSEC,\nit\u0027ll need to set MS_NOSEC in sb-\u003es_flags *AND* take care to clear S_NOSEC when\ninode attribute changes are picked from other clients.\n\nIt\u0027s not an earth-shattering hole (anybody that can set suid on another client\nwill almost certainly be able to write to the file before doing that anyway),\nbut it\u0027s a bug that needs fixing.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "a0c3061093c8b49facef95dc09a618c6e0d17cb5", "tree": "1d6ff7c06134b71a8bd0721395386e82e46e60c8", "parents": [ "10799db60cbc4f990dd69eb49883477095c66af7", "174ba50915b08dcfd07c8b5fb795b46a165fa09a" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri May 27 13:57:12 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri May 27 13:57:12 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: (58 commits)\n Btrfs: use the device_list_mutex during write_dev_supers\n Btrfs: setup free ino caching in a more asynchronous way\n btrfs scrub: don\u0027t coalesce pages that are logically discontiguous\n Btrfs: return -ENOMEM in clear_extent_bit\n Btrfs: add mount -o auto_defrag\n Btrfs: using rcu lock in the reader side of devices list\n Btrfs: drop unnecessary device lock\n Btrfs: fix the race between remove dev and alloc chunk\n Btrfs: fix the race between reading and updating devices\n Btrfs: fix bh leak on __btrfs_open_devices path\n Btrfs: fix unsafe usage of merge_state\n Btrfs: allocate extent state and check the result properly\n fs/btrfs: Add missing btrfs_free_path\n Btrfs: check return value of btrfs_inc_extent_ref()\n Btrfs: return error to caller if read_one_inode() fails\n Btrfs: BUG_ON is deleted from the caller of btrfs_truncate_item \u0026 btrfs_extend_item\n Btrfs: return error code to caller when btrfs_del_item fails\n Btrfs: return error code to caller when btrfs_previous_item fails\n btrfs: fix typo \u0027testeing\u0027 -\u003e \u0027testing\u0027\n btrfs: typo: \u0027btrfS\u0027 -\u003e \u0027btrfs\u0027\n ...\n" }, { "commit": "4cb5300bc839b8a943eb19c9f27f25470e22d0ca", "tree": "ac0f2fb481c7aa6af08a624d276fa6d580c94c9b", "parents": [ "d6c0cb379c5198487e4ac124728cbb2346d63b1f" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Tue May 24 15:35:30 2011 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu May 26 17:52:15 2011 -0400" }, "message": "Btrfs: add mount -o auto_defrag\n\nThis will detect small random writes into files and\nqueue the up for an auto defrag process. It isn\u0027t well suited to\ndatabase workloads yet, but works for smaller files such as rpm, sqlite\nor bdb databases.\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "90a887c9a2e25bcb1fc658fad59dfbc6fb792734", "tree": "4f6ac7e5a92d503a573b5fcf1893623818f6794d", "parents": [ "d71bc6db5e48066bde78a480bb9e3057b3db1a3c" ], "author": { "name": "Dan Magenheimer", "email": "dan.magenheimer@oracle.com", "time": "Thu May 26 10:01:56 2011 -0600" }, "committer": { "name": "Dan Magenheimer", "email": "dan.magenheimer@oracle.com", "time": "Thu May 26 10:01:56 2011 -0600" }, "message": "btrfs: add cleancache support\n\nThis sixth patch of eight in this cleancache series \"opts-in\"\ncleancache for btrfs. Filesystems must explicitly enable\ncleancache by calling cleancache_init_fs anytime an instance\nof the filesystem is mounted. Btrfs uses its own readpage\nwhich must be hooked, but all other cleancache hooks are in\nthe VFS layer including the matching cleancache_flush_fs hook\nwhich must be called on unmount.\n\nDetails and a FAQ can be found in Documentation/vm/cleancache.txt\n\n[v6-v8: no changes]\n[v5: jeremy@goop.org: simplify init hook and any future fs init changes]\nSigned-off-by: Dan Magenheimer \u003cdan.magenheimer@oracle.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\nReviewed-by: Jeremy Fitzhardinge \u003cjeremy@goop.org\u003e\nReviewed-by: Konrad Rzeszutek Wilk \u003ckonrad.wilk@oracle.com\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Al Viro \u003cviro@ZenIV.linux.org.uk\u003e\nCc: Matthew Wilcox \u003cmatthew@wil.cx\u003e\nCc: Nick Piggin \u003cnpiggin@kernel.dk\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Rik Van Riel \u003criel@redhat.com\u003e\nCc: Jan Beulich \u003cJBeulich@novell.com\u003e\nCc: Andreas Dilger \u003cadilger@sun.com\u003e\nCc: Ted Ts\u0027o \u003ctytso@mit.edu\u003e\nCc: Mark Fasheh \u003cmfasheh@suse.com\u003e\nCc: Joel Becker \u003cjoel.becker@oracle.com\u003e\nCc: Nitin Gupta \u003cngupta@vflare.org\u003e\n" }, { "commit": "d6c0cb379c5198487e4ac124728cbb2346d63b1f", "tree": "167a97ac58c7a2fbf7c4e94b6abbfe1e03af014a", "parents": [ "8e531cdfeb75269c6c5aae33651cca39707848da", "1f78160ce1b1b8e657e2248118c4d91f881763f0" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Mon May 23 14:37:47 2011 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Mon May 23 14:37:47 2011 -0400" }, "message": "Merge branch \u0027cleanups_and_fixes\u0027 into inode_numbers\n\nConflicts:\n\tfs/btrfs/tree-log.c\n\tfs/btrfs/volumes.c\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "b083916638eee513be501f53b42a4be0b9851db0", "tree": "b62c38c87d368ca1e5cc5be067094ba82e6bf8a0", "parents": [ "37daa4f968e9470ae9f30e246a5781717c598271" ], "author": { "name": "Julia Lawall", "email": "julia@diku.dk", "time": "Sat May 14 07:10:51 2011 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Mon May 23 13:24:41 2011 -0400" }, "message": "fs/btrfs: Add missing btrfs_free_path\n\nBtrfs_alloc_path should be matched with btrfs_free_path in error-handling code.\n\nA simplified version of the semantic match that finds this problem is as\nfollows: (http://coccinelle.lip6.fr/)\n\n// \u003csmpl\u003e\n@r exists@\nlocal idexpression struct btrfs_path * x;\nexpression ra,rb;\nposition p1,p2;\n@@\n\nx \u003d btrfs_alloc_path@p1(...)\n... when !\u003d btrfs_free_path(x,...)\n when !\u003d if (...) { ... btrfs_free_path(x,...) ...}\n when !\u003d x \u003d ra\nif(...) { ... when !\u003d x \u003d rb\n when forall\n when !\u003d btrfs_free_path(x,...)\n \\(return \u003c+...x...+\u003e; \\| return@p2...; \\) }\n\n@script:python@\np1 \u003c\u003c r.p1;\np2 \u003c\u003c r.p2;\n@@\n\ncocci.print_main(\"alloc\",p1)\ncocci.print_secs(\"return\",p2)\n// \u003c/smpl\u003e\n\nSigned-off-by: Julia Lawall \u003cjulia@diku.dk\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "aa2dfb372a2a647beedac163ce6f8b0fcbefac29", "tree": "ff64f4d4921df2f0fbe5b356dc9b2384c7957dc1", "parents": [ "945d8962ceee6bb273365d0bdf42f763225b290f", "73c5de0051533cbdf2bb656586c3eb21a475aa7d" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Sun May 22 12:36:34 2011 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Sun May 22 12:36:34 2011 -0400" }, "message": "Merge branch \u0027allocator\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/arne/btrfs-unstable-arne into inode_numbers\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "945d8962ceee6bb273365d0bdf42f763225b290f", "tree": "43f5617022c7c947c3c63664e49eb9575ab82f2f", "parents": [ "0d0ca30f180906224be6279788f2b202cfd959d8", "4ea028859bbdad34b84c9951fbb832ae10c6a96c" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Sun May 22 12:33:42 2011 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Sun May 22 12:33:42 2011 -0400" }, "message": "Merge branch \u0027cleanups\u0027 of git://repo.or.cz/linux-2.6/btrfs-unstable into inode_numbers\n\nConflicts:\n\tfs/btrfs/extent-tree.c\n\tfs/btrfs/free-space-cache.c\n\tfs/btrfs/inode.c\n\tfs/btrfs/tree-log.c\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "16cdcec736cd214350cdb591bf1091f8beedefa0", "tree": "5598d4561660c4d7a1d4de8b3703d6dd3cc7f9e7", "parents": [ "61c4f2c81c61f73549928dfd9f3e8f26aa36a8cf" ], "author": { "name": "Miao Xie", "email": "miaox@cn.fujitsu.com", "time": "Fri Apr 22 18:12:22 2011 +0800" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Sat May 21 09:30:56 2011 -0400" }, "message": "btrfs: implement delayed inode items operation\n\nChangelog V5 -\u003e V6:\n- Fix oom when the memory load is high, by storing the delayed nodes into the\n root\u0027s radix tree, and letting btrfs inodes go.\n\nChangelog V4 -\u003e V5:\n- Fix the race on adding the delayed node to the inode, which is spotted by\n Chris Mason.\n- Merge Chris Mason\u0027s incremental patch into this patch.\n- Fix deadlock between readdir() and memory fault, which is reported by\n Itaru Kitayama.\n\nChangelog V3 -\u003e V4:\n- Fix nested lock, which is reported by Itaru Kitayama, by updating space cache\n inode in time.\n\nChangelog V2 -\u003e V3:\n- Fix the race between the delayed worker and the task which does delayed items\n balance, which is reported by Tsutomu Itoh.\n- Modify the patch address David Sterba\u0027s comment.\n- Fix the bug of the cpu recursion spinlock, reported by Chris Mason\n\nChangelog V1 -\u003e V2:\n- break up the global rb-tree, use a list to manage the delayed nodes,\n which is created for every directory and file, and used to manage the\n delayed directory name index items and the delayed inode item.\n- introduce a worker to deal with the delayed nodes.\n\nCompare with Ext3/4, the performance of file creation and deletion on btrfs\nis very poor. the reason is that btrfs must do a lot of b+ tree insertions,\nsuch as inode item, directory name item, directory name index and so on.\n\nIf we can do some delayed b+ tree insertion or deletion, we can improve the\nperformance, so we made this patch which implemented delayed directory name\nindex insertion/deletion and delayed inode update.\n\nImplementation:\n- introduce a delayed root object into the filesystem, that use two lists to\n manage the delayed nodes which are created for every file/directory.\n One is used to manage all the delayed nodes that have delayed items. And the\n other is used to manage the delayed nodes which is waiting to be dealt with\n by the work thread.\n- Every delayed node has two rb-tree, one is used to manage the directory name\n index which is going to be inserted into b+ tree, and the other is used to\n manage the directory name index which is going to be deleted from b+ tree.\n- introduce a worker to deal with the delayed operation. This worker is used\n to deal with the works of the delayed directory name index items insertion\n and deletion and the delayed inode update.\n When the delayed items is beyond the lower limit, we create works for some\n delayed nodes and insert them into the work queue of the worker, and then\n go back.\n When the delayed items is beyond the upper bound, we create works for all\n the delayed nodes that haven\u0027t been dealt with, and insert them into the work\n queue of the worker, and then wait for that the untreated items is below some\n threshold value.\n- When we want to insert a directory name index into b+ tree, we just add the\n information into the delayed inserting rb-tree.\n And then we check the number of the delayed items and do delayed items\n balance. (The balance policy is above.)\n- When we want to delete a directory name index from the b+ tree, we search it\n in the inserting rb-tree at first. If we look it up, just drop it. If not,\n add the key of it into the delayed deleting rb-tree.\n Similar to the delayed inserting rb-tree, we also check the number of the\n delayed items and do delayed items balance.\n (The same to inserting manipulation)\n- When we want to update the metadata of some inode, we cached the data of the\n inode into the delayed node. the worker will flush it into the b+ tree after\n dealing with the delayed insertion and deletion.\n- We will move the delayed node to the tail of the list after we access the\n delayed node, By this way, we can cache more delayed items and merge more\n inode updates.\n- If we want to commit transaction, we will deal with all the delayed node.\n- the delayed node will be freed when we free the btrfs inode.\n- Before we log the inode items, we commit all the directory name index items\n and the delayed inode update.\n\nI did a quick test by the benchmark tool[1] and found we can improve the\nperformance of file creation by ~15%, and file deletion by ~20%.\n\nBefore applying this patch:\nCreate files:\n Total files: 50000\n Total time: 1.096108\n Average time: 0.000022\nDelete files:\n Total files: 50000\n Total time: 1.510403\n Average time: 0.000030\n\nAfter applying this patch:\nCreate files:\n Total files: 50000\n Total time: 0.932899\n Average time: 0.000019\nDelete files:\n Total files: 50000\n Total time: 1.215732\n Average time: 0.000024\n\n[1] http://marc.info/?l\u003dlinux-btrfs\u0026m\u003d128212635122920\u0026q\u003dp3\n\nMany thanks for Kitayama-san\u0027s help!\n\nSigned-off-by: Miao Xie \u003cmiaox@cn.fujitsu.com\u003e\nReviewed-by: David Sterba \u003cdave@jikos.cz\u003e\nTested-by: Tsutomu Itoh \u003ct-itoh@jp.fujitsu.com\u003e\nTested-by: Itaru Kitayama \u003ckitayama@cl.bb4u.ne.jp\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "bcd53741cc2af4342ac3ff6983bddc4a1b63b9b4", "tree": "5be83348abb93689effda63918fdec4fb0b5461c", "parents": [ "7cf96da3ec7ca225acf4f284b0e904a1f5f98821" ], "author": { "name": "Arne Jansen", "email": "sensille@gmx.net", "time": "Tue Apr 12 10:43:21 2011 +0200" }, "committer": { "name": "Arne Jansen", "email": "sensille@gmx.net", "time": "Fri May 13 15:36:05 2011 +0200" }, "message": "btrfs: move btrfs_cmp_device_free_bytes to super.c\n\nthis function won\u0027t be used here anymore, so move it super.c where it is\nused for df-calculation\n" }, { "commit": "306e16ce13c0f3d4fc071b45803b5b83c2606011", "tree": "109aa42ae17d91429d11ab332e0c16e790f95dc5", "parents": [ "3fd9952df4964fac7d5868ba48eadcc9dae3ba46" ], "author": { "name": "David Sterba", "email": "dsterba@suse.cz", "time": "Tue Apr 19 14:29:38 2011 +0200" }, "committer": { "name": "David Sterba", "email": "dsterba@suse.cz", "time": "Mon May 02 13:57:19 2011 +0200" }, "message": "btrfs: rename variables clashing with global function names\n\nreported by gcc -Wshadow:\npage_index, page_offset, new_inode, dev_name\n\nSigned-off-by: David Sterba \u003cdsterba@suse.cz\u003e\n" }, { "commit": "e15d0542426f063dc53b4c51bdfc11e0bbe4d298", "tree": "29299313a855f1533e4d55500d17c317d3b8f078", "parents": [ "13f2696f1da9700d401db0ac2bc27ebc17068b22" ], "author": { "name": "Xin Zhong", "email": "xin.zhong@intel.com", "time": "Wed Apr 06 07:33:51 2011 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Mon Apr 11 20:26:50 2011 -0400" }, "message": "Btrfs: fix subvolume mount by name problem when default mount subvolume is set\n\nWe create two subvolumes (meego_root and meego_home) in\nbtrfs root directory. And set meego_root as default mount\nsubvolume. After we remount btrfs, meego_root is mounted\nto top directory by default. Then when we try to mount\nmeego_home (subvol\u003dmeego_home) to a subdirectory, it failed.\nThe problem is when default mount subvolume is set to\nmeego_root, we search meego_home in meego_root but can not find\nit. So the solution is to add a new mount option (subvolrootid)\nto specify subvol id of root and search subvol name in it. For\nour case, now we can use \"-o subvolrootid\u003d0,subvol\u003dmeego_home)\nto mount meego_home.\n\nDetail information can be found in meego bugzilla:\nhttps://bugs.meego.com/show_bug.cgi?id\u003d15055\n\nSigned-off-by: Zhong, Xin \u003cxin.zhong@intel.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "200da64e0b039f873f0f20481e6a7d056e7cc6c9", "tree": "11cd911aa441efdde26260b72a642daef0fd61f0", "parents": [ "c9149235a42ab93914434fff45c44b45023363f3" ], "author": { "name": "Tsutomu Itoh", "email": "t-itoh@jp.fujitsu.com", "time": "Thu Mar 31 00:44:29 2011 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Tue Apr 05 01:19:41 2011 -0400" }, "message": "Btrfs: fix /proc/mounts info.\n\nSome mount options are not displayed by /proc/mounts.\nThis patch displays the option such as compress_type by /proc/mounts.\n\nEx.\n [before]\n $ mount | grep sdc2\n /dev/sdc2 on /test12 type btrfs (rw,space_cache,compress\u003dlzo)\n $ cat /proc/mounts | grep sdc2\n /dev/sdc2 /test12 btrfs rw,relatime,compress 0 0\n\n [after]\n $ mount | grep sdc2\n /dev/sdc2 on /test12 type btrfs (rw,space_cache,compress\u003dlzo)\n $ cat /proc/mounts | grep sdc2\n /dev/sdc2 /test12 btrfs rw,relatime,compress\u003dlzo,space_cache 0 0\n\nSigned-off-by: Tsutomu Itoh \u003ct-itoh@jp.fujitsu.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "1abe9b8a138c9988ba8f7bfded6453649a31541f", "tree": "9fe0c181e78b075b65f6b1802f0a5092e7afbc6a", "parents": [ "240f62c8756df285da11469259b3900f32883168" ], "author": { "name": "liubo", "email": "liubo2009@cn.fujitsu.com", "time": "Thu Mar 24 11:18:59 2011 +0000" }, "committer": { "name": "root", "email": "Chris Mason chris.mason@oracle.com", "time": "Mon Mar 28 05:37:33 2011 -0400" }, "message": "Btrfs: add initial tracepoint support for btrfs\n\nTracepoints can provide insight into why btrfs hits bugs and be greatly\nhelpful for debugging, e.g\n dd-7822 [000] 2121.641088: btrfs_inode_request: root \u003d 5(FS_TREE), gen \u003d 4, ino \u003d 256, blocks \u003d 8, disk_i_size \u003d 0, last_trans \u003d 8, logged_trans \u003d 0\n dd-7822 [000] 2121.641100: btrfs_inode_new: root \u003d 5(FS_TREE), gen \u003d 8, ino \u003d 257, blocks \u003d 0, disk_i_size \u003d 0, last_trans \u003d 0, logged_trans \u003d 0\n btrfs-transacti-7804 [001] 2146.935420: btrfs_cow_block: root \u003d 2(EXTENT_TREE), refs \u003d 2, orig_buf \u003d 29368320 (orig_level \u003d 0), cow_buf \u003d 29388800 (cow_level \u003d 0)\n btrfs-transacti-7804 [001] 2146.935473: btrfs_cow_block: root \u003d 1(ROOT_TREE), refs \u003d 2, orig_buf \u003d 29364224 (orig_level \u003d 0), cow_buf \u003d 29392896 (cow_level \u003d 0)\n btrfs-transacti-7804 [001] 2146.972221: btrfs_transaction_commit: root \u003d 1(ROOT_TREE), gen \u003d 8\n flush-btrfs-2-7821 [001] 2155.824210: btrfs_chunk_alloc: root \u003d 3(CHUNK_TREE), offset \u003d 1103101952, size \u003d 1073741824, num_stripes \u003d 1, sub_stripes \u003d 0, type \u003d DATA\n flush-btrfs-2-7821 [001] 2155.824241: btrfs_cow_block: root \u003d 2(EXTENT_TREE), refs \u003d 2, orig_buf \u003d 29388800 (orig_level \u003d 0), cow_buf \u003d 29396992 (cow_level \u003d 0)\n flush-btrfs-2-7821 [001] 2155.824255: btrfs_cow_block: root \u003d 4(DEV_TREE), refs \u003d 2, orig_buf \u003d 29372416 (orig_level \u003d 0), cow_buf \u003d 29401088 (cow_level \u003d 0)\n flush-btrfs-2-7821 [000] 2155.824329: btrfs_cow_block: root \u003d 3(CHUNK_TREE), refs \u003d 2, orig_buf \u003d 20971520 (orig_level \u003d 0), cow_buf \u003d 20975616 (cow_level \u003d 0)\n btrfs-endio-wri-7800 [001] 2155.898019: btrfs_cow_block: root \u003d 5(FS_TREE), refs \u003d 2, orig_buf \u003d 29384704 (orig_level \u003d 0), cow_buf \u003d 29405184 (cow_level \u003d 0)\n btrfs-endio-wri-7800 [001] 2155.898043: btrfs_cow_block: root \u003d 7(CSUM_TREE), refs \u003d 2, orig_buf \u003d 29376512 (orig_level \u003d 0), cow_buf \u003d 29409280 (cow_level \u003d 0)\n\nHere is what I have added:\n\n1) ordere_extent:\n btrfs_ordered_extent_add\n btrfs_ordered_extent_remove\n btrfs_ordered_extent_start\n btrfs_ordered_extent_put\n\nThese provide critical information to understand how ordered_extents are\nupdated.\n\n2) extent_map:\n btrfs_get_extent\n\nextent_map is used in both read and write cases, and it is useful for tracking\nhow btrfs specific IO is running.\n\n3) writepage:\n __extent_writepage\n btrfs_writepage_end_io_hook\n\nPages are cirtical resourses and produce a lot of corner cases during writeback,\nso it is valuable to know how page is written to disk.\n\n4) inode:\n btrfs_inode_new\n btrfs_inode_request\n btrfs_inode_evict\n\nThese can show where and when a inode is created, when a inode is evicted.\n\n5) sync:\n btrfs_sync_file\n btrfs_sync_fs\n\nThese show sync arguments.\n\n6) transaction:\n btrfs_transaction_commit\n\nIn transaction based filesystem, it will be useful to know the generation and\nwho does commit.\n\n7) back reference and cow:\n\tbtrfs_delayed_tree_ref\n\tbtrfs_delayed_data_ref\n\tbtrfs_delayed_ref_head\n\tbtrfs_cow_block\n\nBtrfs natively supports back references, these tracepoints are helpful on\nunderstanding btrfs\u0027s COW mechanism.\n\n8) chunk:\n\tbtrfs_chunk_alloc\n\tbtrfs_chunk_free\n\nChunk is a link between physical offset and logical offset, and stands for space\ninfomation in btrfs, and these are helpful on tracing space things.\n\n9) reserved_extent:\n\tbtrfs_reserved_extent_alloc\n\tbtrfs_reserved_extent_free\n\nThese can show how btrfs uses its space.\n\nSigned-off-by: Liu Bo \u003cliubo2009@cn.fujitsu.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "4660ba63f1c4e07c20a435e084f12ba48a82bd2b", "tree": "494973a1dd4102eede20298f478574801af31b86", "parents": [ "958ede7f1b72b29cd0d29ec88ee2bcb4c87dab61", "ec29ed5b407d618a8128f5942aade9e1758aa14b" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Feb 25 14:03:39 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Feb 25 14:03:39 2011 -0800" }, "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: fix fiemap bugs with delalloc\n Btrfs: set FMODE_EXCL in btrfs_device-\u003emode\n Btrfs: make btrfs_rm_device() fail gracefully\n Btrfs: Avoid accessing unmapped kernel address\n Btrfs: Fix BTRFS_IOC_SUBVOL_SETFLAGS ioctl\n Btrfs: allow balance to explicitly allocate chunks as it relocates\n Btrfs: put ENOSPC debugging under a mount option\n" }, { "commit": "91435650c233b93e0da389db74f4b2c11c5ad2d4", "tree": "c4f8fef1348a0ac188dca47020d86b206ed5d41f", "parents": [ "c26a920373a983b52223eed5a13b97404d8b4158" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Wed Feb 16 13:10:41 2011 -0500" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Wed Feb 16 15:28:36 2011 -0500" }, "message": "Btrfs: put ENOSPC debugging under a mount option\n\nENOSPC in btrfs is getting to the point where the extra debugging isn\u0027t\nrequired. I\u0027ve put it under mount -o enospc_debug just in case someone\nis having difficult problems.\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "cb5520f02c010e3cb974b9ac06f30aafa2eebc38", "tree": "8342407cebb6420f04f46694b8d812552a14cb49", "parents": [ "eee4da2cef8e2dc2b15066e9ebb5b2ff63396eb3", "3a90983dbdcb2f4f48c0d771d8e5b4d88f27fae6" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Feb 07 14:06:18 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Feb 07 14:06:18 2011 -0800" }, "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: (33 commits)\n Btrfs: Fix page count calculation\n btrfs: Drop __exit attribute on btrfs_exit_compress\n btrfs: cleanup error handling in btrfs_unlink_inode()\n Btrfs: exclude super blocks when we read in block groups\n Btrfs: make sure search_bitmap finds something in remove_from_bitmap\n btrfs: fix return value check of btrfs_start_transaction()\n btrfs: checking NULL or not in some functions\n Btrfs: avoid uninit variable warnings in ordered-data.c\n Btrfs: catch errors from btrfs_sync_log\n Btrfs: make shrink_delalloc a little friendlier\n Btrfs: handle no memory properly in prepare_pages\n Btrfs: do error checking in btrfs_del_csums\n Btrfs: use the global block reserve if we cannot reserve space\n Btrfs: do not release more reserved bytes to the global_block_rsv than we need\n Btrfs: fix check_path_shared so it returns the right value\n btrfs: check return value of btrfs_start_ioctl_transaction() properly\n btrfs: fix return value check of btrfs_join_transaction()\n fs/btrfs/inode.c: Add missing IS_ERR test\n btrfs: fix missing break in switch phrase\n btrfs: fix several uncheck memory allocations\n ...\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": "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": "3f3d0bc0df041236fad4ffa82188a6e4ef9af75e", "tree": "b27b210a3c48e08e63d1ee69c9b4b7e86709e360", "parents": [ "bdc924bb4cdac92b945945c3149ab8191c92d75d" ], "author": { "name": "Tero Roponen", "email": "tero.roponen@gmail.com", "time": "Mon Dec 27 16:43:13 2010 +0800" }, "committer": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Thu Jan 27 01:05:11 2011 +0800" }, "message": "Btrfs: Free correct pointer after using strsep\n\nWe must save and free the original kstrdup()\u0027ed pointer\nbecause strsep() modifies its first argument.\n\nSigned-off-by: Tero Roponen \u003ctero.roponen@gmail.com\u003e\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\n" }, { "commit": "bdc924bb4cdac92b945945c3149ab8191c92d75d", "tree": "906e0ae44bff82d3bdc03efbf5e42144b5e941ac", "parents": [ "83a4d54840c88a4a45c49670f044b8c7ddeaa8c7" ], "author": { "name": "Ian Kent", "email": "raven@themaw.net", "time": "Mon Dec 27 16:33:15 2010 +0800" }, "committer": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Thu Jan 27 01:05:07 2011 +0800" }, "message": "Btrfs: Fix memory leak on finding existing super\n\nWe missed a memory deallocation in commit 450ba0ea.\n\nIf an existing super block is found at mount and there is no\nerror condition then the pre-allocated tree_root and fs_info\nare no not used and are not freeded.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\n" }, { "commit": "eee2a817df7c5a6e569f353f8be78cc1b3604bb6", "tree": "f721beb4712c732702d3383d3c6a52da8b5bbb20", "parents": [ "83896fb5e51594281720d145164f866ba769abd5", "acce952b0263825da32cf10489413dec78053347" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Jan 17 14:43:43 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Jan 17 14:43:43 2011 -0800" }, "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: (25 commits)\n Btrfs: forced readonly mounts on errors\n btrfs: Require CAP_SYS_ADMIN for filesystem rebalance\n Btrfs: don\u0027t warn if we get ENOSPC in btrfs_block_rsv_check\n btrfs: Fix memory leak in btrfs_read_fs_root_no_radix()\n btrfs: check NULL or not\n btrfs: Don\u0027t pass NULL ptr to func that may deref it.\n btrfs: mount failure return value fix\n btrfs: Mem leak in btrfs_get_acl()\n btrfs: fix wrong free space information of btrfs\n btrfs: make the chunk allocator utilize the devices better\n btrfs: restructure find_free_dev_extent()\n btrfs: fix wrong calculation of stripe size\n btrfs: try to reclaim some space when chunk allocation fails\n btrfs: fix wrong data space statistics\n fs/btrfs: Fix build of ctree\n Btrfs: fix off by one while setting block groups readonly\n Btrfs: Add BTRFS_IOC_SUBVOL_GETFLAGS/SETFLAGS ioctls\n Btrfs: Add readonly snapshots support\n Btrfs: Refactor btrfs_ioctl_snap_create()\n btrfs: Extract duplicate decompress code\n ...\n" }, { "commit": "acce952b0263825da32cf10489413dec78053347", "tree": "d934881f247484d7b6917bebc40828600bb6b76c", "parents": [ "6f88a4403def422bd8e276ddf6863d6ac71435d2" ], "author": { "name": "liubo", "email": "liubo2009@cn.fujitsu.com", "time": "Thu Jan 06 19:30:25 2011 +0800" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Mon Jan 17 15:13:08 2011 -0500" }, "message": "Btrfs: forced readonly mounts on errors\n\nThis patch comes from \"Forced readonly mounts on errors\" ideas.\n\nAs we know, this is the first step in being more fault tolerant of disk\ncorruptions instead of just using BUG() statements.\n\nThe major content:\n- add a framework for generating errors that should result in filesystems\n going readonly.\n- keep FS state in disk super block.\n- make sure that all of resource will be freed and released at umount time.\n- make sure that fter FS is forced readonly on error, there will be no more\n disk change before FS is corrected. For this, we should stop write operation.\n\nAfter this patch is applied, the conversion from BUG() to such a framework can\nhappen incrementally.\n\nSigned-off-by: Liu Bo \u003cliubo2009@cn.fujitsu.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "6d07bcec969af335d4e35b3921131b7929bd634e", "tree": "2d1e0bb5f69bdf9dafa2862b6cad965184d67c84", "parents": [ "b2117a39fa96cf4814e7cab8c11494149ba6f29d" ], "author": { "name": "Miao Xie", "email": "miaox@cn.fujitsu.com", "time": "Wed Jan 05 10:07:31 2011 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Sun Jan 16 11:30:19 2011 -0500" }, "message": "btrfs: fix wrong free space information of btrfs\n\nWhen we store data by raid profile in btrfs with two or more different size\ndisks, df command shows there is some free space in the filesystem, but the\nuser can not write any data in fact, df command shows the wrong free space\ninformation of btrfs.\n\n # mkfs.btrfs -d raid1 /dev/sda9 /dev/sda10\n # btrfs-show\n Label: none uuid: a95cd49e-6e33-45b8-8741-a36153ce4b64\n \tTotal devices 2 FS bytes used 28.00KB\n \tdevid 1 size 5.01GB used 2.03GB path /dev/sda9\n \tdevid 2 size 10.00GB used 2.01GB path /dev/sda10\n # btrfs device scan /dev/sda9 /dev/sda10\n # mount /dev/sda9 /mnt\n # dd if\u003d/dev/zero of\u003dtmpfile0 bs\u003d4K count\u003d9999999999\n (fill the filesystem)\n # sync\n # df -TH\n Filesystem\tType\tSize\tUsed\tAvail\tUse%\tMounted on\n /dev/sda9\tbtrfs\t17G\t8.6G\t5.4G\t62%\t/mnt\n # btrfs-show\n Label: none uuid: a95cd49e-6e33-45b8-8741-a36153ce4b64\n \tTotal devices 2 FS bytes used 3.99GB\n \tdevid 1 size 5.01GB used 5.01GB path /dev/sda9\n \tdevid 2 size 10.00GB used 4.99GB path /dev/sda10\n\nIt is because btrfs cannot allocate chunks when one of the pairing disks has\nno space, the free space on the other disks can not be used for ever, and should\nbe subtracted from the total space, but btrfs doesn\u0027t subtract this space from\nthe total. It is strange to the user.\n\nThis patch fixes it by calcing the free space that can be used to allocate\nchunks.\n\nImplementation:\n1. get all the devices free space, and align them by stripe length.\n2. sort the devices by the free space.\n3. check the free space of the devices,\n 3.1. if it is not zero, and then check the number of the devices that has\n more free space than this device,\n if the number of the devices is beyond the min stripe number, the free\n space can be used, and add into total free space.\n if the number of the devices is below the min stripe number, we can not\n use the free space, the check ends.\n 3.2. if the free space is zero, check the next devices, goto 3.1\n\nThis implementation is just likely fake chunk allocation.\n\nAfter appling this patch, df can show correct space information:\n # df -TH\n Filesystem\tType\tSize\tUsed\tAvail\tUse%\tMounted on\n /dev/sda9\tbtrfs\t17G\t8.6G\t0\t100%\t/mnt\n\nSigned-off-by: Miao Xie \u003cmiaox@cn.fujitsu.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "299a08b1c34f9397797946a0fa215c5fd145c5cf", "tree": "beace30f71e49e4ac6428b33916288695c06539f", "parents": [ "f580eb0931fbcb6dc3916f094f471671facd1daa" ], "author": { "name": "Miao Xie", "email": "miaox@cn.fujitsu.com", "time": "Wed Jan 05 10:07:15 2011 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Sun Jan 16 11:30:19 2011 -0500" }, "message": "btrfs: fix wrong data space statistics\n\nJosef has implemented mixed data/metadata chunks, we must add those chunks\u0027\nspace just like data chunks.\n\nSigned-off-by: Miao Xie \u003cmiaox@cn.fujitsu.com\u003e\nReviewed-by: Josef Bacik \u003cjosef@redhat.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "af53d29ac13a97304d44343dc3b26154ca595268", "tree": "6ed2ca27a8d9d1d04b3df839273f36c896cf370e", "parents": [ "ba87167c06ed0049260d9ca36405c0f8af609e07" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Dec 20 10:56:06 2010 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Jan 12 20:02:47 2011 -0500" }, "message": "switch btrfs, close races\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "a6fa6fae40ec336c7df6155255ae64ebef43a8bc", "tree": "6cda8aa6a60967206614a941f034249e3017913e", "parents": [ "261507a02ccba9afda919852263b6bc1581ce1ef" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Mon Oct 25 15:12:26 2010 +0800" }, "committer": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Wed Dec 22 23:15:47 2010 +0800" }, "message": "btrfs: Add lzo compression support\n\nLzo is a much faster compression algorithm than gzib, so would allow\nmore users to enable transparent compression, and some users can\nchoose from compression ratio and speed for different applications\n\nUsage:\n\n # mount -t btrfs -o compress[\u003d\u003czlib,lzo\u003e] dev /mnt\nor\n # mount -t btrfs -o compress-force[\u003d\u003czlib,lzo\u003e] dev /mnt\n\n\"-o compress\" without argument is still allowed for compatability.\n\nCompatibility:\n\nIf we mount a filesystem with lzo compression, it will not be able be\nmounted in old kernels. One reason is, otherwise btrfs will directly\ndump compressed data, which sits in inline extent, to user.\n\nPerformance:\n\nThe test copied a linux source tarball (~400M) from an ext4 partition\nto the btrfs partition, and then extracted it.\n\n(time in second)\n lzo zlib nocompress\ncopy: 10.6 21.7 14.9\nextract: 70.1 94.4 66.6\n\n(data size in MB)\n lzo zlib nocompress\ncopy: 185.87 108.69 394.49\nextract: 193.80 132.36 381.21\n\nChangelog:\n\nv1 -\u003e v2:\n- Select LZO_COMPRESS and LZO_DECOMPRESS in btrfs Kconfig.\n- Add incompability flag.\n- Fix error handling in compress code.\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": "e13cf63f2bbd38721af557f0205da994ea068427", "tree": "26d0d779fadd58814eea18ab2b16370a8565c837", "parents": [ "073f21ae1319348f4f8630003b7901e3be254327", "83a50de97fe96aca82389e061862ed760ece2283" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Dec 14 11:08:13 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Dec 14 11:08:13 2010 -0800" }, "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: prevent RAID level downgrades when space is low\n Btrfs: account for missing devices in RAID allocation profiles\n Btrfs: EIO when we fail to read tree roots\n Btrfs: fix compiler warnings\n Btrfs: Make async snapshot ioctl more generic\n Btrfs: pwrite blocked when writing from the mmaped buffer of the same page\n Btrfs: Fix a crash when mounting a subvolume\n Btrfs: fix sync subvol/snapshot creation\n Btrfs: Fix page leak in compressed writeback path\n Btrfs: do not BUG if we fail to remove the orphan item for dead snapshots\n Btrfs: fixup return code for btrfs_del_orphan_item\n Btrfs: do not do fast caching if we are allocating blocks for tree_root\n Btrfs: deal with space cache errors better\n Btrfs: fix use after free in O_DIRECT\n" }, { "commit": "f106e82caaa0d943e47cacc184f5b40d538e0044", "tree": "5e8b6c5e0b0b35c65ed509029cda85bd54a8aab8", "parents": [ "75eaa0e22c055e38982df267d0f84cc510ba38bf" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Tue Dec 07 01:51:26 2010 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Dec 10 16:29:10 2010 -0500" }, "message": "Btrfs: Fix a crash when mounting a subvolume\n\nWe should drop dentry before deactivating the superblock, otherwise\nwe can hit this bug:\n\nBUG: Dentry f349a690{i\u003d100,n\u003d/} still in use (1) [unmount of btrfs loop1]\n...\n\nSteps to reproduce the bug:\n\n # mount /dev/loop1 /mnt\n # mkdir save\n # btrfs subvolume snapshot /mnt save/snap1\n # umount /mnt\n # mount -o subvol\u003dsave/snap1 /dev/loop1 /mnt\n (crash)\n\nReported-by: Michael Niederle \u003cmniederle@gmx.at\u003e\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "aa3fc52546b847f590d86a093afd863ff9081628", "tree": "9d8b35a700287ae19fb3baa0e9f2c93462795d11", "parents": [ "555bdaefd52c386e79f98591810ceb8bab780398", "5a92bc88cef279261d3f138e25850c122df67045" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Nov 29 14:11:08 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Nov 29 14:11:08 2010 -0800" }, "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: (24 commits)\n Btrfs: don\u0027t use migrate page without CONFIG_MIGRATION\n Btrfs: deal with DIO bios that span more than one ordered extent\n Btrfs: setup blank root and fs_info for mount time\n Btrfs: fix fiemap\n Btrfs - fix race between btrfs_get_sb() and umount\n Btrfs: update inode ctime when using links\n Btrfs: make sure new inode size is ok in fallocate\n Btrfs: fix typo in fallocate to make it honor actual size\n Btrfs: avoid NULL pointer deref in try_release_extent_buffer\n Btrfs: make btrfs_add_nondir take parent inode as an argument\n Btrfs: hold i_mutex when calling btrfs_log_dentry_safe\n Btrfs: use dget_parent where we can UPDATED\n Btrfs: fix more ESTALE problems with NFS\n Btrfs: handle NFS lookups properly\n btrfs: make 1-bit signed fileds unsigned\n btrfs: Show device attr correctly for symlinks\n btrfs: Set file size correctly in file clone\n btrfs: Check if dest_offset is block-size aligned before cloning file\n Btrfs: handle the space_cache option properly\n btrfs: Fix early enospc because \u0027unused\u0027 calculated with wrong sign.\n ...\n" }, { "commit": "450ba0ea06b6ed3612d27f2b7127a9de4160f285", "tree": "2276ddbcb65d7656416cdce69432a5858b35c413", "parents": [ "975f84fee2e8a77ee5f41bfe7c5682bf29366b10" ], "author": { "name": "Josef Bacik", "email": "josef@redhat.com", "time": "Fri Nov 19 14:59:15 2010 -0500" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Sat Nov 27 13:37:51 2010 -0500" }, "message": "Btrfs: setup blank root and fs_info for mount time\n\nThere is a problem with how we use sget, it searches through the list of supers\nattached to the fs_type looking for a super with the same fs_devices as what\nwe\u0027re trying to mount. This depends on sb-\u003es_fs_info being filled, but we don\u0027t\nfill that in until we get to btrfs_fill_super, so we could hit supers on the\nfs_type super list that have a null s_fs_info. In order to fix that we need to\ngo ahead and setup a blank root with a blank fs_info to hold fs_devices, that\nway our test will work out right and then we can set s_fs_info in\nbtrfs_set_super, and then open_ctree will simply use our pre-allocated root and\nfs_info when setting everything up. Thanks,\n\nSigned-off-by: Josef Bacik \u003cjosef@redhat.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "619c8c763928841b1112e1d417f88bc1d44daecb", "tree": "23fc73cf043faac2cdb15a0b22e6e9e29a69797a", "parents": [ "bc1cbf1f86aa2501efa9ca637c736fce6bcc4b1d" ], "author": { "name": "Ian Kent", "email": "raven@themaw.net", "time": "Mon Nov 22 02:21:38 2010 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Sat Nov 27 13:37:44 2010 -0500" }, "message": "Btrfs - fix race between btrfs_get_sb() and umount\n\nWhen mounting a btrfs file system btrfs_test_super() may attempt to\nuse sb-\u003es_fs_info, the btrfs root, of a super block that is going away\nand that has had the btrfs root set to NULL in its -\u003eput_super(). But\nif the super block is going away it cannot be an existing super block\nso we can return false in this case.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "0de90876c6cb774d4a424dafc1fc9ec50071b81b", "tree": "a3edae0a3873c959a94f45ee035de83bb85c379c", "parents": [ "6f33434850ed87dc5e56b60ebbad3d3cf405f296" ], "author": { "name": "Josef Bacik", "email": "josef@redhat.com", "time": "Fri Nov 19 13:40:41 2010 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Sun Nov 21 22:26:05 2010 -0500" }, "message": "Btrfs: handle the space_cache option properly\n\nWhen I added the clear_cache option I screwed up and took the break out of\nthe space_cache case statement, so whenever you mount with space_cache you also\nget clear_cache, which does you no good if you say set space_cache in fstab so\nit always gets set. This patch adds the break back in properly.\n\nSigned-off-by: Josef Bacik \u003cjosef@redhat.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "925d169f5b86fe57e2f5264ea574cce9a89b719d", "tree": "241d3156b427c6398bd3fc5efa9108635d0e189b", "parents": [ "cdf01dd5443d0befc8c6a32cb2e3d2f568fd2558", "6418c96107a2b399848bb8cfc6e29f11ca74fb94" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Oct 30 09:05:48 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Oct 30 09:05:48 2010 -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: (39 commits)\n Btrfs: deal with errors from updating the tree log\n Btrfs: allow subvol deletion by unprivileged user with -o user_subvol_rm_allowed\n Btrfs: make SNAP_DESTROY async\n Btrfs: add SNAP_CREATE_ASYNC ioctl\n Btrfs: add START_SYNC, WAIT_SYNC ioctls\n Btrfs: async transaction commit\n Btrfs: fix deadlock in btrfs_commit_transaction\n Btrfs: fix lockdep warning on clone ioctl\n Btrfs: fix clone ioctl where range is adjacent to extent\n Btrfs: fix delalloc checks in clone ioctl\n Btrfs: drop unused variable in block_alloc_rsv\n Btrfs: cleanup warnings from gcc 4.6 (nonbugs)\n Btrfs: Fix variables set but not read (bugs found by gcc 4.6)\n Btrfs: Use ERR_CAST helpers\n Btrfs: use memdup_user helpers\n Btrfs: fix raid code for removing missing drives\n Btrfs: Switch the extent buffer rbtree into a radix tree\n Btrfs: restructure try_release_extent_buffer()\n Btrfs: use the flusher threads for delalloc throttling\n Btrfs: tune the chunk allocation to 5% of the FS as metadata\n ...\n\nFix up trivial conflicts in fs/btrfs/super.c and fs/fs-writeback.c, and\nremove use of INIT_RCU_HEAD in fs/btrfs/extent_io.c (that init macro was\nuseless and removed in commit 5e8067adfdba: \"rcu head remove init\")\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": "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": "d0b678cb0a26783ab7238784f1e7e608e5caafa3", "tree": "a912b938a6558550960f6b07139bd119d86f89eb", "parents": [ "2354d08fe9aeec3e451b85cb5387a6b28dbca0b1" ], "author": { "name": "Julia Lawall", "email": "julia@diku.dk", "time": "Fri Oct 29 15:14:23 2010 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Oct 29 15:14:23 2010 -0400" }, "message": "Btrfs: Use ERR_CAST helpers\n\nUse ERR_CAST(x) rather than ERR_PTR(PTR_ERR(x)). The former makes more\nclear what is the purpose of the operation, which otherwise looks like a\nno-op.\n\nThe semantic patch that makes this change is as follows:\n(http://coccinelle.lip6.fr/)\n\n// \u003csmpl\u003e\n@@\ntype T;\nT x;\nidentifier f;\n@@\n\nT f (...) { \u003c+...\n- ERR_PTR(PTR_ERR(x))\n+ x\n ...+\u003e }\n\n@@\nexpression x;\n@@\n\n- ERR_PTR(PTR_ERR(x))\n+ ERR_CAST(x)\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": "6b5b817f103450444f3f658a498f435d92a197e5", "tree": "2896588127c4dd6c2867ef09e7e3cdd83391f8ae", "parents": [ "8216ef866df1119fd5a72372b8b29bce49c18590", "e9bb7f10d3617304ef94ff7aa8fefbce3078f08b" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Oct 29 09:27:49 2010 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Oct 29 09:27:49 2010 -0400" }, "message": "Merge branch \u0027bug-fixes\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/josef/btrfs-work\n\nConflicts:\n\tfs/btrfs/extent-tree.c\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "88c2ba3b069f1e0f4694124d02985fa7620a19f1", "tree": "e41859aca299e14e2658d75e2bf1ef2aea9ab077", "parents": [ "67377734fd24c32cbdfeb697c2e2bd7fed519e75" ], "author": { "name": "Josef Bacik", "email": "josef@redhat.com", "time": "Tue Sep 21 14:21:34 2010 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Oct 29 09:26:36 2010 -0400" }, "message": "Btrfs: Add a clear_cache mount option\n\nIf something goes wrong with the free space cache we need a way to make sure\nit\u0027s not loaded on mount and that it\u0027s cleared for everybody. When you pass the\nclear_cache option it will make it so all block groups are setup to be cleared,\nwhich keeps them from being loaded and then they will be truncated when the\ntransaction is committed. Thanks,\n\nSigned-off-by: Josef Bacik \u003cjosef@redhat.com\u003e\n" }, { "commit": "061dbc6b9010bc1a30ef9a1da5469aefa83abd7f", "tree": "34d4daddc92d881d1836880e03f0ec82a742f90e", "parents": [ "a7f9fb205a88ab9af675a68fc554cf51dafc8b60" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Jul 26 16:21:33 2010 +0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Oct 29 04:17:21 2010 -0400" }, "message": "convert btrfs\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "0af3d00bad38d3bb9912a60928ad0669f17bdb76", "tree": "abbf4c773138a33dcde483ac60f016c4b5e55dcc", "parents": [ "f6f94e2ab1b33f0082ac22d71f66385a60d8157f" ], "author": { "name": "Josef Bacik", "email": "josef@redhat.com", "time": "Mon Jun 21 14:48:16 2010 -0400" }, "committer": { "name": "Josef Bacik", "email": "josef@redhat.com", "time": "Thu Oct 28 15:59:09 2010 -0400" }, "message": "Btrfs: create special free space cache inode\n\nIn order to save free space cache, we need an inode to hold the data, and we\nneed a special item to point at the right inode for the right block group. So\nfirst, create a special item that will point to the right inode, and the number\nof extent entries we will have and the number of bitmaps we will have. We\ntruncate and pre-allocate space everytime to make sure it\u0027s uptodate.\n\nThis feature will be turned on as soon as you mount with -o space_cache, however\nit is safe to boot into old kernels, they will just generate the cache the old\nfashion way. When you boot back into a newer kernel we will notice that we\nmodified and not the cache and automatically discard the cache.\n\nSigned-off-by: Josef Bacik \u003cjosef@redhat.com\u003e\n" }, { "commit": "0e78340f3c1fc603e8016c8ac304766bcc65506e", "tree": "a86dfd1d78a577e8d799e90f105ccfdc881dec0a", "parents": [ "8bb8ab2e93f9c3c9453e13be0f37d344a32a3a6d" ], "author": { "name": "Josef Bacik", "email": "josef@redhat.com", "time": "Fri Oct 22 15:26:53 2010 -0400" }, "committer": { "name": "Josef Bacik", "email": "josef@redhat.com", "time": "Fri Oct 22 15:55:03 2010 -0400" }, "message": "Btrfs: fix error handling in btrfs_get_sb\n\nIf we failed to find the root subvol id, or the subvol\u003d\u003cname\u003e, we would\ndeactivate the locked super and close the devices. The problem is at this point\nwe have gotten the SB all setup, which includes setting super_operations, so\nwhen we\u0027d deactiveate the super, we\u0027d do a close_ctree() which closes the\ndevices, so we\u0027d end up closing the devices twice. So if you do something like\nthis\n\nmount /dev/sda1 /mnt/test1\nmount /dev/sda1 /mnt/test2 -o subvol\u003dxxx\numount /mnt/test1\n\nit would blow up (if subvol xxx doesn\u0027t exist). This patch fixes that problem.\nThanks,\n\nSigned-off-by: Josef Bacik \u003cjosef@redhat.com\u003e\n" }, { "commit": "89a55897a2fbbceb94480952784004bf23911d38", "tree": "e62ea1ced4c7941ab53e7aa7047ce8f0af0add9f", "parents": [ "bf5fc093c5b625e4259203f1cee7ca73488a5620" ], "author": { "name": "Josef Bacik", "email": "josef@redhat.com", "time": "Thu Oct 14 14:52:27 2010 -0400" }, "committer": { "name": "Josef Bacik", "email": "josef@redhat.com", "time": "Fri Oct 22 15:54:55 2010 -0400" }, "message": "Btrfs: fix df regression\n\nThe new ENOSPC stuff breaks out the raid types which breaks the way we were\nreporting df to the system. This fixes it back so that Available is the total\nspace available to data and used is the actual bytes used by the filesystem.\nThis means that Available is Total - data used - all of the metadata space.\nThanks,\n\nSigned-off-by: Josef Bacik \u003cjosef@redhat.com\u003e\n" }, { "commit": "6038f373a3dc1f1c26496e60b6c40b164716f07e", "tree": "a0d3bbd026eea41b9fc36b8c722cbaf56cd9f825", "parents": [ "1ec5584e3edf9c4bf2c88c846534d19cf986ba11" ], "author": { "name": "Arnd Bergmann", "email": "arnd@arndb.de", "time": "Sun Aug 15 18:52:59 2010 +0200" }, "committer": { "name": "Arnd Bergmann", "email": "arnd@arndb.de", "time": "Fri Oct 15 15:53:27 2010 +0200" }, "message": "llseek: automatically add .llseek fop\n\nAll file_operations should get a .llseek operation so we can make\nnonseekable_open the default for future file operations without a\n.llseek pointer.\n\nThe three cases that we can automatically detect are no_llseek, seq_lseek\nand default_llseek. For cases where we can we can automatically prove that\nthe file offset is always ignored, we use noop_llseek, which maintains\nthe current behavior of not returning an error from a seek.\n\nNew drivers should normally not use noop_llseek but instead use no_llseek\nand call nonseekable_open at open time. Existing drivers can be converted\nto do the same when the maintainer knows for certain that no user code\nrelies on calling seek on the device file.\n\nThe generated code is often incorrectly indented and right now contains\ncomments that clarify for each added line why a specific variant was\nchosen. In the version that gets submitted upstream, the comments will\nbe gone and I will manually fix the indentation, because there does not\nseem to be a way to do that using coccinelle.\n\nSome amount of new code is currently sitting in linux-next that should get\nthe same modifications, which I will do at the end of the merge window.\n\nMany thanks to Julia Lawall for helping me learn to write a semantic\npatch that does all this.\n\n\u003d\u003d\u003d\u003d\u003d begin semantic patch \u003d\u003d\u003d\u003d\u003d\n// This adds an llseek\u003d method to all file operations,\n// as a preparation for making no_llseek the default.\n//\n// The rules are\n// - use no_llseek explicitly if we do nonseekable_open\n// - use seq_lseek for sequential files\n// - use default_llseek if we know we access f_pos\n// - use noop_llseek if we know we don\u0027t access f_pos,\n// but we still want to allow users to call lseek\n//\n@ open1 exists @\nidentifier nested_open;\n@@\nnested_open(...)\n{\n\u003c+...\nnonseekable_open(...)\n...+\u003e\n}\n\n@ open exists@\nidentifier open_f;\nidentifier i, f;\nidentifier open1.nested_open;\n@@\nint open_f(struct inode *i, struct file *f)\n{\n\u003c+...\n(\nnonseekable_open(...)\n|\nnested_open(...)\n)\n...+\u003e\n}\n\n@ read disable optional_qualifier exists @\nidentifier read_f;\nidentifier f, p, s, off;\ntype ssize_t, size_t, loff_t;\nexpression E;\nidentifier func;\n@@\nssize_t read_f(struct file *f, char *p, size_t s, loff_t *off)\n{\n\u003c+...\n(\n *off \u003d E\n|\n *off +\u003d E\n|\n func(..., off, ...)\n|\n E \u003d *off\n)\n...+\u003e\n}\n\n@ read_no_fpos disable optional_qualifier exists @\nidentifier read_f;\nidentifier f, p, s, off;\ntype ssize_t, size_t, loff_t;\n@@\nssize_t read_f(struct file *f, char *p, size_t s, loff_t *off)\n{\n... when !\u003d off\n}\n\n@ write @\nidentifier write_f;\nidentifier f, p, s, off;\ntype ssize_t, size_t, loff_t;\nexpression E;\nidentifier func;\n@@\nssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off)\n{\n\u003c+...\n(\n *off \u003d E\n|\n *off +\u003d E\n|\n func(..., off, ...)\n|\n E \u003d *off\n)\n...+\u003e\n}\n\n@ write_no_fpos @\nidentifier write_f;\nidentifier f, p, s, off;\ntype ssize_t, size_t, loff_t;\n@@\nssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off)\n{\n... when !\u003d off\n}\n\n@ fops0 @\nidentifier fops;\n@@\nstruct file_operations fops \u003d {\n ...\n};\n\n@ has_llseek depends on fops0 @\nidentifier fops0.fops;\nidentifier llseek_f;\n@@\nstruct file_operations fops \u003d {\n...\n .llseek \u003d llseek_f,\n...\n};\n\n@ has_read depends on fops0 @\nidentifier fops0.fops;\nidentifier read_f;\n@@\nstruct file_operations fops \u003d {\n...\n .read \u003d read_f,\n...\n};\n\n@ has_write depends on fops0 @\nidentifier fops0.fops;\nidentifier write_f;\n@@\nstruct file_operations fops \u003d {\n...\n .write \u003d write_f,\n...\n};\n\n@ has_open depends on fops0 @\nidentifier fops0.fops;\nidentifier open_f;\n@@\nstruct file_operations fops \u003d {\n...\n .open \u003d open_f,\n...\n};\n\n// use no_llseek if we call nonseekable_open\n////////////////////////////////////////////\n@ nonseekable1 depends on !has_llseek \u0026\u0026 has_open @\nidentifier fops0.fops;\nidentifier nso ~\u003d \"nonseekable_open\";\n@@\nstruct file_operations fops \u003d {\n... .open \u003d nso, ...\n+.llseek \u003d no_llseek, /* nonseekable */\n};\n\n@ nonseekable2 depends on !has_llseek @\nidentifier fops0.fops;\nidentifier open.open_f;\n@@\nstruct file_operations fops \u003d {\n... .open \u003d open_f, ...\n+.llseek \u003d no_llseek, /* open uses nonseekable */\n};\n\n// use seq_lseek for sequential files\n/////////////////////////////////////\n@ seq depends on !has_llseek @\nidentifier fops0.fops;\nidentifier sr ~\u003d \"seq_read\";\n@@\nstruct file_operations fops \u003d {\n... .read \u003d sr, ...\n+.llseek \u003d seq_lseek, /* we have seq_read */\n};\n\n// use default_llseek if there is a readdir\n///////////////////////////////////////////\n@ fops1 depends on !has_llseek \u0026\u0026 !nonseekable1 \u0026\u0026 !nonseekable2 \u0026\u0026 !seq @\nidentifier fops0.fops;\nidentifier readdir_e;\n@@\n// any other fop is used that changes pos\nstruct file_operations fops \u003d {\n... .readdir \u003d readdir_e, ...\n+.llseek \u003d default_llseek, /* readdir is present */\n};\n\n// use default_llseek if at least one of read/write touches f_pos\n/////////////////////////////////////////////////////////////////\n@ fops2 depends on !fops1 \u0026\u0026 !has_llseek \u0026\u0026 !nonseekable1 \u0026\u0026 !nonseekable2 \u0026\u0026 !seq @\nidentifier fops0.fops;\nidentifier read.read_f;\n@@\n// read fops use offset\nstruct file_operations fops \u003d {\n... .read \u003d read_f, ...\n+.llseek \u003d default_llseek, /* read accesses f_pos */\n};\n\n@ fops3 depends on !fops1 \u0026\u0026 !fops2 \u0026\u0026 !has_llseek \u0026\u0026 !nonseekable1 \u0026\u0026 !nonseekable2 \u0026\u0026 !seq @\nidentifier fops0.fops;\nidentifier write.write_f;\n@@\n// write fops use offset\nstruct file_operations fops \u003d {\n... .write \u003d write_f, ...\n+\t.llseek \u003d default_llseek, /* write accesses f_pos */\n};\n\n// Use noop_llseek if neither read nor write accesses f_pos\n///////////////////////////////////////////////////////////\n\n@ fops4 depends on !fops1 \u0026\u0026 !fops2 \u0026\u0026 !fops3 \u0026\u0026 !has_llseek \u0026\u0026 !nonseekable1 \u0026\u0026 !nonseekable2 \u0026\u0026 !seq @\nidentifier fops0.fops;\nidentifier read_no_fpos.read_f;\nidentifier write_no_fpos.write_f;\n@@\n// write fops use offset\nstruct file_operations fops \u003d {\n...\n .write \u003d write_f,\n .read \u003d read_f,\n...\n+.llseek \u003d noop_llseek, /* read and write both use no f_pos */\n};\n\n@ depends on has_write \u0026\u0026 !has_read \u0026\u0026 !fops1 \u0026\u0026 !fops2 \u0026\u0026 !has_llseek \u0026\u0026 !nonseekable1 \u0026\u0026 !nonseekable2 \u0026\u0026 !seq @\nidentifier fops0.fops;\nidentifier write_no_fpos.write_f;\n@@\nstruct file_operations fops \u003d {\n... .write \u003d write_f, ...\n+.llseek \u003d noop_llseek, /* write uses no f_pos */\n};\n\n@ depends on has_read \u0026\u0026 !has_write \u0026\u0026 !fops1 \u0026\u0026 !fops2 \u0026\u0026 !has_llseek \u0026\u0026 !nonseekable1 \u0026\u0026 !nonseekable2 \u0026\u0026 !seq @\nidentifier fops0.fops;\nidentifier read_no_fpos.read_f;\n@@\nstruct file_operations fops \u003d {\n... .read \u003d read_f, ...\n+.llseek \u003d noop_llseek, /* read uses no f_pos */\n};\n\n@ depends on !has_read \u0026\u0026 !has_write \u0026\u0026 !fops1 \u0026\u0026 !fops2 \u0026\u0026 !has_llseek \u0026\u0026 !nonseekable1 \u0026\u0026 !nonseekable2 \u0026\u0026 !seq @\nidentifier fops0.fops;\n@@\nstruct file_operations fops \u003d {\n...\n+.llseek \u003d noop_llseek, /* no read or write fn */\n};\n\u003d\u003d\u003d\u003d\u003d End semantic patch \u003d\u003d\u003d\u003d\u003d\n\nSigned-off-by: Arnd Bergmann \u003carnd@arndb.de\u003e\nCc: Julia Lawall \u003cjulia@diku.dk\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\n" }, { "commit": "bd55597520a2eaa0d71dd7683513a14bfd1bdf5c", "tree": "b99685fe2d9b6c9ad87b7d3e6a8fc47a5ac248ce", "parents": [ "d5c1515cf374951f07e5bf97b6ff3718d3401b6f" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Jun 07 11:35:40 2010 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Aug 09 16:48:22 2010 -0400" }, "message": "convert btrfs to -\u003eevict_inode()\n\nNB: do we want btrfs_wait_ordered_range() on eviction of\ninodes with positive i_nlink on subvolume with zero root_refs?\nIf not, btrfs_evict_inode() can be simplified by unconditionally\nbailing out in case of i_nlink \u003e 0 in the very beginning...\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "b25b550bb153626df6a48eb8583e923e3dfcf64a", "tree": "baca9843877b8b3a254cde92ac2a9072014b5621", "parents": [ "eda054770e5cd0e9ee1568dfcbcf39f9ade4f545", "6f902af400b2499c80865c62a06fbbd15cf804fd" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jun 11 14:18:47 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jun 11 14:18:47 2010 -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: The file argument for fsync() is never null\n Btrfs: handle ERR_PTR from posix_acl_from_xattr()\n Btrfs: avoid BUG when dropping root and reference in same transaction\n Btrfs: prohibit a operation of changing acl\u0027s mask when noacl mount option used\n Btrfs: should add a permission check for setfacl\n Btrfs: btrfs_lookup_dir_item() can return ERR_PTR\n Btrfs: btrfs_read_fs_root_no_name() returns ERR_PTRs\n Btrfs: unwind after btrfs_start_transaction() errors\n Btrfs: btrfs_iget() returns ERR_PTR\n Btrfs: handle kzalloc() failure in open_ctree()\n Btrfs: handle error returns from btrfs_lookup_dir_item()\n Btrfs: Fix BUG_ON for fs converted from extN\n Btrfs: Fix null dereference in relocation.c\n Btrfs: fix remap_file_pages error\n Btrfs: uninitialized data is check_path_shared()\n Btrfs: fix fallocate regression\n Btrfs: fix loop device on top of btrfs\n" }, { "commit": "4cbd1149fbcc351bdf08ab749867d157905d0d35", "tree": "7acb025997c961e594116596a135d023361ee603", "parents": [ "676e4c86391936795c82ccd11ca9671ee6307936" ], "author": { "name": "Dan Carpenter", "email": "error27@gmail.com", "time": "Sat May 29 09:42:19 2010 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Jun 11 15:57:35 2010 -0400" }, "message": "Btrfs: btrfs_iget() returns ERR_PTR\n\nbtrfs_iget() returns an ERR_PTR() on failure and not null.\n\nSigned-off-by: Dan Carpenter \u003cerror27@gmail.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "fb4f6f910ca6f58564c31a680ef88940d8192713", "tree": "ee83845c90ac3ec395ac670c7d87c83b0486de83", "parents": [ "3bf84a5a834d13e7c5c3e8e5b5c6b26012118dd8" ], "author": { "name": "Dan Carpenter", "email": "error27@gmail.com", "time": "Sat May 29 09:40:57 2010 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Jun 11 15:57:33 2010 -0400" }, "message": "Btrfs: handle error returns from btrfs_lookup_dir_item()\n\nIf btrfs_lookup_dir_item() fails, we should can just let the mount fail\nwith an error.\n\nSigned-off-by: Dan Carpenter \u003cerror27@gmail.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "105a048a4f35f7a74c7cc20b36dd83658b6ec232", "tree": "043b1110cda0042ba35d8aae59382bb094d0af3f", "parents": [ "00b9b0af5887fed54e899e3b7f5c2ccf5e739def", "9aeead73782c4b8e2a91def36dbf95db28605c95" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 10:43:44 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 10:43:44 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: (27 commits)\n Btrfs: add more error checking to btrfs_dirty_inode\n Btrfs: allow unaligned DIO\n Btrfs: drop verbose enospc printk\n Btrfs: Fix block generation verification race\n Btrfs: fix preallocation and nodatacow checks in O_DIRECT\n Btrfs: avoid ENOSPC errors in btrfs_dirty_inode\n Btrfs: move O_DIRECT space reservation to btrfs_direct_IO\n Btrfs: rework O_DIRECT enospc handling\n Btrfs: use async helpers for DIO write checksumming\n Btrfs: don\u0027t walk around with task-\u003estate !\u003d TASK_RUNNING\n Btrfs: do aio_write instead of write\n Btrfs: add basic DIO read/write support\n direct-io: do not merge logically non-contiguous requests\n direct-io: add a hook for the fs to provide its own submit_bio function\n fs: allow short direct-io reads to be completed via buffered IO\n Btrfs: Metadata ENOSPC handling for balance\n Btrfs: Pre-allocate space for data relocation\n Btrfs: Metadata ENOSPC handling for tree log\n Btrfs: Metadata reservation for orphan inodes\n Btrfs: Introduce global metadata reservation\n ...\n" }, { "commit": "578454ff7eab61d13a26b568f99a89a2c9edc881", "tree": "6abdaf9acdd797767c92cb53e04574d3c755779e", "parents": [ "ec96e2fe954c23a54bfdf2673437a39e193a1822" ], "author": { "name": "Kay Sievers", "email": "kay.sievers@vrfy.org", "time": "Thu May 20 18:07:20 2010 +0200" }, "committer": { "name": "Greg Kroah-Hartman", "email": "gregkh@suse.de", "time": "Tue May 25 15:08:26 2010 -0700" }, "message": "driver core: add devname module aliases to allow module on-demand auto-loading\n\nThis adds:\n alias: devname:\u003cname\u003e\nto some common kernel modules, which will allow the on-demand loading\nof the kernel module when the device node is accessed.\n\nIdeally all these modules would be compiled-in, but distros seems too\nmuch in love with their modularization that we need to cover the common\ncases with this new facility. It will allow us to remove a bunch of pretty\nuseless init scripts and modprobes from init scripts.\n\nThe static device node aliases will be carried in the module itself. The\nprogram depmod will extract this information to a file in the module directory:\n $ cat /lib/modules/2.6.34-00650-g537b60d-dirty/modules.devname\n # Device nodes to trigger on-demand module loading.\n microcode cpu/microcode c10:184\n fuse fuse c10:229\n ppp_generic ppp c108:0\n tun net/tun c10:200\n dm_mod mapper/control c10:235\n\nUdev will pick up the depmod created file on startup and create all the\nstatic device nodes which the kernel modules specify, so that these modules\nget automatically loaded when the device node is accessed:\n $ /sbin/udevd --debug\n ...\n static_dev_create_from_modules: mknod \u0027/dev/cpu/microcode\u0027 c10:184\n static_dev_create_from_modules: mknod \u0027/dev/fuse\u0027 c10:229\n static_dev_create_from_modules: mknod \u0027/dev/ppp\u0027 c108:0\n static_dev_create_from_modules: mknod \u0027/dev/net/tun\u0027 c10:200\n static_dev_create_from_modules: mknod \u0027/dev/mapper/control\u0027 c10:235\n udev_rules_apply_static_dev_perms: chmod \u0027/dev/net/tun\u0027 0666\n udev_rules_apply_static_dev_perms: chmod \u0027/dev/fuse\u0027 0666\n\nA few device nodes are switched to statically allocated numbers, to allow\nthe static nodes to work. This might also useful for systems which still run\na plain static /dev, which is completely unsafe to use with any dynamic minor\nnumbers.\n\nNote:\nThe devname aliases must be limited to the *common* and *single*instance*\ndevice nodes, like the misc devices, and never be used for conceptually limited\nsystems like the loop devices, which should rather get fixed properly and get a\ncontrol node for losetup to talk to, instead of creating a random number of\ndevice nodes in advance, regardless if they are ever used.\n\nThis facility is to hide the mess distros are creating with too modualized\nkernels, and just to hide that these modules are not compiled-in, and not to\npaper-over broken concepts. Thanks! :)\n\nCc: Greg Kroah-Hartman \u003cgregkh@suse.de\u003e\nCc: David S. Miller \u003cdavem@davemloft.net\u003e\nCc: Miklos Szeredi \u003cmiklos@szeredi.hu\u003e\nCc: Chris Mason \u003cchris.mason@oracle.com\u003e\nCc: Alasdair G Kergon \u003cagk@redhat.com\u003e\nCc: Tigran Aivazian \u003ctigran@aivazian.fsnet.co.uk\u003e\nCc: Ian Kent \u003craven@themaw.net\u003e\nSigned-Off-By: Kay Sievers \u003ckay.sievers@vrfy.org\u003e\nSigned-off-by: Greg Kroah-Hartman \u003cgregkh@suse.de\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": "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": "b742bb82f1676d50103ade0ba89bfb79debabe73", "tree": "ceac53988a3c158571fb91d54e3027403363fb47", "parents": [ "e40152ee1e1c7a63f4777791863215e3faa37a86" ], "author": { "name": "Yan, Zheng", "email": "zheng.yan@oracle.com", "time": "Sun May 16 10:46:24 2010 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Tue May 25 10:34:47 2010 -0400" }, "message": "Btrfs: Link block groups of different raid types\n\nThe size of reserved space is stored in space_info. If block groups\nof different raid types are linked to separate space_info, changing\nallocation profile will corrupt reserved space accounting.\n\nSigned-off-by: Yan Zheng \u003czheng.yan@oracle.com\u003e\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": "287a0ab91d25ca982f895a76402e5893b47ed7a6", "tree": "fcbe35daef2b4cbdc2bfc0c6026e7c45faef0245", "parents": [ "1b1d1f6625e517a08640ddb4b8f8a0e025243fe3" ], "author": { "name": "Josef Bacik", "email": "josef@redhat.com", "time": "Fri Mar 19 18:07:23 2010 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Tue Mar 30 21:19:09 2010 -0400" }, "message": "Btrfs: kill max_extent mount option\n\nAs Yan pointed out, theres not much reason for all this complicated math to\naccount for file extents being split up into max_extent chunks, since they are\nlikely to all end up in the same leaf anyway. Since there isn\u0027t much reason to\nuse max_extent, just remove the option altogether so we have one less thing we\nneed to test.\n\nSigned-off-by: Josef Bacik \u003cjosef@redhat.com\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": "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": "bd4d10888990f7e3f8029205d27eb155202d6969", "tree": "dd8bfee4173f6bb5d0170768157e2a024bff34e1", "parents": [ "3a0524dc054791688177544fe510d2868ee20d9f" ], "author": { "name": "Josef Bacik", "email": "josef@redhat.com", "time": "Fri Mar 05 21:59:21 2010 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Mon Mar 15 11:00:11 2010 -0400" }, "message": "Btrfs: make df be a little bit more understandable\n\nThe way we report df usage is way confusing for everybody, including some other\nutilities (bacula for one). So this patch makes df a little bit more\nunderstandable. First we make used actually count the total amount of used\nspace in all space info\u0027s. This will give us a real view of how much disk space\nis in use. Second, for blocks available, only count data space. This makes\nthings like bacula work because it says 0 when you can no longer write anymore\ndata to the disk. I think this is a nice compromise, since you will end up with\nsomething like the following\n\n[root@alpha ~]# df -h\nFilesystem Size Used Avail Use% Mounted on\n/dev/mapper/VolGroup-lv_root\n 148G 30G 111G 21% /\n/dev/sda1 194M 116M 68M 64% /boot\ntmpfs 985M 12K 985M 1% /dev/shm\n/dev/mapper/VolGroup-LogVol02\n 145G 140G 0 100% /mnt/btrfs-test\n\nCompare this with btrfsctl -i output\n\n[root@alpha btrfs-progs-unstable]# ./btrfsctl -i /mnt/btrfs-test/\nMetadata, DUP: total\u003d4.62GB, used\u003d2.46GB\nSystem, DUP: total\u003d8.00MB, used\u003d24.00KB\nData: total\u003d134.80GB, used\u003d134.80GB\nMetadata: total\u003d8.00MB, used\u003d0.00\nSystem: total\u003d4.00MB, used\u003d0.00\noperation complete\n\nThis way we show that there is no more data space to be used, but we have\nanother 5GB of space left for metadata. Thanks,\n\nSigned-off-by: Josef Bacik \u003cjosef@redhat.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "4849f01d153be0f52b8191ee1be0ce492aa96811", "tree": "39da0f94d126899f095a9f2b23bb3e38aa90bf46", "parents": [ "6ef5ed0d386be5c43ec66d6f2999919c0893558b" ], "author": { "name": "Josef Bacik", "email": "josef@redhat.com", "time": "Mon Dec 14 19:18:38 2009 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Mon Mar 15 11:00:09 2010 -0400" }, "message": "Btrfs: make subvolid\u003d0 mount the original default root\n\nSince theres not a good way to make sure the user sees the original default root\ntree id, and not to mention it\u0027s 5 so is way different than any other volume,\njust make subvol\u003d0 mount the original default root. This makes it a bit easier\nfor users to handle in the long run. Thanks,\n\nSigned-off-by: Josef Bacik \u003cjosef@redhat.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "73f73415caddbc01d9f10c03e0a677d5b3d11569", "tree": "249ef103a73e8d99efe409b7988b694537b3d6ad", "parents": [ "12534832cb7b0abc7369298246e8b7af03b863ca" ], "author": { "name": "Josef Bacik", "email": "josef@redhat.com", "time": "Fri Dec 04 17:38:27 2009 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Mon Mar 15 10:58:13 2010 -0400" }, "message": "Btrfs: change how we mount subvolumes\n\nThis work is in preperation for being able to set a different root as the\ndefault mounting root.\n\nThere is currently a problem with how we mount subvolumes. We cannot currently\nmount a subvolume of a subvolume, you can only mount subvolumes/snapshots of the\ndefault subvolume. So say you take a snapshot of the default subvolume and call\nit snap1, and then take a snapshot of snap1 and call it snap2, so now you have\n\n/\n/snap1\n/snap1/snap2\n\nas your available volumes. Currently you can only mount / and /snap1,\nyou cannot mount /snap1/snap2. To fix this problem instead of passing\nsubvolid\u003d\u003cname\u003e you must pass in subvolid\u003d\u003ctreeid\u003e, where \u003ctreeid\u003e is\nthe tree id that gets spit out via the subvolume listing you get from\nthe subvolume listing patches (btrfs filesystem list). This allows us\nto mount /, /snap1 and /snap1/snap2 as the root volume.\n\nIn addition to the above, we also now read the default dir item in the\ntree root to get the root key that it points to. For now this just\npoints at what has always been the default subvolme, but later on I plan\nto change it to point at whatever root you want to be the new default\nroot, so you can just set the default mount and not have to mount with\n-o subvolid\u003d\u003ctreeid\u003e. I tested this out with the above scenario and it\nworked perfectly. Thanks,\n\nmount -o subvol operates inside the selected subvolid. For example:\n\nmount -o subvol\u003dsnap1,subvolid\u003d256 /dev/xxx /mnt\n\n/mnt will have the snap1 directory for the subvolume with id\n256.\n\nmount -o subvol\u003dsnap /dev/xxx /mnt\n\n/mnt will be the snap directory of whatever the default subvolume\nis.\n\nSigned-off-by: Josef Bacik \u003cjosef@redhat.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "da495ecc0fb096b383754952a1c152147bc95b52", "tree": "beec70bea515038c849c1b34836bba2455d90f2b", "parents": [ "6bef4d317193d3badbbfa3f3c593758ace84a629" ], "author": { "name": "Josef Bacik", "email": "josef@redhat.com", "time": "Thu Feb 25 20:38:35 2010 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Mon Mar 08 16:26:50 2010 -0500" }, "message": "Btrfs: kfree correct pointer during mount option parsing\n\nWe kstrdup the options string, but then strsep screws with the pointer,\nso when we kfree() it, we\u0027re not giving it the right pointer.\n\nTested-by: Andy Lutomirski \u003cluto@mit.edu\u003e\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "a555f810af6d63ea5960abaed88e150ad95c3011", "tree": "643fd3e94c352dc0006ff9333de8b7b4dc2b8785", "parents": [ "11dfe35a0108097f2df1f042c485fa7f758c2cdf" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Jan 28 16:18:15 2010 -0500" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Jan 28 16:18:15 2010 -0500" }, "message": "Btrfs: Add mount -o compress-force\n\nThe default btrfs mount -o compress mode will quickly back off\ncompressing a file if it notices that compression does not reduce the\nsize of the data being written. This can save considerable CPU because\nall future writes to the file go through uncompressed.\n\nBut some files are both very large and have mixed data stored in\nthem. In that case, we want to add the ability to always try\ncompressing data before writing it.\n\nThis commit adds mount -o compress-force. A later commit will add\na new inode flag that does the same thing.\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "20a5239a5d0f340e29827a6a2d28a138001c44b8", "tree": "d7087f74dc609e3ca9d06aeb2714125e51f443cc", "parents": [ "4a8be425a8fb8fbb5d881eb55fa6634c3463b9c9" ], "author": { "name": "Matthew Wilcox", "email": "matthew@wil.cx", "time": "Mon Dec 14 22:01:12 2009 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Dec 17 12:33:37 2009 -0500" }, "message": "Btrfs: Show discard option in /proc/mounts\n\nChristoph\u0027s patch e244a0aeb6a599c19a7c802cda6e2d67c847b154 doesn\u0027t display\nthe discard option in /proc/mounts, leading to some confusion for me.\nHere\u0027s the missing bit.\n\nSigned-off-by: Matthew Wilcox \u003cwilly@linux.intel.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "a7a3f7cadd9bdee569243f7ead9550aa16b60e07", "tree": "c9ccc035bf08e6698e1cf56888f563393226d880", "parents": [ "06b2331f8333ec6edf41662757ce8882cc1747d5" ], "author": { "name": "Sage Weil", "email": "sage@newdream.net", "time": "Sat Nov 07 06:19:16 2009 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Dec 17 12:33:36 2009 -0500" }, "message": "Btrfs: fail mount on bad mount options\n\nWe shouldn\u0027t silently ignore unrecognized options.\n\nSigned-off-by: Sage Weil \u003csage@newdream.net\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "24bbcf0442ee04660a5a030efdbb6d03f1c275cb", "tree": "aa57d77d29cc5150b272cc3f6465f10262fcbaac", "parents": [ "f34f57a3ab4e73304d78c125682f1a53cd3975f2" ], "author": { "name": "Yan, Zheng", "email": "zheng.yan@oracle.com", "time": "Thu Nov 12 09:36:34 2009 +0000" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Dec 17 12:33:35 2009 -0500" }, "message": "Btrfs: Add delayed iput\n\niput() can trigger new transactions if we are dropping the\nfinal reference, so calling it in btrfs_commit_transaction\nmay end up deadlock. This patch adds delayed iput to avoid\nthe issue.\n\nSigned-off-by: Yan Zheng \u003czheng.yan@oracle.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "dcbeb0bec5f2695c3ff53f174efb8e03c209f3f3", "tree": "30d223a3a3c7470c657284ef030657bd1753d4d3", "parents": [ "2b650df2cea96e487f2fd9ecaa68e533ea9b5ed7", "444528b3e614f7f2391488d9bca8e0b872db909b" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 15 15:06:37 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 15 15:06:37 2009 -0700" }, "message": "Merge branch \u0027master\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable\n\n* \u0027master\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:\n Btrfs: always pin metadata in discard mode\n Btrfs: enable discard support\n Btrfs: add -o discard option\n Btrfs: properly wait log writers during log sync\n Btrfs: fix possible ENOSPC problems with truncate\n Btrfs: fix btrfs acl #ifdef checks\n Btrfs: streamline tree-log btree block writeout\n Btrfs: avoid tree log commit when there are no changes\n Btrfs: only write one super copy during fsync\n" }, { "commit": "e244a0aeb6a599c19a7c802cda6e2d67c847b154", "tree": "392d8d48c4e6676a552230135ad448d522007ece", "parents": [ "86df7eb921a009515285e7171363fa57dd2d7d31" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Wed Oct 14 09:24:59 2009 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Wed Oct 14 10:32:49 2009 -0400" }, "message": "Btrfs: add -o discard option\n\nEnable discard by default is not a good idea given the the trim speed\nof SSD prototypes we\u0027ve seen, and the carecteristics for many high-end\narrays. Turn of discards by default and require the -o discard option\nto enable them on.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "0eda294dfc980c1cbe4f8a0564bf543f86a01ddb", "tree": "478b0abfda753196fcb8842d002e5bb600051618", "parents": [ "690587d109ffe19d6743e4cc80c18b0906b7f9ff" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Tue Oct 13 13:50:18 2009 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Tue Oct 13 13:51:39 2009 -0400" }, "message": "Btrfs: fix btrfs acl #ifdef checks\n\nThe btrfs acl code was #ifdefing for a define\nthat didn\u0027t exist. This correctly matches it\nto the values used by the Kconfig file.\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "25472b880c69c0daa485c4f80a6550437ed1149f", "tree": "d12bc091e8991513db0d2891111ba773eb5c52e2", "parents": [ "17d857be649a21ca90008c6dc425d849fa83db5c", "ab93dbecfba72bbc04b7036343d180aaff1b61a3" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Oct 01 12:58:13 2009 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Oct 01 12:58:13 2009 -0400" }, "message": "Merge branch \u0027master\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable into for-linus\n" }, { "commit": "49cf6f4529b7945ef51b8e39f0bac630726f8c96", "tree": "27c91f6bb1ac0e4862286e78d1365e2890754cef", "parents": [ "9ed74f2dba6ebf9f30b80554290bfc73cc3ef083" ], "author": { "name": "Chris Ball", "email": "cjb@laptop.org", "time": "Tue Sep 29 13:51:04 2009 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Tue Sep 29 13:51:04 2009 -0400" }, "message": "Btrfs: Fix setting umask when POSIX ACLs are not enabled\n\nWe currently set sb-\u003es_flags |\u003d MS_POSIXACL unconditionally, which is\nincorrect -- it tells the VFS that it shouldn\u0027t set umask because we\nwill, yet we don\u0027t set it ourselves if we aren\u0027t using POSIX ACLs, so\nthe umask ends up ignored.\n\nSigned-off-by: Chris Ball \u003ccjb@laptop.org\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "54bcf382daf08c1396edb8b81e650b58930ccaef", "tree": "64b941f09489b5c9ee63e4ad43d736bfce911b21", "parents": [ "94a8d5caba74211ec76dac80fc6e2d5c391530df", "c65ddb52dc412c9b67681b1aa16cd1bac8434e24" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Sep 24 10:00:58 2009 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Sep 24 10:00:58 2009 -0400" }, "message": "Merge branch \u0027master\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable into for-linus\n\nConflicts:\n\tfs/btrfs/super.c\n" }, { "commit": "b87221de6a4934eda856475a0065688d12973a04", "tree": "6bcf0628e106c4833538f4c23d710fbbe3d7609a", "parents": [ "0d54b217a247f39605361f867fefbb9e099a5432" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Mon Sep 21 17:01:09 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Sep 22 07:17:24 2009 -0700" }, "message": "const: mark remaining super_operations const\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "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": "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": "5af7926ff33b68b3ba46531471c6e0564b285efc", "tree": "a25266f9db482ce9dd8e663148ffb0f1a524bd83", "parents": [ "e5004753388dcf5e1b8a52ac0ab807d232340fbb" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Tue May 05 15:41:25 2009 +0200" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Thu Jun 11 21:36:06 2009 -0400" }, "message": "enforce -\u003esync_fs is only called for rw superblock\n\nMake sure a superblock really is writeable by checking MS_RDONLY\nunder s_umount. sync_filesystems needed some re-arragement for\nthat, but all but one sync_filesystem caller had the correct locking\nalready so that we could add that check there. cachefiles grew\ns_umount locking.\n\nI\u0027ve also added a WARN_ON to sync_filesystem to assert this for\nfuture callers.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "59d697b70285c348c01cfc2695c3469ba71d7539", "tree": "e383e5a2c0fc6196bed269aac032d3e363e9c4f7", "parents": [ "c3f8a40c1cd5591b882497d1d00d43d0e5bb4698" ], "author": { "name": "Christoph Hellwig", "email": "hch@infradead.org", "time": "Mon Apr 27 09:46:41 2009 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Thu Jun 11 21:36:05 2009 -0400" }, "message": "btrfs: remove -\u003ewrite_super and stop maintaining -\u003es_dirt\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "067c28adc53807514ac0c6ebb6af3243cbd071fa", "tree": "fa3e60e01cb2ba71fd9f3ab5d29147bc3fe781a1", "parents": [ "85d4198e40c289dd623cecd16601fa613559bed7" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Jun 11 09:30:13 2009 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Jun 11 09:30:13 2009 -0400" }, "message": "Btrfs: fix -o nodatasum printk spelling\n\nIt was printing nodatacsum, which was not the correct option name.\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "c289811cc096c57ff35550ee8132793a4f9b5b59", "tree": "47599d47419911c8365e0350e286dece1d5e48dd", "parents": [ "451d7585a8bb1b9bec0d676ce3dece1923164e55" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Wed Jun 10 09:51:32 2009 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Wed Jun 10 11:29:52 2009 -0400" }, "message": "Btrfs: autodetect SSD devices\n\nDuring mount, btrfs will check the queue nonrot flag\nfor all the devices found in the FS. If they are all\nnon-rotating, SSD mode is enabled by default.\n\nIf the FS was mounted with -o nossd, the non-rotating\nflag is ignored.\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "451d7585a8bb1b9bec0d676ce3dece1923164e55", "tree": "b4e9103b7010e45e02deff9ae4470df71475f8de", "parents": [ "c604480171c510c1beeb81b82418e5bc4de8f1ae" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Tue Jun 09 20:28:34 2009 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Wed Jun 10 11:29:52 2009 -0400" }, "message": "Btrfs: add mount -o ssd_spread to spread allocations out\n\nSome SSDs perform best when reusing block numbers often, while\nothers perform much better when clustering strictly allocates\nbig chunks of unused space.\n\nThe default mount -o ssd will find rough groupings of blocks\nwhere there are a bunch of free blocks that might have some\nallocated blocks mixed in.\n\nmount -o ssd_spread will make sure there are no allocated blocks\nmixed in. It should perform better on lower end SSDs.\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "3b30c22f64a6bb297719c60e494af1d26563f584", "tree": "2730226cb21de6c61f6d1fb265c64523e0073354", "parents": [ "d644d8a1e30b88a93bcfb63cada2ae628462ddba" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Tue Jun 09 16:42:22 2009 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Wed Jun 10 11:29:50 2009 -0400" }, "message": "Btrfs: Add mount -o nossd\n\nThis allows you to turn off the ssd mode via remount.\n\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": "6b65c5c61bf86086817a5ed786c8f45755ac83b3", "tree": "a5991f92b4ea22aba4f2042c893446462b47d2df", "parents": [ "5d847a8ed970d17e2734ff9e07a74fe36cceb24e" ], "author": { "name": "Sage Weil", "email": "sage@newdream.net", "time": "Thu May 14 13:52:21 2009 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu May 14 14:00:34 2009 -0400" }, "message": "Btrfs: make show_options result match actual option names\n\nThe notreelog and flushoncommit mount options were being printed slightly\ndifferently.\n\nSigned-off-by: Sage Weil \u003csage@newdream.net\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "6f5bbff9a1b7d6864a495763448a363bbfa96324", "tree": "0067dca46f40def1c55541c34c262e06aeb8c4c8", "parents": [ "74dbbdd7fdc11763f4698d2f3e684cf4446951e6" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed May 06 01:34:22 2009 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sat May 09 10:49:40 2009 -0400" }, "message": "Convert obvious places to deactivate_locked_super()\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\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": "97e728d4353f38c87bf0804cdfd79a9b13fc2c3e", "tree": "853d3317ff1476e4ad28921265e28b4919196304", "parents": [ "546888da82082555a56528730a83f0afd12f33bf" ], "author": { "name": "Josef Bacik", "email": "jbacik@redhat.com", "time": "Tue Apr 21 17:40:57 2009 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Fri Apr 24 15:46:02 2009 -0400" }, "message": "Btrfs: try to keep a healthy ratio of metadata vs data block groups\n\nThis patch makes the chunk allocator keep a good ratio of metadata vs data\nblock groups. By default for every 8 data block groups, we\u0027ll allocate 1\nmetadata chunk, or about 12% of the disk will be allocated for metadata. This\ncan be changed by specifying the metadata_ratio mount option.\n\nThis is simply the number of data block groups that have to be allocated to\nforce a metadata chunk allocation. By making sure we allocate metadata chunks\nmore often, we are less likely to get into situations where the whole disk\nhas been allocated as data block groups.\n\nSigned-off-by: Josef Bacik \u003cjbacik@redhat.com\u003e\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": "dccae99995089641fbac452ebc7f0cab18751ddb", "tree": "c8f3611cc62baa6fa02baff18374d8f3a61b06bf", "parents": [ "3a5e14048a0a81276d284cbda441507a17e26147" ], "author": { "name": "Sage Weil", "email": "sage@newdream.net", "time": "Thu Apr 02 16:59:01 2009 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Apr 02 16:59:01 2009 -0400" }, "message": "Btrfs: add flushoncommit mount option\n\nThe \u0027flushoncommit\u0027 mount option forces any data dirtied by a write in a\nprior transaction to commit as part of the current commit. This makes\nthe committed state a fully consistent view of the file system from the\napplication\u0027s perspective (i.e., it includes all completed file system\noperations). This was previously the behavior only when a snapshot is\ncreated.\n\nThis is used by Ceph to ensure that completed writes make it to the\nplatter along with the metadata operations they are bound to (by\nBTRFS_IOC_TRANS_{START,END}).\n\nSigned-off-by: Sage Weil \u003csage@newdream.net\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n\n" }, { "commit": "3a5e14048a0a81276d284cbda441507a17e26147", "tree": "42464c2455216b008bf27c13496d001bb85d3564", "parents": [ "a9572a15a854bd40453a6b7b4dd9d29132f64c64" ], "author": { "name": "Sage Weil", "email": "sage@newdream.net", "time": "Thu Apr 02 16:49:40 2009 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Apr 02 16:49:40 2009 -0400" }, "message": "Btrfs: notreelog mount option\n\nAdd a \u0027notreelog\u0027 mount option to disable the tree log (used by fsync,\nO_SYNC writes). This is much slower, but the tree logging produces\ninconsistent views into the FS for ceph.\n\nSigned-off-by: Sage Weil \u003csage@newdream.net\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n\n" }, { "commit": "a9572a15a854bd40453a6b7b4dd9d29132f64c64", "tree": "36eb4ee3be45a4d622da2f103e571894a60c3c13", "parents": [ "fa9c0d795f7b57c76560b7fac703f5d341210e28" ], "author": { "name": "Eric Paris", "email": "eparis@redhat.com", "time": "Thu Apr 02 16:46:06 2009 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Apr 02 16:46:06 2009 -0400" }, "message": "Btrfs: introduce btrfs_show_options\n\nbtrfs options can change at times other than mount, yet /proc/mounts shows the\noptions string used when the fs was mounted (an example would be when btrfs\ndetermines that barriers aren\u0027t useful and turns them off.) This patch\ninstead outputs the actual options in use by btrfs.\n\nSigned-off-by: Eric Paris \u003ceparis@redhat.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n\n" }, { "commit": "e1df36d2f18254d0690a0fbe036cece74ec311b8", "tree": "34823b4533c7fe2d5a329a03b99faa6bd0a88956", "parents": [ "536ac8ae86e68bb5574d7cc81c7d229a86b82601" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Feb 12 09:45:08 2009 -0500" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Feb 12 09:45:08 2009 -0500" }, "message": "Btrfs: don\u0027t clean old snapshots on sync(1)\n\nCleaning old snapshots can make sync(1) somewhat slow, and some users\nand applications still use it in a global fsync kind of workload.\n\nThis patch changes btrfs not to clean old snapshots during sync, which is\nsafe from a FS consistency point of view. The major downside is that it\nmakes it difficult to tell when old snapshots have been reaped and\nthe space they were using has been reclaimed. A new ioctl will be added\nfor this purpose instead.\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n\n" }, { "commit": "b288052e1779261ae80138074989ef50358c4e58", "tree": "58c2a8e3bd4208c9b49f471f33303c88bdc20606", "parents": [ "eb099670895f22970cd143875467c2768d6d87e5" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Feb 12 09:37:35 2009 -0500" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Thu Feb 12 09:37:35 2009 -0500" }, "message": "Btrfs: process mount options on mount -o remount,\n\nBtrfs wasn\u0027t parsing any new mount options during remount, making it\ndifficult to set mount options on a root drive.\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n\n" }, { "commit": "e4f722fa42537bcb0ff14322a57dc3870d093cab", "tree": "315920ade3b68bf20c4080bcd1bf2bc34a5d5ab7", "parents": [ "18e352e4a73465349711a9324767e1b2453383e2", "a717531942f488209dded30f6bc648167bcefa72" ], "author": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Wed Jan 28 20:29:43 2009 -0500" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Wed Jan 28 20:29:43 2009 -0500" }, "message": "Merge branch \u0027master\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable\n\nFix fs/btrfs/super.c conflict around #includes\n" } ], "next": "7eaebe7d503c3ef240ac7b3efc5433fe647c0298" }