Filipe Manana dcc82f4783 Btrfs: fix log tree corruption when fs mounted with -o discard ... While committing a transaction we free the log roots before we write the new super block. Freeing the log roots implies marking the disk location of every node/leaf (metadata extent) as pinned before the new super block is written. This is to prevent the disk location of log metadata extents from being reused before the new super block is written, otherwise we would have a corrupted log tree if before the new super block is written a crash/reboot happens and the location of any log tree metadata extent ended up being reused and rewritten. Even though we pinned the log tree's metadata extents, we were issuing a discard against them if the fs was mounted with the -o discard option, resulting in corruption of the log tree if a crash/reboot happened before writing the new super block - the next time the fs was mounted, during the log replay process we would find nodes/leafs of the log btree with a content full of zeroes, causing the process to fail and require the use of the tool btrfs-zero-log to wipeout the log tree (and all data previously fsynced becoming lost forever). Fix this by not doing a discard when pinning an extent. The discard will be done later when it's safe (after the new super block is committed) at extent-tree.c:btrfs_finish_extent_commit(). Fixes: e688b7252f (Btrfs: fix extent pinning bugs in the tree log) CC: <stable@vger.kernel.org> Signed-off-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: Chris Mason <clm@fb.com>		2015-03-26 17:56:24 -07:00
..
tests	Btrfs: add sanity test for outstanding_extents accounting	2015-03-17 16:36:31 -04:00
acl.c	btrfs: remove useless ACL check	2014-06-09 17:20:42 -07:00
async-thread.c	btrfs: use correct type for workqueue flags	2015-02-16 18:48:47 +01:00
async-thread.h	btrfs: use correct type for workqueue flags	2015-02-16 18:48:47 +01:00
backref.c	btrfs: use explicit initializer for seq_elem	2015-03-03 17:23:59 +01:00
backref.h	btrfs: cleanup, remove inode_item_info helper	2015-01-14 19:23:47 +01:00
btrfs_inode.h	Btrfs: fix metadata inconsistencies after directory fsync	2015-03-26 17:56:23 -07:00
check-integrity.c	Merge branch 'cleanups-post-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.1	2015-03-25 10:52:48 -07:00
check-integrity.h	block: submit_bio_wait() conversions	2013-11-24 16:33:41 -07:00
compression.c	Merge branch 'cleanups-post-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.1	2015-03-25 10:52:48 -07:00
compression.h	btrfs: constify structs with op functions or static definitions	2015-02-16 18:48:44 +01:00
ctree.c	Merge branch 'cleanups-post-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.1	2015-03-25 10:52:48 -07:00
ctree.h	Merge branch 'cleanups-post-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.1	2015-03-25 10:52:48 -07:00
delayed-inode.c	Btrfs: delayed-inode: replace root args iff only fs_info used	2015-02-16 18:48:43 +01:00
delayed-inode.h	Btrfs: introduce the delayed inode ref deletion for the single link inode	2014-01-28 13:20:09 -08:00
delayed-ref.c	Btrfs: rework qgroup accounting	2014-06-09 17:20:48 -07:00
delayed-ref.h	Btrfs: rework qgroup accounting	2014-06-09 17:20:48 -07:00
dev-replace.c	btrfs: cleanup 64bit/32bit divs, compile time constants	2015-03-03 17:23:57 +01:00
dev-replace.h	Btrfs: add new sources for device replace code	2012-12-12 17:15:41 -05:00
dir-item.c	Btrfs: make xattr replace operations atomic	2014-11-20 17:20:07 -08:00
disk-io.c	Merge branch 'cleanups-post-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.1	2015-03-25 10:52:48 -07:00
disk-io.h	Btrfs: disk-io: replace root args iff only fs_info used	2015-02-16 18:48:43 +01:00
export.c	btrfs: kill the key type accessor helpers	2014-09-17 13:37:12 -07:00
export.h
extent_io.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs	2015-03-21 10:53:37 -07:00
extent_io.h	btrfs: constify structs with op functions or static definitions	2015-02-16 18:48:44 +01:00
extent_map.c	Btrfs: do not move em to modified list when unpinning	2014-11-21 11:59:54 -08:00
extent_map.h	Btrfs: fix NULL pointer crash when running balance and scrub concurrently	2014-06-19 14:20:55 -07:00
extent-tree.c	Btrfs: fix log tree corruption when fs mounted with -o discard	2015-03-26 17:56:24 -07:00
file-item.c	Merge branch 'cleanups-post-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.1	2015-03-25 10:52:48 -07:00
file.c	Btrfs: fix metadata inconsistencies after directory fsync	2015-03-26 17:56:23 -07:00
free-space-cache.c	btrfs: replace remaining do_div calls with div_u64 variants	2015-03-03 17:24:01 +01:00
free-space-cache.h	Btrfs: fix race between writing free space cache and trimming	2014-12-02 18:35:09 -08:00
hash.c	btrfs: LLVMLinux: Remove VLAIS	2014-10-14 10:51:22 +02:00
hash.h	Btrfs: fix btrfs boot when compiled as built-in	2014-01-28 13:20:31 -08:00
inode-item.c	Btrfs: fix fsync log replay for inodes with a mix of regular refs and extrefs	2015-01-21 18:02:05 -08:00
inode-map.c	Btrfs: fix race between writing free space cache and trimming	2014-12-02 18:35:09 -08:00
inode-map.h
inode.c	Merge branch 'cleanups-for-4.1-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.1	2015-03-25 10:43:16 -07:00
ioctl.c	Merge branch 'cleanups-for-4.1-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.1	2015-03-25 10:43:16 -07:00
Kconfig	rcu: Make SRCU optional by using CONFIG_SRCU	2015-01-06 11:04:29 -08:00
locking.c	btrfs: fix lockups from btrfs_clear_path_blocking	2014-11-19 10:34:35 -08:00
locking.h	btrfs: fix lockups from btrfs_clear_path_blocking	2014-11-19 10:34:35 -08:00
lzo.c	btrfs: constify structs with op functions or static definitions	2015-02-16 18:48:44 +01:00
Makefile	Btrfs: add sanity tests for new qgroup accounting code	2014-06-09 17:20:49 -07:00
math.h	btrfs: cleanup 64bit/32bit divs, compile time constants	2015-03-03 17:23:57 +01:00
ordered-data.c	Btrfs: fix fsync race leading to ordered extent memory leaks	2015-03-02 14:04:44 -08:00
ordered-data.h	Btrfs: collect only the necessary ordered extents on ranged fsync	2014-11-21 11:59:56 -08:00
orphan.c	btrfs: kill the key type accessor helpers	2014-09-17 13:37:12 -07:00
print-tree.c	btrfs: remove parameter blocksize from read_tree_block	2014-10-02 17:14:50 +02:00
print-tree.h	btrfs: make static code static & remove dead code	2013-05-06 15:55:23 -04:00
props.c	btrfs: constify structs with op functions or static definitions	2015-02-16 18:48:44 +01:00
props.h	Btrfs: add support for inode properties	2014-01-28 13:20:24 -08:00
qgroup.c	Btrfs: change the insertion criteria for the qgroup operations rbtree	2015-03-26 17:55:52 -07:00
qgroup.h	btrfs: qgroup: account shared subtrees during snapshot delete	2014-08-15 07:43:14 -07:00
raid56.c	Merge branch 'cleanups-post-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.1	2015-03-25 10:52:48 -07:00
raid56.h	Btrfs: Make raid_map array be inlined in btrfs_bio structure	2015-01-21 18:06:47 -08:00
rcu-string.h	Btrfs: use rcu to protect device->name	2012-06-14 21:29:16 -04:00
reada.c	Btrfs: add ref_count and free function for btrfs_bio	2015-01-21 18:06:48 -08:00
relocation.c	btrfs: sink blocksize parameter to tree_block_processed	2014-12-12 18:07:22 +01:00
root-tree.c	Btrfs: use bitfield instead of integer data type for the some variants in btrfs_root	2014-06-09 17:20:40 -07:00
scrub.c	Merge branch 'cleanups-post-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.1	2015-03-25 10:52:48 -07:00
send.c	Btrfs: incremental send, remove dead code	2015-03-26 17:55:52 -07:00
send.h	btrfs: make static code static & remove dead code	2013-05-06 15:55:23 -04:00
struct-funcs.c	Btrfs: rewrite BTRFS_SETGET_FUNCS	2012-07-23 16:28:06 -04:00
super.c	Merge branch 'cleanups-for-4.1-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.1	2015-03-25 10:43:16 -07:00
sysfs.c	btrfs: constify structs with op functions or static definitions	2015-02-16 18:48:44 +01:00
sysfs.h	btrfs: switch helper macros to static inlines in sysfs.h	2015-03-03 17:24:02 +01:00
transaction.c	Merge branch 'cleanups-post-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.1	2015-03-25 10:52:48 -07:00
transaction.h	Btrfs: fix metadata inconsistencies after directory fsync	2015-03-26 17:56:23 -07:00
tree-defrag.c	Btrfs: use bitfield instead of integer data type for the some variants in btrfs_root	2014-06-09 17:20:40 -07:00
tree-log.c	Btrfs: fix metadata inconsistencies after directory fsync	2015-03-26 17:56:23 -07:00
tree-log.h	Btrfs: fix metadata inconsistencies after directory fsync	2015-03-26 17:56:23 -07:00
ulist.c	Btrfs: do not export ulist functions	2014-01-29 07:06:27 -08:00
ulist.h	Btrfs: Fix memory corruption by ulist_add_merge() on 32bit arch	2014-08-15 07:43:19 -07:00
uuid-tree.c	Btrfs: make btrfs_search_forward return with nodes unlocked	2014-09-17 13:38:02 -07:00
volumes.c	Merge branch 'cleanups-post-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.1	2015-03-25 10:52:48 -07:00
volumes.h	btrfs: remove unused fs_info arg from btrfs_close_extra_devices()	2015-02-16 18:48:45 +01:00
xattr.c	Btrfs: do not ignore errors from btrfs_lookup_xattr in do_setxattr	2015-03-02 14:04:45 -08:00
xattr.h	btrfs: use generic posix ACL infrastructure	2014-01-25 23:58:18 -05:00
zlib.c	btrfs: constify structs with op functions or static definitions	2015-02-16 18:48:44 +01:00