Filipe Manana 53e489bc8c Btrfs: check pending chunks when shrinking fs to avoid corruption ... When we shrink the usable size of a device (its total_bytes), we go over all the device extent items in the device tree and attempt to relocate the chunk of any device extent that goes beyond the new usable size for the device. We do that after setting the new usable size (total_bytes) in the device object, so that all new allocations (and reallocations) don't use areas of the device that go beyond the new (shorter) size. However we were not considering that before setting the new size in the device, pending chunks might have been created that use device extents that go beyond the new size, and those device extents are not yet in the device tree after we search the device tree - they are still attached to the list of new block group for some ongoing transaction handle, and they are only added to the device tree when the transaction handle is ended (via btrfs_create_pending_block_groups()). So check for pending chunks with device extents that go beyond the new size and if any exists, commit the current transaction and repeat the search in the device tree. Not doing this it would mean we would return success to user space while still having extents that go beyond the new size, and later user space could override those locations on the device while the fs still references them, causing all sorts of corruption and unexpected events. Signed-off-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: Chris Mason <clm@fb.com>		2015-06-02 19:34:33 -07:00
..
tests	Btrfs: qgroup: cleanup, remove an unsued parameter in btrfs_create_qgroup().	2015-04-13 07:52:44 -07:00
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: clear 'ret' in btrfs_check_shared() loop	2015-05-19 18:04:17 -07:00
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	btrfs: Don't allow subvolid >= (1 << BTRFS_QGROUP_LEVEL_SHIFT) to be created	2015-04-13 07:52:54 -07:00
delayed-inode.c	Btrfs: fill ->last_trans for delayed inode in btrfs_fill_inode.	2015-04-26 06:27:03 -07:00
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: account for crcs in delayed ref processing	2015-04-10 14:04:47 -07:00
delayed-ref.h	Btrfs: account for crcs in delayed ref processing	2015-04-10 14:04:47 -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	btrfs: Fix NO_SPACE bug caused by delayed-iput	2015-04-13 07:27:41 -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	VFS: normal filesystems (and lustre): d_inode() annotations	2015-04-15 15:06:57 -04:00
export.h
extent_io.c	Btrfs: fix race when reusing stale extent buffers that leads to BUG_ON	2015-05-11 07:59:11 -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 regression in raid level conversion	2015-05-20 11:03:38 -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	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-04-26 17:22:07 -07:00
free-space-cache.c	Btrfs: fix crash after inode cache writeback failure	2015-05-11 07:59:10 -07:00
free-space-cache.h	Btrfs: allow block group cache writeout outside critical section in commit	2015-04-10 14:07:22 -07:00
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: allow block group cache writeout outside critical section in commit	2015-04-10 14:07:22 -07:00
inode-map.h
inode.c	Merge branch 'for-linus-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs	2015-05-01 07:46:21 -07:00
ioctl.c	Btrfs: don't invalidate root dentry when subvolume deletion fails	2015-06-02 19:34:33 -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 panic when starting bg cache writeout after IO error	2015-05-11 07:59:10 -07:00
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: quota: Automatically update related qgroups or mark INCONSISTENT flags when assigning/deleting a qgroup relations.	2015-04-13 07:52:59 -07:00
qgroup.h	btrfs: qgroup: do a reservation in a higher level.	2015-04-13 07:52:50 -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: qgroup: do a reservation in a higher level.	2015-04-13 07:52:50 -07:00
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 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-04-26 17:22:07 -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	Btrfs: allow block group cache writeout outside critical section in commit	2015-04-10 14:07:22 -07:00
transaction.h	Btrfs: allow block group cache writeout outside critical section in commit	2015-04-10 14:07:22 -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	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-04-26 17:22:07 -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	Btrfs: check pending chunks when shrinking fs to avoid corruption	2015-06-02 19:34:33 -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	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-04-26 17:22:07 -07:00
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