Nikolay Borisov beed9263f4 btrfs: Fix flush bio leak ... Commit e0ae999414 ("btrfs: preallocate device flush bio") reworked the way the flush bio is allocated and used. Concretely it allocates the bio in __alloc_device and then re-uses it multiple times with a very simple endio routine that just calls complete() without consuming a reference. Allocated bios by default come with a ref count of 1, which is then consumed by the endio routine (or not, in which case they should be bio_put by the caller). The way the impleementation works now is that the flush bio has a refcount of 2 and we only ever bio_put it once, leaving it to hang indefinitely. Fix this by removing the extra bio_get in __alloc_device. Fixes: e0ae999414 ("btrfs: preallocate device flush bio") Signed-off-by: Nikolay Borisov <nborisov@suse.com> Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>		2018-01-02 18:00:13 +01:00
..
tests	Btrfs: fix reported number of inode blocks after buffered append writes	2017-11-15 17:27:46 +01:00
acl.c	btrfs: preserve i_mode if __btrfs_set_acl() fails	2017-08-21 17:47:42 +02:00
async-thread.c	Btrfs: fix confusing worker helper info in stacktrace	2017-10-30 12:27:57 +01:00
async-thread.h	btrfs: constify tracepoint arguments	2017-08-16 14:19:53 +02:00
backref.c	btrfs: track refs in a rb_tree instead of a list	2017-11-01 20:45:35 +01:00
backref.h	btrfs: add a flag to iterate_inodes_from_logical to find all extent refs for uncompressed extents	2017-11-01 20:45:34 +01:00
btrfs_inode.h	btrfs: make the delalloc block rsv per inode	2017-11-01 20:45:35 +01:00
check-integrity.c	btrfs: Fix bug for misused dev_t when lookup in dev state hash table.	2017-11-01 20:45:36 +01:00
check-integrity.h	btrfs: take an fs_info directly when the root is not used otherwise	2016-12-06 16:06:59 +01:00
compression.c	btrfs: Fix wild memory access in compression level parser	2017-11-27 17:01:11 +01:00
compression.h	btrfs: Fix wild memory access in compression level parser	2017-11-27 17:01:11 +01:00
ctree.c	btrfs: handle errors while updating refcounts in update_ref_for_cow	2017-12-07 00:30:03 +01:00
ctree.h	Btrfs: fix reported number of inode blocks after buffered append writes	2017-11-15 17:27:46 +01:00
dedupe.h	btrfs: expand cow_file_range() to support in-band dedup and subpage-blocksize	2016-07-26 13:52:25 +02:00
delayed-inode.c	btrfs: make the delalloc block rsv per inode	2017-11-01 20:45:35 +01:00
delayed-inode.h	btrfs: convert btrfs_delayed_item.refs from atomic_t to refcount_t	2017-04-18 14:07:23 +02:00
delayed-ref.c	btrfs: track refs in a rb_tree instead of a list	2017-11-01 20:45:35 +01:00
delayed-ref.h	btrfs: track refs in a rb_tree instead of a list	2017-11-01 20:45:35 +01:00
dev-replace.c	Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2017-09-14 18:54:01 -07:00
dev-replace.h	btrfs: constify device path passed to relevant helpers	2017-02-28 14:26:07 +01:00
dir-item.c	btrfs: fix validation of XATTR_ITEM dir items	2017-06-29 20:06:11 +02:00
disk-io.c	Btrfs: disable FUA if mounted with nobarrier	2017-12-07 00:34:45 +01:00
disk-io.h	btrfs: use named constant for bdev blocksize	2017-08-16 16:12:04 +02:00
export.c	btrfs: Check name_len before reading btrfs_get_name	2017-06-21 19:16:04 +02:00
export.h
extent-tree.c	btrfs: fix missing error return in btrfs_drop_snapshot	2017-12-07 00:30:29 +01:00
extent_io.c	Btrfs: add write_flags for compression bio	2017-11-15 14:44:31 +01:00
extent_io.h	Btrfs: fix reported number of inode blocks after buffered append writes	2017-11-15 17:27:46 +01:00
extent_map.c	btrfs: convert extent_map.refs from atomic_t to refcount_t	2017-04-18 14:07:23 +02:00
extent_map.h	btrfs: convert extent_map.refs from atomic_t to refcount_t	2017-04-18 14:07:23 +02:00
file-item.c	Merge branch 'for-4.13-part1' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux	2017-07-05 16:41:23 -07:00
file.c	Btrfs: fix list_add corruption and soft lockups in fsync	2017-11-27 17:41:19 +01:00
free-space-cache.c	btrfs: fix deadlock when writing out space cache	2017-11-27 15:50:07 +01:00
free-space-cache.h	btrfs: free-space-cache, clean up unnecessary root arguments	2017-02-17 12:03:56 +01:00
free-space-tree.c	btrfs: Clean up unused variables in free-space-tree.c	2017-10-30 12:27:59 +01:00
free-space-tree.h	btrfs: expose internal free space tree routine only if sanity tests are enabled	2017-08-18 16:36:29 +02:00
hash.c	crypto: Work around deallocated stack frame reference gcc bug on sparc.	2017-06-08 17:36:03 +08:00
hash.h	btrfs: advertise which crc32c implementation is being used at module load	2016-06-06 14:08:28 +02:00
inode-item.c	btrfs: take an fs_info directly when the root is not used otherwise	2016-12-06 16:06:59 +01:00
inode-map.c	Btrfs: rework outstanding_extents	2017-11-01 20:45:35 +01:00
inode-map.h	Btrfs: Initialize btrfs_root->highest_objectid when loading tree root and subvolume roots	2016-01-15 19:25:02 +01:00
inode.c	btrfs: Fix quota reservation leak on preallocated files	2017-12-07 00:28:12 +01:00
ioctl.c	btrfs: Fix possible off-by-one in btrfs_search_path_in_tree	2017-12-07 00:35:15 +01:00
Kconfig	Btrfs: add a extent ref verify tool	2017-10-30 12:28:00 +01:00
locking.c	btrfs: cleanup, remove stray return statements	2016-01-07 14:30:52 +01:00
locking.h	btrfs: fix lockups from btrfs_clear_path_blocking	2014-11-19 10:34:35 -08:00
lzo.c	btrfs: allow to set compression level for zlib	2017-11-01 20:45:29 +01:00
Makefile	Btrfs: add a extent ref verify tool	2017-10-30 12:28:00 +01:00
math.h	btrfs: cleanup 64bit/32bit divs, compile time constants	2015-03-03 17:23:57 +01:00
ordered-data.c	Btrfs: rework outstanding_extents	2017-11-01 20:45:35 +01:00
ordered-data.h	btrfs: fix integer overflow in calc_reclaim_items_nr	2017-06-29 20:17:02 +02:00
orphan.c	btrfs: kill the key type accessor helpers	2014-09-17 13:37:12 -07:00
print-tree.c	Btrfs: add one more sanity check for shared ref type	2017-08-21 17:47:43 +02:00
print-tree.h	btrfs: get fs_info from eb in btrfs_print_tree, remove argument	2017-08-16 16:12:03 +02:00
props.c	Merge branch 'zstd-minimal' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs	2017-09-14 17:30:49 -07:00
props.h
qgroup.c	btrfs: add a flag to iterate_inodes_from_logical to find all extent refs for uncompressed extents	2017-11-01 20:45:34 +01:00
qgroup.h	btrfs: qgroup: Fix qgroup reserved space underflow by only freeing reserved ranges	2017-06-29 20:17:02 +02:00
raid56.c	Btrfs: fix memory leak in raid56	2017-10-30 12:27:57 +01:00
raid56.h	btrfs: take an fs_info directly when the root is not used otherwise	2016-12-06 16:06:59 +01:00
rcu-string.h
reada.c	btrfs: remove unused member err from reada_extent	2017-06-19 18:25:59 +02:00
ref-verify.c	Btrfs: add a extent ref verify tool	2017-10-30 12:28:00 +01:00
ref-verify.h	Btrfs: add a extent ref verify tool	2017-10-30 12:28:00 +01:00
relocation.c	Btrfs: fix reported number of inode blocks after buffered append writes	2017-11-15 17:27:46 +01:00
root-tree.c	btrfs: Clean up dead code in root-tree	2017-10-30 12:27:56 +01:00
scrub.c	btrfs: add a flag to iterate_inodes_from_logical to find all extent refs for uncompressed extents	2017-11-01 20:45:34 +01:00
send.c	Btrfs: incremental send, fix wrong unlink path after renaming file	2017-11-28 17:15:30 +01:00
send.h	btrfs: fix send ioctl on 32bit with 64bit kernel	2017-10-30 12:27:59 +01:00
struct-funcs.c	btrfs: struct-funcs, constify readers	2017-08-16 14:19:53 +02:00
super.c	btrfs: Fix wild memory access in compression level parser	2017-11-27 17:01:11 +01:00
sysfs.c	btrfs: prefix sysfs attribute struct names	2017-10-30 12:27:58 +01:00
sysfs.h	btrfs: prefix sysfs attribute struct names	2017-10-30 12:27:58 +01:00
transaction.c	btrfs: don't call btrfs_start_delalloc_roots in flushoncommit	2017-11-01 20:45:35 +01:00
transaction.h	btrfs: remove unused qgroup members from btrfs_trans_handle	2017-04-18 14:07:25 +02:00
tree-checker.c	btrfs: tree-checker: Fix false panic for sanity test	2017-11-28 14:59:09 +01:00
tree-checker.h	btrfs: tree-checker: Fix false panic for sanity test	2017-11-28 14:59:09 +01:00
tree-defrag.c	Btrfs: fix locking bugs when defragging leaves	2015-12-18 02:51:32 +00:00
tree-log.c	Btrfs: fix list_add corruption and soft lockups in fsync	2017-11-27 17:41:19 +01:00
tree-log.h	btrfs: Make btrfs_del_inode_ref take btrfs_inode	2017-02-14 15:50:54 +01:00
ulist.c	btrfs: ulist: rename ulist_fini to ulist_release	2017-02-17 12:03:50 +01:00
ulist.h	btrfs: ulist: rename ulist_fini to ulist_release	2017-02-17 12:03:50 +01:00
uuid-tree.c	btrfs: return the actual error value from from btrfs_uuid_tree_iterate	2016-12-19 18:08:15 +01:00
volumes.c	btrfs: Fix flush bio leak	2018-01-02 18:00:13 +01:00
volumes.h	btrfs: declare btrfs_report_missing_device() static	2017-10-30 12:27:59 +01:00
xattr.c	btrfs: Check name_len with boundary in verify dir_item	2017-06-21 19:16:04 +02:00
xattr.h	btrfs: Switch to generic xattr handlers	2016-05-17 19:17:09 -04:00
zlib.c	btrfs: allow to set compression level for zlib	2017-11-01 20:45:29 +01:00
zstd.c	btrfs: allow to set compression level for zlib	2017-11-01 20:45:29 +01:00