Filipe Manana e3b8a48585 Btrfs: fix reported number of inode blocks after buffered append writes ... The patch from commit a7e3b975a0 ("Btrfs: fix reported number of inode blocks") introduced a regression where if we do a buffered write starting at position equal to or greater than the file's size and then stat(2) the file before writeback is triggered, the number of used blocks does not change (unless there's a prealloc/unwritten extent). Example: $ xfs_io -f -c "pwrite -S 0xab 0 64K" foobar $ du -h foobar 0 foobar $ sync $ du -h foobar 64K foobar The first version of that patch didn't had this regression and the second version, which was the one committed, was made only to address some performance regression detected by the intel test robots using fs_mark. This fixes the regression by setting the new delaloc bit in the range, and doing it at btrfs_dirty_pages() while setting the regular dealloc bit as well, so that this way we set both bits at once avoiding navigation of the inode's io tree twice. Doing it at btrfs_dirty_pages() is also the most meaninful place, as we should set the new dellaloc bit when if we set the delalloc bit, which happens only if we copied bytes into the pages at __btrfs_buffered_write(). This was making some of LTP's du tests fail, which can be quickly run using a command line like the following: $ ./runltp -q -p -l /ltp.log -f commands -s du -d /mnt Fixes: a7e3b975a0 ("Btrfs: fix reported number of inode blocks") Signed-off-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>		2017-11-15 17:27:46 +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: add write_flags for compression bio	2017-11-15 14:44:31 +01:00
compression.h	Btrfs: add write_flags for compression bio	2017-11-15 14:44:31 +01:00
ctree.c	btrfs: pass root to various extent ref mod functions	2017-10-30 12:28:00 +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: track refs in a rb_tree instead of a list	2017-11-01 20:45:35 +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_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
extent-tree.c	btrfs: track refs in a rb_tree instead of a list	2017-11-01 20:45:35 +01:00
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 reported number of inode blocks after buffered append writes	2017-11-15 17:27:46 +01:00
free-space-cache.c	btrfs: drop newlines from strings when using btrfs_* helpers	2017-08-16 16:12:02 +02:00
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
inode.c	Btrfs: fix reported number of inode blocks after buffered append writes	2017-11-15 17:27:46 +01:00
ioctl.c	Btrfs: rework outstanding_extents	2017-11-01 20:45:35 +01:00
Kconfig	Btrfs: add a extent ref verify tool	2017-10-30 12:28:00 +01:00
locking.c
locking.h
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
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
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: 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.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: allow setting zlib compression level via :9	2017-11-01 20:45:34 +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: use %zu format string for size_t	2017-10-30 12:27:59 +01:00
tree-checker.h	btrfs: Move leaf and node validation checker to tree-checker.c	2017-10-30 12:27:58 +01:00
tree-defrag.c
tree-log.c	btrfs: pass root to various extent ref mod functions	2017-10-30 12:28:00 +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: dev_alloc_list is not protected by RCU, use normal list_del	2017-11-15 14:46:12 +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