Josef Bacik 0e0adbcfdc btrfs: track refs in a rb_tree instead of a list ... If we get a significant amount of delayed refs for a single block (think modifying multiple snapshots) we can end up spending an ungodly amount of time looping through all of the entries trying to see if they can be merged. This is because we only add them to a list, so we have O(2n) for every ref head. This doesn't make any sense as we likely have refs for different roots, and so they cannot be merged. Tracking in a tree will allow us to break as soon as we hit an entry that doesn't match, making our worst case O(n). With this we can also merge entries more easily. Before we had to hope that matching refs were on the ends of our list, but with the tree we can search down to exact matches and merge them at insert time. Signed-off-by: Josef Bacik <jbacik@fb.com> Signed-off-by: David Sterba <dsterba@suse.com>		2017-11-01 20:45:35 +01:00
..
tests	Btrfs: rework outstanding_extents	2017-11-01 20:45:35 +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: Use bd_dev to generate index when dev_state_hashtable add items.	2017-10-30 12:28:01 +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: allow setting zlib compression level via :9	2017-11-01 20:45:34 +01:00
compression.h	btrfs: allow to set compression level for zlib	2017-11-01 20:45:29 +01:00
ctree.c	btrfs: pass root to various extent ref mod functions	2017-10-30 12:28:00 +01:00
ctree.h	btrfs: make the delalloc block rsv per inode	2017-11-01 20:45:35 +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: get rid of sector_t and use u64 offset in submit_extent_page	2017-10-30 12:28:00 +01:00
extent_io.h	Btrfs: remove bio_flags which indicates a meta block of log-tree	2017-10-30 12:27:56 +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: rework outstanding_extents	2017-11-01 20:45:35 +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	Btrfs: Initialize btrfs_root->highest_objectid when loading tree root and subvolume roots	2016-01-15 19:25:02 +01:00
inode.c	btrfs: make the delalloc block rsv per inode	2017-11-01 20:45:35 +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	btrfs: cleanup, remove stray return statements	2016-01-07 14:30:52 +01:00
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: rework outstanding_extents	2017-11-01 20:45:35 +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: only check delayed ref usage in should_end_transaction	2017-10-30 12:28:00 +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	Btrfs: fix locking bugs when defragging leaves	2015-12-18 02:51:32 +00:00
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: remove BUG_ON in btrfs_rm_dev_replace_free_srcdev()	2017-11-01 20:45:34 +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