redonkable/alistair23-linux
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alistair23-linux/fs/btrfs
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Liu Bo e3d0396563 Btrfs: delayed-refs: use rb_first_cached for ref_tree 
rb_first_cached() trades an extra pointer "leftmost" for doing the same
job as rb_first() but in O(1).

Functions manipulating href->ref_tree need to get the first entry, this
converts href->ref_tree to use rb_first_cached().

For more details about the optimization see patch "Btrfs: delayed-refs:
use rb_first_cached for href_root".

Tested-by: Holger Hoffstätte <holger@applied-asynchrony.com>
Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2018-10-15 17:23:33 +02:00
..
tests btrfs: qgroup: Drop fs_info parameter from btrfs_qgroup_account_extent 2018-08-06 13:12:52 +02:00
acl.c btrfs: remove unnecessary curly braces in btrfs_get_acl 2018-08-06 13:12:41 +02:00
async-thread.c btrfs: replace GPL boilerplate by SPDX -- sources 2018-04-12 16:29:51 +02:00
async-thread.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
backref.c Btrfs: delayed-refs: use rb_first_cached for ref_tree 2018-10-15 17:23:33 +02:00
backref.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
btrfs_inode.h btrfs: Remove 'objectid' member from struct btrfs_root 2018-10-15 17:23:25 +02:00
check-integrity.c Btrfs: use args in the correct order for kcalloc in btrfsic_read_block 2018-10-15 17:23:30 +02:00
check-integrity.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
compression.c btrfs: remove unused pointer 'tree' in btrfs_submit_compressed_read 2018-10-15 17:23:28 +02:00
compression.h btrfs: compression: Add linux/sizes.h for compression.h 2018-05-29 18:13:00 +02:00
ctree.c btrfs: handle error of get_old_root 2018-10-15 17:23:31 +02:00
ctree.h Btrfs: fix alignment in declaration and prototype of btrfs_get_extent 2018-10-15 17:23:29 +02:00
dedupe.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
delayed-inode.c btrfs: Remove 'objectid' member from struct btrfs_root 2018-10-15 17:23:25 +02:00
delayed-inode.h btrfs: Remove fs_info from btrfs_delete_delayed_dir_index 2018-08-06 13:13:00 +02:00
delayed-ref.c Btrfs: delayed-refs: use rb_first_cached for ref_tree 2018-10-15 17:23:33 +02:00
delayed-ref.h Btrfs: delayed-refs: use rb_first_cached for ref_tree 2018-10-15 17:23:33 +02:00
dev-replace.c btrfs: fix error handling in btrfs_dev_replace_start 2018-10-15 17:23:31 +02:00
dev-replace.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
dir-item.c btrfs: Remove root parameter from btrfs_insert_dir_item 2018-10-15 17:23:25 +02:00
disk-io.c Btrfs: delayed-refs: use rb_first_cached for ref_tree 2018-10-15 17:23:33 +02:00
disk-io.h btrfs: unify end_io callbacks of async_submit_bio 2018-08-06 13:12:55 +02:00
export.c btrfs: Remove 'objectid' member from struct btrfs_root 2018-10-15 17:23:25 +02:00
export.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
extent-tree.c Btrfs: delayed-refs: use rb_first_cached for ref_tree 2018-10-15 17:23:33 +02:00
extent_io.c Btrfs: skip set_page_dirty if eb pages are already dirty 2018-10-15 17:23:31 +02:00
extent_io.h Btrfs: skip set_page_dirty if eb pages are already dirty 2018-10-15 17:23:31 +02:00
extent_map.c btrfs: change remove_extent_mapping to return void 2018-10-15 17:23:31 +02:00
extent_map.h btrfs: change remove_extent_mapping to return void 2018-10-15 17:23:31 +02:00
file-item.c btrfs: simplify pointer chasing of local fs_info variables 2018-08-06 13:12:43 +02:00
file.c btrfs: switch update_size to bool in btrfs_block_rsv_migrate and btrfs_rsv_add_bytes 2018-10-15 17:23:25 +02:00
free-space-cache.c btrfs: remove unneeded NULL checks before kfree 2018-10-15 17:23:26 +02:00
free-space-cache.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
free-space-tree.c btrfs: Remove fs_info from btrfs_del_root 2018-08-06 13:13:00 +02:00
free-space-tree.h btrfs: Remove fs_info argument from add_to_free_space_tree 2018-05-28 18:07:36 +02:00
inode-item.c btrfs: replace GPL boilerplate by SPDX -- sources 2018-04-12 16:29:51 +02:00
inode-map.c btrfs: prune unused includes 2018-08-06 13:12:43 +02:00
inode-map.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
inode.c btrfs: Remove logically dead code from btrfs_orphan_cleanup 2018-10-15 17:23:31 +02:00
ioctl.c btrfs: Ensure btrfs_trim_fs can trim the whole filesystem 2018-10-15 17:23:32 +02:00
Kconfig btrfs: add SPDX header to Kconfig 2018-04-12 16:29:55 +02:00
locking.c btrfs: replace waitqueue_actvie with cond_wake_up 2018-05-28 18:23:09 +02:00
locking.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
lzo.c btrfs: lzo: Harden inline lzo compressed extent decompression 2018-05-30 16:46:43 +02:00
Makefile btrfs: Remove custom crc32c init code 2018-03-26 15:09:39 +02:00
math.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
ordered-data.c btrfs: prune unused includes 2018-08-06 13:12:43 +02:00
ordered-data.h btrfs: remove remaing full_sync logic from btrfs_sync_file 2018-08-06 13:12:31 +02:00
orphan.c btrfs: replace GPL boilerplate by SPDX -- sources 2018-04-12 16:29:51 +02:00
print-tree.c btrfs: annotate unlikely branches after V0 extent type removal 2018-08-06 13:12:41 +02:00
print-tree.h btrfs: print-tree: debugging output enhancement 2018-04-20 19:18:16 +02:00
props.c btrfs: property: Set incompat flag if lzo/zstd compression is set 2018-05-17 14:18:25 +02:00
props.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
qgroup.c btrfs: qgroup: Dirty all qgroups before rescan 2018-10-15 17:23:26 +02:00
qgroup.h btrfs: qgroup: Drop fs_info parameter from btrfs_qgroup_inherit 2018-08-06 13:12:53 +02:00
raid56.c btrfs: raid56: catch errors from full_stripe_write 2018-08-06 13:12:45 +02:00
raid56.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
rcu-string.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
reada.c btrfs: prune unused includes 2018-08-06 13:12:43 +02:00
ref-verify.c btrfs: Remove 'objectid' member from struct btrfs_root 2018-10-15 17:23:25 +02:00
ref-verify.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
relocation.c btrfs: Handle owner mismatch gracefully when walking up tree 2018-10-15 17:23:27 +02:00
root-tree.c btrfs: Remove fs_info from btrfs_add_root_ref 2018-08-06 13:13:00 +02:00
scrub.c Btrfs: clean up scrub is_dev_replace parameter 2018-10-15 17:23:26 +02:00
send.c Btrfs: unify error handling of btrfs_lookup_dir_item 2018-10-15 17:23:30 +02:00
send.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
struct-funcs.c btrfs: prune unused includes 2018-08-06 13:12:43 +02:00
super.c btrfs: Remove 'objectid' member from struct btrfs_root 2018-10-15 17:23:25 +02:00
sysfs.c btrfs: prune unused includes 2018-08-06 13:12:43 +02:00
sysfs.h btrfs: sysfs: Use enum/define value for feature array definitions 2018-05-28 18:23:39 +02:00
transaction.c Btrfs: delayed-refs: use rb_first_cached for href_root 2018-10-15 17:23:33 +02:00
transaction.h btrfs: replace get_seconds with new 64bit time API 2018-08-06 13:12:29 +02:00
tree-checker.c btrfs: tree-checker: Detect invalid and empty essential trees 2018-08-06 13:12:42 +02:00
tree-checker.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
tree-defrag.c btrfs: replace GPL boilerplate by SPDX -- sources 2018-04-12 16:29:51 +02:00
tree-log.c btrfs: fix error handling in free_log_tree 2018-10-15 17:23:29 +02:00
tree-log.h btrfs: change btrfs_pin_log_trans to return void 2018-10-15 17:23:27 +02:00
ulist.c btrfs: replace GPL boilerplate by SPDX -- sources 2018-04-12 16:29:51 +02:00
ulist.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
uuid-tree.c btrfs: Remove fs_info argument from btrfs_uuid_tree_rem 2018-05-30 16:46:53 +02:00
volumes.c btrfs: Make btrfs_find_device_by_devspec return btrfs_device directly 2018-10-15 17:23:30 +02:00
volumes.h btrfs: Make btrfs_find_device_by_devspec return btrfs_device directly 2018-10-15 17:23:30 +02:00
xattr.c btrfs: replace GPL boilerplate by SPDX -- sources 2018-04-12 16:29:51 +02:00
xattr.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
zlib.c btrfs: replace GPL boilerplate by SPDX -- sources 2018-04-12 16:29:51 +02:00
zstd.c btrfs: replace GPL boilerplate by SPDX -- sources 2018-04-12 16:29:51 +02:00