Chris Mason 242e18c7c1 Btrfs: reduce lock contention on extent buffer locks ... The extent buffers have a refs_lock which we use to make coordinate freeing the extent buffer with operations on the radix tree. On tree roots and other extent buffers that very cache hot, this can be highly contended. These are also the extent buffers that are basically pinned in memory. This commit adds code to cmpxchg our way through the ref modifications, and as long as the result of the reference change is still pinned in ram, we skip the expensive spinlock. Signed-off-by: Chris Mason <chris.mason@fusionio.com>		2013-02-01 14:24:25 -05:00
..
acl.c	Btrfs: skip adding an acl attribute if we don't have to	2012-12-16 20:46:15 -05:00
async-thread.c
async-thread.h
backref.c	Btrfs: merge inode_list in __merge_refs	2012-12-12 17:15:27 -05:00
backref.h	Btrfs: extended inode refs support for send mechanism	2012-10-25 15:45:16 -04:00
btrfs_inode.h	Btrfs: inline csums if we're fsyncing	2012-12-16 20:46:22 -05:00
check-integrity.c	Btrfs: fix race in check-integrity caused by usage of bitfield	2012-12-16 20:46:13 -05:00
check-integrity.h
compat.h
compression.c	Btrfs: add rw argument to merge_bio_hook()	2013-02-01 11:49:47 -05:00
compression.h
ctree.c	Revert "Btrfs: reorder tree mod log operations in deleting a pointer"	2012-12-18 19:35:32 -05:00
ctree.h	Btrfs: Add a stripe cache to raid56	2013-02-01 14:24:23 -05:00
delayed-inode.c	Btrfs: cleanup for btrfs_btree_balance_dirty	2012-12-12 17:15:28 -05:00
delayed-inode.h
delayed-ref.c
delayed-ref.h
dev-replace.c	Btrfs: add new sources for device replace code	2012-12-12 17:15:41 -05:00
dev-replace.h	Btrfs: add new sources for device replace code	2012-12-12 17:15:41 -05:00
dir-item.c	Btrfs: fix hash overflow handling	2012-12-17 14:48:21 -05:00
disk-io.c	Btrfs: RAID5 and RAID6	2013-02-01 14:24:23 -05:00
disk-io.h	Btrfs: RAID5 and RAID6	2013-02-01 14:24:23 -05:00
export.c
export.h
extent-tree.c	Btrfs: fix cluster alignment for mount -o ssd	2013-02-01 14:24:24 -05:00
extent_io.c	Btrfs: reduce lock contention on extent buffer locks	2013-02-01 14:24:25 -05:00
extent_io.h	Btrfs: add rw argument to merge_bio_hook()	2013-02-01 11:49:47 -05:00
extent_map.c	Btrfs: log changed inodes based on the extent map tree	2012-12-16 20:46:24 -05:00
extent_map.h	Btrfs: do not mark ems as prealloc if we are writing to them	2012-12-16 20:46:23 -05:00
file-item.c	Btrfs: fix wrong file extent length	2012-12-12 17:15:21 -05:00
file.c	Btrfs: do not call file_update_time in aio_write	2012-12-16 20:46:27 -05:00
free-space-cache.c	Btrfs: RAID5 and RAID6	2013-02-01 14:24:23 -05:00
free-space-cache.h
hash.h
inode-item.c
inode-map.c	Btrfs: improve the noflush reservation	2012-12-11 13:31:31 -05:00
inode-map.h
inode.c	Btrfs: RAID5 and RAID6	2013-02-01 14:24:23 -05:00
ioctl.c	Btrfs: fix a bug of per-file nocow	2012-12-17 14:48:21 -05:00
ioctl.h	Btrfs: add support for device replace ioctls	2012-12-16 20:46:06 -05:00
Kconfig	Btrfs: RAID5 and RAID6	2013-02-01 14:24:23 -05:00
locking.c
locking.h
lzo.c
Makefile	Btrfs: RAID5 and RAID6	2013-02-01 14:24:23 -05:00
math.h	Btrfs: cleanup duplicated division functions	2012-12-11 13:31:30 -05:00
ordered-data.c	Btrfs: cleanup for btrfs_wait_order_range	2012-12-12 17:15:19 -05:00
ordered-data.h	Btrfs: make ordered extent be flushed by multi-task	2012-12-11 13:31:38 -05:00
orphan.c
print-tree.c	Btrfs: introduce a btrfs_dev_replace_item type	2012-12-12 17:15:38 -05:00
print-tree.h
qgroup.c	Btrfs: fix memory leak in btrfs_quota_enable()	2012-10-25 15:45:43 -04:00
raid56.c	Btrfs: add a plugging callback to raid56 writes	2013-02-01 14:24:24 -05:00
raid56.h	Btrfs: RAID5 and RAID6	2013-02-01 14:24:23 -05:00
rcu-string.h
reada.c	Btrfs: introduce GET_READ_MIRRORS functionality for btrfs_map_block()	2012-12-12 17:15:43 -05:00
relocation.c	Btrfs: cleanup for btrfs_btree_balance_dirty	2012-12-12 17:15:28 -05:00
root-tree.c	Btrfs: rename root_times_lock to root_item_lock	2012-12-16 20:46:21 -05:00
scrub.c	Btrfs: RAID5 and RAID6	2013-02-01 14:24:23 -05:00
send.c	Btrfs: rename root_times_lock to root_item_lock	2012-12-16 20:46:21 -05:00
send.h
struct-funcs.c
super.c	Btrfs: use slabs for auto defrag allocation	2012-12-16 20:46:11 -05:00
sysfs.c
transaction.c	Btrfs: RAID5 and RAID6	2013-02-01 14:24:23 -05:00
transaction.h	Btrfs: improve the noflush reservation	2012-12-11 13:31:31 -05:00
tree-defrag.c
tree-log.c	Btrfs: use tokens where we can in the tree log	2012-12-16 20:46:26 -05:00
tree-log.h
ulist.c
ulist.h
version.h
volumes.c	Btrfs: RAID5 and RAID6	2013-02-01 14:24:23 -05:00
volumes.h	Btrfs: RAID5 and RAID6	2013-02-01 14:24:23 -05:00
xattr.c	Btrfs: only log the inode item if we can get away with it	2012-12-16 20:46:21 -05:00
xattr.h
zlib.c	btrfs: fix message printing	2012-10-09 09:19:57 -04:00