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Zheng Yan e465768938 Btrfs: Add shared reference cache 
Btrfs has a cache of reference counts in leaves, allowing it to
avoid reading tree leaves while deleting snapshots.  To reduce
contention with multiple subvolumes, this cache is private to each
subvolume.

This patch adds shared reference cache support. The new space
balancing code plays with multiple subvols at the same time, So
the old per-subvol reference cache is not well suited.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-26 10:04:53 -04:00
..
acl.c Btrfs: optimize btrget/set/removexattr 2008-09-25 11:04:07 -04:00
async-thread.c Remove Btrfs compat code for older kernels 2008-09-25 15:41:59 -04:00
async-thread.h Btrfs: Give all the worker threads descriptive names 2008-09-25 11:04:06 -04:00
bit-radix.c
bit-radix.h
btrfs_inode.h Btrfs: Dir fsync optimizations 2008-09-25 11:04:07 -04:00
compat.h Remove Btrfs compat code for older kernels 2008-09-25 15:41:59 -04:00
COPYING
crc32c.h Remove Btrfs compat code for older kernels 2008-09-25 15:41:59 -04:00
ctree.c Btrfs: Full back reference support 2008-09-25 11:04:07 -04:00
ctree.h Btrfs: Add shared reference cache 2008-09-26 10:04:53 -04:00
dir-item.c Btrfs: Add a write ahead tree log to optimize synchronous operations 2008-09-25 11:04:07 -04:00
disk-io.c Btrfs: Add shared reference cache 2008-09-26 10:04:53 -04:00
disk-io.h Btrfs: Tree logging fixes 2008-09-25 11:04:07 -04:00
export.c Remove Btrfs compat code for older kernels 2008-09-25 15:41:59 -04:00
export.h NFS support for btrfs - v3 2008-09-25 11:04:06 -04:00
extent-tree.c Btrfs: Add shared reference cache 2008-09-26 10:04:53 -04:00
extent_io.c Remove Btrfs compat code for older kernels 2008-09-25 15:41:59 -04:00
extent_io.h Btrfs: Tree logging fixes 2008-09-25 11:04:07 -04:00
extent_map.c Btrfs: Fix add_extent_mapping to check for duplicates across the whole range 2008-09-25 11:04:06 -04:00
extent_map.h Btrfs: Fix some data=ordered related data corruptions 2008-09-25 11:04:05 -04:00
file-item.c Btrfs: Fix variable init during csum creation 2008-09-25 11:04:07 -04:00
file.c Remove Btrfs compat code for older kernels 2008-09-25 15:41:59 -04:00
free-space-cache.c Btrfs: Fix allocation completions in tree log replay 2008-09-25 15:41:59 -04:00
hash.h Switch btrfs_name_hash() to crc32c 2008-09-25 11:04:06 -04:00
inode-item.c Btrfs: Implement new dir index format 2008-09-25 11:04:05 -04:00
inode-map.c Btrfs: Update find free objectid function for orphan cleanup code 2008-09-25 11:04:07 -04:00
inode.c Remove Btrfs compat code for older kernels 2008-09-25 15:41:59 -04:00
INSTALL
ioctl.c Btrfs: Full back reference support 2008-09-25 11:04:07 -04:00
ioctl.h
locking.c btrfs_search_slot: reduce lock contention by cowing in two stages 2008-09-25 11:04:06 -04:00
locking.h btrfs_search_slot: reduce lock contention by cowing in two stages 2008-09-25 11:04:06 -04:00
Makefile Update Btrfs files for in-kernel usage 2008-09-25 15:41:59 -04:00
ordered-data.c Btrfs: Fix nodatacow for the new data=ordered mode 2008-09-25 11:04:06 -04:00
ordered-data.h Btrfs: Fix nodatacow for the new data=ordered mode 2008-09-25 11:04:06 -04:00
orphan.c Btrfs: Create orphan inode records to prevent lost files after a crash 2008-09-25 11:04:05 -04:00
print-tree.c Btrfs: Full back reference support 2008-09-25 11:04:07 -04:00
print-tree.h
ref-cache.c Btrfs: Add shared reference cache 2008-09-26 10:04:53 -04:00
ref-cache.h Btrfs: Add shared reference cache 2008-09-26 10:04:53 -04:00
root-tree.c Btrfs: Add a write ahead tree log to optimize synchronous operations 2008-09-25 11:04:07 -04:00
struct-funcs.c
super.c Remove Btrfs compat code for older kernels 2008-09-25 15:41:59 -04:00
sysfs.c Remove Btrfs compat code for older kernels 2008-09-25 15:41:59 -04:00
TODO
transaction.c Btrfs: Add shared reference cache 2008-09-26 10:04:53 -04:00
transaction.h Btrfs: Record dirty pages tree-log pages in an extent_io tree 2008-09-25 11:04:07 -04:00
tree-defrag.c Btrfs: Add a write ahead tree log to optimize synchronous operations 2008-09-25 11:04:07 -04:00
tree-log.c Btrfs: Full back reference support 2008-09-25 11:04:07 -04:00
tree-log.h Btrfs: Add a write ahead tree log to optimize synchronous operations 2008-09-25 11:04:07 -04:00
version.h Update Btrfs files for in-kernel usage 2008-09-25 15:41:59 -04:00
version.sh Btrfs: Update version.sh to v0.16 2008-09-25 11:04:06 -04:00
volumes.c Remove Btrfs compat code for older kernels 2008-09-25 15:41:59 -04:00
volumes.h Btrfs: Fix the multi-bio code to save the original bio for completion 2008-09-25 11:04:06 -04:00
xattr.c Btrfs: optimize btrget/set/removexattr 2008-09-25 11:04:07 -04:00
xattr.h Btrfs: optimize btrget/set/removexattr 2008-09-25 11:04:07 -04:00