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remarkable-linux/fs/btrfs
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Yan Zheng f82d02d9d8 Btrfs: Improve space balancing code 
This patch improves the space balancing code to keep more sharing
of tree blocks. The only case that breaks sharing of tree blocks is
data extents get fragmented during balancing. The main changes in
this patch are:

Add a 'drop sub-tree' function. This solves the problem in old code
that BTRFS_HEADER_FLAG_WRITTEN check breaks sharing of tree block.

Remove relocation mapping tree. Relocation mappings are stored in
struct btrfs_ref_path and updated dynamically during walking up/down
the reference path. This reduces CPU usage and simplifies code.

This patch also fixes a bug. Root items for reloc trees should be
updated in btrfs_free_reloc_root.

Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
2008-10-29 14:49:05 -04:00
..
acl.c Btrfs: optimize btrget/set/removexattr 2008-09-25 11:04:07 -04:00
async-thread.c Btrfs: fix multi-device code to use raid policies set by mkfs 2008-09-30 19:36:34 -04:00
async-thread.h Btrfs: add and improve comments 2008-09-29 15:18:18 -04:00
btrfs_inode.h Btrfs: add and improve comments 2008-09-29 15:18:18 -04:00
compat.h Remove Btrfs compat code for older kernels 2008-09-25 15:41:59 -04:00
compression.c Btrfs: Add zlib compression support 2008-10-29 14:49:59 -04:00
compression.h Btrfs: Add zlib compression support 2008-10-29 14:49:59 -04:00
COPYING Btrfs: add GPLv2 2007-06-12 09:07:21 -04:00
crc32c.h Btrfs: add and improve comments 2008-09-29 15:18:18 -04:00
ctree.c Btrfs: Improve space balancing code 2008-10-29 14:49:05 -04:00
ctree.h Btrfs: Improve space balancing code 2008-10-29 14:49:05 -04:00
dir-item.c Btrfs: add and improve comments 2008-09-29 15:18:18 -04:00
disk-io.c Btrfs: Improve space balancing code 2008-10-29 14:49:05 -04:00
disk-io.h Btrfs: Add zlib compression support 2008-10-29 14:49:59 -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: Improve space balancing code 2008-10-29 14:49:05 -04:00
extent_io.c Btrfs: Add zlib compression support 2008-10-29 14:49:59 -04:00
extent_io.h Btrfs: Add zlib compression support 2008-10-29 14:49:59 -04:00
extent_map.c Btrfs: Add zlib compression support 2008-10-29 14:49:59 -04:00
extent_map.h Btrfs: Add zlib compression support 2008-10-29 14:49:59 -04:00
file-item.c Btrfs: Add zlib compression support 2008-10-29 14:49:59 -04:00
file.c Btrfs: Add zlib compression support 2008-10-29 14:49:59 -04:00
free-space-cache.c Btrfs: make tree_search_offset more flexible in its searching 2008-10-10 10:24:32 -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: extent_map and data=ordered fixes for space balancing 2008-09-26 10:05:38 -04:00
inode.c Btrfs: Add zlib compression support 2008-10-29 14:49:59 -04:00
INSTALL Btrfs: Documentation update 2007-06-22 14:49:31 -04:00
ioctl.c Btrfs: Don't call security_inode_mkdir during subvol creation 2008-10-10 10:23:22 -04:00
ioctl.h Btrfs: transaction ioctls 2008-09-25 11:04:03 -04:00
locking.c Btrfs: add and improve comments 2008-09-29 15:18:18 -04:00
locking.h btrfs_search_slot: reduce lock contention by cowing in two stages 2008-09-25 11:04:06 -04:00
Makefile Btrfs: Add zlib compression support 2008-10-29 14:49:59 -04:00
ordered-data.c Btrfs: Add zlib compression support 2008-10-29 14:49:59 -04:00
ordered-data.h Btrfs: Add zlib compression support 2008-10-29 14:49:59 -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: Add zlib compression support 2008-10-29 14:49:59 -04:00
print-tree.h Btrfs: Create extent_buffer interface for large blocksizes 2008-09-25 11:03:56 -04:00
ref-cache.c Btrfs: add and improve comments 2008-09-29 15:18:18 -04:00
ref-cache.h Btrfs: add and improve comments 2008-09-29 15:18:18 -04:00
root-tree.c Btrfs: add and improve comments 2008-09-29 15:18:18 -04:00
struct-funcs.c Btrfs: add and improve comments 2008-09-29 15:18:18 -04:00
super.c Btrfs: Add zlib compression support 2008-10-29 14:49:59 -04:00
sysfs.c Remove Btrfs compat code for older kernels 2008-09-25 15:41:59 -04:00
transaction.c Btrfs: Improve space balancing code 2008-10-29 14:49:05 -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 and improve comments 2008-09-29 15:18:18 -04:00
tree-log.c Btrfs: Add zlib compression support 2008-10-29 14:49:59 -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 Btrfs: Add zlib compression support 2008-10-29 14:49:59 -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
zlib.c Btrfs: Add zlib compression support 2008-10-29 14:49:59 -04:00