Chris Mason 771ed689d2 Btrfs: Optimize compressed writeback and reads ... When reading compressed extents, try to put pages into the page cache for any pages covered by the compressed extent that readpages didn't already preload. Add an async work queue to handle transformations at delayed allocation processing time. Right now this is just compression. The workflow is: 1) Find offsets in the file marked for delayed allocation 2) Lock the pages 3) Lock the state bits 4) Call the async delalloc code The async delalloc code clears the state lock bits and delalloc bits. It is important this happens before the range goes into the work queue because otherwise it might deadlock with other work queue items that try to lock those extent bits. The file pages are compressed, and if the compression doesn't work the pages are written back directly. An ordered work queue is used to make sure the inodes are written in the same order that pdflush or writepages sent them down. This changes extent_write_cache_pages to let the writepage function update the wbc nr_written count. Signed-off-by: Chris Mason <chris.mason@oracle.com>		2008-11-06 22:02:51 -05:00
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acl.c	Btrfs: optimize btrget/set/removexattr	2008-09-25 11:04:07 -04:00
async-thread.c	Btrfs: Add ordered async work queues	2008-11-06 22:03:00 -05:00
async-thread.h	Btrfs: Add ordered async work queues	2008-11-06 22:03:00 -05:00
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: Optimize compressed writeback and reads	2008-11-06 22:02:51 -05:00
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: nuke fs wide allocation mutex V2	2008-10-29 14:49:05 -04:00
ctree.h	Btrfs: Optimize compressed writeback and reads	2008-11-06 22:02:51 -05:00
dir-item.c	Btrfs: add and improve comments	2008-09-29 15:18:18 -04:00
disk-io.c	Btrfs: Optimize compressed writeback and reads	2008-11-06 22:02:51 -05:00
disk-io.h	Btrfs: Add ordered async work queues	2008-11-06 22:03:00 -05:00
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: Optimize compressed writeback and reads	2008-11-06 22:02:51 -05:00
extent_io.c	Btrfs: Optimize compressed writeback and reads	2008-11-06 22:02:51 -05:00
extent_io.h	Btrfs: Optimize compressed writeback and reads	2008-11-06 22:02:51 -05:00
extent_map.c	Btrfs: Add zlib compression support	2008-10-29 14:49:59 -04:00
extent_map.h	Btrfs: Add fallocate support v2	2008-10-30 14:25:28 -04:00
file-item.c	Btrfs: Add zlib compression support	2008-10-29 14:49:59 -04:00
file.c	Btrfs: Optimize compressed writeback and reads	2008-11-06 22:02:51 -05:00
free-space-cache.c	Btrfs: nuke fs wide allocation mutex V2	2008-10-29 14:49:05 -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: Optimize compressed writeback and reads	2008-11-06 22:02:51 -05:00
INSTALL	Btrfs: Documentation update	2007-06-22 14:49:31 -04:00
ioctl.c	Btrfs: Add fallocate support v2	2008-10-30 14:25:28 -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: Optimize compressed writeback and reads	2008-11-06 22:02:51 -05:00
ordered-data.h	Btrfs: Add fallocate support v2	2008-10-30 14:25:28 -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: Optimize compressed writeback and reads	2008-11-06 22:02:51 -05:00
sysfs.c	Remove Btrfs compat code for older kernels	2008-09-25 15:41:59 -04:00
transaction.c	Btrfs: update nodatacow code v2	2008-10-30 14:20:02 -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: nuke fs wide allocation mutex V2	2008-10-29 14:49:05 -04:00
tree-log.c	Btrfs: Add fallocate support v2	2008-10-30 14:25:28 -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: nuke fs wide allocation mutex V2	2008-10-29 14:49:05 -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: Optimize compressed writeback and reads	2008-11-06 22:02:51 -05:00