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Chris Mason 6ac0f4884e Btrfs: add a plugging callback to raid56 writes 
Buffered writes and DIRECT_IO writes will often break up
big contiguous changes to the file into sub-stripe writes.

This adds a plugging callback to gather those smaller writes full stripe
writes.

Example on flash:

fio job to do 64K writes in batches of 3 (which makes a full stripe):

With plugging: 450MB/s
Without plugging: 220MB/s

Signed-off-by: Chris Mason <chris.mason@fusionio.com>
2013-02-01 14:24:24 -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
Btrfs: call the ordered free operation without any locks held
2012-07-25 16:15:07 -04:00
async-thread.h
btrfs: return void in functions without error conditions
2012-03-22 01:45:34 +01:00
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
Btrfs: add optional integrity check code
2011-12-21 19:14:09 +01:00
compat.h
Btrfs: drop remaining LINUX_KERNEL_VERSION checks and compat code
2009-01-06 09:38:55 -05:00
compression.c
Btrfs: add rw argument to merge_bio_hook()
2013-02-01 11:49:47 -05:00
compression.h
btrfs: return void in functions without error conditions
2012-03-22 01:45:34 +01:00
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
Btrfs: flush delayed inodes if we're short on space
2012-07-23 15:41:40 -04:00
delayed-ref.c
Btrfs: allow delayed refs to be merged
2012-08-28 16:53:38 -04:00
delayed-ref.h
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2012-10-01 09:06:36 -07:00
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
->encode_fh() API change
2012-05-29 23:28:33 -04:00
export.h
NFS support for btrfs - v3
2008-09-25 11:04:06 -04:00
extent_io.c
Btrfs: RAID5 and RAID6
2013-02-01 14:24:23 -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
extent-tree.c
Btrfs: RAID5 and RAID6
2013-02-01 14:24:23 -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
btrfs: remove all unused functions
2011-05-06 12:34:03 +02:00
hash.h
btrfs: extended inode refs
2012-10-09 09:14:45 -04:00
inode-item.c
btrfs: extended inode refs
2012-10-09 09:14:45 -04:00
inode-map.c
Btrfs: improve the noflush reservation
2012-12-11 13:31:31 -05:00
inode-map.h
Btrfs: Support reading/writing on disk free ino cache
2011-04-25 16:46:11 +08:00
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
Btrfs: fix a misplaced address operator in a condition
2012-08-28 16:53:23 -04:00
locking.h
btrfs: return void in functions without error conditions
2012-03-22 01:45:34 +01:00
lzo.c
btrfs: remove the second argument of k[un]map_atomic()
2012-03-20 21:48:21 +08:00
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
btrfs: replace many BUG_ONs with proper error handling
2012-03-22 11:52:54 +01:00
print-tree.c
Btrfs: introduce a btrfs_dev_replace_item type
2012-12-12 17:15:38 -05:00
print-tree.h
Btrfs: Create extent_buffer interface for large blocksizes
2008-09-25 11:03:56 -04:00
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
Btrfs: use rcu to protect device->name
2012-06-14 21:29:16 -04:00
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
Btrfs: write_buf is now callable outside send.c
2012-10-04 09:39:55 -04:00
struct-funcs.c
Btrfs: rewrite BTRFS_SETGET_FUNCS
2012-07-23 16:28:06 -04:00
super.c
Btrfs: use slabs for auto defrag allocation
2012-12-16 20:46:11 -05:00
sysfs.c
btrfs: Remove unused sysfs code
2011-06-17 14:54:18 -04:00
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
btrfs: drop unused parameter from btrfs_release_path
2011-05-02 13:57:22 +02:00
tree-log.c
Btrfs: use tokens where we can in the tree log
2012-12-16 20:46:26 -05:00
tree-log.h
btrfs: return void in functions without error conditions
2012-03-22 01:45:34 +01:00
ulist.c
Btrfs: make aux field of ulist 64 bit
2012-10-01 15:18:53 -04:00
ulist.h
Btrfs: make aux field of ulist 64 bit
2012-10-01 15:18:53 -04:00
version.h
Update Btrfs files for in-kernel usage
2008-09-25 15:41:59 -04:00
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
fs/vfs/security: pass last path component to LSM on inode creation
2011-02-01 11:12:29 -05:00
zlib.c
btrfs: fix message printing
2012-10-09 09:19:57 -04:00