Josef Bacik a67509c300 Btrfs: add a io_ctl struct and helpers for dealing with the space cache ... In writing and reading the space cache we have one big loop that keeps track of which page we are on and then a bunch of sizeable loops underneath this big loop to try and read/write out properly. Especially in the write case this makes things hugely complicated and hard to follow, and makes our error checking and recovery equally as complex. So add a io_ctl struct with a bunch of helpers to keep track of the pages we have, where we are, if we have enough space etc. This unifies how we deal with the pages we're writing and keeps all the messy tracking internal. This allows us to kill the big loops in both the read and write case and makes reviewing and chaning the write and read paths much simpler. I've run xfstests and stress.sh on this code and it survives. Thanks, Signed-off-by: Josef Bacik <josef@redhat.com>		2011-10-19 15:12:52 -04:00
..
acl.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable	2011-08-02 21:14:05 -10:00
async-thread.c	Btrfs: don't walk around with task->state != TASK_RUNNING	2010-05-25 10:34:58 -04:00
async-thread.h	Btrfs: fix deadlock on async thread startup	2009-10-05 09:44:45 -04:00
btrfs_inode.h	Btrfs: calculate checksum space correctly	2011-10-19 15:12:31 -04:00
compat.h	Btrfs: drop remaining LINUX_KERNEL_VERSION checks and compat code	2009-01-06 09:38:55 -05:00
compression.c	Btrfs: check the nodatasum flag when writing compressed files	2011-08-01 14:30:46 -04:00
compression.h	btrfs: rename variables clashing with global function names	2011-05-02 13:57:19 +02:00
ctree.c	Btrfs: remove lockdep magic from btrfs_next_leaf	2011-07-27 12:46:47 -04:00
ctree.h	Btrfs: allow us to overcommit our enospc reservations	2011-10-19 15:12:50 -04:00
delayed-inode.c	Btrfs: switch the btrfs tree locks to reader/writer	2011-07-27 12:46:46 -04:00
delayed-inode.h	atomic: use <linux/atomic.h>	2011-07-26 16:49:47 -07:00
delayed-ref.c	btrfs: remove old unused commented out code	2011-05-06 12:34:10 +02:00
delayed-ref.h	btrfs: remove all unused functions	2011-05-06 12:34:03 +02:00
dir-item.c	Btrfs: remove redundant code for dir item lookup	2011-08-01 14:30:48 -04:00
disk-io.c	Btrfs: allow us to overcommit our enospc reservations	2011-10-19 15:12:50 -04:00
disk-io.h	Btrfs: make a lockdep class for each root	2011-07-27 12:46:46 -04:00
export.c	Merge branch 'ino-alloc' of git://repo.or.cz/linux-btrfs-devel into inode_numbers	2011-05-21 09:27:38 -04:00
export.h
extent-tree.c	Btrfs: introduce mount option no_space_cache	2011-10-19 15:12:51 -04:00
extent_io.c	Btrfs: introduce convert_extent_bit	2011-10-19 15:12:47 -04:00
extent_io.h	Btrfs: stop using write_one_page	2011-10-19 15:12:48 -04:00
extent_map.c	Btrfs: clean up code for merging extent maps	2011-08-01 14:30:50 -04:00
extent_map.h	btrfs: drop gfp parameter from alloc_extent_map	2011-05-02 13:57:21 +02:00
file-item.c	Btrfs: skip locking if searching the commit root in csum lookup	2011-09-11 10:52:24 -04:00
file.c	Btrfs: use the inode's mapping mask for allocating pages	2011-10-19 15:12:45 -04:00
free-space-cache.c	Btrfs: add a io_ctl struct and helpers for dealing with the space cache	2011-10-19 15:12:52 -04:00
free-space-cache.h	btrfs: remove all unused functions	2011-05-06 12:34:03 +02:00
hash.h	Btrfs: remove crc32c.h and use libcrc32c directly.	2009-06-10 11:29:53 -04:00
inode-item.c	Btrfs: BUG_ON is deleted from the caller of btrfs_truncate_item & btrfs_extend_item	2011-05-23 13:24:39 -04:00
inode-map.c	Btrfs: handle enospc accounting for free space inodes	2011-10-19 15:12:42 -04:00
inode-map.h	Btrfs: Support reading/writing on disk free ino cache	2011-04-25 16:46:11 +08:00
inode.c	Btrfs: break out of orphan cleanup if we can't make progress	2011-10-19 15:12:49 -04:00
ioctl.c	Btrfs: only inherit btrfs specific flags when creating files	2011-10-19 15:12:50 -04:00
ioctl.h	Btrfs: add mount -o auto_defrag	2011-05-26 17:52:15 -04:00
Kconfig	btrfs: Add lzo compression support	2010-12-22 23:15:47 +08:00
locking.c	Btrfs: switch the btrfs tree locks to reader/writer	2011-07-27 12:46:46 -04:00
locking.h	Btrfs: switch the btrfs tree locks to reader/writer	2011-07-27 12:46:46 -04:00
lzo.c	Btrfs: Avoid accessing unmapped kernel address	2011-02-16 15:37:58 -05:00
Makefile	Btrfs: make acl functions really no-op if acl is not enabled	2011-08-01 14:30:48 -04:00
ordered-data.c	Btrfs: add initial tracepoint support for btrfs	2011-03-28 05:37:33 -04:00
ordered-data.h	btrfs: Allow to add new compression algorithm	2010-12-22 23:15:45 +08:00
orphan.c	Btrfs: fixup return code for btrfs_del_orphan_item	2010-12-09 13:57:15 -05:00
print-tree.c	btrfs: fix missing break in switch phrase	2011-01-28 16:40:37 -05:00
print-tree.h
relocation.c	Btrfs: use the inode's mapping mask for allocating pages	2011-10-19 15:12:45 -04:00
root-tree.c	btrfs: make btrfs_set_root_node void	2011-08-01 14:30:44 -04:00
scrub.c	btrfs: remove unneeded includes from scrub.c	2011-06-10 14:59:52 +02:00
struct-funcs.c	Btrfs: stop using highmem for extent_buffers	2011-07-27 12:46:45 -04:00
super.c	Btrfs: introduce mount option no_space_cache	2011-10-19 15:12:51 -04:00
sysfs.c	btrfs: Remove unused sysfs code	2011-06-17 14:54:18 -04:00
transaction.c	Btrfs: introduce mount option no_space_cache	2011-10-19 15:12:51 -04:00
transaction.h	Merge branch 'for-chris' of	2011-05-28 07:00:39 -04:00
tree-defrag.c	btrfs: drop unused parameter from btrfs_release_path	2011-05-02 13:57:22 +02:00
tree-log.c	Btrfs: fix an oops of log replay	2011-08-16 21:09:15 -04:00
tree-log.h	btrfs: remove unused function prototypes	2011-05-04 14:01:26 +02:00
version.h
volumes.c	Btrfs: allow us to overcommit our enospc reservations	2011-10-19 15:12:50 -04:00
volumes.h	Btrfs: detect wether a device supports discard	2011-08-16 21:09:15 -04:00
xattr.c	btrfs: xattr: fix attribute removal	2011-09-11 10:52:25 -04:00
xattr.h	fs/vfs/security: pass last path component to LSM on inode creation	2011-02-01 11:12:29 -05:00
zlib.c	zlib: slim down zlib_deflate() workspace when possible	2011-03-22 17:44:17 -07:00