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linux-stable/fs/ext4
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Zheng Liu 2f8e0a7c6c ext4: cache extent hole in extent status tree for ext4_da_map_blocks() 
Currently extent status tree doesn't cache extent hole when a write
looks up in extent tree to make sure whether a block has been allocated
or not.  In this case, we don't put extent hole in extent cache because
later this extent might be removed and a new delayed extent might be
added back.  But it will cause a defect when we do a lot of writes.  If
we don't put extent hole in extent cache, the following writes also need
to access extent tree to look at whether or not a block has been
allocated.  It brings a cache miss.  This commit fixes this defect.
Also if the inode doesn't have any extent, this extent hole will be
cached as well.

Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Signed-off-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2014-11-25 11:44:37 -05:00
..
acl.c ext2/3/4: use generic posix ACL infrastructure 2014-01-25 23:58:19 -05:00
acl.h ext2/3/4: use generic posix ACL infrastructure 2014-01-25 23:58:19 -05:00
balloc.c ext4: move error report out of atomic context in ext4_init_block_bitmap() 2014-10-13 03:42:12 -04:00
bitmap.c ext4: Replace open coded mdata csum feature to helper function 2014-10-13 03:36:16 -04:00
block_validity.c fs/ext4: use rbtree postorder iteration helper instead of opencoding 2014-01-23 16:37:03 -08:00
dir.c ext4: convert ext4_bread() to use the ERR_PTR convention 2014-08-29 20:52:15 -04:00
ext4.h ext4: cache extent hole in extent status tree for ext4_da_map_blocks() 2014-11-25 11:44:37 -05:00
ext4_extents.h ext4: teach ext4_ext_find_extent() to realloc path if necessary 2014-09-01 14:40:09 -04:00
ext4_jbd2.c ext4: fix over-defensive complaint after journal abort 2014-10-01 22:23:15 -04:00
ext4_jbd2.h ext4: don't use MAXQUOTAS value 2014-09-11 11:15:15 -04:00
extents.c ext4: cache extent hole in extent status tree for ext4_da_map_blocks() 2014-11-25 11:44:37 -05:00
extents_status.c A large number of cleanups and bug fixes, with some (minor) journal 2014-10-20 09:50:11 -07:00
extents_status.h ext4: track extent status tree shrinker delay statictics 2014-09-01 22:26:49 -04:00
file.c ext4: prevent bugon on race between write/fcntl 2014-10-30 10:53:16 -04:00
fsync.c ext4: Fix fsync error handling after filesystem abort 2013-06-12 22:38:04 -04:00
hash.c ext4: reduce one "if" comparison in ext4_dirhash() 2013-02-01 22:33:21 -05:00
ialloc.c ext4: fix oops when loading block bitmap failed 2014-10-30 10:53:16 -04:00
indirect.c ext4: prepare to drop EXT4_STATE_DELALLOC_RESERVED 2014-09-04 18:07:25 -04:00
inline.c ext4: Replace open coded mdata csum feature to helper function 2014-10-13 03:36:16 -04:00
inode.c ext4: cache extent hole in extent status tree for ext4_da_map_blocks() 2014-11-25 11:44:37 -05:00
ioctl.c ext4: Replace open coded mdata csum feature to helper function 2014-10-13 03:36:16 -04:00
Kconfig ext4: fix Kconfig documentation for CONFIG_EXT4_DEBUG 2013-04-21 20:32:03 -04:00
Makefile ext4: Remove CONFIG_EXT4_FS_XATTR 2012-12-10 16:30:43 -05:00
mballoc.c ext4: kill ext4_kvfree() 2014-11-20 12:19:11 -05:00
mballoc.h ext4: remove unused ac_ex_scanned 2014-02-20 13:32:10 -05:00
migrate.c ext4: rename ext4_ext_find_extent() to ext4_find_extent() 2014-09-01 14:43:09 -04:00
mmp.c ext4: Replace open coded mdata csum feature to helper function 2014-10-13 03:36:16 -04:00
move_extent.c ext4: move_extent improve bh vanishing success factor 2014-11-05 11:52:38 -05:00
namei.c ext4: bail out from make_indexed_dir() on first error 2014-10-30 10:53:17 -04:00
page-io.c Clean ups and miscellaneous bug fixes, in particular for the new 2014-06-08 13:03:35 -07:00
resize.c ext4: kill ext4_kvfree() 2014-11-20 12:19:11 -05:00
super.c ext4: kill ext4_kvfree() 2014-11-20 12:19:11 -05:00
symlink.c ext4: Remove CONFIG_EXT4_FS_XATTR 2012-12-10 16:30:43 -05:00
truncate.h ext4: move common truncate functions to header file 2011-06-27 19:16:04 -04:00
xattr.c ext4: Replace open coded mdata csum feature to helper function 2014-10-13 03:36:16 -04:00
xattr.h ext4: each filesystem creates and uses its own mb_cache 2014-03-18 19:24:49 -04:00
xattr_security.c Merge branch 'for_linus' into for_linus_merged 2012-01-10 11:54:07 -05:00
xattr_trusted.c ext2/3/4: delete unneeded includes of module.h 2012-01-09 13:52:10 +01:00
xattr_user.c ext2/3/4: delete unneeded includes of module.h 2012-01-09 13:52:10 +01:00