android_kernel_motorola_sm6225/fs/ext4
Theodore Ts'o b616844310 ext4: optimize ext4_bio_write_page() when no extent conversion is needed
If no extent conversion is required, wake up any processes waiting for
the page's writeback to be complete and free the ext4_io_end structure
directly in ext4_end_bio() instead of dropping it on the linked list
(which requires taking a spinlock to queue and dequeue the io_end
structure), and waiting for the workqueue to do this work.

This removes an extra scheduling delay before process waiting for an
fsync() to complete gets woken up, and it also reduces the CPU
overhead for a random write workload.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2011-02-28 13:12:38 -05:00
..
acl.c ext2,3,4: provide simple rcu-walk ACL implementation 2011-01-07 17:50:30 +11:00
acl.h fs: provide rcu-walk aware permission i_ops 2011-01-07 17:50:29 +11:00
balloc.c ext4: replace i_delalloc_reserved_flag with EXT4_STATE_DELALLOC_RESERVED 2011-01-10 12:12:36 -05:00
bitmap.c ext4: Change unsigned long to unsigned int 2008-11-05 00:14:04 -05:00
block_validity.c ext4: rename {exit,init}_ext4_*() to ext4_{exit,init}_*() 2010-10-27 21:30:14 -04:00
dir.c ext4: Use ext4_error_file() to print the pathname to the corrupted inode 2011-01-10 12:10:55 -05:00
ext4.h ext4: serialize unaligned asynchronous DIO 2011-02-12 08:17:34 -05:00
ext4_extents.h ext4: drop ec_type from the ext4_ext_cache structure 2011-01-10 12:13:26 -05:00
ext4_jbd2.c ext4: Pass line numbers to ext4_error() and friends 2010-07-27 11:56:40 -04:00
ext4_jbd2.h ext4: dynamically allocate the jbd2_inode in ext4_inode_info as necessary 2011-01-10 12:29:43 -05:00
extents.c ext4: make FIEMAP and delayed allocation play well together 2011-02-27 17:25:47 -05:00
file.c ext4: serialize unaligned asynchronous DIO 2011-02-12 08:17:34 -05:00
fsync.c ext4: flush the i_completed_io_list during ext4_truncate 2011-01-10 12:47:05 -05:00
hash.c ext4: Add support for non-native signed/unsigned htree hash algorithms 2008-10-28 13:21:44 -04:00
ialloc.c ext4: Fix sparse warning: Using plain integer as NULL pointer 2011-02-21 21:01:42 -05:00
inode.c ext4: use the nblocks arg to ext4_truncate_restart_trans() 2011-02-27 23:32:12 -05:00
ioctl.c ext4: Adjust minlen with discard_granularity in the FITRIM ioctl 2011-02-23 17:49:51 -05:00
Kconfig ext4: Don't ask about supporting ext2/3 in ext4 if ext4 is not configured 2009-12-21 10:54:09 -05:00
Makefile ext4: use bio layer instead of buffer layer in mpage_da_submit_io 2010-10-27 21:30:10 -04:00
mballoc.c ext4: suppress verbose debugging information if malloc-debug is off 2011-02-27 17:23:47 -05:00
mballoc.h ext4: clarify description of ac_g_ex in struct ext4_allocation_context 2011-02-24 14:10:00 -05:00
migrate.c ext4: Fix sparse warning: Using plain integer as NULL pointer 2011-02-21 21:01:42 -05:00
move_extent.c ext4: rename {ext,idx}_pblock and inline small extent functions 2010-10-27 21:30:14 -04:00
namei.c ext4: add error checking to calls to ext4_handle_dirty_metadata() 2011-01-10 12:46:59 -05:00
page-io.c ext4: optimize ext4_bio_write_page() when no extent conversion is needed 2011-02-28 13:12:38 -05:00
resize.c ext4: fix compile warnings with EXT4FS_DEBUG enabled 2011-02-21 20:39:58 -05:00
super.c ext4: skip orphan cleanup if fs has unknown ROCOMPAT features 2011-02-28 00:53:45 -05:00
symlink.c ext4: symlink must be handled via filesystem specific operation 2010-05-16 02:00:00 -04:00
xattr.c ext4: Fix sparse warning: Using plain integer as NULL pointer 2011-02-21 21:01:42 -05:00
xattr.h ext4: fix compile with CONFIG_EXT4_FS_XATTR disabled 2010-10-28 09:29:17 -07:00
xattr_security.c ext4: constify xattr_handler 2010-05-21 18:31:19 -04:00
xattr_trusted.c ext4: constify xattr_handler 2010-05-21 18:31:19 -04:00
xattr_user.c ext4: constify xattr_handler 2010-05-21 18:31:19 -04:00