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240799cdf2
linux/fs/ext4
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Theodore Ts'o 240799cdf2 ext4: Use readahead when reading an inode from the inode table 
With modern hard drives, reading 64k takes roughly the same time as
reading a 4k block.  So request readahead for adjacent inode table
blocks to reduce the time it takes when iterating over directories
(especially when doing this in htree sort order) in a cold cache case.
With this patch, the time it takes to run "git status" on a kernel
tree after flushing the caches via "echo 3 > /proc/sys/vm/drop_caches"
is reduced by 21%.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2008-10-09 23:53:47 -04:00
..
acl.c [PATCH] sanitize ->permission() prototype 2008-07-26 20:53:14 -04:00
acl.h ext4: Fix whitespace checkpatch warnings/errors 2008-09-08 22:25:24 -04:00
balloc.c ext4: Don't add the inode to journal handle until after the block is allocated 2008-09-08 23:08:40 -04:00
bitmap.c ext4: Fix whitespace checkpatch warnings/errors 2008-09-08 22:25:24 -04:00
dir.c ext4: Avoid printk floods in the face of directory corruption 2008-10-09 11:15:52 -04:00
ext4_extents.h ext4: journal credits reservation fixes for extent file writepage 2008-08-19 22:16:05 -04:00
ext4_i.h ext4: delayed allocation ENOSPC handling 2008-07-14 17:52:37 -04:00
ext4_jbd2.c ext4: move headers out of include/linux 2008-04-29 18:13:32 -04:00
ext4_jbd2.h ext4: journal credits calulation cleanup and fix for non-extent writepage 2008-08-19 22:16:07 -04:00
ext4_sb.h ext4: Use readahead when reading an inode from the inode table 2008-10-09 23:53:47 -04:00
ext4.h ext4: Use readahead when reading an inode from the inode table 2008-10-09 23:53:47 -04:00
extents.c ext4: Properly update i_disksize. 2008-09-13 13:06:18 -04:00
file.c ext4: Fix whitespace checkpatch warnings/errors 2008-09-08 22:25:24 -04:00
fsync.c ext4: Fix whitespace checkpatch warnings/errors 2008-09-08 22:25:24 -04:00
group.h ext4: Rename read_block_bitmap() to ext4_read_block_bitmap() 2008-07-11 19:27:31 -04:00
hash.c ext4: Fix whitespace checkpatch warnings/errors 2008-09-08 22:25:24 -04:00
ialloc.c ext4: Fix whitespace checkpatch warnings/errors 2008-09-08 22:25:24 -04:00
inode.c ext4: Use readahead when reading an inode from the inode table 2008-10-09 23:53:47 -04:00
ioctl.c ext4: hook the ext3 migration interface to the EXT4_IOC_SETFLAGS ioctl 2008-10-08 23:34:06 -04:00
Makefile ext4: Add multi block allocator for ext4 2008-01-29 00:19:52 -05:00
mballoc.c ext4: Combine proc file handling into a single set of functions 2008-09-23 18:07:35 -04:00
mballoc.h ext4: move /proc setup and teardown out of mballoc.c 2008-09-23 09:18:24 -04:00
migrate.c ext4: elevate write count for migrate ioctl 2008-09-13 12:52:26 -04:00
namei.c ext4: Don't use 'struct dentry' for internal lookups 2008-09-22 15:21:01 -04:00
namei.h
resize.c ext4: Fix whitespace checkpatch warnings/errors 2008-09-08 22:25:24 -04:00
super.c ext4: Use readahead when reading an inode from the inode table 2008-10-09 23:53:47 -04:00
symlink.c ext4: Fix whitespace checkpatch warnings/errors 2008-09-08 22:25:24 -04:00
xattr_security.c ext4: move headers out of include/linux 2008-04-29 18:13:32 -04:00
xattr_trusted.c ext4: remove double definitions of xattr macros 2008-07-11 19:27:31 -04:00
xattr_user.c ext4: remove double definitions of xattr macros 2008-07-11 19:27:31 -04:00
xattr.c ext4: Cleanup whitespace and other miscellaneous style issues 2008-07-26 16:15:44 -04:00
xattr.h ext4: Fix whitespace checkpatch warnings/errors 2008-09-08 22:25:24 -04:00