linux/fs/ext2
Eric Sandeen 40a063f669 ext2: speed up file creates by optimizing rec_len functions
The addition of 64k block capability in the rec_len_from_disk
and rec_len_to_disk functions added a bit of math overhead which
slows down file create workloads needlessly when the architecture
cannot even support 64k blocks, thanks to page size limits.

The directory entry checking can also be optimized a bit
by sprinkling in some unlikely() conditions to move the
error handling out of line.

bonnie++ sequential file creates on a 512MB ramdisk speeds up
from about 2200/s to about 2500/s, about a 14% improvement.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Jan Kara <jack@suse.cz>
2011-01-10 19:04:06 +01:00
..
acl.c ext2: update ctime when changing the file's permission by setfacl 2010-06-25 01:20:37 +02:00
acl.h ext[234]: move over to 'check_acl' permission model 2009-09-08 11:09:04 -07:00
balloc.c ext2: fix comment on ext2_try_to_allocate() 2010-10-28 01:30:01 +02:00
dir.c ext2: speed up file creates by optimizing rec_len functions 2011-01-10 19:04:06 +01:00
ext2.h fs: add sync_inode_metadata 2010-10-25 21:18:19 -04:00
file.c ext2: convert to use the new truncate convention. 2010-05-27 22:15:57 -04:00
ialloc.c merge ext2 delete_inode and clear_inode, switch to ->evict_inode() 2010-08-09 16:47:57 -04:00
inode.c ext2: fixed typo. 2010-10-28 01:30:05 +02:00
ioctl.c headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
Kconfig fs/Kconfig: move ext2, ext3, ext4, JBD, JBD2 out 2008-10-20 11:43:59 -07:00
Makefile switch ext2 to simple_fsync() 2009-06-11 21:36:12 -04:00
namei.c new helper: ihold() 2010-10-25 21:26:11 -04:00
super.c fs/ext2/super.c: Use printf extension %pV 2011-01-06 11:52:14 +01:00
symlink.c ext2: symlink must be handled via filesystem specific operation 2010-04-12 21:11:25 +02:00
xattr.c fs: add sync_inode_metadata 2010-10-25 21:18:19 -04:00
xattr.h ext2: constify xattr_handler 2010-05-21 18:31:18 -04:00
xattr_security.c ext2: constify xattr_handler 2010-05-21 18:31:18 -04:00
xattr_trusted.c ext2: constify xattr_handler 2010-05-21 18:31:18 -04:00
xattr_user.c ext2: constify xattr_handler 2010-05-21 18:31:18 -04:00
xip.c ext2: Unify log messages in ext2 2009-12-10 15:02:52 +01:00
xip.h xip: support non-struct page backed memory 2008-04-28 08:58:23 -07:00