linux-stable/fs/ext3
Suparna Bhattacharya 20acaa18d0 [PATCH] ext3 sequential read regression fix
ext3-get-blocks support caused ~20% degrade in Sequential read
performance (tiobench). Problem is with marking the buffer boundary
so IO can be submitted right away. Here is the patch to fix it.

  2.6.18-rc6:
  -----------
  # ./iotest
  1048576+0 records in
  1048576+0 records out
  4294967296 bytes (4.3 GB) copied, 75.2726 seconds, 57.1 MB/s

  real    1m15.285s
  user    0m0.276s
  sys     0m3.884s

  2.6.18-rc6 + fix:
  -----------------
  [root@elm3a241 ~]# ./iotest
  1048576+0 records in
  1048576+0 records out
  4294967296 bytes (4.3 GB) copied, 62.9356 seconds, 68.2 MB/s

The boundary block check in ext3_get_blocks_handle needs to be adjusted
against the count of blocks mapped in this call, now that it can map
more than one block.

Signed-off-by: Suparna Bhattacharya <suparna@in.ibm.com>
Tested-by: Badari Pulavarty <pbadari@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-16 12:54:32 -07:00
..
acl.c [PATCH] Fix two ext[23] uninitialized warnings 2006-02-03 08:32:05 -08:00
acl.h [PATCH] Remove leftover ext3 acl declarations 2006-07-10 13:24:26 -07:00
balloc.c [PATCH] ext3 filesystem bogus ENOSPC with reservation fix 2006-08-27 11:01:30 -07:00
bitmap.c [PATCH] ext3: Fix debug logging-only compilation error 2006-03-25 08:22:56 -08:00
dir.c [RBTREE] Update ext3 to use rb_parent() accessor macro. 2006-04-21 13:15:57 +01:00
file.c [PATCH] Introduce sys_splice() system call 2006-03-30 12:28:18 -08:00
fsync.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
hash.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ialloc.c [PATCH] ext3_fsblk_t: filesystem, group blocks and bug fixes 2006-06-25 10:01:10 -07:00
inode.c [PATCH] ext3 sequential read regression fix 2006-09-16 12:54:32 -07:00
ioctl.c [PATCH] ext3_fsblk_t: the rest of in-kernel filesystem blocks conversion 2006-06-25 10:01:10 -07:00
Makefile Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
namei.c [PATCH] ext3: avoid triggering ext3_error on bad NFS file handle 2006-07-31 13:28:36 -07:00
namei.h [PATCH] ext3: sparse fixes 2005-10-30 17:37:25 -08:00
resize.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
super.c [PATCH] knfsd: Make ext3 reject filehandles referring to invalid inode number 2006-09-16 12:54:31 -07:00
symlink.c Fix nasty ncpfs symlink handling bug. 2005-08-19 18:02:56 -07:00
xattr.c [PATCH] ext3_fsblk_t: the rest of in-kernel filesystem blocks conversion 2006-06-25 10:01:10 -07:00
xattr.h Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
xattr_security.c [PATCH] ext3: Enable atomic inode security labeling 2005-09-09 13:57:28 -07:00
xattr_trusted.c [PATCH] capable/capability.h (fs/) 2006-01-11 18:42:13 -08:00
xattr_user.c [PATCH] remove ext3 xattr permission checks 2006-01-10 08:01:30 -08:00