Pekka Enberg 5df096d67e ext3: allocate ->s_blockgroup_lock separately ...

As spotted by kmemtrace, struct ext3_sb_info is 17152 bytes on 64-bit
which makes it a very bad fit for SLAB allocators.  The culprit of the
wasted memory is ->s_blockgroup_lock which can be as big as 16 KB when
NR_CPUS >= 32.

To fix that, allocate ->s_blockgroup_lock, which fits nicely in a order 2
page in the worst case, separately.  This shinks down struct ext3_sb_info
enough to fit a 1 KB slab cache so now we allocate 16 KB + 1 KB instead of
32 KB saving 15 KB of memory.

Acked-by: Andreas Dilger <adilger@sun.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2009-01-08 08:31:00 -08:00

..

acl.c

[PATCH] sanitize ->permission() prototype

2008-07-26 20:53:14 -04:00

acl.h

[PATCH] sanitize ->permission() prototype

2008-07-26 20:53:14 -04:00

balloc.c

CRED: Wrap task credential accesses in the Ext3 filesystem

2008-11-14 10:38:51 +11:00

bitmap.c

fs: mark nibblemap const

2007-10-17 08:42:47 -07:00

dir.c

ext3: Fix duplicate entries returned from getdents() system call

2008-10-25 22:37:44 -04:00

ext3_jbd.c

ext3: replace remaining __FUNCTION__ occurrences

2008-04-28 08:58:45 -07:00

file.c

generic block based fiemap implementation

2008-10-03 17:32:43 -04:00

fsync.c

ext3: fdatasync should skip metadata writeout when overwriting

2008-04-28 08:58:43 -07:00

hash.c

[PATCH] remove many unneeded #includes of sched.h

2007-02-14 08:09:54 -08:00

ialloc.c

nfsd race fixes: ext3

2008-12-31 18:07:44 -05:00

inode.c

fs: symlink write_begin allocation context fix

2009-01-04 13:33:20 -08:00

ioctl.c

ext3: add checks for errors from jbd

2008-10-23 08:55:01 -07:00

Kconfig

fs/Kconfig: move ext2, ext3, ext4, JBD, JBD2 out

2008-10-20 11:43:59 -07:00

Makefile

[PATCH] ext3: uninline large functions

2006-12-07 08:39:35 -08:00

namei.c

fs: symlink write_begin allocation context fix

2009-01-04 13:33:20 -08:00

namei.h

[PATCH] ext3: sparse fixes

2005-10-30 17:37:25 -08:00

resize.c

ext3: don't try to resize if there are no reserved gdt blocks left

2008-10-20 08:52:37 -07:00

super.c

ext3: allocate ->s_blockgroup_lock separately

2009-01-08 08:31:00 -08:00

symlink.c

[PATCH] mark struct inode_operations const 1

2007-02-12 09:48:46 -08:00

xattr_security.c

ext3: remove double definitions of xattr macros

2008-07-25 10:53:32 -07:00

xattr_trusted.c

ext3: remove double definitions of xattr macros

2008-07-25 10:53:32 -07:00

xattr_user.c

ext3: remove double definitions of xattr macros

2008-07-25 10:53:32 -07:00

xattr.c

ext3/4: fix uninitialized bs in ext3/4_xattr_set_handle()

2008-05-14 19:11:14 -07:00

xattr.h

make ext3_xattr_list() static

2008-04-28 08:58:44 -07:00