[PATCH v2] ext4: group info caches set to SLAB_MEM_SPREAD flags.

[Namjae Jeon <linkinjeon@gmail.com>]

I try to set to SLAB_MEM_SPREAD flags in groups info caches accoding to http://lwn.net/Articles/173654/.
And other filesystems have already set to this flags when using slab caches in fs.
I believe that it is useful by original Paul jackson's patch and other fs is currently using this flags.
Ted's opinion is that theoretically it would be sound to have that flag set with groups info slab cache.

Signed-off-by: Namjae Jeon <linkinjeon@gmail.com>
Signed-off-by: Amit Sahrawat <amit.sahrawat83@gmail.com>
---
 fs/ext4/mballoc.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index e2d8be8..7aacbbe 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -2407,7 +2407,8 @@ static int ext4_groupinfo_create_slab(size_t size)
 				bb_counters[blocksize_bits + 2]);
 
 	cachep = kmem_cache_create(ext4_groupinfo_slab_names[cache_index],
-					slab_size, 0, SLAB_RECLAIM_ACCOUNT,
+					slab_size, 0, SLAB_RECLAIM_ACCOUNT |
+					SLAB_MEM_SPREAD,
 					NULL);
 
 	ext4_groupinfo_caches[cache_index] = cachep;
-- 
1.7.4.4