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| author | KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2009-01-07 18:07:49 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-08 08:31:04 -0800 |
| commit | bced0520fe462bb94021dcabd32e99630c171be2 (patch) | |
| tree | 6fa234f4a25bc8231742aea13e7cc2664b0a69a6 /mm/shmem.c | |
| parent | 7a81b88cb53e335ff7d019e6398c95792c817d93 (diff) | |
| download | linux-stable-bced0520fe462bb94021dcabd32e99630c171be2.tar.gz linux-stable-bced0520fe462bb94021dcabd32e99630c171be2.tar.bz2 linux-stable-bced0520fe462bb94021dcabd32e99630c171be2.zip | |
memcg: fix gfp_mask of callers of charge
Fix misuse of gfp_kernel.
Now, most of callers of mem_cgroup_charge_xxx functions uses GFP_KERNEL.
I think that this is from the fact that page_cgroup *was* dynamically
allocated.
But now, we allocate all page_cgroup at boot. And
mem_cgroup_try_to_free_pages() reclaim memory from GFP_HIGHUSER_MOVABLE +
specified GFP_RECLAIM_MASK.
* This is because we just want to reduce memory usage.
"Where we should reclaim from ?" is not a problem in memcg.
This patch modifies gfp masks to be GFP_HIGUSER_MOVABLE if possible.
Note: This patch is not for fixing behavior but for showing sane information
in source code.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: Balbir Singh <balbir@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/shmem.c')
| -rw-r--r-- | mm/shmem.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/mm/shmem.c b/mm/shmem.c index 5941f9801363..bd9b4ea307b2 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -928,8 +928,8 @@ found: error = 1; if (!inode) goto out; - /* Precharge page using GFP_KERNEL while we can wait */ - error = mem_cgroup_cache_charge(page, current->mm, GFP_KERNEL); + /* Charge page using GFP_HIGHUSER_MOVABLE while we can wait */ + error = mem_cgroup_cache_charge(page, current->mm, GFP_HIGHUSER_MOVABLE); if (error) goto out; error = radix_tree_preload(GFP_KERNEL); @@ -1379,7 +1379,7 @@ repeat: /* Precharge page while we can wait, compensate after */ error = mem_cgroup_cache_charge(filepage, current->mm, - gfp & ~__GFP_HIGHMEM); + GFP_HIGHUSER_MOVABLE); if (error) { page_cache_release(filepage); shmem_unacct_blocks(info->flags, 1); |