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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/swapfile.c | |
| parent | 7a81b88cb53e335ff7d019e6398c95792c817d93 (diff) | |
| download | linux-3.10-bced0520fe462bb94021dcabd32e99630c171be2.tar.gz linux-3.10-bced0520fe462bb94021dcabd32e99630c171be2.tar.bz2 linux-3.10-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/swapfile.c')
| -rw-r--r-- | mm/swapfile.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/swapfile.c b/mm/swapfile.c index fb926efb516..ddc6d92be2c 100644 --- a/mm/swapfile.c +++ b/mm/swapfile.c @@ -695,7 +695,7 @@ static int unuse_pte(struct vm_area_struct *vma, pmd_t *pmd, pte_t *pte; int ret = 1; - if (mem_cgroup_try_charge(vma->vm_mm, GFP_KERNEL, &ptr)) + if (mem_cgroup_try_charge(vma->vm_mm, GFP_HIGHUSER_MOVABLE, &ptr)) ret = -ENOMEM; pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl); |