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| author | David Rientjes <rientjes@google.com> | 2008-02-09 00:10:15 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-09 11:08:33 -0800 |
| commit | 60c12b1202a60eabb1c61317e5d2678fcea9893f (patch) | |
| tree | 143e5bdbd10d32832fce9183500deebad6c6e4db /mm | |
| parent | 6966a97753854c8b5336cf3997d5d1d205d91b12 (diff) | |
| download | kernel-common-60c12b1202a60eabb1c61317e5d2678fcea9893f.tar.gz kernel-common-60c12b1202a60eabb1c61317e5d2678fcea9893f.tar.bz2 kernel-common-60c12b1202a60eabb1c61317e5d2678fcea9893f.zip | |
memcontrol: add vm_match_cgroup()
mm_cgroup() is exclusively used to test whether an mm's mem_cgroup pointer
is pointing to a specific cgroup. Instead of returning the pointer, we can
just do the test itself in a new macro:
vm_match_cgroup(mm, cgroup)
returns non-zero if the mm's mem_cgroup points to cgroup. Otherwise it
returns zero.
Signed-off-by: David Rientjes <rientjes@google.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memcontrol.c | 2 | ||||
| -rw-r--r-- | mm/rmap.c | 4 |
2 files changed, 3 insertions, 3 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 5c2c702af617..6bded84c20c8 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -399,7 +399,7 @@ int task_in_mem_cgroup(struct task_struct *task, const struct mem_cgroup *mem) int ret; task_lock(task); - ret = task->mm && mm_cgroup(task->mm) == mem; + ret = task->mm && vm_match_cgroup(task->mm, mem); task_unlock(task); return ret; } diff --git a/mm/rmap.c b/mm/rmap.c index a0e92a263d12..8fd527c4e2bf 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -321,7 +321,7 @@ static int page_referenced_anon(struct page *page, * counting on behalf of references from different * cgroups */ - if (mem_cont && (mm_cgroup(vma->vm_mm) != mem_cont)) + if (mem_cont && !vm_match_cgroup(vma->vm_mm, mem_cont)) continue; referenced += page_referenced_one(page, vma, &mapcount); if (!mapcount) @@ -382,7 +382,7 @@ static int page_referenced_file(struct page *page, * counting on behalf of references from different * cgroups */ - if (mem_cont && (mm_cgroup(vma->vm_mm) != mem_cont)) + if (mem_cont && !vm_match_cgroup(vma->vm_mm, mem_cont)) continue; if ((vma->vm_flags & (VM_LOCKED|VM_MAYSHARE)) == (VM_LOCKED|VM_MAYSHARE)) { |