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| author | Andrea Arcangeli <aarcange@redhat.com> | 2015-11-06 05:49:07 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-11-06 06:34:48 +0300 |
| commit | ad12695f177c3403a64348b42718faf9727fe358 (patch) | |
| tree | 1638831bffe23bcf83170c534102e912c2d7637a | |
| parent | df4065516b0dbfa35ac0e9b8124d441221c0a285 (diff) | |
| download | linux-ad12695f177c3403a64348b42718faf9727fe358.tar.xz | |
ksm: add cond_resched() to the rmap_walks
While at it add it to the file and anon walks too.
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: Petr Holasek <pholasek@redhat.com>
Acked-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/ksm.c | 2 | ||||
| -rw-r--r-- | mm/rmap.c | 4 |
2 files changed, 6 insertions, 0 deletions
@@ -1914,9 +1914,11 @@ again: struct anon_vma_chain *vmac; struct vm_area_struct *vma; + cond_resched(); anon_vma_lock_read(anon_vma); anon_vma_interval_tree_foreach(vmac, &anon_vma->rb_root, 0, ULONG_MAX) { + cond_resched(); vma = vmac->vma; if (rmap_item->address < vma->vm_start || rmap_item->address >= vma->vm_end) diff --git a/mm/rmap.c b/mm/rmap.c index d40e7aefb888..78a692827a63 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -1609,6 +1609,8 @@ static int rmap_walk_anon(struct page *page, struct rmap_walk_control *rwc) struct vm_area_struct *vma = avc->vma; unsigned long address = vma_address(page, vma); + cond_resched(); + if (rwc->invalid_vma && rwc->invalid_vma(vma, rwc->arg)) continue; @@ -1658,6 +1660,8 @@ static int rmap_walk_file(struct page *page, struct rmap_walk_control *rwc) vma_interval_tree_foreach(vma, &mapping->i_mmap, pgoff, pgoff) { unsigned long address = vma_address(page, vma); + cond_resched(); + if (rwc->invalid_vma && rwc->invalid_vma(vma, rwc->arg)) continue; |