diff options
| author | Andrea Arcangeli <aarcange@redhat.com> | 2015-11-05 18:49:07 -0800 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2018-11-20 18:05:14 +0000 |
| commit | b7715f434f46bcc36517d89d0fc9f4c8f80b57ef (patch) | |
| tree | b0a0eb5407eff3bd2ace4887648cf9ad967de37d /mm | |
| parent | a58e2a7a577dad00014fc9e4427a4d0e7997c81a (diff) | |
ksm: add cond_resched() to the rmap_walks
commit ad12695f177c3403a64348b42718faf9727fe358 upstream.
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>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/ksm.c | 2 | ||||
| -rw-r--r-- | mm/rmap.c | 4 |
2 files changed, 6 insertions, 0 deletions
@@ -1915,9 +1915,11 @@ 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 044dcbc770cc..0ebe6ab837c6 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -1486,6 +1486,8 @@ 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; @@ -1533,6 +1535,8 @@ 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; |