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mm: pincer in truncate_inode_pages_range 

truncate_inode_pages_range()'s final loop has a nice pincer property,
bringing start and end together, squeezing out the last pages.  But the
range handling missed out on that, just sliding up the range, perhaps
letting pages come in behind it.  Add one more test to give it the same
pincer effect.

Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Hugh Dickins 2011-07-25 17:12:25 -07:00 committed by Linus Torvalds
parent b85e0effd3
commit d0823576bf
1 changed files with 1 additions and 1 deletions
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mm/truncate.c
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@ -269,7 +269,7 @@ void truncate_inode_pages_range(struct address_space *mapping,
index = start;
continue;
}
if (pvec.pages[0]->index > end) {
if (index == start && pvec.pages[0]->index > end) {
pagevec_release(&pvec);
break;
}