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authorWu Fengguang <fengguang.wu@intel.com>2009-06-16 15:31:21 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-16 19:47:28 -0700
commitfc31d16add13773265cc53d59f2e7594cb3c0a14 (patch)
treefe67988da0a8b7bd08cdf3da95c852373638e06b /mm/readahead.c
parentf7e839dd36fd940b0202cfb7d39b2a1b2dc59b1b (diff)
downloadlinux-fc31d16add13773265cc53d59f2e7594cb3c0a14.tar.gz
readahead: apply max_sane_readahead() limit in ondemand_readahead()
Just in case someone aggressively sets a huge readahead size. Cc: Nick Piggin <npiggin@suse.de> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Cc: Ying Han <yinghan@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/readahead.c')
-rw-r--r--mm/readahead.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/readahead.c b/mm/readahead.c
index a224182a3a6..bd0f0e88b0a 100644
--- a/mm/readahead.c
+++ b/mm/readahead.c
@@ -357,7 +357,7 @@ ondemand_readahead(struct address_space *mapping,
bool hit_readahead_marker, pgoff_t offset,
unsigned long req_size)
{
- int max = ra->ra_pages; /* max readahead pages */
+ unsigned long max = max_sane_readahead(ra->ra_pages);
pgoff_t prev_offset;
int sequential;