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readahead: apply max_sane_readahead() limit in ondemand_readahead()

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Just in case someone aggressively sets a huge readahead size.

Cc: Nick Piggin <[email protected]>
Signed-off-by: Wu Fengguang <[email protected]>
Cc: Ying Han <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Wu Fengguang 2009-06-16 15:31:21 -07:00 • committed by Linus Torvalds
commit fc31d16add
1 changed files with 1 additions and 1 deletions
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2
mm/readahead.c
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@ -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;