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Subject[PATCH 1/1] mm/readahead.c: remove unused file_ra_state from count_history_pages
Date
count_history_pages does only call page_cache_prev_hole in rcu_lock
context using address_space mapping. There's no need to have file_ra_state
here.

Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Fabian Frederick <fabf@skynet.be>
---
mm/readahead.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/mm/readahead.c b/mm/readahead.c
index 0ca36a7..17b9172 100644
--- a/mm/readahead.c
+++ b/mm/readahead.c
@@ -326,7 +326,6 @@ static unsigned long get_next_ra_size(struct file_ra_state *ra,
* - thrashing threshold in memory tight systems
*/
static pgoff_t count_history_pages(struct address_space *mapping,
- struct file_ra_state *ra,
pgoff_t offset, unsigned long max)
{
pgoff_t head;
@@ -349,7 +348,7 @@ static int try_context_readahead(struct address_space *mapping,
{
pgoff_t size;

- size = count_history_pages(mapping, ra, offset, max);
+ size = count_history_pages(mapping, offset, max);

/*
* not enough history pages:
--
1.8.4.5


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