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| author | Minchan Kim <minchan.kim@gmail.com> | 2011-03-22 16:32:40 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-22 17:44:02 -0700 |
| commit | 4c73b1bc6bb14aab7888ebe6bffe957cf7c07fa0 (patch) | |
| tree | 152bc82ac08f59cdec1d7d3d4312f90e8aea124a /mm | |
| parent | bd65cb86c98a79bc61afd0d80166005f125e9064 (diff) | |
| download | blackbird-op-linux-4c73b1bc6bb14aab7888ebe6bffe957cf7c07fa0.tar.gz blackbird-op-linux-4c73b1bc6bb14aab7888ebe6bffe957cf7c07fa0.zip | |
mm: shmem: change remove_from_page_cache
This patch series changes remove_from_page_cache()'s page ref counting
rule. Page cache ref count is decreased in delete_from_page_cache(). So
we don't need to decrease the page reference in callers.
Signed-off-by: Minchan Kim <minchan.kim@gmail.com>
Acked-by: Hugh Dickins <hughd@google.com>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/shmem.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/mm/shmem.c b/mm/shmem.c index 048a95a5244d..88593586bdb7 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -1081,7 +1081,7 @@ static int shmem_writepage(struct page *page, struct writeback_control *wbc) shmem_recalc_inode(inode); if (swap.val && add_to_swap_cache(page, swap, GFP_ATOMIC) == 0) { - remove_from_page_cache(page); + delete_from_page_cache(page); shmem_swp_set(info, entry, swap.val); shmem_swp_unmap(entry); if (list_empty(&info->swaplist)) @@ -1091,7 +1091,6 @@ static int shmem_writepage(struct page *page, struct writeback_control *wbc) spin_unlock(&info->lock); swap_shmem_alloc(swap); BUG_ON(page_mapped(page)); - page_cache_release(page); /* pagecache ref */ swap_writepage(page, wbc); if (inode) { mutex_lock(&shmem_swaplist_mutex); |
