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    Subject[PATCH 2/7] fuse: Change remove_from_page_cache
    Date
    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 decreasing page reference by caller.

    Cc: Miklos Szeredi <miklos@szeredi.hu>
    Cc: fuse-devel@lists.sourceforge.net
    Signed-off-by: Minchan Kim <minchan.kim@gmail.com>
    Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
    ---
    fs/fuse/dev.c | 3 +--
    1 files changed, 1 insertions(+), 2 deletions(-)

    diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
    index cf8d28d..1ef24fb 100644
    --- a/fs/fuse/dev.c
    +++ b/fs/fuse/dev.c
    @@ -737,8 +737,7 @@ static int fuse_try_move_page(struct fuse_copy_state *cs, struct page **pagep)
    if (WARN_ON(PageMlocked(oldpage)))
    goto out_fallback_unlock;

    - remove_from_page_cache(oldpage);
    - page_cache_release(oldpage);
    + delete_from_page_cache(oldpage);

    err = add_to_page_cache_locked(newpage, mapping, index, GFP_KERNEL);
    if (err) {
    --
    1.7.0.4


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