fs: make mpage read/write_pages() plug

Signed-off-by: Jens Axboe <jaxboe@fusionio.com>

diff --git a/fs/mpage.c b/fs/mpage.c
index d78455a81ec979a734f28d7874b6654e5a087e7e..0afc809e46e09b53cb767e56795fba3139c4b181 100644 (file)
--- a/fs/mpage.c
+++ b/fs/mpage.c
@@ -364,6 +364,9 @@ mpage_readpages(struct address_space *mapping, struct list_head *pages,
        sector_t last_block_in_bio = 0;
        struct buffer_head map_bh;
        unsigned long first_logical_block = 0;
+       struct blk_plug plug;
+
+       blk_start_plug(&plug);
 
        map_bh.b_state = 0;
        map_bh.b_size = 0;
@@ -385,6 +388,7 @@ mpage_readpages(struct address_space *mapping, struct list_head *pages,
        BUG_ON(!list_empty(pages));
        if (bio)
                mpage_bio_submit(READ, bio);
+       blk_finish_plug(&plug);
        return 0;
 }
 EXPORT_SYMBOL(mpage_readpages);
@@ -666,8 +670,11 @@ int
 mpage_writepages(struct address_space *mapping,
                struct writeback_control *wbc, get_block_t get_block)
 {
+       struct blk_plug plug;
        int ret;
 
+       blk_start_plug(&plug);
+
        if (!get_block)
                ret = generic_writepages(mapping, wbc);
        else {
@@ -682,6 +689,7 @@ mpage_writepages(struct address_space *mapping,
                if (mpd.bio)
                        mpage_bio_submit(WRITE, mpd.bio);
        }
+       blk_finish_plug(&plug);
        return ret;
 }
 EXPORT_SYMBOL(mpage_writepages);