fs: make fsync_buffers_list() plug
It used WRITE_SYNC_PLUG before and potentially submits a batch
of IO, so lets enable plugging for this case.
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
diff --git a/fs/buffer.c b/fs/buffer.c
index 42534f6..2e6b1a3 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -743,8 +743,10 @@
struct list_head tmp;
struct address_space *mapping;
int err = 0, err2;
+ struct blk_plug plug;
INIT_LIST_HEAD(&tmp);
+ blk_start_plug(&plug);
spin_lock(lock);
while (!list_empty(list)) {
@@ -781,6 +783,10 @@
}
}
+ spin_unlock(lock);
+ blk_finish_plug(&plug);
+ spin_lock(lock);
+
while (!list_empty(&tmp)) {
bh = BH_ENTRY(tmp.prev);
get_bh(bh);