block: remove per-queue plugging

Code has been converted over to the new explicit on-stack plugging,
and delay users have been converted to use the new API for that.
So lets kill off the old plugging along with aops->sync_page().

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

1 files changed, 5 insertions, 8 deletions

diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c
index ac1c7e8378dd..4f8f53c4d42c 100644
--- a/fs/xfs/linux-2.6/xfs_buf.c
+++ b/fs/xfs/linux-2.6/xfs_buf.c
@@ -991,7 +991,7 @@ xfs_buf_lock(
         if (atomic_read(&bp->b_pin_count) && (bp->b_flags & XBF_STALE))
                 xfs_log_force(bp->b_target->bt_mount, 0);
         if (atomic_read(&bp->b_io_remaining))
-                blk_run_address_space(bp->b_target->bt_mapping);
+                blk_flush_plug(current);
         down(&bp->b_sema);
         XB_SET_OWNER(bp);
 
@@ -1035,9 +1035,7 @@ xfs_buf_wait_unpin(
                 set_current_state(TASK_UNINTERRUPTIBLE);
                 if (atomic_read(&bp->b_pin_count) == 0)
                         break;
-                if (atomic_read(&bp->b_io_remaining))
-                        blk_run_address_space(bp->b_target->bt_mapping);
-                schedule();
+                io_schedule();
         }
         remove_wait_queue(&bp->b_waiters, &wait);
         set_current_state(TASK_RUNNING);
@@ -1443,7 +1441,7 @@ xfs_buf_iowait(
         trace_xfs_buf_iowait(bp, _RET_IP_);
 
         if (atomic_read(&bp->b_io_remaining))
-                blk_run_address_space(bp->b_target->bt_mapping);
+                blk_flush_plug(current);
         wait_for_completion(&bp->b_iowait);
 
         trace_xfs_buf_iowait_done(bp, _RET_IP_);
@@ -1667,7 +1665,6 @@ xfs_mapping_buftarg(
         struct inode            *inode;
         struct address_space    *mapping;
         static const struct address_space_operations mapping_aops = {
-                .sync_page = block_sync_page,
                 .migratepage = fail_migrate_page,
         };
 
@@ -1948,7 +1945,7 @@ xfsbufd(
                         count++;
                 }
                 if (count)
-                        blk_run_address_space(target->bt_mapping);
+                        blk_flush_plug(current);
 
         } while (!kthread_should_stop());
 
@@ -1996,7 +1993,7 @@ xfs_flush_buftarg(
 
         if (wait) {
                 /* Expedite and wait for IO to complete. */
-                blk_run_address_space(target->bt_mapping);
+                blk_flush_plug(current);
                 while (!list_empty(&wait_list)) {
                         bp = list_first_entry(&wait_list, struct xfs_buf, b_list);