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Commit 951c30d1 authored by Wu Fengguang's avatar Wu Fengguang Committed by Jens Axboe
Browse files

writeback: remove the always false bdi_cap_writeback_dirty() test 



This is dead code because no bdi flush thread will be started for
!bdi_cap_writeback_dirty bdi.

Signed-off-by: default avatarWu Fengguang <fengguang.wu@intel.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
parent bf7ec5bb

fs/fs-writeback.c

+0 −18
Original line number Diff line number Diff line
@@ -614,7 +614,6 @@ static void writeback_inodes_wb(struct bdi_writeback *wb, 
				struct writeback_control *wbc)

{

	struct super_block *sb = wbc->sb, *pin_sb = NULL;

	const int is_blkdev_sb = sb_is_blkdev_sb(sb);

	const unsigned long start = jiffies;	/* livelock avoidance */



	spin_lock(&inode_lock);
@@ -635,23 +634,6 @@ static void writeback_inodes_wb(struct bdi_writeback *wb, 
			continue;

		}



		if (!bdi_cap_writeback_dirty(wb->bdi)) {

			redirty_tail(inode);

			if (is_blkdev_sb) {

				/*

				 * Dirty memory-backed blockdev: the ramdisk

				 * driver does this.  Skip just this inode

				 */

				continue;

			}

			/*

			 * Dirty memory-backed inode against a filesystem other

			 * than the kernel-internal bdev filesystem.  Skip the

			 * entire superblock.

			 */

			break;

		}



		if (inode->i_state & (I_NEW | I_WILL_FREE)) {

			requeue_io(inode);

			continue;