ext4: do not send discards as barriers

ext4 already uses synchronous discards, no need to add I/O barriers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index df44b345f662..a22bfef3da95 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -2567,7 +2567,7 @@ static inline void ext4_issue_discard(struct super_block *sb,
         trace_ext4_discard_blocks(sb,
                         (unsigned long long) discard_block, count);
         ret = sb_issue_discard(sb, discard_block, count, GFP_NOFS,
-                               BLKDEV_IFL_WAIT | BLKDEV_IFL_BARRIER);
+                               BLKDEV_IFL_WAIT);
         if (ret == EOPNOTSUPP) {
                 ext4_warning(sb, "discard not supported, disabling");
                 clear_opt(EXT4_SB(sb)->s_mount_opt, DISCARD);