+++ /dev/null
-From fe18d649891d813964d3aaeebad873f281627fbc Mon Sep 17 00:00:00 2001
-From: Li Dongyang <dongyangli@ddn.com>
-Date: Sat, 15 Sep 2018 17:11:25 -0400
-Subject: [PATCH] ext4: don't mark mmp buffer head dirty
-
-Marking mmp bh dirty before writing it will make writeback
-pick up mmp block later and submit a write, we don't want the
-duplicate write as kmmpd thread should have full control of
-reading and writing the mmp block.
-Another reason is we will also have random I/O error on
-the writeback request when blk integrity is enabled, because
-kmmpd could modify the content of the mmp block(e.g. setting
-new seq and time) while the mmp block is under I/O requested
-by writeback.
-
-Signed-off-by: Li Dongyang <dongyangli@ddn.com>
-Signed-off-by: Theodore Ts'o <tytso@mit.edu>
-Reviewed-by: Andreas Dilger <adilger@dilger.ca>
-Cc: stable@vger.kernel.org
----
- fs/ext4/mmp.c | 1 -
- 1 file changed, 1 deletion(-)
-
-Index: linux-stage/fs/ext4/mmp.c
-===================================================================
---- linux-stage.orig/fs/ext4/mmp.c
-+++ linux-stage/fs/ext4/mmp.c
-@@ -12,7 +12,6 @@
- */
- static int write_mmp_block(struct buffer_head *bh)
- {
-- mark_buffer_dirty(bh);
- lock_buffer(bh);
- bh->b_end_io = end_buffer_write_sync;
- get_bh(bh);