[merged mm-stable] ufs-replace-ll_rw_block.patch removed from -mm tree

[merged mm-stable] ufs-replace-ll_rw_block.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: ufs: replace ll_rw_block()
has been removed from the -mm tree.  Its filename was
     ufs-replace-ll_rw_block.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Zhang Yi <yi.zhang@huawei.com>
Subject: ufs: replace ll_rw_block()
Date: Thu, 1 Sep 2022 21:35:02 +0800

ll_rw_block() is not safe for the sync read path because it cannot
guarantee that submitting read IO if the buffer has been locked. We
could get false positive EIO after wait_on_buffer() if the buffer has
been locked by others. So stop using ll_rw_block() in ufs.

Link: https://lkml.kernel.org/r/20220901133505.2510834-12-yi.zhang@huawei.com
Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/ufs/balloc.c |   12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

--- a/fs/ufs/balloc.c~ufs-replace-ll_rw_block
+++ a/fs/ufs/balloc.c
@@ -295,14 +295,10 @@ static void ufs_change_blocknr(struct in
 
 			if (!buffer_mapped(bh))
 					map_bh(bh, inode->i_sb, oldb + pos);
-			if (!buffer_uptodate(bh)) {
-				ll_rw_block(REQ_OP_READ, 1, &bh);
-				wait_on_buffer(bh);
-				if (!buffer_uptodate(bh)) {
-					ufs_error(inode->i_sb, __func__,
-						  "read of block failed\n");
-					break;
-				}
+			if (bh_read(bh, 0) < 0) {
+				ufs_error(inode->i_sb, __func__,
+					  "read of block failed\n");
+				break;
 			}
 
 			UFSD(" change from %llu to %llu, pos %u\n",
_

Patches currently in -mm which might be from yi.zhang@huawei.com are