The quilt patch titled
Subject: ocfs2: replace ll_rw_block()
has been removed from the -mm tree. Its filename was
ocfs2-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@xxxxxxxxxx>
Subject: ocfs2: replace ll_rw_block()
Date: Thu, 1 Sep 2022 21:34:59 +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 ocfs2.
Link: https://lkml.kernel.org/r/20220901133505.2510834-9-yi.zhang@xxxxxxxxxx
Signed-off-by: Zhang Yi <yi.zhang@xxxxxxxxxx>
Reviewed-by: Jan Kara <jack@xxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/ocfs2/aops.c | 2 +-
fs/ocfs2/super.c | 4 +---
2 files changed, 2 insertions(+), 4 deletions(-)
--- a/fs/ocfs2/aops.c~ocfs2-replace-ll_rw_block
+++ a/fs/ocfs2/aops.c
@@ -636,7 +636,7 @@ int ocfs2_map_page_blocks(struct page *p
!buffer_new(bh) &&
ocfs2_should_read_blk(inode, page, block_start) &&
(block_start < from || block_end > to)) {
- ll_rw_block(REQ_OP_READ, 1, &bh);
+ bh_read_nowait(bh, 0);
*wait_bh++=bh;
}
--- a/fs/ocfs2/super.c~ocfs2-replace-ll_rw_block
+++ a/fs/ocfs2/super.c
@@ -1764,9 +1764,7 @@ static int ocfs2_get_sector(struct super
if (!buffer_dirty(*bh))
clear_buffer_uptodate(*bh);
unlock_buffer(*bh);
- ll_rw_block(REQ_OP_READ, 1, bh);
- wait_on_buffer(*bh);
- if (!buffer_uptodate(*bh)) {
+ if (bh_read(*bh, 0) < 0) {
mlog_errno(-EIO);
brelse(*bh);
*bh = NULL;
_
Patches currently in -mm which might be from yi.zhang@xxxxxxxxxx are
