This is a note to let you know that I've just added the patch titled
ext4: get block from bh in ext4_free_blocks for fast commit replay
to the 6.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ext4-get-block-from-bh-in-ext4_free_blocks-for-fast-commit-replay.patch
and it can be found in the queue-6.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 11b6890be0084ad4df0e06d89a9fdcc948472c65 Mon Sep 17 00:00:00 2001
From: Kemeng Shi <shikemeng@xxxxxxxxxxxxxxx>
Date: Sat, 3 Jun 2023 23:03:16 +0800
Subject: ext4: get block from bh in ext4_free_blocks for fast commit replay
From: Kemeng Shi <shikemeng@xxxxxxxxxxxxxxx>
commit 11b6890be0084ad4df0e06d89a9fdcc948472c65 upstream.
ext4_free_blocks will retrieve block from bh if block parameter is zero.
Retrieve block before ext4_free_blocks_simple to avoid potentially
passing wrong block to ext4_free_blocks_simple.
Signed-off-by: Kemeng Shi <shikemeng@xxxxxxxxxxxxxxx>
Cc: stable@xxxxxxxxxx
Reviewed-by: Ojaswin Mujoo <ojaswin@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230603150327.3596033-9-shikemeng@xxxxxxxxxxxxxxx
Signed-off-by: Theodore Ts'o <tytso@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/ext4/mballoc.c | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -6328,12 +6328,6 @@ void ext4_free_blocks(handle_t *handle,
sbi = EXT4_SB(sb);
- if (sbi->s_mount_state & EXT4_FC_REPLAY) {
- ext4_free_blocks_simple(inode, block, count);
- return;
- }
-
- might_sleep();
if (bh) {
if (block)
BUG_ON(block != bh->b_blocknr);
@@ -6341,6 +6335,13 @@ void ext4_free_blocks(handle_t *handle,
block = bh->b_blocknr;
}
+ if (sbi->s_mount_state & EXT4_FC_REPLAY) {
+ ext4_free_blocks_simple(inode, block, count);
+ return;
+ }
+
+ might_sleep();
+
if (!(flags & EXT4_FREE_BLOCKS_VALIDATED) &&
!ext4_inode_block_valid(inode, block, count)) {
ext4_error(sb, "Freeing blocks not in datazone - "
Patches currently in stable-queue which might be from shikemeng@xxxxxxxxxxxxxxx are
queue-6.4/ext4-fix-wrong-unit-use-in-ext4_mb_new_blocks.patch
queue-6.4/ext4-fix-wrong-unit-use-in-ext4_mb_clear_bb.patch
queue-6.4/ext4-get-block-from-bh-in-ext4_free_blocks-for-fast-commit-replay.patch
