The patch titled
Subject: nilfs2: Fix nilfs_sufile_mark_dirty() not set segment usage as dirty
has been added to the -mm mm-nonmm-unstable branch. Its filename is
nilfs2-fix-nilfs_sufile_mark_dirty-not-set-segment-usage-as-dirty-v3.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/nilfs2-fix-nilfs_sufile_mark_dirty-not-set-segment-usage-as-dirty-v3.patch
This patch will later appear in the mm-nonmm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Chen Zhongjin <chenzhongjin@xxxxxxxxxx>
Subject: nilfs2: Fix nilfs_sufile_mark_dirty() not set segment usage as dirty
Date: Mon, 21 Nov 2022 17:11:41 +0800
add lock protection per Ryusuke
Link: https://lkml.kernel.org/r/20221121091141.214703-1-chenzhongjin@xxxxxxxxxx
Fixes: 9ff05123e3bf ("nilfs2: segment constructor")
Cc: stable@xxxxxxxxxxxxxxx
Reported-by: syzbot+77e4f005cb899d4268d1@xxxxxxxxxxxxxxxxxxxxxxxxx
Reported-by: Liu Shixin <liushixin2@xxxxxxxxxx>
Signed-off-by: Chen Zhongjin <chenzhongjin@xxxxxxxxxx>
Acked-by: Ryusuke Konishi <konishi.ryusuke@xxxxxxxxx>
Tested-by: Ryusuke Konishi <konishi.ryusuke@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/nilfs2/sufile.c | 2 ++
1 file changed, 2 insertions(+)
--- a/fs/nilfs2/sufile.c~nilfs2-fix-nilfs_sufile_mark_dirty-not-set-segment-usage-as-dirty-v3
+++ a/fs/nilfs2/sufile.c
@@ -499,6 +499,7 @@ int nilfs_sufile_mark_dirty(struct inode
struct nilfs_segment_usage *su;
int ret;
+ down_write(&NILFS_MDT(sufile)->mi_sem);
ret = nilfs_sufile_get_segment_usage_block(sufile, segnum, 0, &bh);
if (!ret) {
mark_buffer_dirty(bh);
@@ -509,6 +510,7 @@ int nilfs_sufile_mark_dirty(struct inode
kunmap_atomic(kaddr);
brelse(bh);
}
+ up_write(&NILFS_MDT(sufile)->mi_sem);
return ret;
}
_
Patches currently in -mm which might be from chenzhongjin@xxxxxxxxxx are
nilfs2-fix-nilfs_sufile_mark_dirty-not-set-segment-usage-as-dirty.patch
nilfs2-fix-nilfs_sufile_mark_dirty-not-set-segment-usage-as-dirty-v3.patch
