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Subject[PATCH] fs: Fix bug in gfs2_freeze_func that can cause deadlock
Date
Function gfs2_freeze_func causes a deadlock,because sd_freeze_mutex was
not released when return

Signed-off-by: Li Dong <lidong@vivo.com>
---
fs/gfs2/super.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c
--- a/fs/gfs2/super.c
+++ b/fs/gfs2/super.c
@@ -741,8 +741,10 @@ void gfs2_freeze_func(struct work_struct *work)
set_bit(SDF_FROZEN, &sdp->sd_flags);

error = gfs2_do_thaw(sdp);
- if (error)
+ if (error) {
+ mutex_unlock(&sdp->sd_freeze_mutex);
goto out;
+ }

clear_bit(SDF_FROZEN, &sdp->sd_flags);

--
2.31.1.windows.1
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