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-rw-r--r--fs/gfs2/lops.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c
index 4295a6a0f1e4..e919abf25ecd 100644
--- a/fs/gfs2/lops.c
+++ b/fs/gfs2/lops.c
@@ -51,8 +51,10 @@ static void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh)
/* If this buffer is in the AIL and it has already been written
* to in-place disk block, remove it from the AIL.
*/
+ spin_lock(&sdp->sd_ail_lock);
if (bd->bd_ail)
list_move(&bd->bd_ail_st_list, &bd->bd_ail->ai_ail2_list);
+ spin_unlock(&sdp->sd_ail_lock);
get_bh(bh);
atomic_inc(&sdp->sd_log_pinned);
trace_gfs2_pin(bd, 1);