[PATCH -next] gfs2: use kmem_cache_free() instead of kfree()

[Wei Yongjun <weiyongjun1@xxxxxxxxxx>]

memory allocated by kmem_cache_alloc() should be freed using
kmem_cache_free(), not kfree().

Fixes: 7d6eec37a105 ("gfs2: Allocate bufdata object before taking log lock")
Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Signed-off-by: Wei Yongjun <weiyongjun1@xxxxxxxxxx>
---
 fs/gfs2/trans.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/fs/gfs2/trans.c b/fs/gfs2/trans.c
index c50de22d7cbf..1b47d08ac4fb 100644
--- a/fs/gfs2/trans.c
+++ b/fs/gfs2/trans.c
@@ -206,7 +206,7 @@ void gfs2_trans_add_data(struct gfs2_glock *gl, struct buffer_head *bh)
 	}
 	gfs2_log_lock(sdp);
 	if (bh->b_private) {
-		kfree(bd);
+		kmem_cache_free(gfs2_bufdata_cachep, bd);
 		bd = bh->b_private;
 	} else {
 		bh->b_private = bd;
@@ -246,12 +246,12 @@ void gfs2_trans_add_meta(struct gfs2_glock *gl, struct buffer_head *bh)
 	}
 	gfs2_log_lock(sdp);
 	if (bh->b_private) {
-		kfree(bd);
+		kmem_cache_free(gfs2_bufdata_cachep, bd);
 		bd = bh->b_private;
 	} else {
 		lock_page(bh->b_page);
 		if (bh->b_private) {
-			kfree(bd);
+			kmem_cache_free(gfs2_bufdata_cachep, bd);
 			bd = bh->b_private;
 		} else {
 			bh->b_private = bd;