From: Dinghao Liu dinghao.liu@zju.edu.cn
[ Upstream commit 751341b4d7841e2b76e78eec382c2e119165497f ]
When dbBackSplit() fails, mp should be released to prevent memleak. It's the same when dbJoin() fails.
Signed-off-by: Dinghao Liu dinghao.liu@zju.edu.cn Signed-off-by: Dave Kleikamp dave.kleikamp@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/jfs/jfs_dmap.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/fs/jfs/jfs_dmap.c b/fs/jfs/jfs_dmap.c index 7dfcab2a2da68..619deeeb3d8b4 100644 --- a/fs/jfs/jfs_dmap.c +++ b/fs/jfs/jfs_dmap.c @@ -2549,15 +2549,19 @@ dbAdjCtl(struct bmap * bmp, s64 blkno, int newval, int alloc, int level) */ if (oldval == NOFREE) { rc = dbBackSplit((dmtree_t *) dcp, leafno); - if (rc) + if (rc) { + release_metapage(mp); return rc; + } oldval = dcp->stree[ti]; } dbSplit((dmtree_t *) dcp, leafno, dcp->budmin, newval); } else { rc = dbJoin((dmtree_t *) dcp, leafno, newval); - if (rc) + if (rc) { + release_metapage(mp); return rc; + } }
/* check if the root of the current dmap control page changed due