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Commit 1f08529c authored by Al Viro's avatar Al Viro Committed by Ilya Dryomov
Browse files

ceph: add missing check in d_revalidate snapdir handling 



We should not play with dcache without parent locked...

Cc: stable@vger.kernel.org
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: default avatarJeff Layton <jlayton@kernel.org>
Signed-off-by: default avatarIlya Dryomov <idryomov@gmail.com>
parent aa8dd816

fs/ceph/inode.c

+1 −0
Original line number Original line Diff line number Diff line
@@ -1434,6 +1434,7 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req) 
		dout(" final dn %p\n", dn);

		dout(" final dn %p\n", dn);

	} else if ((req->r_op == CEPH_MDS_OP_LOOKUPSNAP ||

	} else if ((req->r_op == CEPH_MDS_OP_LOOKUPSNAP ||

		    req->r_op == CEPH_MDS_OP_MKSNAP) &&

		    req->r_op == CEPH_MDS_OP_MKSNAP) &&

	           test_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags) &&

		   !test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags)) {

		   !test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags)) {

		struct inode *dir = req->r_parent;

		struct inode *dir = req->r_parent;