From 173e70e8ac0f1e7e3eb98f1ffb953e80a5cc8a5f Mon Sep 17 00:00:00 2001 From: "Yan, Zheng" Date: Tue, 18 Feb 2020 08:17:08 -0500 Subject: ceph: don't take refs to want mask unless we have all bits If we don't have all of the cap bits for the want mask in try_get_cap_refs, then just take refs on the need bits. Signed-off-by: "Yan, Zheng" Reviewed-by: Jeff Layton Signed-off-by: Ilya Dryomov --- fs/ceph/caps.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'fs/ceph') diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c index d3274120f738..d09b9d91cf4f 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -2666,7 +2666,10 @@ again: } snap_rwsem_locked = true; } - *got = need | (have & want); + if ((have & want) == want) + *got = need | want; + else + *got = need; if (S_ISREG(inode->i_mode) && (need & CEPH_CAP_FILE_RD) && !(*got & CEPH_CAP_FILE_CACHE)) -- cgit v1.2.3