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| author | Jeff Layton <jlayton@kernel.org> | 2021-09-02 12:47:01 -0400 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2021-11-08 03:29:51 +0100 |
| commit | 3c3050267e3c9a230f23a5621d7c6bd084d15094 (patch) | |
| tree | 59d272dacf493f6fc83e9e1e37791c0dff5bd19e /fs/ceph | |
| parent | c35cac610a24f8b2e2d6f6535b7300d3bb2e5c29 (diff) | |
| download | linux-3c3050267e3c9a230f23a5621d7c6bd084d15094.tar.gz linux-3c3050267e3c9a230f23a5621d7c6bd084d15094.tar.bz2 linux-3c3050267e3c9a230f23a5621d7c6bd084d15094.zip | |
ceph: fix auth cap handling logic in remove_session_caps_cb
The existing logic relies on ci->i_auth_cap being NULL, but if we end up
removing the auth cap early, then we'll do a lot of useless work and
lock-taking on the remaining caps. Ensure that we only do the auth cap
removal when we're _actually_ removing the auth cap.
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/ceph')
| -rw-r--r-- | fs/ceph/mds_client.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index 9967824ad9c3..3239e6c9047f 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -1619,6 +1619,7 @@ static int remove_session_caps_cb(struct inode *inode, struct ceph_cap *cap, struct ceph_fs_client *fsc = (struct ceph_fs_client *)arg; struct ceph_mds_client *mdsc = fsc->mdsc; struct ceph_inode_info *ci = ceph_inode(inode); + bool is_auth; bool dirty_dropped = false; bool invalidate = false; int capsnap_release = 0; @@ -1626,8 +1627,9 @@ static int remove_session_caps_cb(struct inode *inode, struct ceph_cap *cap, dout("removing cap %p, ci is %p, inode is %p\n", cap, ci, &ci->vfs_inode); spin_lock(&ci->i_ceph_lock); + is_auth = (cap == ci->i_auth_cap); __ceph_remove_cap(cap, false); - if (!ci->i_auth_cap) { + if (is_auth) { struct ceph_cap_flush *cf; if (READ_ONCE(fsc->mount_state) >= CEPH_MOUNT_SHUTDOWN) { |