linux/fs/ceph
Yan, Zheng 0aa971b6fd ceph: don't skip updating wanted caps when cap is stale
1. try_get_cap_refs() fails to get caps and finds that mds_wanted
   does not include what it wants. It returns -ESTALE.
2. ceph_get_caps() calls ceph_renew_caps(). ceph_renew_caps() finds
   that inode has cap, so it calls ceph_check_caps().
3. ceph_check_caps() finds that issued caps (without checking if it's
   stale) already includes caps wanted by open file, so it skips
   updating wanted caps.

Above events can cause an infinite loop inside ceph_get_caps().

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2020-03-30 12:42:43 +02:00
..
acl.c ceph: remove unnecessary assignment in ceph_pre_init_acls() 2020-01-27 16:53:39 +01:00
addr.c ceph: switch to page_mkwrite_check_truncate in ceph_page_mkwrite 2020-03-30 12:42:41 +02:00
cache.c ceph: replace zero-length array with flexible-array member 2020-03-30 12:42:40 +02:00
cache.h libceph, rbd, ceph: convert to use the new mount API 2019-11-27 22:28:37 +01:00
caps.c ceph: don't skip updating wanted caps when cap is stale 2020-03-30 12:42:43 +02:00
ceph_frag.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
debugfs.c libceph: drop CEPH_DEFINE_SHOW_FUNC 2020-03-30 12:42:40 +02:00
dir.c ceph: consider inode's last read/write when calculating wanted caps 2020-03-30 12:42:42 +02:00
export.c ceph: return ceph_mdsc_do_request() errors from __get_parent() 2020-03-30 12:42:42 +02:00
file.c ceph: simplify calling of ceph_get_fmode() 2020-03-30 12:42:42 +02:00
inode.c ceph: check all mds' caps after page writeback 2020-03-30 12:42:42 +02:00
io.c ceph: add buffered/direct exclusionary locking for reads and writes 2019-09-16 12:06:25 +02:00
io.h ceph: add buffered/direct exclusionary locking for reads and writes 2019-09-16 12:06:25 +02:00
ioctl.c ceph: consider inode's last read/write when calculating wanted caps 2020-03-30 12:42:42 +02:00
ioctl.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kconfig ceph: add selinux support 2019-07-08 14:01:42 +02:00
locks.c ceph: check if file lock exists before sending unlock request 2020-03-30 12:42:40 +02:00
Makefile ceph: move net/ceph/ceph_fs.c to fs/ceph/util.c 2020-01-27 16:53:40 +01:00
mds_client.c ceph: consider inode's last read/write when calculating wanted caps 2020-03-30 12:42:42 +02:00
mds_client.h ceph: add new MDS req field to hold delegated inode number 2020-03-30 12:42:42 +02:00
mdsmap.c ceph: add possible_max_rank and make the code more readable 2020-01-27 16:53:40 +01:00
quota.c ceph: fix infinite loop in get_quota_realm() 2019-07-08 14:01:42 +02:00
snap.c ceph: fix memory leak in ceph_cleanup_snapid_map() 2020-03-23 13:07:08 +01:00
strings.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
super.c ceph: perform asynchronous unlink if we have sufficient caps 2020-03-30 12:42:42 +02:00
super.h ceph: simplify calling of ceph_get_fmode() 2020-03-30 12:42:42 +02:00
util.c ceph: move net/ceph/ceph_fs.c to fs/ceph/util.c 2020-01-27 16:53:40 +01:00
xattr.c ceph: print name of xattr in __ceph_{get,set}xattr() douts 2020-01-27 16:53:40 +01:00