linux.git/fs/ceph/locks.c, branch v5.11

ceph: fix up some warnings on W=1 builds

2020-12-14T22:21:47+00:00

Convert some decodes into unused variables into skips, and fix up some
non-kerneldoc comment headers to not start with "/**".

Signed-off-by: Jeff Layton 
Signed-off-by: Ilya Dryomov

ceph: add ceph_sb_to_mdsc helper support to parse the mdsc

2020-10-12T13:29:26+00:00

This will help simplify the code.

[ jlayton: fix minor merge conflict in quota.c ]

Signed-off-by: Xiubo Li 
Signed-off-by: Jeff Layton 
Signed-off-by: Ilya Dryomov

ceph: check if file lock exists before sending unlock request

2020-03-30T10:42:40+00:00

When a process exits, kernel closes its files. locks_remove_file()
is called to remove file locks on these files. locks_remove_file()
tries unlocking files even there is no file lock.

Signed-off-by: "Yan, Zheng" 
Reviewed-by: Jeff Layton 
Signed-off-by: Ilya Dryomov

ceph: return -EIO if read/write against filp that lost file locks

2019-09-16T10:06:24+00:00

After mds evicts session, file locks get lost sliently. It's not safe to
let programs continue to do read/write.

Signed-off-by: "Yan, Zheng" 
Reviewed-by: Jeff Layton 
Signed-off-by: Ilya Dryomov

ceph: don't try fill file_lock on unsuccessful GETFILELOCK reply

2019-08-22T08:47:41+00:00

When ceph_mdsc_do_request returns an error, we can't assume that the
filelock_reply pointer will be set. Only try to fetch fields out of
the r_reply_info when it returns success.

Cc: stable@vger.kernel.org
Reported-by: Hector Martin 
Signed-off-by: Jeff Layton 
Reviewed-by: "Yan, Zheng" 
Signed-off-by: Ilya Dryomov

ceph: remove duplicated filelock ref increase

2019-05-07T17:22:36+00:00

Inode i_filelock_ref is increased in ceph_lock or ceph_flock, but it is
increased again in ceph_lock_message. This results in this ref won't
become zero. If CEPH_I_ERROR_FILELOCK flag is set in
remove_session_caps once, this flag can't be cleared even if client is
back to normal. So further file lock will return EIO.

Signed-off-by: Zhi Zhang 
Reviewed-by: "Yan, Zheng" 
Signed-off-by: Ilya Dryomov

ceph: add newline to end of debug message format

2018-04-02T08:12:44+00:00

Some of dout format do not include newline in the end,
fix for the files which are in fs/ceph and net/ceph directories,
and changing printk to dout for printing debug info in super.c

Signed-off-by: Chengguang Xu 
Reviewed-by: "Yan, Zheng" 
Signed-off-by: Ilya Dryomov

ceph: handle 'session get evicted while there are file locks'

2017-11-13T11:11:28+00:00

When session get evicted, all file locks associated with the session
get released remotely by mds. File locks tracked by kernel become
stale. In this situation, set an error flag on inode. The flag makes
further file locks return -EIO.

Another option to handle this situation is cleanup file locks tracked
kernel. I do not choose it because it is inconvenient to notify user
program about the error.

Signed-off-by: "Yan, Zheng" 
Acked-by: Jeff Layton 
Signed-off-by: Ilya Dryomov

ceph: optimize flock encoding during reconnect

2017-11-13T11:11:27+00:00

Don't malloc if there is no flock.

Signed-off-by: "Yan, Zheng" 
Reviewed-by: Jeff Layton 
Signed-off-by: Ilya Dryomov

ceph: make lock_to_ceph_filelock() static

2017-11-13T11:11:26+00:00

Signed-off-by: "Yan, Zheng" 
Reviewed-by: Jeff Layton 
Signed-off-by: Ilya Dryomov