linux.git/fs/ceph, branch v5.4-rc2

Merge tag 'ceph-for-5.4-rc1' of git://github.com/ceph/ceph-client

2019-09-25T17:21:13+00:00

Pull ceph updates from Ilya Dryomov:
 "The highlights are:

   - automatic recovery of a blacklisted filesystem session (Zheng Yan).
     This is disabled by default and can be enabled by mounting with the
     new "recover_session=clean" option.

   - serialize buffered reads and O_DIRECT writes (Jeff Layton). Care is
     taken to avoid serializing O_DIRECT reads and writes with each
     other, this is based on the exclusion scheme from NFS.

   - handle large osdmaps better in the face of fragmented memory
     (myself)

   - don't limit what security.* xattrs can be get or set (Jeff Layton).
     We were overly restrictive here, unnecessarily preventing things
     like file capability sets stored in security.capability from
     working.

   - allow copy_file_range() within the same inode and across different
     filesystems within the same cluster (Luis Henriques)"

* tag 'ceph-for-5.4-rc1' of git://github.com/ceph/ceph-client: (41 commits)
  ceph: call ceph_mdsc_destroy from destroy_fs_client
  libceph: use ceph_kvmalloc() for osdmap arrays
  libceph: avoid a __vmalloc() deadlock in ceph_kvmalloc()
  ceph: allow object copies across different filesystems in the same cluster
  ceph: include ceph_debug.h in cache.c
  ceph: move static keyword to the front of declarations
  rbd: pull rbd_img_request_create() dout out into the callers
  ceph: reconnect connection if session hang in opening state
  libceph: drop unused con parameter of calc_target()
  ceph: use release_pages() directly
  rbd: fix response length parameter for encoded strings
  ceph: allow arbitrary security.* xattrs
  ceph: only set CEPH_I_SEC_INITED if we got a MAC label
  ceph: turn ceph_security_invalidate_secctx into static inline
  ceph: add buffered/direct exclusionary locking for reads and writes
  libceph: handle OSD op ceph_pagelist_append() errors
  ceph: don't return a value from void function
  ceph: don't freeze during write page faults
  ceph: update the mtime when truncating up
  ceph: fix indentation in __get_snap_name()
  ...

ceph: call ceph_mdsc_destroy from destroy_fs_client

2019-09-16T10:06:25+00:00

They're always called in succession.

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

ceph: allow object copies across different filesystems in the same cluster

2019-09-16T10:06:25+00:00

OSDs are able to perform object copies across different pools.  Thus,
there's no need to prevent copy_file_range from doing remote copies if the
source and destination superblocks are different.  Only return -EXDEV if
they have different fsid (the cluster ID).

Signed-off-by: Luis Henriques 
Reviewed-by: Jeff Layton 
Signed-off-by: Ilya Dryomov

ceph: include ceph_debug.h in cache.c

2019-09-16T10:06:25+00:00

Any file that uses dout() should include ceph_debug.h at the top.

Signed-off-by: Ilya Dryomov

ceph: move static keyword to the front of declarations

2019-09-16T10:06:25+00:00

Move the static keyword to the front of declarations of
snap_handle_length, handle_length and connected_handle_length,
and resolve the following compiler warnings that can be seen
when building with warnings enabled (W=1):

fs/ceph/export.c:38:2: warning:
  ‘static’ is not at beginning of declaration [-Wold-style-declaration]

fs/ceph/export.c:88:2: warning:
  ‘static’ is not at beginning of declaration [-Wold-style-declaration]

fs/ceph/export.c:90:2: warning:
  ‘static’ is not at beginning of declaration [-Wold-style-declaration]

Signed-off-by: Krzysztof Wilczynski 
Signed-off-by: Ilya Dryomov

ceph: reconnect connection if session hang in opening state

2019-09-16T10:06:25+00:00

If client mds session is evicted in CEPH_MDS_SESSION_OPENING state,
mds won't send session msg to client, and delayed_work skip
CEPH_MDS_SESSION_OPENING state session, the session hang forever.

Allow ceph_con_keepalive to reconnect a session in OPENING to avoid
session hang. Also, ensure that we skip sessions in RESTARTING and
REJECTED states since those states can't be resurrected by issuing
a keepalive.

Link: https://tracker.ceph.com/issues/41551
Signed-off-by: Erqi Chen chenerqi@gmail.com
Reviewed-by: "Yan, Zheng" 
Signed-off-by: Jeff Layton 
Signed-off-by: Ilya Dryomov

ceph: use release_pages() directly

2019-09-16T10:06:25+00:00

release_pages() has been available to modules since Oct, 2010,
when commit 0be8557bcd34 ("fuse: use release_pages()") added
EXPORT_SYMBOL(release_pages). However, this ceph code was still
using a workaround.

Remove the workaround, and call release_pages() directly.

Signed-off-by: John Hubbard 
Reviewed-by: Jeff Layton 
Signed-off-by: Ilya Dryomov

ceph: allow arbitrary security.* xattrs

2019-09-16T10:06:25+00:00

Most filesystems don't limit what security.* xattrs can be set or
fetched. I see no reason that we need to limit that on cephfs either.

Drop the special xattr handler for "security." xattrs, and allow the
"other" xattr handler to handle security xattrs as well.

In addition to fixing xfstest generic/093, this allows us to support
per-file capabilities (a'la setcap(8)).

Link: https://tracker.ceph.com/issues/41135
Signed-off-by: Jeff Layton 
Signed-off-by: Ilya Dryomov

ceph: only set CEPH_I_SEC_INITED if we got a MAC label

2019-09-16T10:06:25+00:00

__ceph_getxattr will set the CEPH_I_SEC_INITED flag whenever it gets
any xattr that starts with "security.". We only want to set that flag
when fetching the MAC label for the currently-active LSM, however.

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

ceph: turn ceph_security_invalidate_secctx into static inline

2019-09-16T10:06:25+00:00

No need to do an extra jump here. Also add some comments on the endifs.

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