linux-toradex.git/fs/ceph/super.c, branch v4.10

Merge tag 'ceph-for-4.10-rc1' of git://github.com/ceph/ceph-client

2016-12-16T19:23:34+00:00

Pull ceph updates from Ilya Dryomov:
 "A varied set of changes:

   - a large rework of cephx auth code to cope with CONFIG_VMAP_STACK
     (myself). Also fixed a deadlock caused by a bogus allocation on the
     writeback path and authorize reply verification.

   - a fix for long stalls during fsync (Jeff Layton). The client now
     has a way to force the MDS log flush, leading to ~100x speedups in
     some synthetic tests.

   - a new [no]require_active_mds mount option (Zheng Yan).

     On mount, we will now check whether any of the MDSes are available
     and bail rather than block if none are. This check can be avoided
     by specifying the "no" option.

   - a couple of MDS cap handling fixes and a few assorted patches
     throughout"

* tag 'ceph-for-4.10-rc1' of git://github.com/ceph/ceph-client: (32 commits)
  libceph: remove now unused finish_request() wrapper
  libceph: always signal completion when done
  ceph: avoid creating orphan object when checking pool permission
  ceph: properly set issue_seq for cap release
  ceph: add flags parameter to send_cap_msg
  ceph: update cap message struct version to 10
  ceph: define new argument structure for send_cap_msg
  ceph: move xattr initialzation before the encoding past the ceph_mds_caps
  ceph: fix minor typo in unsafe_request_wait
  ceph: record truncate size/seq for snap data writeback
  ceph: check availability of mds cluster on mount
  ceph: fix splice read for no Fc capability case
  ceph: try getting buffer capability for readahead/fadvise
  ceph: fix scheduler warning due to nested blocking
  ceph: fix printing wrong return variable in ceph_direct_read_write()
  crush: include mapper.h in mapper.c
  rbd: silence bogus -Wmaybe-uninitialized warning
  libceph: no need to drop con->mutex for ->get_authorizer()
  libceph: drop len argument of *verify_authorizer_reply()
  libceph: verify authorize reply on connect
  ...

Merge branches 'work.namei', 'work.dcache' and 'work.iov_iter' into for-linus

2016-12-15T06:07:29+00:00

ceph: check availability of mds cluster on mount

2016-12-12T22:54:27+00:00

Signed-off-by: Yan, Zheng

ceph: switch to use of ->d_init()

2016-10-29T02:05:13+00:00

Signed-off-by: Al Viro

ceph: unify dentry_operations instances

2016-10-29T01:52:50+00:00

Signed-off-by: Al Viro

ceph: fix uninitialized dentry pointer in ceph_real_mount()

2016-10-18T10:10:59+00:00

    fs/ceph/super.c: In function ‘ceph_real_mount’:
    fs/ceph/super.c:818: warning: ‘root’ may be used uninitialized in this function

If s_root is already valid, dentry pointer root is never initialized,
and returned by ceph_real_mount(). This will cause a crash later when
the caller dereferences the pointer.

Fixes: ce2728aaa82bbeba ("ceph: avoid accessing / when mounting a subpath")
Signed-off-by: Geert Uytterhoeven 
Signed-off-by: Yan, Zheng

ceph: avoid accessing / when mounting a subpath

2016-10-03T14:13:50+00:00

Accessing / causes failuire if the client has caps that restrict path

Signed-off-by: Yan, Zheng

ceph: Mark the file cache as unreclaimable

2016-07-28T01:00:45+00:00

Ceph creates multiple caches with the SLAB_RECLAIMABLE flag set, so
that it can satisfy its internal needs. Inspecting the code shows that
most of the caches are indeed reclaimable since they are directly
related to the generic inode/dentry shrinkers. However, one of the
cache used to satisfy struct file is not reclaimable since its
entries are freed only when the last reference to the file is
dropped. If a heavily loaded node opens a lot of files it can
introduce non-trivial discrepancies between memory shown as reclaimable
and what is actually reclaimed when drop_caches is used.

Fix this by removing the reclaimable flag for the file's cache.

Signed-off-by: Nikolay Borisov 
Signed-off-by: Yan, Zheng

ceph: mount non-default filesystem by name

2016-07-28T01:00:40+00:00

To mount non-default filesytem, user currently needs to provide mds
namespace ID. This is inconvenience.

This patch makes user be able to mount filesystem by name. If user
wants to mount non-default filesystem. Client first subscribes to
fsmap.user. Subscribe to mdsmap. after getting ID of filesystem.

Signed-off-by: Yan, Zheng

ceph: wait unsafe sync writes for evicting inode

2016-07-28T00:55:40+00:00

Otherwise ceph_sync_write_unsafe() may access/modify freed inode.

Signed-off-by: Yan, Zheng