linux.git/fs/ceph/super.c, branch v3.19

ceph: support inline data feature

2014-12-17T17:09:53+00:00

Signed-off-by: Yan, Zheng

ceph: remove unused stringification macros

2014-12-17T17:09:51+00:00

These were used to report git versions a long time ago.

Signed-off-by: Ilya Dryomov

ceph: introduce global empty snap context

2014-12-17T17:09:51+00:00

Current snaphost code does not properly handle moving inode from one
empty snap realm to another empty snap realm. After changing inode's
snap realm, some dirty pages' snap context can be not equal to inode's
i_head_snap. This can trigger BUG() in ceph_put_wrbuffer_cap_refs()

The fix is introduce a global empty snap context for all empty snap
realm. This avoids triggering the BUG() for filesystem with no snapshot.

Fixes: http://tracker.ceph.com/issues/9928

Signed-off-by: Yan, Zheng 
Reviewed-by: Ilya Dryomov

dcache: d_obtain_alias callers don't all want DISCONNECTED

2014-08-07T18:40:10+00:00

There are a few d_obtain_alias callers that are using it to get the
root of a filesystem which may already have an alias somewhere else.

This is not the same as the filehandle-lookup case, and none of them
actually need DCACHE_DISCONNECTED set.

It isn't really a serious problem, but it would really be clearer if we
reserved DCACHE_DISCONNECTED for those cases where it's actually needed.

In the btrfs case this was causing a spurious printk from
nfsd/nfsfh.c:fh_verify when it found an unexpected DCACHE_DISCONNECTED
dentry.  Josef worked around this by unsetting DCACHE_DISCONNECTED
manually in 3a0dfa6a12e "Btrfs: unset DCACHE_DISCONNECTED when mounting
default subvol", and this replaces that workaround.

Cc: Josef Bacik 
Signed-off-by: J. Bruce Fields 
Signed-off-by: Al Viro

ceph: use fl->fl_file as owner identifier of flock and posix lock

2014-04-05T04:07:11+00:00

flock and posix lock should use fl->fl_file instead of process ID
as owner identifier. (posix lock uses fl->fl_owner. fl->fl_owner
is usually equal to fl->fl_file, but it also can be a customized
value). The process ID of who holds the lock is just for F_GETLK
fcntl(2).

The fix is rename the 'pid' fields of struct ceph_mds_request_args
and struct ceph_filelock to 'owner', rename 'pid_namespace' fields
to 'pid'. Assign fl->fl_file to the 'owner' field of lock messages.
We also set the most significant bit of the 'owner' field. MDS can
use that bit to distinguish between old and new clients.

The MDS counterpart of this patch modifies the flock code to not
take the 'pid_namespace' into consideration when checking conflict
locks.

Signed-off-by: Yan, Zheng 
Reviewed-by: Sage Weil

ceph: add acl, noacl options for cephfs mount

2014-02-17T20:37:12+00:00

Make the 'acl' option dependent on having ACL support compiled in.  Make
the 'noacl' option work even without it so that one can always ask it to
be off and not error out on mount when it is not supported.

Signed-off-by: Guangliang Zhao 
Signed-off-by: Sage Weil

libceph: all features fields must be u64

2013-12-31T18:32:08+00:00

In preparation for ceph_features.h update, change all features fields
from unsigned int/u32 to u64.  (ceph.git has ~40 feature bits at this
point.)

Signed-off-by: Ilya Dryomov 
Reviewed-by: Sage Weil

ceph: add acl for cephfs

2013-12-31T18:32:01+00:00

Signed-off-by: Guangliang Zhao 
Reviewed-by: Li Wang 
Reviewed-by: Zheng Yan

ceph: drop unconnected inodes

2013-12-13T17:13:16+00:00

Positve dentry and corresponding inode are always accompanied in MDS reply.
So no need to keep inode in the cache after dropping all its aliases.

Signed-off-by: Yan, Zheng 
Reviewed-by: Sage Weil

ceph: use fscache as a local presisent cache

2013-09-06T16:50:11+00:00

Adding support for fscache to the Ceph filesystem. This would bring it to on
par with some of the other network filesystems in Linux (like NFS, AFS, etc...)

In order to mount the filesystem with fscache the 'fsc' mount option must be
passed.

Signed-off-by: Milosz Tanski 
Signed-off-by: Sage Weil