linux.git/fs/ceph/export.c, branch v3.6

ceph: move encode_fh to new API

2012-05-30T03:28:33+00:00

Use parent_inode has a flag for whether nfsd wants a connectable fh, but
generate one opportunistically so that we can take advantage of the
additional info in there.

Signed-off-by: Sage Weil 
Signed-off-by: Al Viro

->encode_fh() API change

2012-05-30T03:28:33+00:00

pass inode + parent's inode or NULL instead of dentry + bool saying
whether we want the parent or not.

NOTE: that needs ceph fix folded in.

Signed-off-by: Al Viro

ceph: avoid useless dget/dput in encode_fh

2012-01-10T16:57:00+00:00

Nothing we do here sleeps, so just do it under d_lock and avoid the dget/
dput entirely.

Reported-by: Al Viro 
Signed-off-by: Sage Weil

ceph: avoid d_parent in ceph_dentry_hash; fix ceph_encode_fh() hashing bug

2011-07-26T18:30:55+00:00

Have caller pass in a safely-obtained reference to the parent directory
for calculating a dentry's hash valud.

While we're here, simpify the flow through ceph_encode_fh() so that there
is a single exit point and cleanup.

Also fix a bug with the dentry hash calculation: calculate the hash for the
dentry we were given, not its parent.

Reviewed-by: Yehuda Sadeh 
Signed-off-by: Sage Weil

ceph: use ihold when we already have an inode ref

2011-06-08T04:34:11+00:00

We should use ihold whenever we already have a stable inode ref, even
when we aren't holding i_lock.  This avoids adding new and unnecessary
locking dependencies.

Signed-off-by: Sage Weil

ceph: avoid inode lookup on nfs fh reconnect

2011-05-24T18:52:06+00:00

If we get the inode from the MDS, we have a reference in req; don't do a
fresh lookup.

Signed-off-by: Sage Weil

ceph: use LOOKUPINO to make unconnected nfs fh more reliable

2011-05-24T18:52:05+00:00

If we are unable to locate an inode by ino, ask the MDS using the new
LOOKUPINO command.

Signed-off-by: Sage Weil

ceph: add dir_layout to inode

2011-01-12T23:15:12+00:00

Add a ceph_dir_layout to the inode, and calculate dentry hash values based
on the parent directory's specified dir_hash function.  This is needed
because the old default Linux dcache hash function is extremely week and
leads to a poor distribution of files among dir fragments.

Signed-off-by: Sage Weil

ceph: factor out libceph from Ceph file system

2010-10-20T22:37:28+00:00

This factors out protocol and low-level storage parts of ceph into a
separate libceph module living in net/ceph and include/linux/ceph.  This
is mostly a matter of moving files around.  However, a few key pieces
of the interface change as well:

 - ceph_client becomes ceph_fs_client and ceph_client, where the latter
   captures the mon and osd clients, and the fs_client gets the mds client
   and file system specific pieces.
 - Mount option parsing and debugfs setup is correspondingly broken into
   two pieces.
 - The mon client gets a generic handler callback for otherwise unknown
   messages (mds map, in this case).
 - The basic supported/required feature bits can be expanded (and are by
   ceph_fs_client).

No functional change, aside from some subtle error handling cases that got
cleaned up in the refactoring process.

Signed-off-by: Sage Weil

ceph: Update max_len with minimum required size

2010-10-07T15:00:24+00:00

encode_fh on error should update max_len with minimum required
size, so that caller can redo the call with the reallocated buffer.
This is required with open by handle patch series

Signed-off-by: Aneesh Kumar K.V 
Signed-off-by: Sage Weil