linux-toradex.git/fs/ceph, branch v3.2.3

ceph: disable use of dcache for readdir etc.

2011-12-29T16:05:14+00:00

Ceph attempts to use the dcache to satisfy negative lookups and readdir
when the entire directory contents are in cache.  Disable this behavior
until lingering bugs in this code are shaken out; we'll re-enable these
hooks once things are fully stable.

Signed-off-by: Sage Weil

ceph: add missing spin_unlock at ceph_mdsc_build_path()

2011-12-13T19:59:53+00:00

one of the paths was missing spin_unlock

Signed-off-by: Yehuda Sadeh

ceph: fix SEEK_CUR, SEEK_SET regression

2011-12-13T17:19:26+00:00

Commit 06222e491e663dac939f04b125c9dc52126a75c4 got the if wrong so that
it always evaluates as true.  This is semantically harmless, but makes
SEEK_CUR and SEEK_SET needlessly query the server.

Rewrite the if to explicitly enumerate the cases we DO need a valid i_size
to make this code less fragile.

Reported-by: Roel Kluin 
Signed-off-by: Sage Weil

ceph: use i_ceph_lock instead of i_lock

2011-12-07T18:46:44+00:00

We have been using i_lock to protect all kinds of data structures in the
ceph_inode_info struct, including lists of inodes that we need to iterate
over while avoiding races with inode destruction.  That requires grabbing
a reference to the inode with the list lock protected, but igrab() now
takes i_lock to check the inode flags.

Changing the list lock ordering would be a painful process.

However, using a ceph-specific i_ceph_lock in the ceph inode instead of
i_lock is a simple mechanical change and avoids the ordering constraints
imposed by igrab().

Reported-by: Amon Ott 
Signed-off-by: Sage Weil

ceph: fix rasize reporting by ceph_show_options

2011-12-02T17:27:54+00:00

Fix typo.

Reported-by: mowang da 
Signed-off-by: Sage Weil

ceph: initialize root dentry

2011-11-11T17:50:17+00:00

Set up d_fsdata on the root dentry.  This fixes a NULL pointer dereference
in ceph_d_prune on umount.  It also means we can eventually strip out all
of the conditional checks on d_fsdata because it is now set unconditionally
(prior to setting up the d_ops).

Fix the ceph_d_prune debug print while we're here.

Signed-off-by: Sage Weil

ceph: fix iput race when queueing inode work

2011-11-06T05:06:31+00:00

If we queue a work item that calls iput(), make sure we ihold() before
attempting to queue work. Otherwise our queued work might miraculously run
before we notice the queue_work() succeeded and call ihold(), allowing the
inode to be destroyed.

That is, instead of

	if (queue_work(...))
		ihold();

we need to do

	ihold();
	if (!queue_work(...))
		iput();

Reported-by: Amon Ott 
Signed-off-by: Sage Weil

ceph/super.c: quiet sparse noise

2011-11-06T04:10:12+00:00

Quiet the sparse noise:

warning: symbol 'create_fs_client' was not declared. Should it be static?
warning: symbol 'destroy_fs_client' was not declared. Should it be static?

Signed-off-by: H Hartley Sweeten 
Cc: Sage Weil 
ceph-devel@vger.kernel.org
Signed-off-by: Sage Weil

ceph/mds_client.c: quiet sparse noise

2011-11-06T04:10:11+00:00

Quiet the following sparse noise:

warning: symbol 'get_nonsnap_parent' was not declared. Should it be static?
warning: symbol 'done_closing_sessions' was not declared. Should it be static?

Local functions don't need external visability. Make them static.

Signed-off-by: H Hartley Sweeten 
Cc: Sage Weil 
Signed-off-by: Sage Weil

ceph: use new D_COMPLETE dentry flag

2011-11-06T04:10:10+00:00

We used to use a flag on the directory inode to track whether the dcache
contents for a directory were a complete cached copy.  Switch to a dentry
flag CEPH_D_COMPLETE that is safely updated by ->d_prune().

Signed-off-by: Sage Weil