linux-toradex.git/fs/ceph, branch v3.2.55

ceph: wake up 'safe' waiters when unregistering request

2014-02-15T19:20:12+00:00

commit fc55d2c9448b34218ca58733a6f51fbede09575b upstream.

We also need to wake up 'safe' waiters if error occurs or request
aborted. Otherwise sync(2)/fsync(2) may hang forever.

Signed-off-by: Yan, Zheng 
Signed-off-by: Sage Weil 
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Ben Hutchings

ceph: cleanup aborted requests when re-sending requests.

2014-02-15T19:20:11+00:00

commit eb1b8af33c2e42a9a57fc0a7588f4a7b255d2e79 upstream.

Aborted requests usually get cleared when the reply is received.
If MDS crashes, no reply will be received. So we need to cleanup
aborted requests when re-sending requests.

Signed-off-by: Yan, Zheng 
Reviewed-by: Greg Farnum 
Signed-off-by: Sage Weil 
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Ben Hutchings

ceph: fix statvfs fr_size

2013-07-27T04:34:32+00:00

commit 92a49fb0f79f3300e6e50ddf56238e70678e4202 upstream.

Different versions of glibc are broken in different ways, but the short of
it is that for the time being, frsize should == bsize, and be used as the
multiple for the blocks, free, and available fields.  This mirrors what is
done for NFS.  The previous reporting of the page size for frsize meant
that newer glibc and df would report a very small value for the fs size.

Fixes http://tracker.ceph.com/issues/3793.

Signed-off-by: Sage Weil 
Reviewed-by: Greg Farnum 
Signed-off-by: Ben Hutchings

tmpfs,ceph,gfs2,isofs,reiserfs,xfs: fix fh_len checking

2012-10-30T23:26:40+00:00

commit 35c2a7f4908d404c9124c2efc6ada4640ca4d5d5 upstream.

Fuzzing with trinity oopsed on the 1st instruction of shmem_fh_to_dentry(),
	u64 inum = fid->raw[2];
which is unhelpfully reported as at the end of shmem_alloc_inode():

BUG: unable to handle kernel paging request at ffff880061cd3000
IP: [] shmem_alloc_inode+0x40/0x40
Oops: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC
Call Trace:
 [] ? exportfs_decode_fh+0x79/0x2d0
 [] do_handle_open+0x163/0x2c0
 [] sys_open_by_handle_at+0xc/0x10
 [] tracesys+0xe1/0xe6

Right, tmpfs is being stupid to access fid->raw[2] before validating that
fh_len includes it: the buffer kmalloc'ed by do_sys_name_to_handle() may
fall at the end of a page, and the next page not be present.

But some other filesystems (ceph, gfs2, isofs, reiserfs, xfs) are being
careless about fh_len too, in fh_to_dentry() and/or fh_to_parent(), and
could oops in the same way: add the missing fh_len checks to those.

Reported-by: Sasha Levin 
Signed-off-by: Hugh Dickins 
Cc: Al Viro 
Cc: Sage Weil 
Cc: Steven Whitehouse 
Cc: Christoph Hellwig 
Signed-off-by: Al Viro 
Signed-off-by: Ben Hutchings

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