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fe0fe83585
kernel-ark/fs/nfs
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Boaz Harrosh fe0fe83585 pnfs-obj: Must return layout on IO error 
As mandated by the standard. In case of an IO error, a pNFS
objects layout driver must return it's layout. This is because
all device errors are reported to the server as part of the
layout return buffer.

This is implemented the same way PNFS_LAYOUTRET_ON_SETATTR
is done, through a bit flag on the pnfs_layoutdriver_type->flags
member. The flag is set by the layout driver that wants a
layout_return preformed at pnfs_ld_{write,read}_done in case
of an error.
(Though I have not defined a wrapper like pnfs_ld_layoutret_on_setattr
 because this code is never called outside of pnfs.c and pnfs IO
 paths)

Without this patch 3.[0-2] Kernels leak memory and have an annoying
WARN_ON after every IO error utilizing the pnfs-obj driver.

[This patch is for 3.2 Kernel. 3.1/0 Kernels need a different patch]
CC: Stable Tree <stable@kernel.org>
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-01-06 08:55:33 -05:00
..
blocklayout pnfsblock: fix writeback deadlock 2011-10-18 09:08:15 -07:00
objlayout pnfs-obj: Must return layout on IO error 2012-01-06 08:55:33 -05:00
cache_lib.c switch vfs_path_lookup() to struct path 2011-07-20 01:44:14 -04:00
cache_lib.h atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
callback_proc.c NFSv4.1: fix backchannel slotid off-by-one bug 2012-01-05 10:42:40 -05:00
callback_xdr.c nfs: set vs_hidden on nfs4_callback_version4 (try #2) 2011-11-04 09:00:09 -04:00
callback.c sunrpc: use better NUMA affinities 2011-08-19 13:25:36 -04:00
callback.h NFSv4.1: Fix the callback 'highest_used_slotid' behaviour 2011-08-04 11:55:35 -04:00
client.c NFS: Cache state owners after files are closed 2012-01-05 11:59:18 -05:00
delegation.c NFS: Use the inode->i_version to cache NFSv4 change attribute information 2011-10-18 09:14:34 -07:00
delegation.h
dir.c nfs: when attempting to open a directory, fall back on normal lookup (try #5) 2011-11-04 16:39:04 -04:00
direct.c atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
dns_resolve.c
dns_resolve.h
file.c NFS - fix recent breakage to NFS error handling. 2012-01-05 10:42:39 -05:00
fscache-index.c NFS: Use the inode->i_version to cache NFSv4 change attribute information 2011-10-18 09:14:34 -07:00
fscache.c FS-Cache: Add a helper to bulk uncache pages on an inode 2011-07-07 13:21:56 -07:00
fscache.h
getroot.c Merge branch 'nfs-for-2.6.39' into nfs-for-next 2011-03-24 17:03:14 -04:00
idmap.c SUNRPC/NFS: make rpc pipe upcall generic 2011-10-18 09:08:12 -07:00
inode.c nfs: when attempting to open a directory, fall back on normal lookup (try #5) 2011-11-04 16:39:04 -04:00
internal.h NFS: Revert pnfs ugliness from the generic NFS read code path 2011-11-10 14:50:26 -05:00
iostat.h
Kconfig pnfs: Automatically select blocks & objects layouts 2011-08-11 17:51:27 -07:00
Makefile pnfsblock: add blocklayout Kconfig option, Makefile, and stubs 2011-07-31 12:18:15 -04:00
mount_clnt.c
namespace.c NFS: Add SECINFO_NO_NAME procedure 2011-07-12 13:40:27 -04:00
nfs2xdr.c
nfs3acl.c switch posix_acl_create() to umode_t * 2011-08-01 02:09:42 -04:00
nfs3proc.c nfs: when attempting to open a directory, fall back on normal lookup (try #5) 2011-11-04 16:39:04 -04:00
nfs3xdr.c NFS: Fix "kernel BUG at fs/nfs/nfs3xdr.c:1338!" 2011-01-25 15:24:47 -05:00
nfs4_fs.h NFS: Cache state owners after files are closed 2012-01-05 11:59:18 -05:00
nfs4filelayout.c nfs: fix a minor do_div portability issue 2012-01-05 10:42:42 -05:00
nfs4filelayout.h NFSv4.1: do not use deviceids after MDS clientid invalidation 2011-07-12 13:40:29 -04:00
nfs4filelayoutdev.c NFS: fix comment 2011-07-12 13:40:27 -04:00
nfs4namespace.c nfs: nfs_do_{ref,sub}mount() superblock argument is redundant 2011-03-16 16:48:06 -04:00
nfs4proc.c NFSv4: include bitmap in nfsv4 get acl data 2012-01-05 10:42:42 -05:00
nfs4renewd.c NFSv4: The NFSv4.0 client must send RENEW calls if it holds a delegation 2011-08-24 15:07:37 -04:00
nfs4state.c NFS: Cache state owners after files are closed 2012-01-05 11:59:18 -05:00
nfs4xdr.c NFSv4: include bitmap in nfsv4 get acl data 2012-01-05 10:42:42 -05:00
nfsroot.c NFS: Revert NFSROOT default mount options 2011-05-27 17:42:47 -04:00
pagelist.c Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux 2011-11-06 19:44:47 -08:00
pnfs_dev.c fs: add export.h to files using EXPORT_SYMBOL/THIS_MODULE macros 2011-10-31 19:30:31 -04:00
pnfs.c pnfs-obj: Must return layout on IO error 2012-01-06 08:55:33 -05:00
pnfs.h pnfs-obj: Must return layout on IO error 2012-01-06 08:55:33 -05:00
proc.c nfs: when attempting to open a directory, fall back on normal lookup (try #5) 2011-11-04 16:39:04 -04:00
read.c NFS: Revert pnfs ugliness from the generic NFS read code path 2011-11-10 14:50:26 -05:00
super.c nfs: fix regression in handling of context= option in NFSv4 2012-01-05 10:42:40 -05:00
symlink.c
sysctl.c
unlink.c NFS: Get rid of nfs_restart_rpc() 2011-10-19 13:58:30 -07:00
write.c Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux 2011-11-06 19:44:47 -08:00