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7ff4cff637
linux/fs/nfs
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Tigran Mkrtchyan 7ff4cff637 nfs41: do not return ENOMEM on LAYOUTUNAVAILABLE 
A pNFS server may return LAYOUTUNAVAILABLE error on LAYOUTGET for files
which don't have any layout. In this situation pnfs_update_layout
currently returns NULL. As this NULL is converted into ENOMEM, IO
requests fails instead of falling back to MDS.

Do not return ENOMEM on LAYOUTUNAVAILABLE and let client retry through
MDS.

Fixes 8d40b0f148. I will suggest to backport this fix to affected
stable branches.

Signed-off-by: Tigran Mkrtchyan <tigran.mkrtchyan@desy.de>
[trondmy: Use IS_ERR_OR_NULL()]
Fixes: 8d40b0f148 ("NFS filelayout:call GETDEVICEINFO after...")
Cc: stable@vger.kernel.org # v4.11+
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2018-01-18 12:51:31 -05:00
..
blocklayout pnfs/blocklayout: handle transient devices 2018-01-14 23:06:29 -05:00
filelayout nfs41: do not return ENOMEM on LAYOUTUNAVAILABLE 2018-01-18 12:51:31 -05:00
flexfilelayout NFS client updates for Linux 4.15 2017-11-17 14:18:00 -08:00
cache_lib.c NFS client updates for Linux 4.15 2017-11-17 14:18:00 -08:00
cache_lib.h NFS client updates for Linux 4.15 2017-11-17 14:18:00 -08:00
callback_proc.c NFS client updates for Linux 4.15 2017-11-17 14:18:00 -08:00
callback_xdr.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
callback.c NFS client updates for Linux 4.15 2017-11-17 14:18:00 -08:00
callback.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
client.c nfs: fix a deadlock in nfs client initialization 2017-12-15 14:31:49 -05:00
delegation.c NFSv4: Retry CLOSE and DELEGRETURN on NFS4ERR_OLD_STATEID. 2017-11-17 16:43:47 -05:00
delegation.h NFS client updates for Linux 4.15 2017-11-17 14:18:00 -08:00
dir.c Rename superblock flags (MS_xyz -> SB_xyz) 2017-11-27 13:05:09 -08:00
direct.c NFS: commit direct writes even if they fail partially 2018-01-16 10:13:23 -05:00
dns_resolve.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dns_resolve.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
export.c nfs: remove unused label in nfs_encode_fh() 2018-01-16 10:12:49 -05:00
file.c NFS: Revert "NFS: Move the flock open mode check into nfs_flock()" 2017-11-17 16:43:52 -05:00
fscache-index.c fscache: remove unused ->now_uncached callback 2017-09-06 17:27:26 -07:00
fscache.c nfs: define nfs_inc_fscache_stats and using it as possible 2014-11-24 20:08:47 -05:00
fscache.h NFS: Use i_writecount to control whether to get an fscache cookie in nfs_open() 2013-09-27 18:40:25 +01:00
getroot.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
inode.c Support statx() mask and query flags parameters 2018-01-14 23:06:29 -05:00
internal.h Rename superblock flags (MS_xyz -> SB_xyz) 2017-11-27 13:05:09 -08:00
io.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
iostat.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kconfig pnfs/blocklayout: require 64-bit sector_t 2017-08-11 14:10:13 -04:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mount_clnt.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
namespace.c NFS: Use ERR_CAST() to avoid cross-structure cast 2017-05-28 10:11:47 -07:00
netns.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfs2super.c
nfs2xdr.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfs3_fs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfs3acl.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfs3client.c NFS: Remove unused authflavour parameter from nfs_get_client() 2016-12-01 17:46:32 -05:00
nfs3proc.c NFS client updates for Linux 4.15 2017-11-17 14:18:00 -08:00
nfs3super.c nfsv3: introduce nfs3_set_ds_client 2015-02-03 11:06:34 -08:00
nfs3xdr.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfs4_fs.h NFS client updates for Linux 4.15 2017-11-17 14:18:00 -08:00
nfs4client.c nfs: Update server port after referral or migration 2018-01-14 23:06:30 -05:00
nfs4file.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfs4getroot.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfs4idmap.c NFS: Cleanup error handling in nfs_idmap_request_key() 2017-10-01 18:51:30 -04:00
nfs4idmap.h NFS: Move nfs_idmap.h into fs/nfs/ 2015-04-23 15:16:14 -04:00
nfs4namespace.c nfs: Referrals should use the same proto setting as their parent 2018-01-14 23:06:30 -05:00
nfs4proc.c NFSv4: always set NFS_LOCK_LOST when a lock is lost. 2018-01-14 23:06:29 -05:00
nfs4renewd.c NFSv4: Set the connection timeout to match the lease period 2017-02-09 14:15:16 -05:00
nfs4session.c NFSv4.1: Fix regression in callback retry handling 2016-12-01 17:21:38 -05:00
nfs4session.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfs4state.c NFSv4: always set NFS_LOCK_LOST when a lock is lost. 2018-01-14 23:06:29 -05:00
nfs4super.c NFS: Move nfs_idmap.h into fs/nfs/ 2015-04-23 15:16:14 -04:00
nfs4sysctl.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfs4trace.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfs4trace.h NFS client updates for Linux 4.15 2017-11-17 14:18:00 -08:00
nfs4xdr.c NFS: Fix nfsstat breakage due to LOOKUPP 2018-01-14 23:06:29 -05:00
nfs42.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfs42proc.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfs42xdr.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfsroot.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfstrace.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfstrace.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pagelist.c NFS: remove unused offset arg in nfs_pgio_rpcsetup 2018-01-14 23:06:29 -05:00
pnfs_dev.c pnfs/blocklayout: handle transient devices 2018-01-14 23:06:29 -05:00
pnfs_nfs.c fs, nfs: convert nfs4_pnfs_ds.ds_count from atomic_t to refcount_t 2017-11-17 13:47:59 -05:00
pnfs.c nfs/pnfs: fix nfs_direct_req ref leak when i/o falls back to the mds 2018-01-14 23:06:29 -05:00
pnfs.h pnfs/blocklayout: handle transient devices 2018-01-14 23:06:29 -05:00
proc.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
read.c NFS: Add static NFS I/O tracepoints 2017-09-11 22:20:38 -04:00
super.c Rename superblock flags (MS_xyz -> SB_xyz) 2017-11-27 13:05:09 -08:00
symlink.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sysctl.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
unlink.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
write.c NFS: Add a cond_resched() to nfs_commit_release_pages() 2018-01-14 23:06:28 -05:00