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47fbf7976e
linux_dsm_epyc7002/fs/nfs
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Trond Myklebust 47fbf7976e NFSv4.1: Remove a bogus BUG_ON() in nfs4_layoutreturn_done 
Ever since commit 0a57cdac3f (NFSv4.1 send layoutreturn to fence
disconnected data server) we've been sending layoutreturn calls
while there is potentially still outstanding I/O to the data
servers. The reason we do this is to avoid races between replayed
writes to the MDS and the original writes to the DS.

When this happens, the BUG_ON() in nfs4_layoutreturn_done can
be triggered because it assumes that we would never call
layoutreturn without knowing that all I/O to the DS is
finished. The fix is to remove the BUG_ON() now that the
assumptions behind the test are obsolete.

Reported-by: Boaz Harrosh <bharrosh@panasas.com>
Reported-by: Tigran Mkrtchyan <tigran.mkrtchyan@desy.de>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@vger.kernel.org [>=3.5]
2012-08-08 16:03:13 -04:00
..
blocklayout pnfsblock: bail out partial page IO 2012-07-30 18:52:06 -04:00
objlayout pnfs-obj: Better IO pattern in case of unaligned offset 2012-08-02 17:42:51 -04:00
cache_lib.c NFS: remove RPC PipeFS mount point references from NFS cache routines 2012-01-31 18:20:26 -05:00
cache_lib.h NFS: DNS resolver PipeFS notifier introduced 2012-01-31 18:20:26 -05:00
callback_proc.c NFSv4: Further clean-ups of delegation stateid validation 2012-03-06 10:32:44 -05:00
callback_xdr.c SUNRPC: service request network namespace helper introduced 2012-07-27 16:49:21 -04:00
callback.c nfs: increase number of permitted callback connections. 2012-07-31 12:33:29 -04:00
callback.h NFS: Convert v4 into a module 2012-07-30 19:06:52 -04:00
client.c NFS: Convert v4 into a module 2012-07-30 19:06:52 -04:00
delegation.c NFS: Create a return_delegation rpc op 2012-06-29 11:46:45 -04:00
delegation.h NFS: Convert v4 into a module 2012-07-30 19:06:52 -04:00
dir.c NFS: Convert v4 into a module 2012-07-30 19:06:52 -04:00
direct.c Merge branch 'akpm' (Andrew's patch-bomb) 2012-07-31 19:25:39 -07:00
dns_resolve.c NFS: Convert v4 into a module 2012-07-30 19:06:52 -04:00
dns_resolve.h NFS: DNS resolver cache per network namespace context introduced 2012-01-31 18:20:26 -05:00
file.c Merge branch 'akpm' (Andrew's patch-bomb) 2012-07-31 19:25:39 -07:00
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 NFS: Don't pass mount data to nfs_fscache_get_super_cookie() 2012-05-14 17:30:26 -07:00
fscache.h NFS: Fix a compile issue when CONFIG_NFS_FSCACHE was undefined 2012-05-16 10:24:20 -07:00
getroot.c NFS: Move the v4 getroot code to nfs4getroot.c 2012-07-17 13:33:51 -04:00
idmap.c NFS: Keep module parameters in the generic NFS client 2012-07-30 19:06:31 -04:00
inode.c Merge branch 'akpm' (Andrew's patch-bomb) 2012-07-31 19:25:39 -07:00
internal.h Merge branch 'akpm' (Andrew's patch-bomb) 2012-07-31 19:25:39 -07:00
iostat.h NFS: Squelch compiler warning in nfs_add_server_stats() 2010-05-14 15:09:31 -04:00
Kconfig Merge branch 'akpm' (Andrew's patch-bomb) 2012-07-31 19:25:39 -07:00
Makefile NFS: Convert v4 into a module 2012-07-30 19:06:52 -04:00
mount_clnt.c SUNRPC/NFS: Add Kbuild dependencies for NFS_DEBUG/RPC_DEBUG 2012-03-20 13:08:26 -04:00
namespace.c NFS: Convert v4 into a module 2012-07-30 19:06:52 -04:00
netns.h NFS: Convert v4 into a module 2012-07-30 19:06:52 -04:00
nfs2super.c NFS: Convert v2 into a module 2012-07-30 19:06:41 -04:00
nfs2xdr.c NFS: Let xdr_read_pages() check for buffer overflows 2012-06-28 17:20:43 -04:00
nfs3acl.c NFS: Fix a number of sparse warnings 2012-03-11 15:14:16 -04:00
nfs3client.c NFS: Only initialize the ACL client in the v3 case 2012-07-30 19:05:54 -04:00
nfs3proc.c NFS: Only initialize the ACL client in the v3 case 2012-07-30 19:05:54 -04:00
nfs3super.c NFS: Convert v3 into a module 2012-07-30 19:06:46 -04:00
nfs3xdr.c NFS: Cleanup - only store the write verifier in struct nfs_page 2012-06-28 17:20:50 -04:00
nfs4_fs.h NFS: Convert v4 into a module 2012-07-30 19:06:52 -04:00
nfs4client.c NFS: Keep module parameters in the generic NFS client 2012-07-30 19:06:31 -04:00
nfs4file.c NFS: Split out NFS v4 file operations 2012-07-17 13:33:50 -04:00
nfs4filelayout.c NFSv4.1 don't send LAYOUTCOMMIT if data resent through MDS 2012-07-16 14:37:00 -04:00
nfs4filelayout.h NFSv4.1 resend LAYOUTGET on data server invalid layout errors 2012-05-19 17:55:33 -04:00
nfs4filelayoutdev.c NFSv4.1: Use session max response size for GETDEVICEINFO gdia_maxcount 2012-06-28 17:20:50 -04:00
nfs4getroot.c NFS: Move the v4 getroot code to nfs4getroot.c 2012-07-17 13:33:51 -04:00
nfs4namespace.c Merge branch 'bugfixes' into nfs-for-next 2012-05-21 10:12:39 -04:00
nfs4proc.c NFSv4.1: Remove a bogus BUG_ON() in nfs4_layoutreturn_done 2012-08-08 16:03:13 -04:00
nfs4renewd.c NFS: Add NFSDBG_STATE 2012-05-22 16:45:42 -04:00
nfs4state.c NFS: Clean up nfs4_proc_setclientid() and friends 2012-07-16 15:12:16 -04:00
nfs4super.c NFS: Convert v4 into a module 2012-07-30 19:06:52 -04:00
nfs4sysctl.c NFS: Initialize v4 sysctls from nfs_init_v4() 2012-07-17 13:33:18 -04:00
nfs4xdr.c NFS: Keep module parameters in the generic NFS client 2012-07-30 19:06:31 -04:00
nfs.h NFS: Convert v4 into a module 2012-07-30 19:06:52 -04:00
nfsroot.c SUNRPC/NFS: Add Kbuild dependencies for NFS_DEBUG/RPC_DEBUG 2012-03-20 13:08:26 -04:00
pagelist.c NFS41: add pg_layout_private to nfs_pageio_descriptor 2012-08-02 17:41:18 -04:00
pnfs_dev.c NFS: Fix more NFS debug related build warnings 2012-03-21 09:31:44 -04:00
pnfs.c pnfs: defer release of pages in layoutget 2012-08-02 17:38:54 -04:00
pnfs.h pnfs: nfs4_proc_layoutget returns void 2012-08-02 17:39:06 -04:00
proc.c NFS: Only initialize the ACL client in the v3 case 2012-07-30 19:05:54 -04:00
read.c Merge branch 'akpm' (Andrew's patch-bomb) 2012-07-31 19:25:39 -07:00
super.c NFS: Convert v4 into a module 2012-07-30 19:06:52 -04:00
symlink.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
sysctl.c NFS: Initialize v4 sysctls from nfs_init_v4() 2012-07-17 13:33:18 -04:00
unlink.c NFS: Create a return_delegation rpc op 2012-06-29 11:46:45 -04:00
write.c nfs: tear down caches in nfs_init_writepagecache when allocation fails 2012-08-02 17:36:07 -04:00