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kernel-ark/fs/nfsd
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J. Bruce Fields 221a687669 nfsd4: don't destroy in-use clients 
When a setclientid_confirm or create_session confirms a client after a
client reboot, it also destroys any previous state held by that client.

The shutdown of that previous state must be careful not to free the
client out from under threads processing other requests that refer to
the client.

This is a particular problem in the NFSv4.1 case when we hold a
reference to a session (hence a client) throughout compound processing.

The server attempts to handle this by unhashing the client at the time
it's destroyed, then delaying the final free to the end.  But this still
leaves some races in the current code.

I believe it's simpler just to fail the attempt to destroy the client by
returning NFS4ERR_DELAY.  This is a case that should never happen
anyway.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2013-04-03 11:48:39 -04:00
..
acl.h nfsd: Remove declaration of nonexistent nfs4_acl_permisison 2013-02-13 06:15:35 -08:00
auth.c nfsd: Properly compare and initialize kuids and kgids 2013-02-13 06:16:09 -08:00
auth.h nfsd: Remove nfsd_luid, nfsd_lgid, nfsd_ruid and nfsd_rgid 2013-02-13 06:15:51 -08:00
cache.h nfsd: add new reply_cache_stats file in nfsdfs 2013-04-03 11:47:24 -04:00
current_stateid.h nfsd41: use current stateid by value 2012-02-15 11:20:45 -05:00
export.c Merge branch 'for-3.9' of git://linux-nfs.org/~bfields/linux 2013-02-28 18:02:55 -08:00
fault_inject.c Merge branch 'for-3.9' of git://linux-nfs.org/~bfields/linux 2013-02-28 18:02:55 -08:00
idmap.h nfsd: Convert idmap to use kuids and kgids 2013-02-13 06:15:49 -08:00
Kconfig fs/nfsd: remove depends on CONFIG_EXPERIMENTAL 2013-01-21 14:39:05 -08:00
lockd.c
Makefile NFSD: Added fault injection 2011-11-07 21:10:47 -05:00
netns.h nfsd: make NFSd service structure allocated per net 2012-12-10 16:25:39 -05:00
nfs2acl.c nfsd: handle vfs_getattr errors in acl protocol 2013-02-26 02:46:09 -05:00
nfs3acl.c nfsd4: cleanup: replace rq_resused count by rq_next_page pointer 2012-12-17 22:00:16 -05:00
nfs3proc.c switch vfs_getattr() to struct path 2013-02-26 02:46:08 -05:00
nfs3xdr.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-02-26 20:16:07 -08:00
nfs4acl.c nfsd: Handle kuids and kgids in the nfs4acl to posix_acl conversion 2013-02-13 06:16:06 -08:00
nfs4callback.c nfsd: make NFSv4 lease time per net 2012-11-28 10:39:46 -05:00
nfs4idmap.c Merge branch 'for-3.9' of git://linux-nfs.org/~bfields/linux 2013-02-28 18:02:55 -08:00
nfs4proc.c nfsd4: handle seqid-mutating open errors from xdr decoding 2013-04-03 11:47:53 -04:00
nfs4recover.c Merge branch 'for-3.9' of git://linux-nfs.org/~bfields/linux 2013-02-28 18:02:55 -08:00
nfs4state.c nfsd4: don't destroy in-use clients 2013-04-03 11:48:39 -04:00
nfs4xdr.c nfsd4: don't destroy in-use clients 2013-04-03 11:48:39 -04:00
nfscache.c nfsd: scale up the number of DRC hash buckets with cache size 2013-04-03 11:47:25 -04:00
nfsctl.c nfsd: add new reply_cache_stats file in nfsdfs 2013-04-03 11:47:24 -04:00
nfsd.h fs/nfsd: change type of max_delegations, nfsd_drc_max_mem and nfsd_drc_mem_used 2013-02-23 17:50:22 -08:00
nfsfh.c exportfs: add FILEID_INVALID to indicate invalid fid_type 2012-11-07 19:22:30 -05:00
nfsfh.h fs: propagate umode_t, misc bits 2012-01-03 22:55:10 -05:00
nfsproc.c switch vfs_getattr() to struct path 2013-02-26 02:46:08 -05:00
nfssvc.c Merge branch 'for-3.9' of git://linux-nfs.org/~bfields/linux 2013-02-28 18:02:55 -08:00
nfsxdr.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-02-26 20:16:07 -08:00
state.h nfsd4: don't destroy in-use clients 2013-04-03 11:48:39 -04:00
stats.c SUNRPC: register service stats /proc entries in passed network namespace context 2012-01-31 19:28:18 -05:00
vfs.c nfsd: fix bad offset use 2013-03-22 16:55:15 -04:00
vfs.h switch vfs_getattr() to struct path 2013-02-26 02:46:08 -05:00
xdr3.h nfsd: handle vfs_getattr errors in acl protocol 2013-02-26 02:46:09 -05:00
xdr4.h nfsd: remove unused macro in nfsv4 2013-04-03 11:48:33 -04:00
xdr.h nfsd: handle vfs_getattr errors in acl protocol 2013-02-26 02:46:09 -05:00