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J. Bruce Fields fa0a21269f nfsd: bypass readahead cache when have struct file 
The readahead cache compensates for the fact that the NFS server
currently does an open and close on every IO operation in the NFSv2 and
NFSv3 case.

In the NFSv4 case we have long-lived struct files associated with client
opens, so there's no need for this.  In fact, concurrent IO's using
trying to modify the same file->f_ra may cause problems.

So, don't bother with the readahead cache in that case.

Note eventually we'll likely do this in the v2/v3 case as well by
keeping a cache of struct files instead of struct file_ra_state's.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
 		2010-07-27 18:15:54 -04:00
..
Kconfig nfsd : Define NFSD only when FILE_LOCKING is enabled 2009-03-18 17:30:48 -04:00
Makefile
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auth.c nfsd: remove pointless paths in file headers 2009-12-15 15:01:47 -05:00
auth.h
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cache.h nfsd: remove pointless paths in file headers 2009-12-15 15:01:47 -05:00
export.c Merge commit 'v2.6.34-rc6' 2010-05-04 11:29:05 -04:00
lockd.c nfsd: remove pointless paths in file headers 2009-12-15 15:01:47 -05:00
nfs2acl.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
nfs3acl.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
nfs3proc.c NFSD: Fill in WCC data for REMOVE, RMDIR, MKNOD, and MKDIR 2010-07-07 17:12:32 -04:00
nfs3xdr.c nfsd: remove pointless paths in file headers 2009-12-15 15:01:47 -05:00
nfs4acl.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
nfs4callback.c nfsd4: fix delegation recall race use-after-free 2010-06-24 12:24:55 -04:00
nfs4idmap.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
nfs4proc.c nfsd4: implement reclaim_complete 2010-05-13 12:03:11 -04:00
nfs4recover.c sanitize vfs_fsync calling conventions 2010-05-21 18:31:21 -04:00
nfs4state.c nfsd4: fix v4 state shutdown error paths 2010-07-23 08:51:22 -04:00
nfs4xdr.c nfsd4; fix session reference count leak 2010-06-22 17:19:28 -04:00
nfscache.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
nfsctl.c nfsd: just keep single lockd reference for nfsd 2010-07-23 08:51:26 -04:00
nfsd.h nfsd4: allow setting grace period time 2010-03-06 15:02:08 -05:00
nfsfh.c nfsd: fix "insecure" export option 2009-12-20 20:19:51 -08:00
nfsfh.h nfsd: move most of nfsfh.h to fs/nfsd 2009-12-15 15:01:46 -05:00
nfsproc.c nfsd: remove pointless paths in file headers 2009-12-15 15:01:47 -05:00
nfssvc.c nfsd: minor nfsd_svc() cleanup 2010-07-23 08:51:27 -04:00
nfsxdr.c nfsd: remove pointless paths in file headers 2009-12-15 15:01:47 -05:00
state.h nfsd4: keep a reference count on client while in use 2010-05-13 11:58:54 -04:00
stats.c nfsd: remove pointless paths in file headers 2009-12-15 15:01:47 -05:00
vfs.c nfsd: bypass readahead cache when have struct file 2010-07-27 18:15:54 -04:00
vfs.h nfsd: don't break lease while servicing a COMMIT 2010-03-22 15:37:53 -04:00
xdr.h nfsd: remove pointless paths in file headers 2009-12-15 15:01:47 -05:00
xdr3.h nfsd: remove pointless paths in file headers 2009-12-15 15:01:47 -05:00
xdr4.h nfsd4: implement reclaim_complete 2010-05-13 12:03:11 -04:00