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f9d7562fdb
linux/fs/nfsd
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J. Bruce Fields f9d7562fdb nfsd4: share file descriptors between stateid's 
The vfs doesn't really allow us to "upgrade" a file descriptor from
read-only to read-write, and our attempt to do so in nfs4_upgrade_open
is ugly and incomplete.

Move to a different scheme where we keep multiple opens, shared between
open stateid's, in the nfs4_file struct.  Each file will be opened at
most 3 times (for read, write, and read-write), and those opens will be
shared between all clients and openers.  On upgrade we will do another
open if necessary instead of attempting to upgrade an existing open.
We keep count of the number of readers and writers so we know when to
close the shared files.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2010-07-29 18:19:23 -04:00
..
auth.c nfsd: remove pointless paths in file headers 2009-12-15 15:01:47 -05:00
auth.h
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
Kconfig
lockd.c nfsd: remove pointless paths in file headers 2009-12-15 15:01:47 -05:00
Makefile
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: share file descriptors between stateid's 2010-07-29 18:19:23 -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: share file descriptors between stateid's 2010-07-29 18:19:23 -04:00
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: share file descriptors between stateid's 2010-07-29 18:19:23 -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
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
xdr.h nfsd: remove pointless paths in file headers 2009-12-15 15:01:47 -05:00