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| author | Fred Isaman <iisaman@netapp.com> | 2011-01-06 11:36:22 +0000 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2011-01-06 14:46:31 -0500 |
| commit | fd6002e9b8a93220d5f53b93d9624caf73cdc8a2 (patch) | |
| tree | f45c22c9ec855949b1ec0488162229df4eb3f5ed /fs/nfs/nfs4xdr.c | |
| parent | b7edfaa1983362842351e425adeb8e297b4c11fb (diff) | |
| download | op-kernel-dev-fd6002e9b8a93220d5f53b93d9624caf73cdc8a2.zip op-kernel-dev-fd6002e9b8a93220d5f53b93d9624caf73cdc8a2.tar.gz | |
pnfs: change layout state seqlock to a spinlock
This prepares for future changes, where the layout state needs
to change atomically with several other variables. In particular,
it will need to know if lo->segs is empty, as we test that instead
of manipulating the NFS_LAYOUT_STATEID_SET bit. Moreover, the
layoutstateid is not really a read-mostly structure, as it is
written almost as often as it is read.
The behavior of pnfs_get_layout_stateid is also slightly changed, so that
it no longer changes the stateid. Its name is changed to +pnfs_choose_layoutget_stateid.
Signed-off-by: Fred Isaman <iisaman@netapp.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/nfs4xdr.c')
| -rw-r--r-- | fs/nfs/nfs4xdr.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index f3f9915..4e28242 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -1798,7 +1798,7 @@ encode_layoutget(struct xdr_stream *xdr, p = xdr_encode_hyper(p, args->range.offset); p = xdr_encode_hyper(p, args->range.length); p = xdr_encode_hyper(p, args->minlength); - pnfs_get_layout_stateid(&stateid, NFS_I(args->inode)->layout, + pnfs_choose_layoutget_stateid(&stateid, NFS_I(args->inode)->layout, args->ctx->state); p = xdr_encode_opaque_fixed(p, &stateid.data, NFS4_STATEID_SIZE); *p = cpu_to_be32(args->maxcount); |
