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nfsd: Add ALLOCATE support

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The ALLOCATE operation is used to preallocate space in a file.  I can do
this by using vfs_fallocate() to do the actual preallocation.

ALLOCATE only returns a status indicator, so we don't need to write a
special encode() function.

Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Anna Schumaker
2014-11-07 14:44:26 -05:00
committed by J. Bruce Fields
parent 72c72bdf7b
commit 95d871f03c
5 changed files with 85 additions and 1 deletions
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19
fs/nfsd/nfs4xdr.c
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@@ -1513,6 +1513,23 @@ static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, str
DECODE_TAIL;
}
static __be32
nfsd4_decode_fallocate(struct nfsd4_compoundargs *argp,
struct nfsd4_fallocate *fallocate)
{
DECODE_HEAD;
status = nfsd4_decode_stateid(argp, &fallocate->falloc_stateid);
if (status)
return status;
READ_BUF(16);
p = xdr_decode_hyper(p, &fallocate->falloc_offset);
xdr_decode_hyper(p, &fallocate->falloc_length);
DECODE_TAIL;
}
static __be32
nfsd4_decode_seek(struct nfsd4_compoundargs *argp, struct nfsd4_seek *seek)
{
@@ -1604,7 +1621,7 @@ static nfsd4_dec nfsd4_dec_ops[] = {
[OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_reclaim_complete,
/* new operations for NFSv4.2 */
[OP_ALLOCATE] = (nfsd4_dec)nfsd4_decode_notsupp,
[OP_ALLOCATE] = (nfsd4_dec)nfsd4_decode_fallocate,
[OP_COPY] = (nfsd4_dec)nfsd4_decode_notsupp,
[OP_COPY_NOTIFY] = (nfsd4_dec)nfsd4_decode_notsupp,
[OP_DEALLOCATE] = (nfsd4_dec)nfsd4_decode_notsupp,