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pnfs: encode_layoutcommit

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Add a layout driver method to encode the layout type specific
opaque part of layout commit in-line in the xdr stream.

Currently, the pnfs-objects layout driver uses it to encode metadata hints
to the MDS and the blocks layout driver to commit provisionally allocated
extents to the file.

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
This commit is contained in:
Benny Halevy
2011-05-22 19:53:48 +03:00
committed by Boaz Harrosh
parent adb58535e6
commit ac7db7264a
2 changed files with 17 additions and 3 deletions
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16
fs/nfs/nfs4xdr.c
View File

@@ -1875,6 +1875,7 @@ encode_layoutget(struct xdr_stream *xdr,
static int static int
encode_layoutcommit(struct xdr_stream *xdr, encode_layoutcommit(struct xdr_stream *xdr,
struct inode *inode,
const struct nfs4_layoutcommit_args *args, const struct nfs4_layoutcommit_args *args,
struct compound_hdr *hdr) struct compound_hdr *hdr)
{ {
@@ -1883,7 +1884,7 @@ encode_layoutcommit(struct xdr_stream *xdr,
dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten, dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
NFS_SERVER(args->inode)->pnfs_curr_ld->id); NFS_SERVER(args->inode)->pnfs_curr_ld->id);
p = reserve_space(xdr, 48 + NFS4_STATEID_SIZE); p = reserve_space(xdr, 44 + NFS4_STATEID_SIZE);
*p++ = cpu_to_be32(OP_LAYOUTCOMMIT); *p++ = cpu_to_be32(OP_LAYOUTCOMMIT);
/* Only whole file layouts */ /* Only whole file layouts */
p = xdr_encode_hyper(p, 0); /* offset */ p = xdr_encode_hyper(p, 0); /* offset */
@@ -1894,7 +1895,14 @@ encode_layoutcommit(struct xdr_stream *xdr,
p = xdr_encode_hyper(p, args->lastbytewritten); p = xdr_encode_hyper(p, args->lastbytewritten);
*p++ = cpu_to_be32(0); /* Never send time_modify_changed */ *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
*p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */ *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
*p++ = cpu_to_be32(0); /* no file layout payload */
if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit)
NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit(
NFS_I(inode)->layout, xdr, args);
else {
p = reserve_space(xdr, 4);
*p = cpu_to_be32(0); /* no layout-type payload */
}
hdr->nops++; hdr->nops++;
hdr->replen += decode_layoutcommit_maxsz; hdr->replen += decode_layoutcommit_maxsz;
@@ -2751,6 +2759,8 @@ static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
struct xdr_stream *xdr, struct xdr_stream *xdr,
struct nfs4_layoutcommit_args *args) struct nfs4_layoutcommit_args *args)
{ {
struct nfs4_layoutcommit_data *data =
container_of(args, struct nfs4_layoutcommit_data, args);
struct compound_hdr hdr = { struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args), .minorversion = nfs4_xdr_minorversion(&args->seq_args),
}; };
@@ -2758,7 +2768,7 @@ static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
encode_compound_hdr(xdr, req, &hdr); encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr); encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, NFS_FH(args->inode), &hdr); encode_putfh(xdr, NFS_FH(args->inode), &hdr);
encode_layoutcommit(xdr, args, &hdr); encode_layoutcommit(xdr, data->args.inode, args, &hdr);
encode_getfattr(xdr, args->bitmask, &hdr); encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr); encode_nops(&hdr);
} }

4
fs/nfs/pnfs.h
View File

@@ -108,6 +108,10 @@ struct pnfs_layoutdriver_type {
void (*encode_layoutreturn) (struct pnfs_layout_hdr *layoutid, void (*encode_layoutreturn) (struct pnfs_layout_hdr *layoutid,
struct xdr_stream *xdr, struct xdr_stream *xdr,
const struct nfs4_layoutreturn_args *args); const struct nfs4_layoutreturn_args *args);
void (*encode_layoutcommit) (struct pnfs_layout_hdr *layoutid,
struct xdr_stream *xdr,
const struct nfs4_layoutcommit_args *args);
}; };
struct pnfs_layout_hdr { struct pnfs_layout_hdr {