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nfsd4: move more write parameters into xdr argument 

In preparation for moving some of this elsewhere.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
J. Bruce Fields 2012-11-16 14:16:46 -05:00
parent 5a80a54d21
commit 70cc7f75b1
2 changed files with 11 additions and 11 deletions
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20
fs/nfsd/nfs4xdr.c
View File

@ -1139,16 +1139,17 @@ nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify
DECODE_TAIL;
}
static int fill_in_write_vector(struct kvec *vec, struct kvec *head, struct page **pagelist, int buflen)
static int fill_in_write_vector(struct kvec *vec, struct nfsd4_write *write)
{
int i = 1;
int buflen = write->wr_buflen;
vec[0].iov_base = head->iov_base;
vec[0].iov_len = min_t(int, buflen, head->iov_len);
vec[0].iov_base = write->wr_head.iov_base;
vec[0].iov_len = min_t(int, buflen, write->wr_head.iov_len);
buflen -= vec[0].iov_len;
while (buflen) {
vec[i].iov_base = page_address(pagelist[i - 1]);
vec[i].iov_base = page_address(write->wr_pagelist[i - 1]);
vec[i].iov_len = min_t(int, PAGE_SIZE, buflen);
buflen -= vec[i].iov_len;
i++;
@ -1161,8 +1162,6 @@ nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write)
{
int avail;
int len;
struct page **pagelist;
struct kvec head;
DECODE_HEAD;
status = nfsd4_decode_stateid(argp, &write->wr_stateid);
@ -1185,10 +1184,10 @@ nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write)
__FILE__, __LINE__);
goto xdr_error;
}
head.iov_base = p;
head.iov_len = avail;
write->wr_head.iov_base = p;
write->wr_head.iov_len = avail;
WARN_ON(avail != (XDR_QUADLEN(avail) << 2));
pagelist = argp->pagelist;
write->wr_pagelist = argp->pagelist;
len = XDR_QUADLEN(write->wr_buflen) << 2;
if (len >= avail) {
@ -1205,8 +1204,7 @@ nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write)
argp->end = argp->p + XDR_QUADLEN(PAGE_SIZE);
}
argp->p += XDR_QUADLEN(len);
write->wr_vlen = fill_in_write_vector(argp->rqstp->rq_vec,
&head, pagelist, write->wr_buflen);
write->wr_vlen = fill_in_write_vector(argp->rqstp->rq_vec, write);
WARN_ON_ONCE(write->wr_vlen > ARRAY_SIZE(argp->rqstp->rq_vec));
DECODE_TAIL;

2
fs/nfsd/xdr4.h
View File

@ -386,6 +386,8 @@ struct nfsd4_write {
u32 wr_stable_how; /* request */
u32 wr_buflen; /* request */
int wr_vlen;
struct kvec wr_head;
struct page ** wr_pagelist; /* request */
u32 wr_bytes_written; /* response */
u32 wr_how_written; /* response */