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authorJ. Bruce Fields <bfields@redhat.com>2012-12-10 18:01:37 -0500
committerJ. Bruce Fields <bfields@redhat.com>2012-12-17 22:00:16 -0500
commitafc59400d6c65bad66d4ad0b2daf879cbff8e23e (patch)
treecc4c1c4dcf01106259d4f18d637cb2d1115ef980 /fs/nfsd/vfs.c
parent79f77bf9a4e3dd5ead006b8f17e7c4ff07d8374e (diff)
downloadop-kernel-dev-afc59400d6c65bad66d4ad0b2daf879cbff8e23e.zip
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nfsd4: cleanup: replace rq_resused count by rq_next_page pointer
It may be a matter of personal taste, but I find this makes the code clearer. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd/vfs.c')
-rw-r--r--fs/nfsd/vfs.c18
1 files changed, 8 insertions, 10 deletions
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index b31e46e..f0a6d88 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -886,7 +886,7 @@ nfsd_splice_actor(struct pipe_inode_info *pipe, struct pipe_buffer *buf,
struct splice_desc *sd)
{
struct svc_rqst *rqstp = sd->u.data;
- struct page **pp = rqstp->rq_respages + rqstp->rq_resused;
+ struct page **pp = rqstp->rq_next_page;
struct page *page = buf->page;
size_t size;
@@ -894,17 +894,15 @@ nfsd_splice_actor(struct pipe_inode_info *pipe, struct pipe_buffer *buf,
if (rqstp->rq_res.page_len == 0) {
get_page(page);
- put_page(*pp);
- *pp = page;
- rqstp->rq_resused++;
+ put_page(*rqstp->rq_next_page);
+ *(rqstp->rq_next_page++) = page;
rqstp->rq_res.page_base = buf->offset;
rqstp->rq_res.page_len = size;
} else if (page != pp[-1]) {
get_page(page);
- if (*pp)
- put_page(*pp);
- *pp = page;
- rqstp->rq_resused++;
+ if (*rqstp->rq_next_page)
+ put_page(*rqstp->rq_next_page);
+ *(rqstp->rq_next_page++) = page;
rqstp->rq_res.page_len += size;
} else
rqstp->rq_res.page_len += size;
@@ -936,8 +934,8 @@ nfsd_vfs_read(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
.u.data = rqstp,
};
- WARN_ON_ONCE(rqstp->rq_resused != 1);
- rqstp->rq_resused = 1;
+ WARN_ON_ONCE(rqstp->rq_next_page != rqstp->rq_respages + 1);
+ rqstp->rq_next_page = rqstp->rq_respages + 1;
host_err = splice_direct_to_actor(file, &sd, nfsd_direct_splice_actor);
} else {
oldfs = get_fs();
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