Commit b2b39fa4 authored by Jens Axboe's avatar Jens Axboe
Browse files

[PATCH] splice: add a SPLICE_F_MORE flag



This lets userspace indicate whether more data will be coming in a
subsequent splice call.
Signed-off-by: default avatarJens Axboe <axboe@suse.de>
parent 83f9135b
......@@ -354,6 +354,7 @@ static int pipe_to_sendpage(struct pipe_inode_info *info,
unsigned int offset;
ssize_t ret;
void *ptr;
int more;
/*
* sub-optimal, but we are limited by the pipe ->map. we don't
......@@ -366,9 +367,9 @@ static int pipe_to_sendpage(struct pipe_inode_info *info,
return PTR_ERR(ptr);
offset = pos & ~PAGE_CACHE_MASK;
more = (sd->flags & SPLICE_F_MORE) || sd->len < sd->total_len;
ret = file->f_op->sendpage(file, buf->page, offset, sd->len, &pos,
sd->len < sd->total_len);
ret = file->f_op->sendpage(file, buf->page, offset, sd->len, &pos,more);
buf->ops->unmap(info, buf);
if (ret == sd->len)
......
......@@ -62,5 +62,6 @@ void free_pipe_info(struct inode* inode);
#define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */
/* we may still block on the fd we splice */
/* from/to, of course */
#define SPLICE_F_MORE (0x04) /* expect more data */
#endif
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