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| author | Jens Axboe <axboe@suse.de> | 2006-04-02 23:05:41 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@suse.de> | 2006-04-02 23:05:41 +0200 |
| commit | b2b39fa478db6db89b7ccafb0649973845b0eb75 (patch) | |
| tree | 784d85b94fb634e3b33dfd3f1153c98580cfac15 | |
| parent | 83f9135bddffded9f1716519b6c147bcf046c87e (diff) | |
| download | kernel_samsung_smdk4412-b2b39fa478db6db89b7ccafb0649973845b0eb75.tar.gz kernel_samsung_smdk4412-b2b39fa478db6db89b7ccafb0649973845b0eb75.tar.bz2 kernel_samsung_smdk4412-b2b39fa478db6db89b7ccafb0649973845b0eb75.zip | |
[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: Jens Axboe <axboe@suse.de>
| -rw-r--r-- | fs/splice.c | 5 | ||||
| -rw-r--r-- | include/linux/pipe_fs_i.h | 1 |
2 files changed, 4 insertions, 2 deletions
diff --git a/fs/splice.c b/fs/splice.c index 34591924c78..e8454455894 100644 --- a/fs/splice.c +++ b/fs/splice.c @@ -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) diff --git a/include/linux/pipe_fs_i.h b/include/linux/pipe_fs_i.h index 32865004751..70ae9332ec1 100644 --- a/include/linux/pipe_fs_i.h +++ b/include/linux/pipe_fs_i.h @@ -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 |