diff options
| -rw-r--r-- | fs/fuse/dev.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c index 2b2d1b755544..3c9caafca9e2 100644 --- a/fs/fuse/dev.c +++ b/fs/fuse/dev.c @@ -2107,7 +2107,7 @@ static ssize_t fuse_dev_splice_write(struct pipe_inode_info *pipe, struct file *out, loff_t *ppos, size_t len, unsigned int flags) { - unsigned int head, tail, mask, count; + unsigned int head, tail, count; unsigned nbuf; unsigned idx; struct pipe_buffer *bufs; @@ -2124,8 +2124,7 @@ static ssize_t fuse_dev_splice_write(struct pipe_inode_info *pipe, head = pipe->head; tail = pipe->tail; - mask = pipe->ring_size - 1; - count = head - tail; + count = pipe_occupancy(head, tail); bufs = kvmalloc_array(count, sizeof(struct pipe_buffer), GFP_KERNEL); if (!bufs) { @@ -2135,8 +2134,8 @@ static ssize_t fuse_dev_splice_write(struct pipe_inode_info *pipe, nbuf = 0; rem = 0; - for (idx = tail; idx != head && rem < len; idx++) - rem += pipe->bufs[idx & mask].len; + for (idx = tail; !pipe_empty(head, idx) && rem < len; idx++) + rem += pipe_buf(pipe, idx)->len; ret = -EINVAL; if (rem < len) @@ -2147,10 +2146,10 @@ static ssize_t fuse_dev_splice_write(struct pipe_inode_info *pipe, struct pipe_buffer *ibuf; struct pipe_buffer *obuf; - if (WARN_ON(nbuf >= count || tail == head)) + if (WARN_ON(nbuf >= count || pipe_empty(head, tail))) goto out_free; - ibuf = &pipe->bufs[tail & mask]; + ibuf = pipe_buf(pipe, tail); obuf = &bufs[nbuf]; if (rem >= ibuf->len) { |