diff options
| -rw-r--r-- | fs/pipe.c | 11 | ||||
| -rw-r--r-- | fs/splice.c | 4 |
2 files changed, 12 insertions, 3 deletions
diff --git a/fs/pipe.c b/fs/pipe.c index 7fefb10db8d..5a369273c51 100644 --- a/fs/pipe.c +++ b/fs/pipe.c @@ -127,8 +127,15 @@ static void anon_pipe_buf_unmap(struct pipe_inode_info *pipe, static int anon_pipe_buf_steal(struct pipe_inode_info *pipe, struct pipe_buffer *buf) { - buf->flags |= PIPE_BUF_FLAG_STOLEN; - return 0; + struct page *page = buf->page; + + if (page_count(page) == 1) { + buf->flags |= PIPE_BUF_FLAG_STOLEN; + lock_page(page); + return 0; + } + + return 1; } static void anon_pipe_buf_get(struct pipe_inode_info *info, diff --git a/fs/splice.c b/fs/splice.c index a46ddd28561..9df28d30efa 100644 --- a/fs/splice.c +++ b/fs/splice.c @@ -599,8 +599,10 @@ static int pipe_to_file(struct pipe_inode_info *info, struct pipe_buffer *buf, goto find_page; page = buf->page; - if (add_to_page_cache(page, mapping, index, gfp_mask)) + if (add_to_page_cache(page, mapping, index, gfp_mask)) { + unlock_page(page); goto find_page; + } if (!(buf->flags & PIPE_BUF_FLAG_LRU)) lru_cache_add(page); |