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authorDavid Howells <dhowells@redhat.com>2023-05-22 16:49:52 +0300
committerJens Axboe <axboe@kernel.dk>2023-05-24 17:42:16 +0300
commit6a3f30b8bdb23842aff5eea65b6a7693c49f5506 (patch)
tree31411886ee54c28085214fe62032f6b034e4af48 /include/linux/splice.h
parente69f37bce1b412161e11715adde30dadba0268a2 (diff)
downloadlinux-6a3f30b8bdb23842aff5eea65b6a7693c49f5506.tar.xz
splice: Make do_splice_to() generic and export it
Rename do_splice_to() to vfs_splice_read() and export it so that it can be used as a helper when calling down to a lower layer filesystem as it performs all the necessary checks[1]. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Christian Brauner <brauner@kernel.org> cc: Miklos Szeredi <miklos@szeredi.hu> cc: Jens Axboe <axboe@kernel.dk> cc: Al Viro <viro@zeniv.linux.org.uk> cc: John Hubbard <jhubbard@nvidia.com> cc: David Hildenbrand <david@redhat.com> cc: Matthew Wilcox <willy@infradead.org> cc: linux-unionfs@vger.kernel.org cc: linux-block@vger.kernel.org cc: linux-fsdevel@vger.kernel.org cc: linux-mm@kvack.org Link: https://lore.kernel.org/r/CAJfpeguGksS3sCigmRi9hJdUec8qtM9f+_9jC1rJhsXT+dV01w@mail.gmail.com/ [1] Link: https://lore.kernel.org/r/20230522135018.2742245-6-dhowells@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/splice.h')
-rw-r--r--include/linux/splice.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/splice.h b/include/linux/splice.h
index a55179fd60fc..8f052c3dae95 100644
--- a/include/linux/splice.h
+++ b/include/linux/splice.h
@@ -76,6 +76,9 @@ extern ssize_t splice_to_pipe(struct pipe_inode_info *,
struct splice_pipe_desc *);
extern ssize_t add_to_pipe(struct pipe_inode_info *,
struct pipe_buffer *);
+long vfs_splice_read(struct file *in, loff_t *ppos,
+ struct pipe_inode_info *pipe, size_t len,
+ unsigned int flags);
extern ssize_t splice_direct_to_actor(struct file *, struct splice_desc *,
splice_direct_actor *);
extern long do_splice(struct file *in, loff_t *off_in,