diff options
| author | Amir Goldstein <amir73il@gmail.com> | 2023-12-12 11:44:37 +0200 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2023-12-12 16:20:02 +0100 |
| commit | 705bcfcbde38b9dd4db00cd3deb0b98bddb0dd4a (patch) | |
| tree | 77e4d1a15c6bc790be3f6d5b215a707d9b21d61b /fs/splice.c | |
| parent | 0f292086c22b43202daffc14b585d3b54b9a1206 (diff) | |
fs: use splice_copy_file_range() inline helper
generic_copy_file_range() is just a wrapper around splice_file_range(),
which caps the maximum copy length.
The only caller of splice_file_range(), namely __ceph_copy_file_range()
is already ready to cope with short copy.
Move the length capping into splice_file_range() and replace the exported
symbol generic_copy_file_range() with a simple inline helper.
Suggested-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/linux-fsdevel/20231204083849.GC32438@lst.de/
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Link: https://lore.kernel.org/r/20231212094440.250945-3-amir73il@gmail.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'fs/splice.c')
| -rw-r--r-- | fs/splice.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/fs/splice.c b/fs/splice.c index c39d1abf23c8..218e24b1ac40 100644 --- a/fs/splice.c +++ b/fs/splice.c @@ -1244,7 +1244,7 @@ EXPORT_SYMBOL(do_splice_direct); * @len: number of bytes to splice * * Description: - * For use by generic_copy_file_range() and ->copy_file_range() methods. + * For use by ->copy_file_range() methods. * Like do_splice_direct(), but vfs_copy_file_range() already holds * start_file_write() on @out file. * @@ -1255,8 +1255,9 @@ ssize_t splice_file_range(struct file *in, loff_t *ppos, struct file *out, { lockdep_assert(file_write_started(out)); - return do_splice_direct_actor(in, ppos, out, opos, len, 0, - splice_file_range_actor); + return do_splice_direct_actor(in, ppos, out, opos, + min_t(size_t, len, MAX_RW_COUNT), + 0, splice_file_range_actor); } EXPORT_SYMBOL(splice_file_range); |