[RFC -next 02/10] splice: Add helper that passes through splice_desc
From: Joe Damato <hidden>
Date: 2025-03-19 00:15:40
Also in:
linux-arch, linux-fsdevel, linux-kselftest, lkml, netdev
Subsystem:
filesystems (vfs and infrastructure), the rest · Maintainers:
Alexander Viro, Christian Brauner, Linus Torvalds
Add do_splice_from_sd which takes splice_desc as an argument. This helper is just a wrapper around splice_write but will be extended. Use the helper from existing splice code. Signed-off-by: Joe Damato <redacted> --- fs/splice.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/fs/splice.c b/fs/splice.c
index 2898fa1e9e63..9575074a1296 100644
--- a/fs/splice.c
+++ b/fs/splice.c@@ -941,6 +941,15 @@ static ssize_t do_splice_from(struct pipe_inode_info *pipe, struct file *out, return out->f_op->splice_write(pipe, out, ppos, len, flags); } +static ssize_t do_splice_from_sd(struct pipe_inode_info *pipe, struct file *out, + struct splice_desc *sd) +{ + if (unlikely(!out->f_op->splice_write)) + return warn_unsupported(out, "write"); + return out->f_op->splice_write(pipe, out, sd->opos, sd->total_len, + sd->flags); +} + /* * Indicate to the caller that there was a premature EOF when reading from the * source and the caller didn't indicate they would be sending more data after
@@ -1161,7 +1170,7 @@ static int direct_splice_actor(struct pipe_inode_info *pipe, long ret; file_start_write(file); - ret = do_splice_from(pipe, file, sd->opos, sd->total_len, sd->flags); + ret = do_splice_from_sd(pipe, file, sd); file_end_write(file); return ret; }
@@ -1171,7 +1180,7 @@ static int splice_file_range_actor(struct pipe_inode_info *pipe, { struct file *file = sd->u.file; - return do_splice_from(pipe, file, sd->opos, sd->total_len, sd->flags); + return do_splice_from_sd(pipe, file, sd); } static void direct_file_splice_eof(struct splice_desc *sd)
--
2.43.0