Commit ba23855cdc89 ("btrfs-progs: send: use splice syscall instead of
read/write to transfer buffer") changed the send implementation to use
splice(). The old read/write implementation hasn't be used for at least
3 years, it's time to remove it.
Signed-off-by: Nikolay Borisov <nborisov@xxxxxxxx>
---
cmds-send.c | 61 -----------------------------------------------------
1 file changed, 61 deletions(-)
diff --git a/cmds-send.c b/cmds-send.c
index 6496d8e39bbf..1735c35dca74 100644
--- a/cmds-send.c
+++ b/cmds-send.c
@@ -207,67 +207,6 @@ static int add_clone_source(struct btrfs_send *sctx, u64 root_id)
return 0;
}
-#if 0
-static int write_buf(int fd, const char *buf, size_t size)
-{
- int ret;
- size_t pos = 0;
-
- while (pos < size) {
- ssize_t wbytes;
-
- wbytes = write(fd, buf + pos, size - pos);
- if (wbytes < 0) {
- ret = -errno;
- error("failed to dump stream: %s", strerror(-ret));
- goto out;
- }
- if (!wbytes) {
- ret = -EIO;
- error("failed to dump stream: %s", strerror(-ret));
- goto out;
- }
- pos += wbytes;
- }
- ret = 0;
-
-out:
- return ret;
-}
-
-static void* read_sent_data_copy(void *arg)
-{
- int ret;
- struct btrfs_send *sctx = (struct btrfs_send*)arg;
- char buf[SEND_BUFFER_SIZE];
-
- while (1) {
- ssize_t rbytes;
-
- rbytes = read(sctx->send_fd, buf, sizeof(buf));
- if (rbytes < 0) {
- ret = -errno;
- error("failed to read stream from kernel: %s",
- strerror(-ret));
- goto out;
- }
- if (!rbytes) {
- ret = 0;
- goto out;
- }
- ret = write_buf(sctx->dump_fd, buf, rbytes);
- if (ret < 0)
- goto out;
- }
-
-out:
- if (ret < 0)
- exit(-ret);
-
- return ERR_PTR(ret);
-}
-#endif
-
static void *read_sent_data(void *arg)
{
int ret;
--
2.17.1
