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| author | Al Viro <viro@zeniv.linux.org.uk> | 2022-09-16 02:25:47 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2022-11-25 19:01:55 +0100 |
| commit | de4eda9de2d957ef2d6a8365a01e26a435e958cb (patch) | |
| tree | 49b0d60dedb65af7f0d3e874ee9c661e6b09697b /fs/splice.c | |
| parent | iov_iter: saner checks for attempt to copy to/from iterator (diff) | |
| download | linux-de4eda9de2d957ef2d6a8365a01e26a435e958cb.tar.xz linux-de4eda9de2d957ef2d6a8365a01e26a435e958cb.zip | |
use less confusing names for iov_iter direction initializers
READ/WRITE proved to be actively confusing - the meanings are
"data destination, as used with read(2)" and "data source, as
used with write(2)", but people keep interpreting those as
"we read data from it" and "we write data to it", i.e. exactly
the wrong way.
Call them ITER_DEST and ITER_SOURCE - at least that is harder
to misinterpret...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/splice.c')
| -rw-r--r-- | fs/splice.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/fs/splice.c b/fs/splice.c index 0878b852b355..5969b7a1d353 100644 --- a/fs/splice.c +++ b/fs/splice.c @@ -303,7 +303,7 @@ ssize_t generic_file_splice_read(struct file *in, loff_t *ppos, struct kiocb kiocb; int ret; - iov_iter_pipe(&to, READ, pipe, len); + iov_iter_pipe(&to, ITER_DEST, pipe, len); init_sync_kiocb(&kiocb, in); kiocb.ki_pos = *ppos; ret = call_read_iter(in, &kiocb, &to); @@ -682,7 +682,7 @@ iter_file_splice_write(struct pipe_inode_info *pipe, struct file *out, n++; } - iov_iter_bvec(&from, WRITE, array, n, sd.total_len - left); + iov_iter_bvec(&from, ITER_SOURCE, array, n, sd.total_len - left); ret = vfs_iter_write(out, &from, &sd.pos, 0); if (ret <= 0) break; @@ -1263,9 +1263,9 @@ static int vmsplice_type(struct fd f, int *type) if (!f.file) return -EBADF; if (f.file->f_mode & FMODE_WRITE) { - *type = WRITE; + *type = ITER_SOURCE; } else if (f.file->f_mode & FMODE_READ) { - *type = READ; + *type = ITER_DEST; } else { fdput(f); return -EBADF; @@ -1314,7 +1314,7 @@ SYSCALL_DEFINE4(vmsplice, int, fd, const struct iovec __user *, uiov, if (!iov_iter_count(&iter)) error = 0; - else if (iov_iter_rw(&iter) == WRITE) + else if (type == ITER_SOURCE) error = vmsplice_to_pipe(f.file, &iter, flags); else error = vmsplice_to_user(f.file, &iter, flags); |