diff options
Diffstat (limited to 'fs/splice.c')
| -rw-r--r-- | fs/splice.c | 31 |
1 files changed, 14 insertions, 17 deletions
diff --git a/fs/splice.c b/fs/splice.c index 7968da96bebb..476024bb6546 100644 --- a/fs/splice.c +++ b/fs/splice.c @@ -32,7 +32,6 @@ #include <linux/gfp.h> #include <linux/socket.h> #include <linux/compat.h> -#include <linux/aio.h> #include "internal.h" /* @@ -524,6 +523,9 @@ ssize_t generic_file_splice_read(struct file *in, loff_t *ppos, loff_t isize, left; int ret; + if (IS_DAX(in->f_mapping->host)) + return default_file_splice_read(in, ppos, pipe, len, flags); + isize = i_size_read(in->f_mapping->host); if (unlikely(*ppos >= isize)) return 0; @@ -1534,34 +1536,29 @@ static long vmsplice_to_user(struct file *file, const struct iovec __user *uiov, struct iovec iovstack[UIO_FASTIOV]; struct iovec *iov = iovstack; struct iov_iter iter; - ssize_t count; pipe = get_pipe_info(file); if (!pipe) return -EBADF; - ret = rw_copy_check_uvector(READ, uiov, nr_segs, - ARRAY_SIZE(iovstack), iovstack, &iov); - if (ret <= 0) - goto out; - - count = ret; - iov_iter_init(&iter, READ, iov, nr_segs, count); + ret = import_iovec(READ, uiov, nr_segs, + ARRAY_SIZE(iovstack), &iov, &iter); + if (ret < 0) + return ret; + sd.total_len = iov_iter_count(&iter); sd.len = 0; - sd.total_len = count; sd.flags = flags; sd.u.data = &iter; sd.pos = 0; - pipe_lock(pipe); - ret = __splice_from_pipe(pipe, &sd, pipe_to_user); - pipe_unlock(pipe); - -out: - if (iov != iovstack) - kfree(iov); + if (sd.total_len) { + pipe_lock(pipe); + ret = __splice_from_pipe(pipe, &sd, pipe_to_user); + pipe_unlock(pipe); + } + kfree(iov); return ret; } |