diff options
Diffstat (limited to 'drivers/block/loop.c')
| -rw-r--r-- | drivers/block/loop.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/block/loop.c b/drivers/block/loop.c index d1f168b73634..c4fd1e45ce1e 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -75,6 +75,7 @@ #include <linux/sysfs.h> #include <linux/miscdevice.h> #include <linux/falloc.h> +#include <linux/uio.h> #include "loop.h" #include <asm/uaccess.h> @@ -229,13 +230,14 @@ lo_do_transfer(struct loop_device *lo, int cmd, static int __do_lo_send_write(struct file *file, u8 *buf, const int len, loff_t pos) { + struct kvec kvec = {.iov_base = buf, .iov_len = len}; + struct iov_iter from; ssize_t bw; - mm_segment_t old_fs = get_fs(); + + iov_iter_kvec(&from, ITER_KVEC | WRITE, &kvec, 1, len); file_start_write(file); - set_fs(get_ds()); - bw = file->f_op->write(file, buf, len, &pos); - set_fs(old_fs); + bw = vfs_iter_write(file, &from, &pos); file_end_write(file); if (likely(bw == len)) return 0; @@ -767,7 +769,7 @@ static int loop_set_fd(struct loop_device *lo, fmode_t mode, goto out_putf; if (!(file->f_mode & FMODE_WRITE) || !(mode & FMODE_WRITE) || - !file->f_op->write) + !file->f_op->write_iter) lo_flags |= LO_FLAGS_READ_ONLY; lo_blocksize = S_ISBLK(inode->i_mode) ? |