diff options
Diffstat (limited to 'fs/block_dev.c')
| -rw-r--r-- | fs/block_dev.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c index 6e3de63c3055..bcd7f97beab9 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -1597,6 +1597,16 @@ ssize_t blkdev_write_iter(struct kiocb *iocb, struct iov_iter *from) struct file *file = iocb->ki_filp; struct blk_plug plug; ssize_t ret; + size_t count = iov_iter_count(from); + + ret = generic_write_checks(file, &iocb->ki_pos, &count, 1); + if (ret) + return ret; + + if (count == 0) + return 0; + + iov_iter_truncate(from, count); blk_start_plug(&plug); ret = __generic_file_write_iter(iocb, from); |