diff options
Diffstat (limited to 'fs/exfat/file.c')
| -rw-r--r-- | fs/exfat/file.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/exfat/file.c b/fs/exfat/file.c index a25d7eb789f4..fb38769c3e39 100644 --- a/fs/exfat/file.c +++ b/fs/exfat/file.c @@ -584,6 +584,16 @@ static ssize_t exfat_file_write_iter(struct kiocb *iocb, struct iov_iter *iter) if (ret < 0) goto unlock; + if (iocb->ki_flags & IOCB_DIRECT) { + unsigned long align = pos | iov_iter_alignment(iter); + + if (!IS_ALIGNED(align, i_blocksize(inode)) && + !IS_ALIGNED(align, bdev_logical_block_size(inode->i_sb->s_bdev))) { + ret = -EINVAL; + goto unlock; + } + } + if (pos > valid_size) { ret = exfat_extend_valid_size(file, pos); if (ret < 0 && ret != -ENOSPC) { |