ext4: Use direct_IO_no_locking in ext4 dio read. Signed-off-by: Jiaying Zhang <jiayingz@xxxxxxxxxx> diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 9ee3550..44d2e19 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -3395,7 +3395,15 @@ static ssize_t ext4_ind_direct_IO(int rw, struct kiocb *iocb, } retry: - ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov, + if (rw == READ && test_opt(inode->i_sb, DIOREAD_NOLOCK) + && (EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL)) + ret = blockdev_direct_IO_no_locking(rw, iocb, inode, + inode->i_sb->s_bdev, iov, + offset, nr_segs, + ext4_get_block, NULL); + else + ret = blockdev_direct_IO(rw, iocb, inode, + inode->i_sb->s_bdev, iov, offset, nr_segs, ext4_get_block, NULL); if (ret == -ENOSPC && ext4_should_retry_alloc(inode->i_sb, &retries)) -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html