}
}
-static bool io_bdev_nowait(struct block_device *bdev)
-{
- return !bdev || bdev_nowait(bdev);
-}
-
/*
* If we tracked the file through the SCM inflight mechanism, we could support
* any file. For now, just ensure that anything potentially problematic is done
*/
static bool __io_file_supports_nowait(struct file *file, umode_t mode)
{
- if (S_ISBLK(mode)) {
- if (IS_ENABLED(CONFIG_BLOCK) &&
- io_bdev_nowait(I_BDEV(file->f_mapping->host)))
- return true;
- return false;
- }
- if (S_ISSOCK(mode))
- return true;
- if (S_ISREG(mode)) {
- if (IS_ENABLED(CONFIG_BLOCK) &&
- io_bdev_nowait(file->f_inode->i_sb->s_bdev) &&
- !io_is_uring_fops(file))
- return true;
- return false;
- }
-
/* any ->read/write should understand O_NONBLOCK */
if (file->f_flags & O_NONBLOCK)
return true;