f2fs_write_inode

[Changman Lee <cm224.lee@samsung.com>]

Hi guys,

I was wondering why f2fs_write_inode doesn't submit any I/O according to
wbc->sync_mode.
If you have any idea, answer to my questions, please.

And at f2fs_sync_file,

	if (need_cp) {

Q: We've already called sync_fs. Is there any scenario like below ?
I refered to 354a3399dc6f7e556d04e1c731cd50e08eeb44bd but I can't guess the situation.

		if (file_wrong_pino(inode) && inode->i_nlink == 1 &&
					get_parent_ino(inode, &pino)) {
			fi->i_pino = pino;
			file_got_pino(inode);
			up_write(&fi->i_sem);
			mark_inode_dirty_sync(inode);

Q: Update but no write I/O. How to recover after SPO ?

			ret = f2fs_write_inode(inode, NULL);
			if (ret)
				goto out;
		} else {
			up_write(&fi->i_sem);
		}
	} else {

~ snip ~

out:
	return ret;


Regards,
Changman

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