ubifs: Add comment on c->commit_sem



Every single time I come across that code, I get confused
because it looks like a possible dead lock.
Help myself by adding a comment.

Signed-off-by: Richard Weinberger <richard@nod.at>

parent 7e5471ce

fs/ubifs/journal.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -317,6 +317,7 @@ static int make_reservation(struct ubifs_info *c, int jhead, int len)
		down_read(&c->commit_sem);
		err = reserve_space(c, jhead, len);
		if (!err)
		/* c->commit_sem will get released via finish_reservation(). */
		return 0;
		up_read(&c->commit_sem);