From 4fb23e439ce09157d64b89a21061b9fc08f2b495 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Dec 2006 16:01:50 -0800 Subject: [PATCH] Fix up mm/mincore.c error value cases Hugh Dickins correctly points out that mincore() is actually _supposed_ to fail on an unmapped hole in the user address space, rather than return valid ("empty") information about the hole. This just simplifies the problem further (I had been misled by our previous confusing and complicated way of doing mincore()). Also, in the unlikely situation that we can't allocate a temporary kernel buffer, we should actually return EAGAIN, not ENOMEM, to keep the "unmapped hole" and "allocation failure" error cases separate. Finally, add a comment about our stupid historical lack of support for anonymous mappings. I'll fix that if somebody reminds me after 2.6.20 is out. Acked-by: Hugh Dickins Signed-off-by: Linus Torvalds --- Reading git-format-patch failed