[PATCH] hugetlb: add comment explaining reasons for Bus Errors
authorChristoph Lameter <clameter@engr.sgi.com>
Sun, 5 Feb 2006 07:27:55 +0000 (23:27 -0800)
committerLinus Torvalds <torvalds@g5.osdl.org>
Sun, 5 Feb 2006 19:06:53 +0000 (11:06 -0800)
commit64b4a954b03a1153fb8ae38d6ffbd991e01a1e80
tree0436a6f23e46d9fcb6caf5b1216fe212be3fbc3f
parentfe1dcbc4f311c2e6c23b33c0fa8572461618ab3e
[PATCH] hugetlb: add comment explaining reasons for Bus Errors

I just spent some time researching a Bus Error.  Turns out that the huge
page fault handler can return VM_FAULT_SIGBUS for various conditions where
no huge page is available.

Add a note explaining the reasoning in the source.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Acked-by: William Lee Irwin III <wli@holomorphy.com>
Cc: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
mm/hugetlb.c