hugetlb: abort a hugepage pool resize if a signal is pending
commit536240f2bde98216feac87b4891d19a536b8884a
authorMel Gorman <mel@csn.ul.ie>
Tue, 15 Dec 2009 01:59:56 +0000 (14 17:59 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 15 Dec 2009 16:53:24 +0000 (15 08:53 -0800)
treee4755bb36c232262a2ebadb055d8947acb39b672
parent6927c1dd93fc982140f3a3742ac4b224cd3e02b2
hugetlb: abort a hugepage pool resize if a signal is pending

If a user asks for a hugepage pool resize but specified a large number,
the machine can begin trashing.  In response, they might hit ctrl-c but
signals are ignored and the pool resize continues until it fails an
allocation.  This can take a considerable amount of time so this patch
aborts a pool resize if a signal is pending.

Suggested by Dave Hansen.

Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Cc: Dave Hansen <dave@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/hugetlb.c