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authorNishanth Aravamudan <nacc@us.ibm.com>2008-02-08 04:18:18 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-08 09:22:23 -0800
commita3d0c6aa1bb342b9b2c7b123b52ac2f48a4d4d0a (patch)
tree0c6766dd2add1f08c6153769c655e46ddff82a42 /init
parentac74c00e499ed276a965e5b5600667d5dc04a84a (diff)
downloadlinux-linaro-a3d0c6aa1bb342b9b2c7b123b52ac2f48a4d4d0a.tar.gz
hugetlb: add locking for overcommit sysctl
When I replaced hugetlb_dynamic_pool with nr_overcommit_hugepages I used proc_doulongvec_minmax() directly. However, hugetlb.c's locking rules require that all counter modifications occur under the hugetlb_lock. Add a callback into the hugetlb code similar to the one for nr_hugepages. Grab the lock around the manipulation of nr_overcommit_hugepages in proc_doulongvec_minmax(). Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com> Acked-by: Adam Litke <agl@us.ibm.com> Cc: David Gibson <david@gibson.dropbear.id.au> Cc: William Lee Irwin III <wli@holomorphy.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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