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(parent: fcf4d82) | patch
mm: hugetlb: bail out unmapping after serving reference page
authorHillf Danton <dhillf@gmail.com>
Wed, 21 Mar 2012 23:34:03 +0000 (16:34 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Thu, 22 Mar 2012 00:54:57 +0000 (17:54 -0700)
commit9e81130b7ce23050335b1197bb51743517b5b9d0
tree6a359131ad2c36ca9e50f0c96a17ef755ad7e168tree | snapshot
parentfcf4d8212a8f38334679e82ff14532b908b4b451commit | diff
mm: hugetlb: bail out unmapping after serving reference page

When unmapping a given VM range, we could bail out if a reference page is
supplied and is unmapped, which is a minor optimization.

Signed-off-by: Hillf Danton <dhillf@gmail.com>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/hugetlb.c diff | blob | history
Port of xen3.3 xenlinux code to Ubuntu packaged SUSE kernel (3.2.10)