tree de3ec1af9c309dba0faf2e662ba49f651a566e82
parent 9817626e722a5e5699cf38f5d3a4c9851e054436
author Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> 1349738988 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1349767346 +0900

thp: merge page pre-alloc in khugepaged_loop into khugepaged_do_scan

There are two pre-alloc operations in these two function, the different is:
- it allows to sleep if page alloc fail in khugepaged_loop
- it exits immediately if page alloc fail in khugepaged_do_scan

Actually, in khugepaged_do_scan, we can allow the pre-alloc to sleep on
the first failure, then the operation in khugepaged_loop can be removed

Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>