From: Zhang Yanfei <zhangyanfei@cn.fujitsu.com>
Date: Wed, 3 Jul 2013 22:04:47 +0000 (-0700)
Subject: mm, vmalloc: only call setup_vmalloc_vm() only in __get_vm_area_node()
X-Git-Tag: omap-for-v3.11/fixes-for-merge-window~17^2~269
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d82b1d85760a8344d06272da67f0684243235fac;p=pandora-kernel.git

mm, vmalloc: only call setup_vmalloc_vm() only in __get_vm_area_node()

Now for insert_vmalloc_vm, it only calls the two functions:

 - setup_vmalloc_vm: fill vm_struct and vmap_area instances
 - clear_vm_unlist: clear VM_UNLIST bit in vm_struct->flags

So in __get_vm_area_node(), if VM_UNLIST bit unset in flags, that is the
else branch here, we don't need to clear VM_UNLIST bit for vm->flags since
this bit is obviously not set.  That is to say, we could only call
setup_vmalloc_vm instead of insert_vmalloc_vm here.  And then we could
even remove the if test here.

Signed-off-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com>
Acked-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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