[tip:x86/mm] x86, mm: Separate x86_64 vmalloc_sync_all() into separate functions

[tip-bot for Haicheng Li]

Commit-ID:  7b61b1ccb1a84c3391360ac94c908bfbbb35299c
Gitweb:     http://git.kernel.org/tip/7b61b1ccb1a84c3391360ac94c908bfbbb35299c
Author:     Haicheng Li <haicheng.li@xxxxxxxxxxxxxxx>
AuthorDate: Wed, 19 May 2010 17:42:14 +0800
Committer:  H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
CommitDate: Wed, 25 Aug 2010 13:47:14 -0700

x86, mm: Separate x86_64 vmalloc_sync_all() into separate functions

No behavior change.

Move some of vmalloc_sync_all() code into a new function
sync_global_pgds() that will be useful for memory hotplug.

Signed-off-by: Haicheng Li <haicheng.li@xxxxxxxxxxxxxxx>
LKML-Reference: <4C6E4ECD.1090607@xxxxxxxxxxxxxxx>
Reviewed-by: Wu Fengguang <fengguang.wu@xxxxxxxxx>
Reviewed-by: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
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