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Viewing changes to include/linux/page-flags.h

  • Committer: Package Import Robot
  • Author(s): Ben Hutchings
  • Date: 2014-02-02 16:57:49 UTC
  • mfrom: (1.1.10) (0.1.21 sid)
  • Revision ID: package-import@ubuntu.com-20140202165749-tw94o9t1t0a8txk6
Tags: 3.13-1~exp2
Merge changes from sid up to 3.12.6-3

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include/linux/page-flags.h
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 * System with lots of page flags available. This allows separate
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 * flags for PageHead() and PageTail() checks of compound pages so that bit
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 * tests can be used in performance sensitive paths. PageCompound is
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 * generally not used in hot code paths.
 
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 * generally not used in hot code paths except arch/powerpc/mm/init_64.c
 
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 * and arch/powerpc/kvm/book3s_64_vio_hv.c which use it to detect huge pages
 
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 * and avoid handling those in real mode.
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 */
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__PAGEFLAG(Head, head) CLEARPAGEFLAG(Head, head)
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__PAGEFLAG(Tail, tail)