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Commit 038a07a5 authored by Mike Rapoport's avatar Mike Rapoport Committed by Linus Torvalds
Browse files

docs/core-api: mm-api: add section about GFP flags 

Link: http://lkml.kernel.org/r/1532626360-16650-8-git-send-email-rppt@linux.vnet.ibm.com


Signed-off-by: default avatarMike Rapoport <rppt@linux.vnet.ibm.com>
Reviewed-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 263fade5

Documentation/core-api/mm-api.rst

+21 −0
Original line number Diff line number Diff line
@@ -14,6 +14,27 @@ User Space Memory Access 
.. kernel-doc:: mm/util.c

   :functions: get_user_pages_fast



Memory Allocation Controls

==========================



Functions which need to allocate memory often use GFP flags to express

how that memory should be allocated. The GFP acronym stands for "get

free pages", the underlying memory allocation function. Not every GFP

flag is allowed to every function which may allocate memory. Most

users will want to use a plain ``GFP_KERNEL``.



.. kernel-doc:: include/linux/gfp.h

   :doc: Page mobility and placement hints



.. kernel-doc:: include/linux/gfp.h

   :doc: Watermark modifiers



.. kernel-doc:: include/linux/gfp.h

   :doc: Reclaim modifiers



.. kernel-doc:: include/linux/gfp.h

   :doc: Common combinations



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