mm: enumerate all gfp flags

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Introduce GFP bits enumeration to let compiler track the number of used
bits (which depends on the config options) instead of hardcoding them. 
That simplifies __GFP_BITS_SHIFT calculation.

Link: https://lkml.kernel.org/r/20240224015800.2569851-1-surenb@google.com
Suggested-by: Petr Tesařík <petr@tesarici.cz>
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Kent Overstreet <kent.overstreet@linux.dev>
Cc: Petr Tesarik <petr@tesarici.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

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Suren Baghdasaryan 2024-02-23 17:58:00 -08:00 • committed by Andrew Morton

parent 2864f3d0f5

commit 772dd03427

1 changed files with 62 additions and 28 deletions

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94

include/linux/gfp_types.h

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