twx-linux

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T

Chen Gang a904ebe92a mm: add PHYS_PFN, use it in __phys_to_pfn()

commit 8f235d1a3e upstream.

__phys_to_pfn and __pfn_to_phys are symmetric, PHYS_PFN and PFN_PHYS are
semmetric:

 - y = (phys_addr_t)x << PAGE_SHIFT

 - y >> PAGE_SHIFT = (phys_add_t)x

 - (unsigned long)(y >> PAGE_SHIFT) = x

[akpm@linux-foundation.org: use macro arg name `x']
[arnd@arndb.de: include linux/pfn.h for PHYS_PFN definition]
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Marcin Nowakowski <marcin.nowakowski@mips.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2017-11-21 09:21:22 +01:00

acpi

…

asm-generic

mm: add PHYS_PFN, use it in __phys_to_pfn()

2017-11-21 09:21:22 +01:00

clocksource

…

crypto

crypto: ahash - Fix EINPROGRESS notification callback

2017-04-21 09:30:06 +02:00

drm