linux/include/asm-generic
Chen Gang 8f235d1a3e mm: add PHYS_PFN, use it in __phys_to_pfn()
__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>
2016-01-14 16:00:49 -08:00
..
2015-07-27 14:06:24 +02:00
2014-04-07 16:36:10 -07:00
2011-03-17 09:19:04 +08:00
2015-05-12 10:46:53 +02:00
2010-10-07 14:08:55 +01:00
2010-10-07 14:08:55 +01:00
2012-10-02 18:01:56 +01:00
2011-07-26 16:49:47 -07:00
2011-07-26 16:49:47 -07:00
2012-12-09 23:14:14 +01:00
2014-11-23 13:01:47 +01:00
2013-01-03 15:57:16 -08:00
2015-08-25 09:59:45 +02:00
2015-11-10 16:32:11 -08:00
2014-06-17 19:12:40 -04:00
2014-05-15 00:32:09 +01:00
2015-09-05 13:19:09 +02:00
2013-11-09 00:16:29 -05:00
2012-11-29 00:01:23 -05:00
2013-02-14 09:21:15 -05:00
2015-11-23 09:44:58 +01:00