2019-05-19 13:08:20 +01:00
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2008-03-06 13:39:18 +09:00
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2005-04-16 15:20:36 -07:00
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2008-03-06 13:39:18 +09:00
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2005-04-16 15:20:36 -07:00
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2008-07-29 22:10:01 +09:00
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2005-04-16 15:20:36 -07:00
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2009-03-17 09:30:36 +09:00
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2005-04-16 15:20:36 -07:00
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2008-07-29 22:10:01 +09:00
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2005-04-16 15:20:36 -07:00
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2007-10-16 01:29:04 -07:00
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2008-07-29 22:10:01 +09:00
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2005-04-16 15:20:36 -07:00
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2007-08-10 13:00:48 -07:00
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2005-04-16 15:20:36 -07:00
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2012-12-21 13:07:39 -08:00
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2005-04-16 15:20:36 -07:00
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2012-12-21 13:07:39 -08:00
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2005-04-16 15:20:36 -07:00
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2019-06-07 14:38:07 +02:00
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2007-08-10 13:00:47 -07:00
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2005-04-16 15:20:36 -07:00
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2012-12-21 13:07:39 -08:00
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2005-04-16 15:20:36 -07:00
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2007-07-07 03:38:51 +09:00
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2005-04-16 15:20:36 -07:00
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2007-07-07 03:38:51 +09:00
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2005-04-16 15:20:36 -07:00
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2017-09-04 16:00:50 +02:00
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2005-04-16 15:20:36 -07:00
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2006-09-27 16:03:25 +09:00
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2005-04-16 15:20:36 -07:00
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2009-03-17 09:30:36 +09:00
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2005-04-16 15:20:36 -07:00
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2012-12-21 13:07:39 -08:00
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2005-04-16 15:20:36 -07:00
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2007-07-07 03:38:51 +09:00
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2005-04-16 15:20:36 -07:00
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2012-12-21 13:07:39 -08:00
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2005-04-16 15:20:36 -07:00
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2007-07-07 03:38:51 +09:00
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2005-04-16 15:20:36 -07:00
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2007-07-07 03:38:51 +09:00
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2005-04-16 15:20:36 -07:00
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2007-07-17 04:05:39 -07:00
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2005-04-16 15:20:36 -07:00
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2007-07-17 04:05:39 -07:00
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2005-04-16 15:20:36 -07:00
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2019-06-07 14:38:07 +02:00
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2019-06-07 14:38:07 +02:00
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2019-06-07 14:38:07 +02:00
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2005-04-16 15:20:36 -07:00
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2007-07-07 03:38:51 +09:00
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2005-04-16 15:20:36 -07:00
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2007-07-07 03:38:51 +09:00
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2005-04-16 15:20:36 -07:00
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2007-07-07 03:38:51 +09:00
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2005-04-16 15:20:36 -07:00
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2007-07-07 03:38:51 +09:00
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2005-04-16 15:20:36 -07:00
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2007-07-07 03:38:51 +09:00
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2005-04-16 15:20:36 -07:00
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2007-07-07 03:38:51 +09:00
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2005-04-16 15:20:36 -07:00
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2007-07-07 03:38:51 +09:00
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2005-04-16 15:20:36 -07:00
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2008-03-06 13:39:18 +09:00
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2005-04-16 15:20:36 -07:00
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2007-07-07 03:38:51 +09:00
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2005-04-16 15:20:36 -07:00
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2007-07-07 03:38:51 +09:00
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2005-04-16 15:20:36 -07:00
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2007-07-07 03:38:51 +09:00
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2005-04-16 15:20:36 -07:00
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2007-07-07 03:38:51 +09:00
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2005-04-16 15:20:36 -07:00
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2007-07-07 03:38:51 +09:00
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2005-04-16 15:20:36 -07:00
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2007-08-10 13:00:48 -07:00
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2005-04-16 15:20:36 -07:00
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2007-07-07 03:38:51 +09:00
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2005-04-16 15:20:36 -07:00
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2019-06-07 14:38:07 +02:00
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2005-04-16 15:20:36 -07:00
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2009-03-17 09:30:36 +09:00
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2007-05-08 00:39:02 -07:00
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2005-04-16 15:20:36 -07:00
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treewide: kmalloc() -> kmalloc_array()
The kmalloc() function has a 2-factor argument form, kmalloc_array(). This
patch replaces cases of:
kmalloc(a * b, gfp)
with:
kmalloc_array(a * b, gfp)
as well as handling cases of:
kmalloc(a * b * c, gfp)
with:
kmalloc(array3_size(a, b, c), gfp)
as it's slightly less ugly than:
kmalloc_array(array_size(a, b), c, gfp)
This does, however, attempt to ignore constant size factors like:
kmalloc(4 * 1024, gfp)
though any constants defined via macros get caught up in the conversion.
Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.
The tools/ directory was manually excluded, since it has its own
implementation of kmalloc().
The Coccinelle script used for this was:
// Fix redundant parens around sizeof().
@@
type TYPE;
expression THING, E;
@@
(
kmalloc(
- (sizeof(TYPE)) * E
+ sizeof(TYPE) * E
, ...)
|
kmalloc(
- (sizeof(THING)) * E
+ sizeof(THING) * E
, ...)
)
// Drop single-byte sizes and redundant parens.
@@
expression COUNT;
typedef u8;
typedef __u8;
@@
(
kmalloc(
- sizeof(u8) * (COUNT)
+ COUNT
, ...)
|
kmalloc(
- sizeof(__u8) * (COUNT)
+ COUNT
, ...)
|
kmalloc(
- sizeof(char) * (COUNT)
+ COUNT
, ...)
|
kmalloc(
- sizeof(unsigned char) * (COUNT)
+ COUNT
, ...)
|
kmalloc(
- sizeof(u8) * COUNT
+ COUNT
, ...)
|
kmalloc(
- sizeof(__u8) * COUNT
+ COUNT
, ...)
|
kmalloc(
- sizeof(char) * COUNT
+ COUNT
, ...)
|
kmalloc(
- sizeof(unsigned char) * COUNT
+ COUNT
, ...)
)
// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@
(
- kmalloc
+ kmalloc_array
(
- sizeof(TYPE) * (COUNT_ID)
+ COUNT_ID, sizeof(TYPE)
, ...)
|
- kmalloc
+ kmalloc_array
(
- sizeof(TYPE) * COUNT_ID
+ COUNT_ID, sizeof(TYPE)
, ...)
|
- kmalloc
+ kmalloc_array
(
- sizeof(TYPE) * (COUNT_CONST)
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- kmalloc
+ kmalloc_array
(
- sizeof(TYPE) * COUNT_CONST
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- kmalloc
+ kmalloc_array
(
- sizeof(THING) * (COUNT_ID)
+ COUNT_ID, sizeof(THING)
, ...)
|
- kmalloc
+ kmalloc_array
(
- sizeof(THING) * COUNT_ID
+ COUNT_ID, sizeof(THING)
, ...)
|
- kmalloc
+ kmalloc_array
(
- sizeof(THING) * (COUNT_CONST)
+ COUNT_CONST, sizeof(THING)
, ...)
|
- kmalloc
+ kmalloc_array
(
- sizeof(THING) * COUNT_CONST
+ COUNT_CONST, sizeof(THING)
, ...)
)
// 2-factor product, only identifiers.
@@
identifier SIZE, COUNT;
@@
- kmalloc
+ kmalloc_array
(
- SIZE * COUNT
+ COUNT, SIZE
, ...)
// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@
(
kmalloc(
- sizeof(TYPE) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kmalloc(
- sizeof(TYPE) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kmalloc(
- sizeof(TYPE) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kmalloc(
- sizeof(TYPE) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kmalloc(
- sizeof(THING) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kmalloc(
- sizeof(THING) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kmalloc(
- sizeof(THING) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kmalloc(
- sizeof(THING) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
)
// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@
(
kmalloc(
- sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
kmalloc(
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
kmalloc(
- sizeof(THING1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
kmalloc(
- sizeof(THING1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
kmalloc(
- sizeof(TYPE1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
|
kmalloc(
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
)
// 3-factor product, only identifiers, with redundant parens removed.
@@
identifier STRIDE, SIZE, COUNT;
@@
(
kmalloc(
- (COUNT) * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kmalloc(
- COUNT * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kmalloc(
- COUNT * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kmalloc(
- (COUNT) * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kmalloc(
- COUNT * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kmalloc(
- (COUNT) * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kmalloc(
- (COUNT) * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kmalloc(
- COUNT * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
)
// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression E1, E2, E3;
constant C1, C2, C3;
@@
(
kmalloc(C1 * C2 * C3, ...)
|
kmalloc(
- (E1) * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
|
kmalloc(
- (E1) * (E2) * E3
+ array3_size(E1, E2, E3)
, ...)
|
kmalloc(
- (E1) * (E2) * (E3)
+ array3_size(E1, E2, E3)
, ...)
|
kmalloc(
- E1 * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
)
// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@
(
kmalloc(sizeof(THING) * C2, ...)
|
kmalloc(sizeof(TYPE) * C2, ...)
|
kmalloc(C1 * C2 * C3, ...)
|
kmalloc(C1 * C2, ...)
|
- kmalloc
+ kmalloc_array
(
- sizeof(TYPE) * (E2)
+ E2, sizeof(TYPE)
, ...)
|
- kmalloc
+ kmalloc_array
(
- sizeof(TYPE) * E2
+ E2, sizeof(TYPE)
, ...)
|
- kmalloc
+ kmalloc_array
(
- sizeof(THING) * (E2)
+ E2, sizeof(THING)
, ...)
|
- kmalloc
+ kmalloc_array
(
- sizeof(THING) * E2
+ E2, sizeof(THING)
, ...)
|
- kmalloc
+ kmalloc_array
(
- (E1) * E2
+ E1, E2
, ...)
|
- kmalloc
+ kmalloc_array
(
- (E1) * (E2)
+ E1, E2
, ...)
|
- kmalloc
+ kmalloc_array
(
- E1 * E2
+ E1, E2
, ...)
)
Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-12 13:55:00 -07:00
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2005-04-16 15:20:36 -07:00
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2007-07-07 03:38:51 +09:00
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2019-05-13 17:17:11 -07:00
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2005-04-16 15:20:36 -07:00
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2007-07-07 03:38:51 +09:00
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2005-04-16 15:20:36 -07:00
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mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros
PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} macros were introduced *long* time
ago with promise that one day it will be possible to implement page
cache with bigger chunks than PAGE_SIZE.
This promise never materialized. And unlikely will.
We have many places where PAGE_CACHE_SIZE assumed to be equal to
PAGE_SIZE. And it's constant source of confusion on whether
PAGE_CACHE_* or PAGE_* constant should be used in a particular case,
especially on the border between fs and mm.
Global switching to PAGE_CACHE_SIZE != PAGE_SIZE would cause to much
breakage to be doable.
Let's stop pretending that pages in page cache are special. They are
not.
The changes are pretty straight-forward:
- <foo> << (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> <foo>;
- <foo> >> (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> <foo>;
- PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} -> PAGE_{SIZE,SHIFT,MASK,ALIGN};
- page_cache_get() -> get_page();
- page_cache_release() -> put_page();
This patch contains automated changes generated with coccinelle using
script below. For some reason, coccinelle doesn't patch header files.
I've called spatch for them manually.
The only adjustment after coccinelle is revert of changes to
PAGE_CAHCE_ALIGN definition: we are going to drop it later.
There are few places in the code where coccinelle didn't reach. I'll
fix them manually in a separate patch. Comments and documentation also
will be addressed with the separate patch.
virtual patch
@@
expression E;
@@
- E << (PAGE_CACHE_SHIFT - PAGE_SHIFT)
+ E
@@
expression E;
@@
- E >> (PAGE_CACHE_SHIFT - PAGE_SHIFT)
+ E
@@
@@
- PAGE_CACHE_SHIFT
+ PAGE_SHIFT
@@
@@
- PAGE_CACHE_SIZE
+ PAGE_SIZE
@@
@@
- PAGE_CACHE_MASK
+ PAGE_MASK
@@
expression E;
@@
- PAGE_CACHE_ALIGN(E)
+ PAGE_ALIGN(E)
@@
expression E;
@@
- page_cache_get(E)
+ get_page(E)
@@
expression E;
@@
- page_cache_release(E)
+ put_page(E)
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-04-01 15:29:47 +03:00
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2005-04-16 15:20:36 -07:00
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2007-07-07 03:38:51 +09:00
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2009-03-17 09:30:36 +09:00
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2005-04-16 15:20:36 -07:00
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2019-06-07 14:38:07 +02:00
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2019-06-21 13:04:38 +02:00
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2019-06-07 14:38:07 +02:00
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2019-06-21 13:04:38 +02:00
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2019-06-07 14:38:07 +02:00
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2019-06-07 14:38:07 +02:00
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2019-06-07 14:38:07 +02:00
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2019-06-07 14:38:07 +02:00
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2019-06-07 14:38:07 +02:00
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2019-06-07 14:38:07 +02:00
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2005-04-16 15:20:36 -07:00
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2019-06-07 14:38:07 +02:00
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2005-04-16 15:20:36 -07:00
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2007-07-07 03:38:51 +09:00
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2005-04-16 15:20:36 -07:00
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2019-06-07 14:38:07 +02:00
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2005-04-16 15:20:36 -07:00
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2006-09-27 16:03:25 +09:00
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2005-04-16 15:20:36 -07:00
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2007-08-10 13:00:47 -07:00
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2005-04-16 15:20:36 -07:00
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2007-08-10 13:00:48 -07:00
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2005-04-16 15:20:36 -07:00
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2013-09-19 18:35:55 -07:00
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2019-06-07 14:38:07 +02:00
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2005-04-16 15:20:36 -07:00
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2013-09-19 18:35:55 -07:00
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2005-04-16 15:20:36 -07:00
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2010-02-17 13:23:00 +09:00
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2005-04-16 15:20:36 -07:00
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2013-09-19 18:35:55 -07:00
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2005-04-16 15:20:36 -07:00
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2019-06-07 14:38:07 +02:00
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2005-04-16 15:20:36 -07:00
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2007-07-07 03:38:51 +09:00
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2005-04-16 15:20:36 -07:00
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2007-09-10 12:01:42 +09:00
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2005-04-16 15:20:36 -07:00
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2009-03-17 09:30:36 +09:00
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2005-04-16 15:20:36 -07:00
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2012-03-11 20:36:21 +01:00
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2005-04-16 15:20:36 -07:00
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2019-06-21 15:13:13 +02:00
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2005-04-16 15:20:36 -07:00
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2006-12-08 02:40:06 -08:00
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2019-06-07 14:38:07 +02:00
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2006-12-08 02:40:06 -08:00
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2012-03-11 20:36:21 +01:00
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2009-03-17 09:30:36 +09:00
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2005-04-16 15:20:36 -07:00
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2012-12-21 13:07:39 -08:00
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2005-04-16 15:20:36 -07:00
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2012-12-21 13:07:39 -08:00
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2005-04-16 15:20:36 -07:00
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2006-12-08 02:40:06 -08:00
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2019-06-07 14:38:07 +02:00
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2006-12-08 02:40:06 -08:00
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2005-04-16 15:20:36 -07:00
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2017-08-01 17:20:41 +02:00
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2005-04-16 15:20:36 -07:00
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2012-12-21 13:07:39 -08:00
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2005-04-16 15:20:36 -07:00
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2019-06-21 15:13:13 +02:00
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2005-04-16 15:20:36 -07:00
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2007-07-07 03:38:51 +09:00
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2005-04-16 15:20:36 -07:00
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2019-06-07 14:38:07 +02:00
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2005-04-16 15:20:36 -07:00
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2019-06-07 14:38:07 +02:00
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2005-04-16 15:20:36 -07:00
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2012-01-13 16:42:50 +09:00
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2005-04-16 15:20:36 -07:00
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2007-07-07 03:38:51 +09:00
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2005-04-16 15:20:36 -07:00
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2007-08-10 13:00:47 -07:00
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2019-06-28 12:30:08 +02:00
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2005-04-16 15:20:36 -07:00
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2007-08-10 13:00:47 -07:00
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2005-04-16 15:20:36 -07:00
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2007-07-07 03:38:51 +09:00
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2005-04-16 15:20:36 -07:00
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2007-08-10 13:00:47 -07:00
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2005-04-16 15:20:36 -07:00
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2007-07-07 03:38:51 +09:00
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2005-04-16 15:20:36 -07:00
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2007-07-07 03:38:51 +09:00
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2005-04-16 15:20:36 -07:00
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2007-08-10 13:00:47 -07:00
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2005-04-16 15:20:36 -07:00
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