bianbu-repo-mirror/bianbu-linux-6.6
1
0
Fork 0
mirror of https://gitee.com/bianbu-linux/linux-6.6 synced 2025-04-26 14:17:26 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

block: remove CONFIG_LBDAF

Browse source 
Currently support for 64-bit sector_t and blkcnt_t is optional on 32-bit
architectures.  These types are required to support block device and/or
file sizes larger than 2 TiB, and have generally defaulted to on for
a long time.  Enabling the option only increases the i386 tinyconfig
size by 145 bytes, and many data structures already always use
64-bit values for their in-core and on-disk data structures anyway,
so there should not be a large change in dynamic memory usage either.

Dropping this option removes a somewhat weird non-default config that
has cause various bugs or compiler warnings when actually used.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2019-04-05 18:08:59 +02:00 • committed by Jens Axboe
parent 75199aa526
commit 72deb455b5
61 changed files with 52 additions and 250 deletions
Download patch file Download diff file Expand all files Collapse all files

14
include/linux/kernel.h
View file

@ -17,6 +17,7 @@
#include <asm/byteorder.h>
#include <asm/div64.h>
#include <uapi/linux/kernel.h>
#include <asm/div64.h>
#define STACK_MAGIC 0xdeadbeef
@ -175,18 +176,7 @@
#define _RET_IP_ (unsigned long)__builtin_return_address(0)
#define _THIS_IP_ ({ __label__ __here; __here: (unsigned long)&&__here; })
#ifdef CONFIG_LBDAF
# define sector_div(a, b) do_div(a, b)
#else
# define sector_div(n, b)( \
{ \
int _res; \
_res = (n) % (b); \
(n) /= (b); \
_res; \
} \
)
#endif
#define sector_div(a, b) do_div(a, b)
/**
* upper_32_bits - return bits 32-63 of a number