diff options
| author | Christoph Hellwig <hch@lst.de> | 2019-04-05 18:08:59 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2019-04-06 10:48:35 -0600 |
| commit | 72deb455b5ec619ff043c30bc90025aa3de3cdda (patch) | |
| tree | 8c2a77bc41d25181e03da1f04068be12a4c0583c /include/linux | |
| parent | 75199aa5269f66d0958aa9971fa81a92de83d7f9 (diff) | |
block: remove CONFIG_LBDAF
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>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/genhd.h | 8 | ||||
| -rw-r--r-- | include/linux/kernel.h | 14 | ||||
| -rw-r--r-- | include/linux/types.h | 5 |
3 files changed, 6 insertions, 21 deletions
diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 06c0fd594097..98076b1b5e48 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -714,7 +714,7 @@ static inline void hd_free_part(struct hd_struct *part) */ static inline sector_t part_nr_sects_read(struct hd_struct *part) { -#if BITS_PER_LONG==32 && defined(CONFIG_LBDAF) && defined(CONFIG_SMP) +#if BITS_PER_LONG==32 && defined(CONFIG_SMP) sector_t nr_sects; unsigned seq; do { @@ -722,7 +722,7 @@ static inline sector_t part_nr_sects_read(struct hd_struct *part) nr_sects = part->nr_sects; } while (read_seqcount_retry(&part->nr_sects_seq, seq)); return nr_sects; -#elif BITS_PER_LONG==32 && defined(CONFIG_LBDAF) && defined(CONFIG_PREEMPT) +#elif BITS_PER_LONG==32 && defined(CONFIG_PREEMPT) sector_t nr_sects; preempt_disable(); @@ -741,11 +741,11 @@ static inline sector_t part_nr_sects_read(struct hd_struct *part) */ static inline void part_nr_sects_write(struct hd_struct *part, sector_t size) { -#if BITS_PER_LONG==32 && defined(CONFIG_LBDAF) && defined(CONFIG_SMP) +#if BITS_PER_LONG==32 && defined(CONFIG_SMP) write_seqcount_begin(&part->nr_sects_seq); part->nr_sects = size; write_seqcount_end(&part->nr_sects_seq); -#elif BITS_PER_LONG==32 && defined(CONFIG_LBDAF) && defined(CONFIG_PREEMPT) +#elif BITS_PER_LONG==32 && defined(CONFIG_PREEMPT) preempt_disable(); part->nr_sects = size; preempt_enable(); diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 34a5036debd3..24ef5a018a5e 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -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 diff --git a/include/linux/types.h b/include/linux/types.h index cc0dbbe551d5..231114ae38f4 100644 --- a/include/linux/types.h +++ b/include/linux/types.h @@ -127,13 +127,8 @@ typedef s64 int64_t; * * blkcnt_t is the type of the inode's block count. */ -#ifdef CONFIG_LBDAF typedef u64 sector_t; typedef u64 blkcnt_t; -#else -typedef unsigned long sector_t; -typedef unsigned long blkcnt_t; -#endif /* * The type of an index into the pagecache. |