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staging: exfat: rename buf_cache_t's 'flag' to 'locked'

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buf_cache_t.flag is used only for lock.
Change the variable name from 'flag' to 'locked' and remove unused definitions.

Reviewed-by: Takahiro Mori <Mori.Takahiro@ab.MitsubishiElectric.co.jp>
Signed-off-by: Tetsuhiro Kohada <Kohada.Tetsuhiro@dc.MitsubishiElectric.co.jp>
Link: https://lore.kernel.org/r/20200227104043.11503-1-Kohada.Tetsuhiro@dc.MitsubishiElectric.co.jp
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tetsuhiro Kohada
2020-02-27 19:40:43 +09:00
committed by Greg Kroah-Hartman
parent a89af1e1b9
commit ece19f3ec8
2 changed files with 13 additions and 16 deletions
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2
drivers/staging/exfat/exfat.h
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@@ -457,7 +457,7 @@ struct buf_cache_t {
struct buf_cache_t *hash_prev;
s32 drv;
sector_t sec;
u32 flag;
bool locked;
struct buffer_head *buf_bh;
};

27
drivers/staging/exfat/exfat_cache.c
View File

@@ -8,9 +8,6 @@
#include <linux/mutex.h>
#include "exfat.h"
#define LOCKBIT 0x01
#define DIRTYBIT 0x02
/* Local variables */
static DEFINE_MUTEX(f_mutex);
static DEFINE_MUTEX(b_mutex);
@@ -141,7 +138,7 @@ void exfat_buf_init(struct super_block *sb)
for (i = 0; i < FAT_CACHE_SIZE; i++) {
p_fs->FAT_cache_array[i].drv = -1;
p_fs->FAT_cache_array[i].sec = ~0;
p_fs->FAT_cache_array[i].flag = 0;
p_fs->FAT_cache_array[i].locked = false;
p_fs->FAT_cache_array[i].buf_bh = NULL;
p_fs->FAT_cache_array[i].prev = NULL;
p_fs->FAT_cache_array[i].next = NULL;
@@ -155,7 +152,7 @@ void exfat_buf_init(struct super_block *sb)
for (i = 0; i < BUF_CACHE_SIZE; i++) {
p_fs->buf_cache_array[i].drv = -1;
p_fs->buf_cache_array[i].sec = ~0;
p_fs->buf_cache_array[i].flag = 0;
p_fs->buf_cache_array[i].locked = false;
p_fs->buf_cache_array[i].buf_bh = NULL;
p_fs->buf_cache_array[i].prev = NULL;
p_fs->buf_cache_array[i].next = NULL;
@@ -289,7 +286,7 @@ u8 *exfat_fat_getblk(struct super_block *sb, sector_t sec)
bp->drv = p_fs->drv;
bp->sec = sec;
bp->flag = 0;
bp->locked = false;
FAT_cache_insert_hash(sb, bp);
@@ -297,7 +294,7 @@ u8 *exfat_fat_getblk(struct super_block *sb, sector_t sec)
FAT_cache_remove_hash(bp);
bp->drv = -1;
bp->sec = ~0;
bp->flag = 0;
bp->locked = false;
bp->buf_bh = NULL;
move_to_lru(bp, &p_fs->FAT_cache_lru_list);
@@ -328,7 +325,7 @@ void exfat_fat_release_all(struct super_block *sb)
if (bp->drv == p_fs->drv) {
bp->drv = -1;
bp->sec = ~0;
bp->flag = 0;
bp->locked = false;
if (bp->buf_bh) {
__brelse(bp->buf_bh);
@@ -366,7 +363,7 @@ static struct buf_cache_t *buf_cache_get(struct super_block *sb, sector_t sec)
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
bp = p_fs->buf_cache_lru_list.prev;
while (bp->flag & LOCKBIT)
while (bp->locked)
bp = bp->prev;
move_to_mru(bp, &p_fs->buf_cache_lru_list);
@@ -390,7 +387,7 @@ static u8 *__exfat_buf_getblk(struct super_block *sb, sector_t sec)
bp->drv = p_fs->drv;
bp->sec = sec;
bp->flag = 0;
bp->locked = false;
buf_cache_insert_hash(sb, bp);
@@ -398,7 +395,7 @@ static u8 *__exfat_buf_getblk(struct super_block *sb, sector_t sec)
buf_cache_remove_hash(bp);
bp->drv = -1;
bp->sec = ~0;
bp->flag = 0;
bp->locked = false;
bp->buf_bh = NULL;
move_to_lru(bp, &p_fs->buf_cache_lru_list);
@@ -443,7 +440,7 @@ void exfat_buf_lock(struct super_block *sb, sector_t sec)
bp = buf_cache_find(sb, sec);
if (likely(bp))
bp->flag |= LOCKBIT;
bp->locked = true;
WARN(!bp, "[EXFAT] failed to find buffer_cache(sector:%llu).\n",
(unsigned long long)sec);
@@ -459,7 +456,7 @@ void exfat_buf_unlock(struct super_block *sb, sector_t sec)
bp = buf_cache_find(sb, sec);
if (likely(bp))
bp->flag &= ~(LOCKBIT);
bp->locked = false;
WARN(!bp, "[EXFAT] failed to find buffer_cache(sector:%llu).\n",
(unsigned long long)sec);
@@ -478,7 +475,7 @@ void exfat_buf_release(struct super_block *sb, sector_t sec)
if (likely(bp)) {
bp->drv = -1;
bp->sec = ~0;
bp->flag = 0;
bp->locked = false;
if (bp->buf_bh) {
__brelse(bp->buf_bh);
@@ -503,7 +500,7 @@ void exfat_buf_release_all(struct super_block *sb)
if (bp->drv == p_fs->drv) {
bp->drv = -1;
bp->sec = ~0;
bp->flag = 0;
bp->locked = false;
if (bp->buf_bh) {
__brelse(bp->buf_bh);