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zram: move backing_dev under macro CONFIG_ZRAM_WRITEBACK

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backing_dev is never used when not enable CONFIG_ZRAM_WRITEBACK and it's
introduced from writeback feature.  So it's needless also affect
readability in that case.

Link: https://lkml.kernel.org/r/20210521060544.2385-1-zbestahu@gmail.com
Signed-off-by: Yue Hu <huyue2@yulong.com>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Yue Hu 2021-06-30 18:53:07 -07:00 committed by Linus Torvalds
parent 3384833726
commit dd79483543
1 changed files with 1 additions and 1 deletions
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2
drivers/block/zram/zram_drv.h
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@ -113,8 +113,8 @@ struct zram {
* zram is claimed so open request will be failed
*/
bool claim; /* Protected by bdev->bd_mutex */
struct file *backing_dev;
#ifdef CONFIG_ZRAM_WRITEBACK
struct file *backing_dev;
spinlock_t wb_limit_lock;
bool wb_limit_enable;
u64 bd_wb_limit;