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zram: clear disk io accounting when reset zram device

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Clear zram disk io accounting when resetting the zram device.  Otherwise
the residual io accounting stat will affect the diskstat in the next
zram active cycle.

Signed-off-by: Weijie Yang <[email protected]>
Acked-by: Sergey Senozhatsky <[email protected]>
Acked-by: Minchan Kim <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Weijie Yang 2015-06-10 11:14:49 -07:00 • committed by Linus Torvalds
commit d7ad41a1c4
1 changed files with 2 additions and 0 deletions
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2
drivers/block/zram/zram_drv.c
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@ -805,7 +805,9 @@ static void zram_reset_device(struct zram *zram)
memset(&zram->stats, 0, sizeof(zram->stats));
zram->disksize = 0;
zram->max_comp_streams = 1;
set_capacity(zram->disk, 0);
part_stat_set_all(&zram->disk->part0, 0);
up_write(&zram->init_lock);
/* I/O operation under all of CPU are done so let's free */