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zram: use zram_free_page instead of open-coded 

The zram_free_page already handles NULL handle case and same page so use
it to reduce error probability.  (Acutaully, I made a mistake when I
handled same page feature)

Link: http://lkml.kernel.org/r/1492052365-16169-7-git-send-email-minchan@kernel.org
Signed-off-by: Minchan Kim <minchan@kernel.org>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Johannes Thumshirn <jthumshirn@suse.de>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Minchan Kim 2017-05-03 14:55:53 -07:00 committed by Linus Torvalds
parent 643ae61d0f
commit 302128dce1
1 changed files with 3 additions and 14 deletions
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17
drivers/block/zram/zram_drv.c
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@ -480,17 +480,8 @@ static void zram_meta_free(struct zram *zram, u64 disksize)
size_t index;
/* Free all pages that are still in this zram device */
for (index = 0; index < num_pages; index++) {
unsigned long handle = zram_get_handle(zram, index);
/*
* No memory is allocated for same element filled pages.
* Simply clear same page flag.
*/
if (!handle || zram_test_flag(zram, index, ZRAM_SAME))
continue;
zs_free(zram->mem_pool, handle);
}
for (index = 0; index < num_pages; index++)
zram_free_page(zram, index);
zs_destroy_pool(zram->mem_pool);
vfree(zram->table);
@ -978,9 +969,6 @@ static void zram_reset_device(struct zram *zram)
comp = zram->comp;
disksize = zram->disksize;
/* Reset stats */
memset(&zram->stats, 0, sizeof(zram->stats));
zram->disksize = 0;
set_capacity(zram->disk, 0);
@ -989,6 +977,7 @@ static void zram_reset_device(struct zram *zram)
up_write(&zram->init_lock);
/* I/O operation under all of CPU are done so let's free */
zram_meta_free(zram, disksize);
memset(&zram->stats, 0, sizeof(zram->stats));
zcomp_destroy(comp);
}