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UPSTREAM: zram: free meta table in zram_meta_free

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(cherry-pick from commit 1fec117281d9f5349c35279c9521f4096fa33357)

zram_meta_alloc() and zram_meta_free() are a pair.  In
zram_meta_alloc(), meta table is allocated.  So it it better to free it
in zram_meta_free().

Bug: 25951511

Change-Id: Idfc0f20c7b0756318d884bcebd2decc66371ed64
Signed-off-by: Ganesh Mahendran <opensource.ganesh@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Acked-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Nitin Gupta <ngupta@vflare.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Ganesh Mahendran 2015-02-12 15:00:33 -08:00 committed by Artem Borisov
parent 9e1b1ef967
commit f3f8a63d9e
1 changed files with 16 additions and 17 deletions
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33
drivers/block/zram/zram_drv.c
View file

@ -308,8 +308,21 @@ static inline int valid_io_request(struct zram *zram,
return 1;
}
static void zram_meta_free(struct zram_meta *meta)
static void zram_meta_free(struct zram_meta *meta, u64 disksize)
{
size_t num_pages = disksize >> PAGE_SHIFT;
size_t index;
/* Free all pages that are still in this zram device */
for (index = 0; index < num_pages; index++) {
unsigned long handle = meta->table[index].handle;
if (!handle)
continue;
zs_free(meta->mem_pool, handle);
}
zs_destroy_pool(meta->mem_pool);
vfree(meta->table);
kfree(meta);
@ -705,9 +718,6 @@ static void zram_bio_discard(struct zram *zram, u32 index,
static void zram_reset_device(struct zram *zram, bool reset_capacity)
{
size_t index;
struct zram_meta *meta;
down_write(&zram->init_lock);
zram->limit_pages = 0;
@ -717,20 +727,9 @@ static void zram_reset_device(struct zram *zram, bool reset_capacity)
return;
}
meta = zram->meta;
/* Free all pages that are still in this zram device */
for (index = 0; index < zram->disksize >> PAGE_SHIFT; index++) {
unsigned long handle = meta->table[index].handle;
if (!handle)
continue;
zs_free(meta->mem_pool, handle);
}
zcomp_destroy(zram->comp);
zram->max_comp_streams = 1;
zram_meta_free(zram->meta);
zram_meta_free(zram->meta, zram->disksize);
zram->meta = NULL;
/* Reset stats */
memset(&zram->stats, 0, sizeof(zram->stats));
@ -802,7 +801,7 @@ out_destroy_comp:
up_write(&zram->init_lock);
zcomp_destroy(comp);
out_free_meta:
zram_meta_free(meta);
zram_meta_free(meta, disksize);
return err;
}