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mm/zpool: add name argument to create zpool

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Currently the underlay of zpool: zsmalloc/zbud, do not know who creates
them.  There is not a method to let zsmalloc/zbud find which caller they
belong to.

Now we want to add statistics collection in zsmalloc.  We need to name the
debugfs dir for each pool created.  The way suggested by Minchan Kim is to
use a name passed by caller(such as zram) to create the zsmalloc pool.

    /sys/kernel/debug/zsmalloc/zram0

This patch adds an argument `name' to zs_create_pool() and other related
functions.

Signed-off-by: Ganesh Mahendran <opensource.ganesh@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Seth Jennings <sjennings@variantweb.net>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Dan Streetman <ddstreet@ieee.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 15:00:51 -08:00 • committed by Linus Torvalds
parent ee98016010
commit 3eba0c6a56
7 changed files with 21 additions and 14 deletions
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5
include/linux/zpool.h
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@ -36,7 +36,8 @@ enum zpool_mapmode {
ZPOOL_MM_DEFAULT = ZPOOL_MM_RW
};
struct zpool *zpool_create_pool(char *type, gfp_t gfp, struct zpool_ops *ops);
struct zpool *zpool_create_pool(char *type, char *name,
gfp_t gfp, struct zpool_ops *ops);
char *zpool_get_type(struct zpool *pool);
@ -80,7 +81,7 @@ struct zpool_driver {
atomic_t refcount;
struct list_head list;
void *(*create)(gfp_t gfp, struct zpool_ops *ops);
void *(*create)(char *name, gfp_t gfp, struct zpool_ops *ops);
void (*destroy)(void *pool);
int (*malloc)(void *pool, size_t size, gfp_t gfp,