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zpool: remove the list of pools_head 

The list of pools_head is no longer needed because the caller has been
deleted in commit 479305fd71 ("zpool: remove zpool_evict()").

Link: https://lkml.kernel.org/r/20211215163727.GA17196@pc
Signed-off-by: Zhaoyu Liu <zackary.liu.pro@gmail.com>
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:
Zhaoyu Liu 2022-01-14 14:09:19 -08:00 committed by Linus Torvalds
parent 5ee2fa2f06
commit f44e1e6976
1 changed files with 0 additions and 12 deletions
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12
mm/zpool.c
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@ -24,16 +24,11 @@ struct zpool {
const struct zpool_ops *ops; const struct zpool_ops *ops;
bool evictable; bool evictable;
bool can_sleep_mapped; bool can_sleep_mapped;
struct list_head list;
}; };
static LIST_HEAD(drivers_head); static LIST_HEAD(drivers_head);
static DEFINE_SPINLOCK(drivers_lock); static DEFINE_SPINLOCK(drivers_lock);
static LIST_HEAD(pools_head);
static DEFINE_SPINLOCK(pools_lock);
/** /**
* zpool_register_driver() - register a zpool implementation. * zpool_register_driver() - register a zpool implementation.
* @driver: driver to register * @driver: driver to register
@ -195,10 +190,6 @@ struct zpool *zpool_create_pool(const char *type, const char *name, gfp_t gfp,
pr_debug("created pool type %s\n", type); pr_debug("created pool type %s\n", type);
spin_lock(&pools_lock);
list_add(&zpool->list, &pools_head);
spin_unlock(&pools_lock);
return zpool; return zpool;
} }
@ -217,9 +208,6 @@ void zpool_destroy_pool(struct zpool *zpool)
{ {
pr_debug("destroying pool type %s\n", zpool->driver->type); pr_debug("destroying pool type %s\n", zpool->driver->type);
spin_lock(&pools_lock);
list_del(&zpool->list);
spin_unlock(&pools_lock);
zpool->driver->destroy(zpool->pool); zpool->driver->destroy(zpool->pool);
zpool_put_driver(zpool->driver); zpool_put_driver(zpool->driver);
kfree(zpool); kfree(zpool);