zpool: remove zpool_evict()
Remove zpool_evict() helper function. As zbud is currently the only zpool implementation that supports eviction, add zpool and zpool_ops references to struct zbud_pool and directly call zpool_ops->evict(zpool, handle) on eviction. Currently zpool provides the zpool_evict helper which locks the zpool list lock and searches through all pools to find the specific one matching the caller, and call the corresponding zpool_ops->evict function. However, this is unnecessary, as the zbud pool can simply keep a reference to the zpool that created it, as well as the zpool_ops, and directly call the zpool_ops->evict function, when it needs to evict a page. This avoids a spinlock and list search in zpool for each eviction. Signed-off-by: Dan Streetman <ddstreet@ieee.org> Cc: Seth Jennings <sjennings@variantweb.net> Cc: Minchan Kim <minchan@kernel.org> Cc: Nitin Gupta <ngupta@vflare.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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committed by
Linus Torvalds

parent
cf41f5f496
commit
479305fd71
@@ -81,7 +81,8 @@ struct zpool_driver {
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atomic_t refcount;
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struct list_head list;
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void *(*create)(char *name, gfp_t gfp, struct zpool_ops *ops);
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void *(*create)(char *name, gfp_t gfp, struct zpool_ops *ops,
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struct zpool *zpool);
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void (*destroy)(void *pool);
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int (*malloc)(void *pool, size_t size, gfp_t gfp,
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@@ -102,6 +103,4 @@ void zpool_register_driver(struct zpool_driver *driver);
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int zpool_unregister_driver(struct zpool_driver *driver);
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int zpool_evict(void *pool, unsigned long handle);
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#endif
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