From 97c7b18a5d15516a4358a6d2d5ddfb22d62d9fac Mon Sep 17 00:00:00 2001 From: Eric Biggers Date: Sat, 3 Dec 2016 15:38:29 -0500 Subject: [PATCH] mbcache: remove unnecessary module_get/module_put When mbcache is built as a module, any modules that use it (ext2 and/or ext4) will depend on its symbols directly, incrementing its reference count. Therefore, there is no need to do module_get/module_put. Also note that since the module_get/module_put were in the mbcache module itself, executing those lines of code was already dependent on another reference to the mbcache module being held. Signed-off-by: Eric Biggers Signed-off-by: Theodore Ts'o Reviewed-by: Jan Kara --- fs/mbcache.c | 5 ----- 1 file changed, 5 deletions(-) diff --git a/fs/mbcache.c b/fs/mbcache.c index c56ab2164d6b..07c5d7d2b701 100644 --- a/fs/mbcache.c +++ b/fs/mbcache.c @@ -344,9 +344,6 @@ struct mb_cache *mb_cache_create(int bucket_bits) int bucket_count = 1 << bucket_bits; int i; - if (!try_module_get(THIS_MODULE)) - return NULL; - cache = kzalloc(sizeof(struct mb_cache), GFP_KERNEL); if (!cache) goto err_out; @@ -377,7 +374,6 @@ struct mb_cache *mb_cache_create(int bucket_bits) return cache; err_out: - module_put(THIS_MODULE); return NULL; } EXPORT_SYMBOL(mb_cache_create); @@ -411,7 +407,6 @@ void mb_cache_destroy(struct mb_cache *cache) } kfree(cache->c_hash); kfree(cache); - module_put(THIS_MODULE); } EXPORT_SYMBOL(mb_cache_destroy);