diff options
Diffstat (limited to 'fs/9p/v9fs.c')
| -rw-r--r-- | fs/9p/v9fs.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c index 738be8f6994..c82b017f51f 100644 --- a/fs/9p/v9fs.c +++ b/fs/9p/v9fs.c @@ -39,6 +39,7 @@ static DEFINE_SPINLOCK(v9fs_sessionlist_lock); static LIST_HEAD(v9fs_sessionlist); +struct kmem_cache *v9fs_inode_cache; /* * Option Parsing (code inspired by NFS code) @@ -481,6 +482,63 @@ static void v9fs_sysfs_cleanup(void) kobject_put(v9fs_kobj); } +static void v9fs_inode_init_once(void *foo) +{ + struct v9fs_inode *v9inode = (struct v9fs_inode *)foo; +#ifdef CONFIG_9P_FSCACHE + v9inode->fscache = NULL; + v9inode->fscache_key = NULL; +#endif + inode_init_once(&v9inode->vfs_inode); +} + +/** + * v9fs_init_inode_cache - initialize a cache for 9P + * Returns 0 on success. + */ +static int v9fs_init_inode_cache(void) +{ + v9fs_inode_cache = kmem_cache_create("v9fs_inode_cache", + sizeof(struct v9fs_inode), + 0, (SLAB_RECLAIM_ACCOUNT| + SLAB_MEM_SPREAD), + v9fs_inode_init_once); + if (!v9fs_inode_cache) + return -ENOMEM; + + return 0; +} + +/** + * v9fs_destroy_inode_cache - destroy the cache of 9P inode + * + */ +static void v9fs_destroy_inode_cache(void) +{ + kmem_cache_destroy(v9fs_inode_cache); +} + +static int v9fs_cache_register(void) +{ + int ret; + ret = v9fs_init_inode_cache(); + if (ret < 0) + return ret; +#ifdef CONFIG_9P_FSCACHE + return fscache_register_netfs(&v9fs_cache_netfs); +#else + return ret; +#endif +} + +static void v9fs_cache_unregister(void) +{ + v9fs_destroy_inode_cache(); +#ifdef CONFIG_9P_FSCACHE + fscache_unregister_netfs(&v9fs_cache_netfs); +#endif +} + /** * init_v9fs - Initialize module * |