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| author | Johannes Berg <johannes.berg@intel.com> | 2021-01-13 21:31:55 +0100 |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2021-02-12 21:28:55 +0100 |
| commit | a15f1e41fbf59d987365018d7439f24aa5801269 (patch) | |
| tree | 1dcd6dff25e867a3aa39a49b039873a30f7f02b0 /fs/hostfs | |
| parent | 731ecea3e5495aa6bd3cb8587f5267cf5e4220e2 (diff) | |
| download | lwn-a15f1e41fbf59d987365018d7439f24aa5801269.tar.gz lwn-a15f1e41fbf59d987365018d7439f24aa5801269.zip | |
um: hostfs: use a kmem cache for inodes
This collects all of them together and makes it possible to
e.g. exclude it from slub debugging.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'fs/hostfs')
| -rw-r--r-- | fs/hostfs/hostfs_kern.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c index aea35459d390..4a5beca6eaa8 100644 --- a/fs/hostfs/hostfs_kern.c +++ b/fs/hostfs/hostfs_kern.c @@ -34,6 +34,8 @@ static inline struct hostfs_inode_info *HOSTFS_I(struct inode *inode) #define FILE_HOSTFS_I(file) HOSTFS_I(file_inode(file)) +static struct kmem_cache *hostfs_inode_cache; + /* Changed in hostfs_args before the kernel starts running */ static char *root_ino = ""; static int append = 0; @@ -221,7 +223,7 @@ static struct inode *hostfs_alloc_inode(struct super_block *sb) { struct hostfs_inode_info *hi; - hi = kmalloc(sizeof(*hi), GFP_KERNEL_ACCOUNT); + hi = kmem_cache_alloc(hostfs_inode_cache, GFP_KERNEL_ACCOUNT); if (hi == NULL) return NULL; hi->fd = -1; @@ -243,7 +245,7 @@ static void hostfs_evict_inode(struct inode *inode) static void hostfs_free_inode(struct inode *inode) { - kfree(HOSTFS_I(inode)); + kmem_cache_free(hostfs_inode_cache, HOSTFS_I(inode)); } static int hostfs_show_options(struct seq_file *seq, struct dentry *root) @@ -986,12 +988,16 @@ MODULE_ALIAS_FS("hostfs"); static int __init init_hostfs(void) { + hostfs_inode_cache = KMEM_CACHE(hostfs_inode_info, 0); + if (!hostfs_inode_cache) + return -ENOMEM; return register_filesystem(&hostfs_type); } static void __exit exit_hostfs(void) { unregister_filesystem(&hostfs_type); + kmem_cache_destroy(hostfs_inode_cache); } module_init(init_hostfs) |