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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>
This commit is contained in:
Johannes Berg 2021-01-13 21:31:55 +01:00 committed by Richard Weinberger
parent 731ecea3e5
commit a15f1e41fb
1 changed files with 8 additions and 2 deletions
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10
fs/hostfs/hostfs_kern.c
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@ -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)