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authorJohannes Berg <johannes.berg@intel.com>2021-01-13 23:31:55 +0300
committerRichard Weinberger <richard@nod.at>2021-02-12 23:28:55 +0300
commita15f1e41fbf59d987365018d7439f24aa5801269 (patch)
tree1dcd6dff25e867a3aa39a49b039873a30f7f02b0 /fs/hostfs
parent731ecea3e5495aa6bd3cb8587f5267cf5e4220e2 (diff)
downloadlinux-a15f1e41fbf59d987365018d7439f24aa5801269.tar.xz
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.c10
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)