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filp_cachep can be static in fs/file_table.c

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Instead of creating the "filp" kmem_cache in vfs_caches_init(),
we can do it a litle be later in files_init(), so that filp_cachep
is static to fs/file_table.c

Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Eric Dumazet 2008-12-10 09:35:45 -08:00 committed by Al Viro
parent fd659fd627
commit b6b3fdead2
3 changed files with 9 additions and 9 deletions
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6
fs/dcache.c
View file

@ -2314,9 +2314,6 @@ static void __init dcache_init(void)
/* SLAB cache for __getname() consumers */ /* SLAB cache for __getname() consumers */
struct kmem_cache *names_cachep __read_mostly; struct kmem_cache *names_cachep __read_mostly;
/* SLAB cache for file structures */
struct kmem_cache *filp_cachep __read_mostly;
EXPORT_SYMBOL(d_genocide); EXPORT_SYMBOL(d_genocide);
void __init vfs_caches_init_early(void) void __init vfs_caches_init_early(void)
@ -2338,9 +2335,6 @@ void __init vfs_caches_init(unsigned long mempages)
names_cachep = kmem_cache_create("names_cache", PATH_MAX, 0, names_cachep = kmem_cache_create("names_cache", PATH_MAX, 0,
SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL); SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL);
filp_cachep = kmem_cache_create("filp", sizeof(struct file), 0,
SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL);
dcache_init(); dcache_init();
inode_init(); inode_init();
files_init(mempages); files_init(mempages);

10
fs/file_table.c
View file

@ -32,6 +32,9 @@ struct files_stat_struct files_stat = {
/* public. Not pretty! */ /* public. Not pretty! */
__cacheline_aligned_in_smp DEFINE_SPINLOCK(files_lock); __cacheline_aligned_in_smp DEFINE_SPINLOCK(files_lock);
/* SLAB cache for file structures */
static struct kmem_cache *filp_cachep __read_mostly;
static struct percpu_counter nr_files __cacheline_aligned_in_smp; static struct percpu_counter nr_files __cacheline_aligned_in_smp;
static inline void file_free_rcu(struct rcu_head *head) static inline void file_free_rcu(struct rcu_head *head)
@ -397,7 +400,12 @@ too_bad:
void __init files_init(unsigned long mempages) void __init files_init(unsigned long mempages)
{ {
int n; int n;
/* One file with associated inode and dcache is very roughly 1K.
filp_cachep = kmem_cache_create("filp", sizeof(struct file), 0,
SLAB_HWCACHE_ALIGN | SLAB_PANIC, NULL);
/*
* One file with associated inode and dcache is very roughly 1K.
* Per default don't use more than 10% of our memory for files. * Per default don't use more than 10% of our memory for files.
*/ */

2
include/linux/fdtable.h
View file

@ -57,8 +57,6 @@ struct files_struct {
#define files_fdtable(files) (rcu_dereference((files)->fdt)) #define files_fdtable(files) (rcu_dereference((files)->fdt))
extern struct kmem_cache *filp_cachep;
struct file_operations; struct file_operations;
struct vfsmount; struct vfsmount;
struct dentry; struct dentry;