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add caching of ACLs in struct inode

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2009-06-08 19:50:45 -04:00
parent 3e63cbb1ef
commit f19d4a8fa6
2 changed files with 17 additions and 0 deletions
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10
fs/inode.c
View File

@ -25,6 +25,7 @@
#include <linux/fsnotify.h>
#include <linux/mount.h>
#include <linux/async.h>
#include <linux/posix_acl.h>
/*
* This is needed for the following functions:
@ -189,6 +190,9 @@ struct inode *inode_init_always(struct super_block *sb, struct inode *inode)
}
inode->i_private = NULL;
inode->i_mapping = mapping;
#ifdef CONFIG_FS_POSIX_ACL
inode->i_acl = inode->i_default_acl = ACL_NOT_CACHED;
#endif
#ifdef CONFIG_FSNOTIFY
inode->i_fsnotify_mask = 0;
@ -227,6 +231,12 @@ void destroy_inode(struct inode *inode)
ima_inode_free(inode);
security_inode_free(inode);
fsnotify_inode_delete(inode);
#ifdef CONFIG_FS_POSIX_ACL
if (inode->i_acl && inode->i_acl != ACL_NOT_CACHED)
posix_acl_release(inode->i_acl);
if (inode->i_default_acl && inode->i_default_acl != ACL_NOT_CACHED)
posix_acl_release(inode->i_default_acl);
#endif
if (inode->i_sb->s_op->destroy_inode)
inode->i_sb->s_op->destroy_inode(inode);
else

7
include/linux/fs.h
View File

@ -710,6 +710,9 @@ static inline int mapping_writably_mapped(struct address_space *mapping)
#define i_size_ordered_init(inode) do { } while (0)
#endif
struct posix_acl;
#define ACL_NOT_CACHED ((void *)(-1))
struct inode {
struct hlist_node i_hash;
struct list_head i_list;
@ -772,6 +775,10 @@ struct inode {
atomic_t i_writecount;
#ifdef CONFIG_SECURITY
void *i_security;
#endif
#ifdef CONFIG_FS_POSIX_ACL
struct posix_acl *i_acl;
struct posix_acl *i_default_acl;
#endif
void *i_private; /* fs or device private pointer */
};