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helpers for acl caching + switch to those

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helpers: get_cached_acl(inode, type), set_cached_acl(inode, type, acl),
forget_cached_acl(inode, type).

ubifs/xattr.c needed includes reordered, the rest is a plain switchover.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2009-06-09 12:11:54 -04:00
parent 06b16e9f68
commit 073aaa1b14
10 changed files with 153 additions and 331 deletions
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81
fs/ext3/acl.c
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@ -126,33 +126,6 @@ fail:
return ERR_PTR(-EINVAL);
}
static inline struct posix_acl *
ext3_iget_acl(struct inode *inode, struct posix_acl **i_acl)
{
struct posix_acl *acl = ACCESS_ONCE(*i_acl);
if (acl) {
spin_lock(&inode->i_lock);
acl = *i_acl;
if (acl != ACL_NOT_CACHED)
acl = posix_acl_dup(acl);
spin_unlock(&inode->i_lock);
}
return acl;
}
static inline void
ext3_iset_acl(struct inode *inode, struct posix_acl **i_acl,
struct posix_acl *acl)
{
spin_lock(&inode->i_lock);
if (*i_acl != ACL_NOT_CACHED)
posix_acl_release(*i_acl);
*i_acl = posix_acl_dup(acl);
spin_unlock(&inode->i_lock);
}
/*
* Inode operation get_posix_acl().
*
@ -169,24 +142,21 @@ ext3_get_acl(struct inode *inode, int type)
if (!test_opt(inode->i_sb, POSIX_ACL))
return NULL;
switch(type) {
case ACL_TYPE_ACCESS:
acl = ext3_iget_acl(inode, &inode->i_acl);
if (acl != ACL_NOT_CACHED)
return acl;
name_index = EXT3_XATTR_INDEX_POSIX_ACL_ACCESS;
break;
acl = get_cached_acl(inode, type);
if (acl != ACL_NOT_CACHED)
return acl;
case ACL_TYPE_DEFAULT:
acl = ext3_iget_acl(inode, &inode->i_default_acl);
if (acl != ACL_NOT_CACHED)
return acl;
name_index = EXT3_XATTR_INDEX_POSIX_ACL_DEFAULT;
break;
default:
return ERR_PTR(-EINVAL);
switch (type) {
case ACL_TYPE_ACCESS:
name_index = EXT3_XATTR_INDEX_POSIX_ACL_ACCESS;
break;
case ACL_TYPE_DEFAULT:
name_index = EXT3_XATTR_INDEX_POSIX_ACL_DEFAULT;
break;
default:
BUG();
}
retval = ext3_xattr_get(inode, name_index, "", NULL, 0);
if (retval > 0) {
value = kmalloc(retval, GFP_NOFS);
@ -202,17 +172,9 @@ ext3_get_acl(struct inode *inode, int type)
acl = ERR_PTR(retval);
kfree(value);
if (!IS_ERR(acl)) {
switch(type) {
case ACL_TYPE_ACCESS:
ext3_iset_acl(inode, &inode->i_acl, acl);
break;
if (!IS_ERR(acl))
set_cached_acl(inode, type, acl);
case ACL_TYPE_DEFAULT:
ext3_iset_acl(inode, &inode->i_default_acl, acl);
break;
}
}
return acl;
}
@ -269,17 +231,10 @@ ext3_set_acl(handle_t *handle, struct inode *inode, int type,
value, size, 0);
kfree(value);
if (!error) {
switch(type) {
case ACL_TYPE_ACCESS:
ext3_iset_acl(inode, &inode->i_acl, acl);
break;
case ACL_TYPE_DEFAULT:
ext3_iset_acl(inode, &inode->i_default_acl, acl);
break;
}
}
if (!error)
set_cached_acl(inode, type, acl);
return error;
}