Don't pass inode to ->d_hash() and ->d_compare()

Instances either don't look at it at all (the majority of cases) or
only want it to find the superblock (which can be had as dentry->d_sb).
A few cases that want more are actually safe with dentry->d_inode -
the only precaution needed is the check that it hadn't been replaced with
NULL by rmdir() or by overwriting rename(), which case should be simply
treated as cache miss.

Signed-off-by: Linus Torvalds <[email protected]>
Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Linus Torvalds 2013-05-21 15:22:44 -07:00 • committed by Al Viro
commit da53be12bb
23 changed files with 108 additions and 165 deletions

View file

@ -45,8 +45,8 @@ static struct super_block *efivarfs_sb;
* So we need to perform a case-sensitive match on part 1 and a
* case-insensitive match on part 2.
*/
static int efivarfs_d_compare(const struct dentry *parent, const struct inode *pinode,
const struct dentry *dentry, const struct inode *inode,
static int efivarfs_d_compare(const struct dentry *parent,
const struct dentry *dentry,
unsigned int len, const char *str,
const struct qstr *name)
{
@ -63,8 +63,7 @@ static int efivarfs_d_compare(const struct dentry *parent, const struct inode *p
return strncasecmp(name->name + guid, str + guid, EFI_VARIABLE_GUID_LEN);
}
static int efivarfs_d_hash(const struct dentry *dentry,
const struct inode *inode, struct qstr *qstr)
static int efivarfs_d_hash(const struct dentry *dentry, struct qstr *qstr)
{
unsigned long hash = init_name_hash();
const unsigned char *s = qstr->name;
@ -108,7 +107,7 @@ static struct dentry *efivarfs_alloc_dentry(struct dentry *parent, char *name)
q.name = name;
q.len = strlen(name);
err = efivarfs_d_hash(NULL, NULL, &q);
err = efivarfs_d_hash(NULL, &q);
if (err)
return ERR_PTR(err);