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

Telusuri Sumber 
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 <torvalds@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Linus Torvalds
2013-05-21 15:22:44 -07:00
committed by Al Viro
orang tua 642b704cd7
melakukan da53be12bb
23 mengubah file dengan 108 tambahan dan 165 penghapusan
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7
fs/hfs/hfs_fs.h
Melihat File

@@ -229,13 +229,10 @@ extern int hfs_part_find(struct super_block *, sector_t *, sector_t *);
/* string.c */
extern const struct dentry_operations hfs_dentry_operations;
extern int hfs_hash_dentry(const struct dentry *, const struct inode *,
struct qstr *);
extern int hfs_hash_dentry(const struct dentry *, struct qstr *);
extern int hfs_strcmp(const unsigned char *, unsigned int,
const unsigned char *, unsigned int);
extern int hfs_compare_dentry(const struct dentry *parent,
const struct inode *pinode,
const struct dentry *dentry, const struct inode *inode,
extern int hfs_compare_dentry(const struct dentry *parent, const struct dentry *dentry,
unsigned int len, const char *str, const struct qstr *name);
/* trans.c */

6
fs/hfs/string.c
Melihat File

@@ -51,8 +51,7 @@ static unsigned char caseorder[256] = {
/*
* Hash a string to an integer in a case-independent way
*/
int hfs_hash_dentry(const struct dentry *dentry, const struct inode *inode,
struct qstr *this)
int hfs_hash_dentry(const struct dentry *dentry, struct qstr *this)
{
const unsigned char *name = this->name;
unsigned int hash, len = this->len;
@@ -93,8 +92,7 @@ int hfs_strcmp(const unsigned char *s1, unsigned int len1,
* Test for equality of two strings in the HFS filename character ordering.
* return 1 on failure and 0 on success
*/
int hfs_compare_dentry(const struct dentry *parent, const struct inode *pinode,
const struct dentry *dentry, const struct inode *inode,
int hfs_compare_dentry(const struct dentry *parent, const struct dentry *dentry,
unsigned int len, const char *str, const struct qstr *name)
{
const unsigned char *n1, *n2;