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ANDROID: sdcardfs: Use case insensitive hash function

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Case insensitive comparisons don't help us much if
we hash to different buckets...

Signed-off-by: Daniel Rosenberg <drosen@google.com>
bug: 36004503
Change-Id: I91e00dbcd860a709cbd4f7fd7fc6d855779f3285
This commit is contained in:
Daniel Rosenberg
2017-03-10 12:39:42 -08:00
committed by Amit Pundir
parent 52d522b505
commit 989624c14f
1 changed files with 10 additions and 1 deletions
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11
fs/sdcardfs/packagelist.c
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@@ -20,6 +20,7 @@
#include "sdcardfs.h"
#include <linux/hashtable.h>
#include <linux/ctype.h>
#include <linux/delay.h>
#include <linux/radix-tree.h>
#include <linux/dcache.h>
@@ -44,10 +45,18 @@ static DEFINE_HASHTABLE(ext_to_groupid, 8);
static struct kmem_cache *hashtable_entry_cachep;
static unsigned int full_name_case_hash(const unsigned char *name, unsigned int len)
{
unsigned long hash = init_name_hash();
while (len--)
hash = partial_name_hash(tolower(*name++), hash);
return end_name_hash(hash);
}
static void inline qstr_init(struct qstr *q, const char *name) {
q->name = name;
q->len = strlen(q->name);
q->hash = full_name_hash(q->name, q->len);
q->hash = full_name_case_hash(q->name, q->len);
}
static inline int qstr_copy(const struct qstr *src, struct qstr *dest) {