From 989624c14f9b69dfa67007886661b16d8aad05f9 Mon Sep 17 00:00:00 2001 From: Daniel Rosenberg Date: Fri, 10 Mar 2017 12:39:42 -0800 Subject: [PATCH] ANDROID: sdcardfs: Use case insensitive hash function Case insensitive comparisons don't help us much if we hash to different buckets... Signed-off-by: Daniel Rosenberg bug: 36004503 Change-Id: I91e00dbcd860a709cbd4f7fd7fc6d855779f3285 --- fs/sdcardfs/packagelist.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/fs/sdcardfs/packagelist.c b/fs/sdcardfs/packagelist.c index 68f8f4571615..e72fe83f7837 100644 --- a/fs/sdcardfs/packagelist.c +++ b/fs/sdcardfs/packagelist.c @@ -20,6 +20,7 @@ #include "sdcardfs.h" #include +#include #include #include #include @@ -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) { -- 2.34.1