filehash: move to separate allocation

We currently make it part of the thread structure allocation, but
there's no need to do that since we have smalloc available.

Signed-off-by: Jens Axboe <[email protected]>

Author: axboe

filehash.c

@@ -5,14 +5,15 @@
 #include "flist.h"
 #include "hash.h"
 #include "filehash.h"
+#include "smalloc.h"
 #include "lib/bloom.h"
 
 #define HASH_BUCKETS	512
 #define HASH_MASK	(HASH_BUCKETS - 1)
 
 #define BLOOM_SIZE	16*1024*1024
 
-unsigned int file_hash_size = HASH_BUCKETS * sizeof(struct flist_head);
+static unsigned int file_hash_size = HASH_BUCKETS * sizeof(struct flist_head);
 
 static struct flist_head *file_hash;
 static struct fio_mutex *hash_lock;
@@ -116,18 +117,20 @@ void file_hash_exit(void)
 	if (has_entries)
 		log_err("fio: file hash not empty on exit\n");
 
+	sfree(file_hash);
 	file_hash = NULL;
 	fio_mutex_remove(hash_lock);
 	hash_lock = NULL;
 	bloom_free(file_bloom);
 	file_bloom = NULL;
 }
 
-void file_hash_init(void *ptr)
+void file_hash_init(void)
 {
 	unsigned int i;
 
-	file_hash = ptr;
+	file_hash = smalloc(file_hash_size);
+
 	for (i = 0; i < HASH_BUCKETS; i++)
 		INIT_FLIST_HEAD(&file_hash[i]);
 

filehash.h

@@ -3,9 +3,7 @@
 
 #include "lib/types.h"
 
-extern unsigned int file_hash_size;
-
-extern void file_hash_init(void *);
+extern void file_hash_init(void);
 extern void file_hash_exit(void);
 extern struct fio_file *lookup_file_hash(const char *);
 extern struct fio_file *add_file_hash(struct fio_file *);

init.c

@@ -334,7 +334,6 @@ static int setup_thread_area(void)
 	do {
 		size_t size = max_jobs * sizeof(struct thread_data);
 
-		size += file_hash_size;
 		size += sizeof(unsigned int);
 
 #ifndef CONFIG_NO_SHM
@@ -366,11 +365,10 @@ static int setup_thread_area(void)
 #endif
 
 	memset(threads, 0, max_jobs * sizeof(struct thread_data));
-	hash = (void *) threads + max_jobs * sizeof(struct thread_data);
-	fio_debug_jobp = (void *) hash + file_hash_size;
+	fio_debug_jobp = (void *) threads + max_jobs * sizeof(struct thread_data);
 	*fio_debug_jobp = -1;
-	file_hash_init(hash);
 
+	file_hash_init();
 	flow_init();
 
 	return 0;