Merge branch 'akpm' (patches from Andrew)

Merge misc fixes from Andrew Morton:
 "Three patches"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  include/linux/mmdebug.h: should include linux/bug.h
  mm/zswap: change incorrect strncmp use to strcmp
  proc: fix -ESRCH error when writing to /proc/$pid/coredump_filter

fs/proc/base.c

@@ -2494,6 +2494,7 @@ static ssize_t proc_coredump_filter_write(struct file *file,
 	mm = get_task_mm(task);
 	if (!mm)
 		goto out_no_mm;
+	ret = 0;
 
 	for (i = 0, mask = 1; i < MMF_DUMP_FILTER_BITS; i++, mask <<= 1) {
 		if (val & mask)

include/linux/mmdebug.h

 #ifndef LINUX_MM_DEBUG_H
 #define LINUX_MM_DEBUG_H 1
 
+#include <linux/bug.h>
 #include <linux/stringify.h>
 
 struct page;

mm/zswap.c

@@ -541,6 +541,7 @@ static struct zswap_pool *zswap_pool_last_get(void)
 	return last;
 }
 
+/* type and compressor must be null-terminated */
 static struct zswap_pool *zswap_pool_find_get(char *type, char *compressor)
 {
 	struct zswap_pool *pool;
@@ -548,10 +549,9 @@ static struct zswap_pool *zswap_pool_find_get(char *type, char *compressor)
 	assert_spin_locked(&zswap_pools_lock);
 
 	list_for_each_entry_rcu(pool, &zswap_pools, list) {
-		if (strncmp(pool->tfm_name, compressor, sizeof(pool->tfm_name)))
+		if (strcmp(pool->tfm_name, compressor))
 			continue;
-		if (strncmp(zpool_get_type(pool->zpool), type,
-			    sizeof(zswap_zpool_type)))
+		if (strcmp(zpool_get_type(pool->zpool), type))
 			continue;
 		/* if we can't get it, it's about to be destroyed */
 		if (!zswap_pool_get(pool))