linux-kernel - [PATCH v2 06/12] mm/damon/sysfs: remove parameters of damon_sysfs_region

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20221026225943.100429-7-sj@kernel.org>
Date:   Wed, 26 Oct 2022 22:59:37 +0000
From:   SeongJae Park <sj@...nel.org>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     damon@...ts.linux.dev, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, SeongJae Park <sj@...nel.org>
Subject: [PATCH v2 06/12] mm/damon/sysfs: remove parameters of damon_sysfs_region_alloc()

'damon_sysfs_region_alloc()' is always called with zero-filled 'struct
damon_addr_range', because the start and end addresses should set by
users.  Remove unnecessary parameters of the function and simplify the
body by using 'kzalloc()'.

Signed-off-by: SeongJae Park <sj@...nel.org>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
---
 mm/damon/sysfs.c | 14 +++-----------
 1 file changed, 3 insertions(+), 11 deletions(-)

diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c
index b9183063bfea..e8bd7367d15b 100644
--- a/mm/damon/sysfs.c
+++ b/mm/damon/sysfs.c
@@ -1065,17 +1065,9 @@ struct damon_sysfs_region {
 	struct damon_addr_range ar;
 };
 
-static struct damon_sysfs_region *damon_sysfs_region_alloc(
-		struct damon_addr_range ar)
+static struct damon_sysfs_region *damon_sysfs_region_alloc(void)
 {
-	struct damon_sysfs_region *region = kmalloc(sizeof(*region),
-			GFP_KERNEL);
-
-	if (!region)
-		return NULL;
-	region->kobj = (struct kobject){};
-	region->ar = ar;
-	return region;
+	return kzalloc(sizeof(struct damon_sysfs_region), GFP_KERNEL);
 }
 
 static ssize_t start_show(struct kobject *kobj, struct kobj_attribute *attr,
@@ -1184,7 +1176,7 @@ static int damon_sysfs_regions_add_dirs(struct damon_sysfs_regions *regions,
 	regions->regions_arr = regions_arr;
 
 	for (i = 0; i < nr_regions; i++) {
-		region = damon_sysfs_region_alloc((struct damon_addr_range){});
+		region = damon_sysfs_region_alloc();
 		if (!region) {
 			damon_sysfs_regions_rm_dirs(regions);
 			return -ENOMEM;
-- 
2.25.1