[PATCH 09/10] security: reduce stack footprint in loadpin_read_file()

From: Anton Suvorov
Date: Wed Jun 02 2021 - 11:31:57 EST


Stack usage reduced (measured with allyesconfig):

./security/loadpin/loadpin.c loadpin_read_file 200 56 -144

Signed-off-by: Anton Suvorov <warwish@xxxxxxxxxxxxxx>
---
security/loadpin/loadpin.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/security/loadpin/loadpin.c b/security/loadpin/loadpin.c
index b12f7d986b1e..ad4e6756c038 100644
--- a/security/loadpin/loadpin.c
+++ b/security/loadpin/loadpin.c
@@ -78,11 +78,8 @@ static void check_pinning_enforcement(struct super_block *mnt_sb)
* device, allow sysctl to change modes for testing.
*/
if (mnt_sb->s_bdev) {
- char bdev[BDEVNAME_SIZE];
-
ro = bdev_read_only(mnt_sb->s_bdev);
- bdevname(mnt_sb->s_bdev, bdev);
- pr_info("%s (%u:%u): %s\n", bdev,
+ pr_info("%pg (%u:%u): %s\n", mnt_sb->s_bdev,
MAJOR(mnt_sb->s_bdev->bd_dev),
MINOR(mnt_sb->s_bdev->bd_dev),
ro ? "read-only" : "writable");
--
2.25.1