From: Jaehoon Chung <jh80.chung@samsung.com>
Date: Thu, 2 Jan 2025 10:13:18 +0000 (+0900)
Subject: dm-bow: Use bdev_nr_sector to get the length of secstor
X-Git-Tag: accepted/tizen/unified/20250107.153645~3
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b23099dd3d1ad081a00fe41b0e40308cc2b294b9;p=platform%2Fkernel%2Flinux-tizen-modules-source.git

dm-bow: Use bdev_nr_sector to get the length of secstor

In Android Common kernel, bdev_nr_sectors() is using since v6.1 kernel.

Refer to https://android.googlesource.com/kernel/common
- android14-5.15 : i_size_read() >> SECTOR_SHIFT
- android14-6.1 / android15-6.6 / android16-6.12 : bdev_br_sectors()

Change-Id: Iecce56d6b98ee7f4714ccdd6dacb31f828795545
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
---

diff --git a/kernel/dm-bow.c b/kernel/dm-bow.c
index 3d577a3..2713b22 100644
--- a/kernel/dm-bow.c
+++ b/kernel/dm-bow.c
@@ -10,6 +10,7 @@
 #include <linux/crc32.h>
 #include <linux/dm-bufio.h>
 #include <linux/module.h>
+#include <linux/version.h>
 
 #define DM_MSG_PREFIX "bow"
 
@@ -1263,7 +1264,11 @@ int dm_bow_prepare_ioctl(struct dm_target *ti, struct block_device **bdev)
 
 	*bdev = dev->bdev;
 	/* Only pass ioctls through if the device sizes match exactly. */
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(6,1,0))
 	return ti->len != i_size_read(dev->bdev->bd_inode) >> SECTOR_SHIFT;
+#else
+	return ti->len != bdev_nr_sectors(dev->bdev);
+#endif
 }
 
 static int dm_bow_iterate_devices(struct dm_target *ti,