linux-kernel - [PATCH] f2fs-tools: remove power-of-two limitation of zoned device

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-next>] [day] [month] [year] [list]

Date:   Wed, 31 May 2023 10:52:13 -0700
From:   Daeho Jeong <daeho43@...il.com>
To:     linux-kernel@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net, kernel-team@...roid.com
Cc:     Daeho Jeong <daehojeong@...gle.com>
Subject: [PATCH] f2fs-tools: remove power-of-two limitation of zoned device

From: Daeho Jeong <daehojeong@...gle.com>

Remove power-of-two limitation for zoned device, since zoned devices
don't have it.

Signed-off-by: Daeho Jeong <daehojeong@...gle.com>
---
 fsck/mount.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/fsck/mount.c b/fsck/mount.c
index 4c74888..851a62b 100644
--- a/fsck/mount.c
+++ b/fsck/mount.c
@@ -56,19 +56,17 @@ static int get_zone_idx_from_dev(struct f2fs_sb_info *sbi,
 {
 	block_t seg_start_blkaddr = START_BLOCK(sbi, segno);
 
-	return (seg_start_blkaddr - c.devices[dev_idx].start_blkaddr) >>
-			log_base_2(sbi->segs_per_sec * sbi->blocks_per_seg);
+	return (seg_start_blkaddr - c.devices[dev_idx].start_blkaddr) /
+			(sbi->segs_per_sec * sbi->blocks_per_seg);
 }
 
 bool is_usable_seg(struct f2fs_sb_info *sbi, unsigned int segno)
 {
-	unsigned int secno = segno / sbi->segs_per_sec;
 	block_t seg_start = START_BLOCK(sbi, segno);
-	block_t blocks_per_sec = sbi->blocks_per_seg * sbi->segs_per_sec;
 	unsigned int dev_idx = get_device_idx(sbi, segno);
 	unsigned int zone_idx = get_zone_idx_from_dev(sbi, segno, dev_idx);
-	unsigned int sec_off = SM_I(sbi)->main_blkaddr >>
-						log_base_2(blocks_per_sec);
+	unsigned int sec_start_blkaddr = START_BLOCK(sbi,
+			GET_SEG_FROM_SEC(sbi, segno / sbi->segs_per_sec));
 
 	if (zone_idx < c.devices[dev_idx].nr_rnd_zones)
 		return true;
@@ -76,7 +74,7 @@ bool is_usable_seg(struct f2fs_sb_info *sbi, unsigned int segno)
 	if (c.devices[dev_idx].zoned_model != F2FS_ZONED_HM)
 		return true;
 
-	return seg_start < ((sec_off + secno) * blocks_per_sec) +
+	return seg_start < sec_start_blkaddr +
 				c.devices[dev_idx].zone_cap_blocks[zone_idx];
 }
 
-- 
2.41.0.rc0.172.g3f132b7071-goog