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btrfs-progs: zoned: introduce sb_bytenr_to_sb_zone() 

Introduce sb_bytenr_to_sb_zone(), which converts the original superblock
location to the zone number of superblock log writing.

Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Naohiro Aota 2023-10-12 23:19:29 +09:00 committed by David Sterba
parent 4f2c9e8ade
commit 58148d5209
1 changed files with 16 additions and 12 deletions
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28
kernel-shared/zoned.c
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@ -478,6 +478,21 @@ static int sb_log_location(int fd, struct blk_zone *zones, int rw, u64 *bytenr_r
return 0;
}
static u32 sb_bytenr_to_sb_zone(u64 bytenr, int zone_size_shift)
{
int mirror = -1;
for (int i = 0; i < BTRFS_SUPER_MIRROR_MAX; i++) {
if (bytenr == btrfs_sb_offset(i)) {
mirror = i;
break;
}
}
ASSERT(mirror != -1);
return sb_zone_number(zone_size_shift, mirror);
}
size_t btrfs_sb_io(int fd, void *buf, off_t offset, int rw)
{
size_t count = BTRFS_SUPER_INFO_SIZE;
@ -489,8 +504,6 @@ size_t btrfs_sb_io(int fd, void *buf, off_t offset, int rw)
u32 zone_num;
u32 zone_size_sector;
size_t rep_size;
int mirror = -1;
int i;
int ret;
size_t ret_sz;
@ -532,16 +545,7 @@ size_t btrfs_sb_io(int fd, void *buf, off_t offset, int rw)
ASSERT(IS_ALIGNED(zone_size_sector, sb_size_sector));
for (i = 0; i < BTRFS_SUPER_MIRROR_MAX; i++) {
if (offset == btrfs_sb_offset(i)) {
mirror = i;
break;
}
}
ASSERT(mirror != -1);
zone_num = sb_zone_number(ilog2(zone_size_sector) + SECTOR_SHIFT,
mirror);
zone_num = sb_bytenr_to_sb_zone(offset, ilog2(zone_size_sector) + SECTOR_SHIFT);
rep_size = sizeof(struct blk_zone_report) + sizeof(struct blk_zone) * 2;
rep = calloc(1, rep_size);