Hi Aravind,
On 07/02, Aravind Ramesh wrote:
> NVMe Zoned Namespace devices can have zone-capacity less than zone-size.
> Zone-capacity indicates the number of usable blocks in a zone, if
> zone-capacity is less than zone-size, then the segments which start
> at/after zone-capacity are considered unusable. Only those segments
> which start before the zone-capacity are considered as usable and added
> to the free_segment_count and free_segment_bitmap of the kernel.
>
> Allow fsck to find the free_segment_count based on the zone-capacity and
> compare with checkpoint values.
>
> Signed-off-by: Aravind Ramesh <[email protected]>
> Signed-off-by: Shin'ichiro Kawasaki <[email protected]>
> ---
> fsck/fsck.c | 5 ++--
> fsck/fsck.h | 2 ++
> fsck/mount.c | 75 ++++++++++++++++++++++++++++++++++++++++++++++++++--
> 3 files changed, 78 insertions(+), 4 deletions(-)
>
> diff --git a/fsck/fsck.c b/fsck/fsck.c
> index e110f3d..ba2340d 100644
> --- a/fsck/fsck.c
> +++ b/fsck/fsck.c
> @@ -1905,11 +1905,12 @@ int fsck_chk_meta(struct f2fs_sb_info *sbi)
> if (IS_NODESEG(se->type))
> sit_node_blks += se->valid_blocks;
> }
> - if (fsck->chk.sit_free_segs + sit_valid_segs != TOTAL_SEGS(sbi)) {
> + if (fsck->chk.sit_free_segs + sit_valid_segs !=
> + get_usable_seg_count(sbi)) {
> ASSERT_MSG("SIT usage does not match: sit_free_segs %u, "
> "sit_valid_segs %u, total_segs %u",
> fsck->chk.sit_free_segs, sit_valid_segs,
> - TOTAL_SEGS(sbi));
> + get_usable_seg_count(sbi));
> return -EINVAL;
> }
>
> diff --git a/fsck/fsck.h b/fsck/fsck.h
> index bc6a435..e86730c 100644
> --- a/fsck/fsck.h
> +++ b/fsck/fsck.h
> @@ -224,6 +224,8 @@ extern u32 update_nat_bits_flags(struct f2fs_super_block
> *,
> struct f2fs_checkpoint *, u32);
> extern void write_nat_bits(struct f2fs_sb_info *, struct f2fs_super_block *,
> struct f2fs_checkpoint *, int);
> +extern unsigned int get_usable_seg_count(struct f2fs_sb_info *);
> +extern bool is_usable_seg(struct f2fs_sb_info *, unsigned int);
>
> /* dump.c */
> struct dump_option {
> diff --git a/fsck/mount.c b/fsck/mount.c
> index d0f2eab..72ca0cb 100644
> --- a/fsck/mount.c
> +++ b/fsck/mount.c
> @@ -30,6 +30,76 @@
> #define ACL_OTHER (0x20)
> #endif
>
> +static int get_device_idx(struct f2fs_sb_info *sbi, u_int32_t segno)
> +{
> + block_t seg_start_blkaddr;
> + int i;
> +
> + seg_start_blkaddr = SM_I(sbi)->main_blkaddr +
> + segno * DEFAULT_BLOCKS_PER_SEGMENT;
> + for (i = 0; i < c.ndevs; i++)
> + if (c.devices[i].start_blkaddr <= seg_start_blkaddr &&
> + c.devices[i].end_blkaddr > seg_start_blkaddr)
> + return i;
> + return 0;
> +}
> +
> +#ifdef HAVE_LINUX_BLKZONED_H
> +
> +static int get_zone_idx_from_dev(struct f2fs_sb_info *sbi,
> + u_int32_t segno, u_int32_t dev_idx)
> +{
> + 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);
> +}
> +
> +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);
> +
> + if (zone_idx < c.devices[dev_idx].nr_rnd_zones)
> + return true;
> +
> + if (c.devices[dev_idx].zoned_model != F2FS_ZONED_HM)
> + return true;
> +
> + return seg_start < ((sec_off + secno) * blocks_per_sec) +
> + c.devices[dev_idx].zone_cap_blocks[zone_idx];
> +}
> +
> +unsigned int get_usable_seg_count(struct f2fs_sb_info *sbi)
> +{
> + unsigned int i, usable_seg_count = 0;
> +
> + for (i = 0; i < TOTAL_SEGS(sbi); i++)
> + if (is_usable_seg(sbi, i))
> + usable_seg_count++;
> +
> + return usable_seg_count;
> +}
> +
> +#else
> +
> +bool is_usable_seg(struct f2fs_sb_info *sbi, unsigned int segno)
I've applied the below small change to avoid Android build error.
--- a/fsck/mount.c
+++ b/fsck/mount.c
@@ -88,7 +88,7 @@ unsigned int get_usable_seg_count(struct f2fs_sb_info *sbi)
#else
-bool is_usable_seg(struct f2fs_sb_info *sbi, unsigned int segno)
+bool is_usable_seg(struct f2fs_sb_info *UNUSED(sbi), unsigned int
UNUSED(segno))
{
return true;
}
Thanks,
> +{
> + return true;
> +}
> +
> +unsigned int get_usable_seg_count(struct f2fs_sb_info *sbi)
> +{
> + return TOTAL_SEGS(sbi);
> +}
> +
> +#endif
> +
> u32 get_free_segments(struct f2fs_sb_info *sbi)
> {
> u32 i, free_segs = 0;
> @@ -37,7 +107,8 @@ u32 get_free_segments(struct f2fs_sb_info *sbi)
> for (i = 0; i < TOTAL_SEGS(sbi); i++) {
> struct seg_entry *se = get_seg_entry(sbi, i);
>
> - if (se->valid_blocks == 0x0 && !IS_CUR_SEGNO(sbi, i))
> + if (se->valid_blocks == 0x0 && !IS_CUR_SEGNO(sbi, i) &&
> + is_usable_seg(sbi, i))
> free_segs++;
> }
> return free_segs;
> @@ -2337,7 +2408,7 @@ void build_sit_area_bitmap(struct f2fs_sb_info *sbi)
> memcpy(ptr, se->cur_valid_map, SIT_VBLOCK_MAP_SIZE);
> ptr += SIT_VBLOCK_MAP_SIZE;
>
> - if (se->valid_blocks == 0x0) {
> + if (se->valid_blocks == 0x0 && is_usable_seg(sbi, segno)) {
> if (le32_to_cpu(sbi->ckpt->cur_node_segno[0]) == segno
> ||
> le32_to_cpu(sbi->ckpt->cur_data_segno[0]) ==
> segno ||
> le32_to_cpu(sbi->ckpt->cur_node_segno[1]) ==
> segno ||
> --
> 2.19.1
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