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Date: Tue, 20 Feb 2024 11:01:38 -0800
From: Jaegeuk Kim <jaegeuk@kernel.org>
To: Chao Yu <chao@kernel.org>
Cc: daehojeong@google.com, linux-f2fs-devel@lists.sourceforge.net,
	linux-kernel@vger.kernel.org,
	Aravind Ramesh <aravind.ramesh@wdc.com>,
	Damien Le Moal <damien.lemoal@wdc.com>,
	Niklas Cassel <niklas.cassel@wdc.com>
Subject: Re: [f2fs-dev] [PATCH 3/3 v2] f2fs: kill zone-capacity support
Message-ID: <ZdT3EqOB-wXM1NLm@google.com>
References: <20240207005105.3744811-1-jaegeuk@kernel.org>
 <20240207005105.3744811-3-jaegeuk@kernel.org>
 <ZcQSV0HyTwoiW8os@google.com>
 <f174092a-192a-47f9-a1d4-14d86bba266c@kernel.org>
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In-Reply-To: <f174092a-192a-47f9-a1d4-14d86bba266c@kernel.org>

On 02/20, Chao Yu wrote:
> Jaegeuk, Daeho,
> 
> Do we need Cc WD guys? Not sure whether they need this feature...

CC'ed WDC folks.

> 
> For ZUFS: 1) will it only exports 2MB-aligned zone size, and 2) its zone
> capacity equals zone size?

Yeah, I think f2fs just needs to check 2MB alignment only.

> 
> Thanks,
> 
> On 2024/2/8 7:29, Jaegeuk Kim wrote:
> > Since we don't see any user, let's kill.
> > 
> > Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
> > ---
> > 
> >   from v1:
> >    - keep setting the seq bit
> > 
> >   Documentation/ABI/testing/sysfs-fs-f2fs |  6 --
> >   fs/f2fs/debug.c                         |  7 +-
> >   fs/f2fs/f2fs.h                          |  5 --
> >   fs/f2fs/file.c                          |  6 +-
> >   fs/f2fs/gc.c                            | 33 +++------
> >   fs/f2fs/gc.h                            | 26 -------
> >   fs/f2fs/segment.c                       | 93 +++----------------------
> >   fs/f2fs/segment.h                       | 41 ++++-------
> >   fs/f2fs/super.c                         | 16 ++---
> >   fs/f2fs/sysfs.c                         |  6 --
> >   10 files changed, 44 insertions(+), 195 deletions(-)
> > 
> > diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs
> > index 48c135e24eb5..dff8c87d87dd 100644
> > --- a/Documentation/ABI/testing/sysfs-fs-f2fs
> > +++ b/Documentation/ABI/testing/sysfs-fs-f2fs
> > @@ -628,12 +628,6 @@ Contact:	"Jaegeuk Kim" <jaegeuk@kernel.org>
> >   Description:	Controls max # of node block writes to be used for roll forward
> >   		recovery. This can limit the roll forward recovery time.
> > -What:		/sys/fs/f2fs/<disk>/unusable_blocks_per_sec
> > -Date:		June 2022
> > -Contact:	"Jaegeuk Kim" <jaegeuk@kernel.org>
> > -Description:	Shows the number of unusable blocks in a section which was defined by
> > -		the zone capacity reported by underlying zoned device.
> > -
> >   What:		/sys/fs/f2fs/<disk>/current_atomic_write
> >   Date:		July 2022
> >   Contact:	"Daeho Jeong" <daehojeong@google.com>
> > diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c
> > index 0d02224b99b7..6617195bd27e 100644
> > --- a/fs/f2fs/debug.c
> > +++ b/fs/f2fs/debug.c
> > @@ -32,21 +32,20 @@ static struct dentry *f2fs_debugfs_root;
> >   void f2fs_update_sit_info(struct f2fs_sb_info *sbi)
> >   {
> >   	struct f2fs_stat_info *si = F2FS_STAT(sbi);
> > -	unsigned long long blks_per_sec, hblks_per_sec, total_vblocks;
> > +	unsigned long long hblks_per_sec, total_vblocks;
> >   	unsigned long long bimodal, dist;
> >   	unsigned int segno, vblocks;
> >   	int ndirty = 0;
> >   	bimodal = 0;
> >   	total_vblocks = 0;
> > -	blks_per_sec = CAP_BLKS_PER_SEC(sbi);
> > -	hblks_per_sec = blks_per_sec / 2;
> > +	hblks_per_sec = BLKS_PER_SEC(sbi) / 2;
> >   	for (segno = 0; segno < MAIN_SEGS(sbi); segno += SEGS_PER_SEC(sbi)) {
> >   		vblocks = get_valid_blocks(sbi, segno, true);
> >   		dist = abs(vblocks - hblks_per_sec);
> >   		bimodal += dist * dist;
> > -		if (vblocks > 0 && vblocks < blks_per_sec) {
> > +		if (vblocks > 0 && vblocks < BLKS_PER_SEC(sbi)) {
> >   			total_vblocks += vblocks;
> >   			ndirty++;
> >   		}
> > diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
> > index 9a9e858083af..34d718301392 100644
> > --- a/fs/f2fs/f2fs.h
> > +++ b/fs/f2fs/f2fs.h
> > @@ -1618,7 +1618,6 @@ struct f2fs_sb_info {
> >   	unsigned int meta_ino_num;		/* meta inode number*/
> >   	unsigned int log_blocks_per_seg;	/* log2 blocks per segment */
> >   	unsigned int blocks_per_seg;		/* blocks per segment */
> > -	unsigned int unusable_blocks_per_sec;	/* unusable blocks per section */
> >   	unsigned int segs_per_sec;		/* segments per section */
> >   	unsigned int secs_per_zone;		/* sections per zone */
> >   	unsigned int total_sections;		/* total section count */
> > @@ -3743,10 +3742,6 @@ void f2fs_destroy_segment_manager(struct f2fs_sb_info *sbi);
> >   int __init f2fs_create_segment_manager_caches(void);
> >   void f2fs_destroy_segment_manager_caches(void);
> >   int f2fs_rw_hint_to_seg_type(enum rw_hint hint);
> > -unsigned int f2fs_usable_segs_in_sec(struct f2fs_sb_info *sbi,
> > -			unsigned int segno);
> > -unsigned int f2fs_usable_blks_in_seg(struct f2fs_sb_info *sbi,
> > -			unsigned int segno);
> >   #define DEF_FRAGMENT_SIZE	4
> >   #define MIN_FRAGMENT_SIZE	1
> > diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
> > index b0be576b2090..2c13b340c8a0 100644
> > --- a/fs/f2fs/file.c
> > +++ b/fs/f2fs/file.c
> > @@ -1717,7 +1717,7 @@ static int f2fs_expand_inode_data(struct inode *inode, loff_t offset,
> >   		return 0;
> >   	if (f2fs_is_pinned_file(inode)) {
> > -		block_t sec_blks = CAP_BLKS_PER_SEC(sbi);
> > +		block_t sec_blks = BLKS_PER_SEC(sbi);
> >   		block_t sec_len = roundup(map.m_len, sec_blks);
> >   		map.m_len = sec_blks;
> > @@ -2525,7 +2525,7 @@ static int __f2fs_ioc_gc_range(struct file *filp, struct f2fs_gc_range *range)
> >   			ret = -EAGAIN;
> >   		goto out;
> >   	}
> > -	range->start += CAP_BLKS_PER_SEC(sbi);
> > +	range->start += BLKS_PER_SEC(sbi);
> >   	if (range->start <= end)
> >   		goto do_more;
> >   out:
> > @@ -2654,7 +2654,7 @@ static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
> >   		goto out;
> >   	}
> > -	sec_num = DIV_ROUND_UP(total, CAP_BLKS_PER_SEC(sbi));
> > +	sec_num = DIV_ROUND_UP(total, BLKS_PER_SEC(sbi));
> >   	/*
> >   	 * make sure there are enough free section for LFS allocation, this can
> > diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
> > index d61a60c1c844..0a1a50b68df8 100644
> > --- a/fs/f2fs/gc.c
> > +++ b/fs/f2fs/gc.c
> > @@ -340,14 +340,13 @@ static unsigned int get_cb_cost(struct f2fs_sb_info *sbi, unsigned int segno)
> >   	unsigned char age = 0;
> >   	unsigned char u;
> >   	unsigned int i;
> > -	unsigned int usable_segs_per_sec = f2fs_usable_segs_in_sec(sbi, segno);
> > -	for (i = 0; i < usable_segs_per_sec; i++)
> > +	for (i = 0; i < SEGS_PER_SEC(sbi); i++)
> >   		mtime += get_seg_entry(sbi, start + i)->mtime;
> >   	vblocks = get_valid_blocks(sbi, segno, true);
> > -	mtime = div_u64(mtime, usable_segs_per_sec);
> > -	vblocks = div_u64(vblocks, usable_segs_per_sec);
> > +	mtime = div_u64(mtime, SEGS_PER_SEC(sbi));
> > +	vblocks = div_u64(vblocks, SEGS_PER_SEC(sbi));
> >   	u = (vblocks * 100) >> sbi->log_blocks_per_seg;
> > @@ -530,7 +529,6 @@ static void atgc_lookup_victim(struct f2fs_sb_info *sbi,
> >   	unsigned long long age, u, accu;
> >   	unsigned long long max_mtime = sit_i->dirty_max_mtime;
> >   	unsigned long long min_mtime = sit_i->dirty_min_mtime;
> > -	unsigned int sec_blocks = CAP_BLKS_PER_SEC(sbi);
> >   	unsigned int vblocks;
> >   	unsigned int dirty_threshold = max(am->max_candidate_count,
> >   					am->candidate_ratio *
> > @@ -560,13 +558,13 @@ static void atgc_lookup_victim(struct f2fs_sb_info *sbi,
> >   	/* age = 10000 * x% * 60 */
> >   	age = div64_u64(accu * (max_mtime - ve->mtime), total_time) *
> > -								age_weight;
> > +							age_weight;
> >   	vblocks = get_valid_blocks(sbi, ve->segno, true);
> > -	f2fs_bug_on(sbi, !vblocks || vblocks == sec_blocks);
> > +	f2fs_bug_on(sbi, !vblocks || vblocks == BLKS_PER_SEC(sbi));
> >   	/* u = 10000 * x% * 40 */
> > -	u = div64_u64(accu * (sec_blocks - vblocks), sec_blocks) *
> > +	u = div64_u64(accu * (BLKS_PER_SEC(sbi) - vblocks), BLKS_PER_SEC(sbi)) *
> >   							(100 - age_weight);
> >   	f2fs_bug_on(sbi, age + u >= UINT_MAX);
> > @@ -1003,7 +1001,6 @@ static int gc_node_segment(struct f2fs_sb_info *sbi,
> >   	int phase = 0;
> >   	bool fggc = (gc_type == FG_GC);
> >   	int submitted = 0;
> > -	unsigned int usable_blks_in_seg = f2fs_usable_blks_in_seg(sbi, segno);
> >   	start_addr = START_BLOCK(sbi, segno);
> > @@ -1013,7 +1010,7 @@ static int gc_node_segment(struct f2fs_sb_info *sbi,
> >   	if (fggc && phase == 2)
> >   		atomic_inc(&sbi->wb_sync_req[NODE]);
> > -	for (off = 0; off < usable_blks_in_seg; off++, entry++) {
> > +	for (off = 0; off < BLKS_PER_SEG(sbi); off++, entry++) {
> >   		nid_t nid = le32_to_cpu(entry->nid);
> >   		struct page *node_page;
> >   		struct node_info ni;
> > @@ -1498,14 +1495,13 @@ static int gc_data_segment(struct f2fs_sb_info *sbi, struct f2fs_summary *sum,
> >   	int off;
> >   	int phase = 0;
> >   	int submitted = 0;
> > -	unsigned int usable_blks_in_seg = f2fs_usable_blks_in_seg(sbi, segno);
> >   	start_addr = START_BLOCK(sbi, segno);
> >   next_step:
> >   	entry = sum;
> > -	for (off = 0; off < usable_blks_in_seg; off++, entry++) {
> > +	for (off = 0; off < BLKS_PER_SEG(sbi); off++, entry++) {
> >   		struct page *data_page;
> >   		struct inode *inode;
> >   		struct node_info dni; /* dnode info for the data */
> > @@ -1520,7 +1516,7 @@ static int gc_data_segment(struct f2fs_sb_info *sbi, struct f2fs_summary *sum,
> >   		 */
> >   		if ((gc_type == BG_GC && has_not_enough_free_secs(sbi, 0, 0)) ||
> >   			(!force_migrate && get_valid_blocks(sbi, segno, true) ==
> > -							CAP_BLKS_PER_SEC(sbi)))
> > +							BLKS_PER_SEC(sbi)))
> >   			return submitted;
> >   		if (check_valid_map(sbi, segno, off) == 0)
> > @@ -1680,15 +1676,6 @@ static int do_garbage_collect(struct f2fs_sb_info *sbi,
> >   	if (__is_large_section(sbi))
> >   		end_segno = rounddown(end_segno, SEGS_PER_SEC(sbi));
> > -	/*
> > -	 * zone-capacity can be less than zone-size in zoned devices,
> > -	 * resulting in less than expected usable segments in the zone,
> > -	 * calculate the end segno in the zone which can be garbage collected
> > -	 */
> > -	if (f2fs_sb_has_blkzoned(sbi))
> > -		end_segno -= SEGS_PER_SEC(sbi) -
> > -					f2fs_usable_segs_in_sec(sbi, segno);
> > -
> >   	sanity_check_seg_type(sbi, get_seg_entry(sbi, segno)->type);
> >   	/* readahead multi ssa blocks those have contiguous address */
> > @@ -1862,7 +1849,7 @@ int f2fs_gc(struct f2fs_sb_info *sbi, struct f2fs_gc_control *gc_control)
> >   	total_freed += seg_freed;
> > -	if (seg_freed == f2fs_usable_segs_in_sec(sbi, segno)) {
> > +	if (seg_freed == SEGS_PER_SEC(sbi)) {
> >   		sec_freed++;
> >   		total_sec_freed++;
> >   	}
> > diff --git a/fs/f2fs/gc.h b/fs/f2fs/gc.h
> > index 28a00942802c..e4a75aa4160f 100644
> > --- a/fs/f2fs/gc.h
> > +++ b/fs/f2fs/gc.h
> > @@ -68,34 +68,8 @@ struct victim_entry {
> >    * inline functions
> >    */
> > -/*
> > - * On a Zoned device zone-capacity can be less than zone-size and if
> > - * zone-capacity is not aligned to f2fs segment size(2MB), then the segment
> > - * starting just before zone-capacity has some blocks spanning across the
> > - * zone-capacity, these blocks are not usable.
> > - * Such spanning segments can be in free list so calculate the sum of usable
> > - * blocks in currently free segments including normal and spanning segments.
> > - */
> > -static inline block_t free_segs_blk_count_zoned(struct f2fs_sb_info *sbi)
> > -{
> > -	block_t free_seg_blks = 0;
> > -	struct free_segmap_info *free_i = FREE_I(sbi);
> > -	int j;
> > -
> > -	spin_lock(&free_i->segmap_lock);
> > -	for (j = 0; j < MAIN_SEGS(sbi); j++)
> > -		if (!test_bit(j, free_i->free_segmap))
> > -			free_seg_blks += f2fs_usable_blks_in_seg(sbi, j);
> > -	spin_unlock(&free_i->segmap_lock);
> > -
> > -	return free_seg_blks;
> > -}
> > -
> >   static inline block_t free_segs_blk_count(struct f2fs_sb_info *sbi)
> >   {
> > -	if (f2fs_sb_has_blkzoned(sbi))
> > -		return free_segs_blk_count_zoned(sbi);
> > -
> >   	return free_segments(sbi) << sbi->log_blocks_per_seg;
> >   }
> > diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
> > index 8d330664b925..1013276ad12a 100644
> > --- a/fs/f2fs/segment.c
> > +++ b/fs/f2fs/segment.c
> > @@ -769,7 +769,7 @@ static void __locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno,
> >   				get_valid_blocks(sbi, segno, true);
> >   			f2fs_bug_on(sbi, unlikely(!valid_blocks ||
> > -					valid_blocks == CAP_BLKS_PER_SEC(sbi)));
> > +					valid_blocks == BLKS_PER_SEC(sbi)));
> >   			if (!IS_CURSEC(sbi, secno))
> >   				set_bit(secno, dirty_i->dirty_secmap);
> > @@ -805,7 +805,7 @@ static void __remove_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno,
> >   			unsigned int secno = GET_SEC_FROM_SEG(sbi, segno);
> >   			if (!valid_blocks ||
> > -					valid_blocks == CAP_BLKS_PER_SEC(sbi)) {
> > +					valid_blocks == BLKS_PER_SEC(sbi)) {
> >   				clear_bit(secno, dirty_i->dirty_secmap);
> >   				return;
> >   			}
> > @@ -825,22 +825,20 @@ static void locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno)
> >   {
> >   	struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
> >   	unsigned short valid_blocks, ckpt_valid_blocks;
> > -	unsigned int usable_blocks;
> >   	if (segno == NULL_SEGNO || IS_CURSEG(sbi, segno))
> >   		return;
> > -	usable_blocks = f2fs_usable_blks_in_seg(sbi, segno);
> >   	mutex_lock(&dirty_i->seglist_lock);
> >   	valid_blocks = get_valid_blocks(sbi, segno, false);
> >   	ckpt_valid_blocks = get_ckpt_valid_blocks(sbi, segno, false);
> >   	if (valid_blocks == 0 && (!is_sbi_flag_set(sbi, SBI_CP_DISABLED) ||
> > -		ckpt_valid_blocks == usable_blocks)) {
> > +		ckpt_valid_blocks == BLKS_PER_SEG(sbi))) {
> >   		__locate_dirty_segment(sbi, segno, PRE);
> >   		__remove_dirty_segment(sbi, segno, DIRTY);
> > -	} else if (valid_blocks < usable_blocks) {
> > +	} else if (valid_blocks < BLKS_PER_SEG(sbi)) {
> >   		__locate_dirty_segment(sbi, segno, DIRTY);
> >   	} else {
> >   		/* Recovery routine with SSR needs this */
> > @@ -882,12 +880,7 @@ block_t f2fs_get_unusable_blocks(struct f2fs_sb_info *sbi)
> >   	mutex_lock(&dirty_i->seglist_lock);
> >   	for_each_set_bit(segno, dirty_i->dirty_segmap[DIRTY], MAIN_SEGS(sbi)) {
> >   		se = get_seg_entry(sbi, segno);
> > -		if (IS_NODESEG(se->type))
> > -			holes[NODE] += f2fs_usable_blks_in_seg(sbi, segno) -
> > -							se->valid_blocks;
> > -		else
> > -			holes[DATA] += f2fs_usable_blks_in_seg(sbi, segno) -
> > -							se->valid_blocks;
> > +		holes[SE_PAGETYPE(se)] += BLKS_PER_SEG(sbi) - se->valid_blocks;
> >   	}
> >   	mutex_unlock(&dirty_i->seglist_lock);
> > @@ -2406,8 +2399,7 @@ static void update_sit_entry(struct f2fs_sb_info *sbi, block_t blkaddr, int del)
> >   	new_vblocks = se->valid_blocks + del;
> >   	offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr);
> > -	f2fs_bug_on(sbi, (new_vblocks < 0 ||
> > -			(new_vblocks > f2fs_usable_blks_in_seg(sbi, segno))));
> > +	f2fs_bug_on(sbi, new_vblocks < 0 || new_vblocks > BLKS_PER_SEG(sbi));
> >   	se->valid_blocks = new_vblocks;
> > @@ -3449,7 +3441,7 @@ void f2fs_allocate_data_block(struct f2fs_sb_info *sbi, struct page *page,
> >   		if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_BLK)
> >   			f2fs_randomize_chunk(sbi, curseg);
> >   	}
> > -	if (curseg->next_blkoff >= f2fs_usable_blks_in_seg(sbi, curseg->segno))
> > +	if (curseg->next_blkoff >= BLKS_PER_SEG(sbi))
> >   		segment_full = true;
> >   	stat_inc_block_count(sbi, curseg);
> > @@ -4687,8 +4679,6 @@ static void init_free_segmap(struct f2fs_sb_info *sbi)
> >   	struct seg_entry *sentry;
> >   	for (start = 0; start < MAIN_SEGS(sbi); start++) {
> > -		if (f2fs_usable_blks_in_seg(sbi, start) == 0)
> > -			continue;
> >   		sentry = get_seg_entry(sbi, start);
> >   		if (!sentry->valid_blocks)
> >   			__set_free(sbi, start);
> > @@ -4710,7 +4700,7 @@ static void init_dirty_segmap(struct f2fs_sb_info *sbi)
> >   	struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
> >   	struct free_segmap_info *free_i = FREE_I(sbi);
> >   	unsigned int segno = 0, offset = 0, secno;
> > -	block_t valid_blocks, usable_blks_in_seg;
> > +	block_t valid_blocks;
> >   	while (1) {
> >   		/* find dirty segment based on free segmap */
> > @@ -4719,10 +4709,9 @@ static void init_dirty_segmap(struct f2fs_sb_info *sbi)
> >   			break;
> >   		offset = segno + 1;
> >   		valid_blocks = get_valid_blocks(sbi, segno, false);
> > -		usable_blks_in_seg = f2fs_usable_blks_in_seg(sbi, segno);
> > -		if (valid_blocks == usable_blks_in_seg || !valid_blocks)
> > +		if (valid_blocks == BLKS_PER_SEG(sbi) || !valid_blocks)
> >   			continue;
> > -		if (valid_blocks > usable_blks_in_seg) {
> > +		if (valid_blocks > BLKS_PER_SEG(sbi)) {
> >   			f2fs_bug_on(sbi, 1);
> >   			continue;
> >   		}
> > @@ -4739,7 +4728,7 @@ static void init_dirty_segmap(struct f2fs_sb_info *sbi)
> >   		valid_blocks = get_valid_blocks(sbi, segno, true);
> >   		secno = GET_SEC_FROM_SEG(sbi, segno);
> > -		if (!valid_blocks || valid_blocks == CAP_BLKS_PER_SEC(sbi))
> > +		if (!valid_blocks || valid_blocks == BLKS_PER_SEC(sbi))
> >   			continue;
> >   		if (IS_CURSEC(sbi, secno))
> >   			continue;
> > @@ -5097,42 +5086,6 @@ int f2fs_check_write_pointer(struct f2fs_sb_info *sbi)
> >   	return 0;
> >   }
> > -
> > -/*
> > - * Return the number of usable blocks in a segment. The number of blocks
> > - * returned is always equal to the number of blocks in a segment for
> > - * segments fully contained within a sequential zone capacity or a
> > - * conventional zone. For segments partially contained in a sequential
> > - * zone capacity, the number of usable blocks up to the zone capacity
> > - * is returned. 0 is returned in all other cases.
> > - */
> > -static inline unsigned int f2fs_usable_zone_blks_in_seg(
> > -			struct f2fs_sb_info *sbi, unsigned int segno)
> > -{
> > -	block_t seg_start, sec_start_blkaddr, sec_cap_blkaddr;
> > -	unsigned int secno;
> > -
> > -	if (!sbi->unusable_blocks_per_sec)
> > -		return BLKS_PER_SEG(sbi);
> > -
> > -	secno = GET_SEC_FROM_SEG(sbi, segno);
> > -	seg_start = START_BLOCK(sbi, segno);
> > -	sec_start_blkaddr = START_BLOCK(sbi, GET_SEG_FROM_SEC(sbi, secno));
> > -	sec_cap_blkaddr = sec_start_blkaddr + CAP_BLKS_PER_SEC(sbi);
> > -
> > -	/*
> > -	 * If segment starts before zone capacity and spans beyond
> > -	 * zone capacity, then usable blocks are from seg start to
> > -	 * zone capacity. If the segment starts after the zone capacity,
> > -	 * then there are no usable blocks.
> > -	 */
> > -	if (seg_start >= sec_cap_blkaddr)
> > -		return 0;
> > -	if (seg_start + BLKS_PER_SEG(sbi) > sec_cap_blkaddr)
> > -		return sec_cap_blkaddr - seg_start;
> > -
> > -	return BLKS_PER_SEG(sbi);
> > -}
> >   #else
> >   int f2fs_fix_curseg_write_pointer(struct f2fs_sb_info *sbi)
> >   {
> > @@ -5143,31 +5096,7 @@ int f2fs_check_write_pointer(struct f2fs_sb_info *sbi)
> >   {
> >   	return 0;
> >   }
> > -
> > -static inline unsigned int f2fs_usable_zone_blks_in_seg(struct f2fs_sb_info *sbi,
> > -							unsigned int segno)
> > -{
> > -	return 0;
> > -}
> > -
> >   #endif
> > -unsigned int f2fs_usable_blks_in_seg(struct f2fs_sb_info *sbi,
> > -					unsigned int segno)
> > -{
> > -	if (f2fs_sb_has_blkzoned(sbi))
> > -		return f2fs_usable_zone_blks_in_seg(sbi, segno);
> > -
> > -	return BLKS_PER_SEG(sbi);
> > -}
> > -
> > -unsigned int f2fs_usable_segs_in_sec(struct f2fs_sb_info *sbi,
> > -					unsigned int segno)
> > -{
> > -	if (f2fs_sb_has_blkzoned(sbi))
> > -		return CAP_SEGS_PER_SEC(sbi);
> > -
> > -	return SEGS_PER_SEC(sbi);
> > -}
> >   /*
> >    * Update min, max modified time for cost-benefit GC algorithm
> > diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h
> > index 96cec83012f1..b725ae1a7043 100644
> > --- a/fs/f2fs/segment.h
> > +++ b/fs/f2fs/segment.h
> > @@ -99,12 +99,6 @@ static inline void sanity_check_seg_type(struct f2fs_sb_info *sbi,
> >   	((!__is_valid_data_blkaddr(blk_addr)) ?			\
> >   	NULL_SEGNO : GET_L2R_SEGNO(FREE_I(sbi),			\
> >   		GET_SEGNO_FROM_SEG0(sbi, blk_addr)))
> > -#define CAP_BLKS_PER_SEC(sbi)					\
> > -	((sbi)->segs_per_sec * (sbi)->blocks_per_seg -		\
> > -	 (sbi)->unusable_blocks_per_sec)
> > -#define CAP_SEGS_PER_SEC(sbi)					\
> > -	((sbi)->segs_per_sec - ((sbi)->unusable_blocks_per_sec >>\
> > -	(sbi)->log_blocks_per_seg))
> >   #define GET_SEC_FROM_SEG(sbi, segno)				\
> >   	(((segno) == -1) ? -1 : (segno) / (sbi)->segs_per_sec)
> >   #define GET_SEG_FROM_SEC(sbi, secno)				\
> > @@ -440,7 +434,6 @@ static inline void __set_free(struct f2fs_sb_info *sbi, unsigned int segno)
> >   	unsigned int secno = GET_SEC_FROM_SEG(sbi, segno);
> >   	unsigned int start_segno = GET_SEG_FROM_SEC(sbi, secno);
> >   	unsigned int next;
> > -	unsigned int usable_segs = f2fs_usable_segs_in_sec(sbi, segno);
> >   	spin_lock(&free_i->segmap_lock);
> >   	clear_bit(segno, free_i->free_segmap);
> > @@ -448,7 +441,7 @@ static inline void __set_free(struct f2fs_sb_info *sbi, unsigned int segno)
> >   	next = find_next_bit(free_i->free_segmap,
> >   			start_segno + SEGS_PER_SEC(sbi), start_segno);
> > -	if (next >= start_segno + usable_segs) {
> > +	if (next >= start_segno + SEGS_PER_SEC(sbi)) {
> >   		clear_bit(secno, free_i->free_secmap);
> >   		free_i->free_sections++;
> >   	}
> > @@ -474,7 +467,6 @@ static inline void __set_test_and_free(struct f2fs_sb_info *sbi,
> >   	unsigned int secno = GET_SEC_FROM_SEG(sbi, segno);
> >   	unsigned int start_segno = GET_SEG_FROM_SEC(sbi, secno);
> >   	unsigned int next;
> > -	unsigned int usable_segs = f2fs_usable_segs_in_sec(sbi, segno);
> >   	spin_lock(&free_i->segmap_lock);
> >   	if (test_and_clear_bit(segno, free_i->free_segmap)) {
> > @@ -484,7 +476,7 @@ static inline void __set_test_and_free(struct f2fs_sb_info *sbi,
> >   			goto skip_free;
> >   		next = find_next_bit(free_i->free_segmap,
> >   				start_segno + SEGS_PER_SEC(sbi), start_segno);
> > -		if (next >= start_segno + usable_segs) {
> > +		if (next >= start_segno + SEGS_PER_SEC(sbi)) {
> >   			if (test_and_clear_bit(secno, free_i->free_secmap))
> >   				free_i->free_sections++;
> >   		}
> > @@ -577,16 +569,15 @@ static inline bool has_curseg_enough_space(struct f2fs_sb_info *sbi,
> >   	/* check current node segment */
> >   	for (i = CURSEG_HOT_NODE; i <= CURSEG_COLD_NODE; i++) {
> >   		segno = CURSEG_I(sbi, i)->segno;
> > -		left_blocks = f2fs_usable_blks_in_seg(sbi, segno) -
> > +		left_blocks = BLKS_PER_SEG(sbi) -
> >   				get_seg_entry(sbi, segno)->ckpt_valid_blocks;
> > -
> >   		if (node_blocks > left_blocks)
> >   			return false;
> >   	}
> >   	/* check current data segment */
> >   	segno = CURSEG_I(sbi, CURSEG_HOT_DATA)->segno;
> > -	left_blocks = f2fs_usable_blks_in_seg(sbi, segno) -
> > +	left_blocks = BLKS_PER_SEG(sbi) -
> >   			get_seg_entry(sbi, segno)->ckpt_valid_blocks;
> >   	if (dent_blocks > left_blocks)
> >   		return false;
> > @@ -604,10 +595,10 @@ static inline void __get_secs_required(struct f2fs_sb_info *sbi,
> >   					get_pages(sbi, F2FS_DIRTY_DENTS) +
> >   					get_pages(sbi, F2FS_DIRTY_IMETA);
> >   	unsigned int total_dent_blocks = get_pages(sbi, F2FS_DIRTY_DENTS);
> > -	unsigned int node_secs = total_node_blocks / CAP_BLKS_PER_SEC(sbi);
> > -	unsigned int dent_secs = total_dent_blocks / CAP_BLKS_PER_SEC(sbi);
> > -	unsigned int node_blocks = total_node_blocks % CAP_BLKS_PER_SEC(sbi);
> > -	unsigned int dent_blocks = total_dent_blocks % CAP_BLKS_PER_SEC(sbi);
> > +	unsigned int node_secs = total_node_blocks / BLKS_PER_SEC(sbi);
> > +	unsigned int dent_secs = total_dent_blocks / BLKS_PER_SEC(sbi);
> > +	unsigned int node_blocks = total_node_blocks % BLKS_PER_SEC(sbi);
> > +	unsigned int dent_blocks = total_dent_blocks % BLKS_PER_SEC(sbi);
> >   	if (lower_p)
> >   		*lower_p = node_secs + dent_secs;
> > @@ -766,22 +757,21 @@ static inline int check_block_count(struct f2fs_sb_info *sbi,
> >   	bool is_valid  = test_bit_le(0, raw_sit->valid_map) ? true : false;
> >   	int valid_blocks = 0;
> >   	int cur_pos = 0, next_pos;
> > -	unsigned int usable_blks_per_seg = f2fs_usable_blks_in_seg(sbi, segno);
> >   	/* check bitmap with valid block count */
> >   	do {
> >   		if (is_valid) {
> >   			next_pos = find_next_zero_bit_le(&raw_sit->valid_map,
> > -					usable_blks_per_seg,
> > +					BLKS_PER_SEG(sbi),
> >   					cur_pos);
> >   			valid_blocks += next_pos - cur_pos;
> >   		} else
> >   			next_pos = find_next_bit_le(&raw_sit->valid_map,
> > -					usable_blks_per_seg,
> > +					BLKS_PER_SEG(sbi),
> >   					cur_pos);
> >   		cur_pos = next_pos;
> >   		is_valid = !is_valid;
> > -	} while (cur_pos < usable_blks_per_seg);
> > +	} while (cur_pos < BLKS_PER_SEG(sbi));
> >   	if (unlikely(GET_SIT_VBLOCKS(raw_sit) != valid_blocks)) {
> >   		f2fs_err(sbi, "Mismatch valid blocks %d vs. %d",
> > @@ -791,14 +781,9 @@ static inline int check_block_count(struct f2fs_sb_info *sbi,
> >   		return -EFSCORRUPTED;
> >   	}
> > -	if (usable_blks_per_seg < BLKS_PER_SEG(sbi))
> > -		f2fs_bug_on(sbi, find_next_bit_le(&raw_sit->valid_map,
> > -				BLKS_PER_SEG(sbi),
> > -				usable_blks_per_seg) != BLKS_PER_SEG(sbi));
> > -
> >   	/* check segment usage, and check boundary of a given segment number */
> > -	if (unlikely(GET_SIT_VBLOCKS(raw_sit) > usable_blks_per_seg
> > -					|| !valid_main_segno(sbi, segno))) {
> > +	if (unlikely(GET_SIT_VBLOCKS(raw_sit) > BLKS_PER_SEG(sbi) ||
> > +				!valid_main_segno(sbi, segno))) {
> >   		f2fs_err(sbi, "Wrong valid blocks %d or segno %u",
> >   			 GET_SIT_VBLOCKS(raw_sit), segno);
> >   		set_sbi_flag(sbi, SBI_NEED_FSCK);
> > diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
> > index c0688c124aa7..cd6a56020a5d 100644
> > --- a/fs/f2fs/super.c
> > +++ b/fs/f2fs/super.c
> > @@ -3837,21 +3837,13 @@ static int f2fs_report_zone_cb(struct blk_zone *zone, unsigned int idx,
> >   			      void *data)
> >   {
> >   	struct f2fs_report_zones_args *rz_args = data;
> > -	block_t unusable_blocks = (zone->len - zone->capacity) >>
> > -					F2FS_LOG_SECTORS_PER_BLOCK;
> > -	if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL)
> > -		return 0;
> > -
> > -	set_bit(idx, rz_args->dev->blkz_seq);
> > -	if (!rz_args->sbi->unusable_blocks_per_sec) {
> > -		rz_args->sbi->unusable_blocks_per_sec = unusable_blocks;
> > -		return 0;
> > -	}
> > -	if (rz_args->sbi->unusable_blocks_per_sec != unusable_blocks) {
> > -		f2fs_err(rz_args->sbi, "F2FS supports single zone capacity\n");
> > +	if (zone->len != zone->capacity) {
> > +		f2fs_err(rz_args->sbi, "F2FS does not support zone capacity.\n");
> >   		return -EINVAL;
> >   	}
> > +	if (zone->type != BLK_ZONE_TYPE_CONVENTIONAL)
> > +		set_bit(idx, rz_args->dev->blkz_seq);
> >   	return 0;
> >   }
> > diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
> > index 906d2af2d849..2689cc9c3bf8 100644
> > --- a/fs/f2fs/sysfs.c
> > +++ b/fs/f2fs/sysfs.c
> > @@ -1018,9 +1018,6 @@ F2FS_SBI_GENERAL_RW_ATTR(revoked_atomic_block);
> >   F2FS_SBI_GENERAL_RW_ATTR(hot_data_age_threshold);
> >   F2FS_SBI_GENERAL_RW_ATTR(warm_data_age_threshold);
> >   F2FS_SBI_GENERAL_RW_ATTR(last_age_weight);
> > -#ifdef CONFIG_BLK_DEV_ZONED
> > -F2FS_SBI_GENERAL_RO_ATTR(unusable_blocks_per_sec);
> > -#endif
> >   /* STAT_INFO ATTR */
> >   #ifdef CONFIG_F2FS_STAT_FS
> > @@ -1172,9 +1169,6 @@ static struct attribute *f2fs_attrs[] = {
> >   	ATTR_LIST(moved_blocks_background),
> >   	ATTR_LIST(avg_vblocks),
> >   #endif
> > -#ifdef CONFIG_BLK_DEV_ZONED
> > -	ATTR_LIST(unusable_blocks_per_sec),
> > -#endif
> >   #ifdef CONFIG_F2FS_FS_COMPRESSION
> >   	ATTR_LIST(compr_written_block),
> >   	ATTR_LIST(compr_saved_block),