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Message-ID: <ZeE2A1DYl-efulfg@google.com>
Date: Thu, 29 Feb 2024 17:57:23 -0800
From: Jaegeuk Kim <jaegeuk@...nel.org>
To: Chao Yu <chao@...nel.org>
Cc: linux-f2fs-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] f2fs: introduce SEGS_TO_BLKS/BLKS_TO_SEGS for cleanup
On 03/01, Chao Yu wrote:
> On 2024/3/1 0:35, Jaegeuk Kim wrote:
> > On 02/29, Chao Yu wrote:
> > > On 2024/2/28 1:47, Jaegeuk Kim wrote:
> > > > On 02/21, Chao Yu wrote:
> > > > > Just cleanup, no functional change.
> > > > >
> > > > > Signed-off-by: Chao Yu <chao@...nel.org>
> > > > > ---
> > > > > fs/f2fs/debug.c | 7 +++----
> > > > > fs/f2fs/f2fs.h | 14 ++++++++------
> > > > > fs/f2fs/gc.c | 10 +++++-----
> > > > > fs/f2fs/gc.h | 4 ++--
> > > > > fs/f2fs/segment.c | 12 ++++++------
> > > > > fs/f2fs/segment.h | 8 ++++----
> > > > > fs/f2fs/super.c | 16 ++++++++--------
> > > > > fs/f2fs/sysfs.c | 4 ++--
> > > > > 8 files changed, 38 insertions(+), 37 deletions(-)
> > > > >
> > > > > diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c
> > > > > index 6617195bd27e..12893477f2e4 100644
> > > > > --- a/fs/f2fs/debug.c
> > > > > +++ b/fs/f2fs/debug.c
> > > > > @@ -134,7 +134,7 @@ static void update_general_status(struct f2fs_sb_info *sbi)
> > > > > si->cur_ckpt_time = sbi->cprc_info.cur_time;
> > > > > si->peak_ckpt_time = sbi->cprc_info.peak_time;
> > > > > spin_unlock(&sbi->cprc_info.stat_lock);
> > > > > - si->total_count = (int)sbi->user_block_count / BLKS_PER_SEG(sbi);
> > > > > + si->total_count = BLKS_TO_SEGS(sbi, (int)sbi->user_block_count);
> > > > > si->rsvd_segs = reserved_segments(sbi);
> > > > > si->overp_segs = overprovision_segments(sbi);
> > > > > si->valid_count = valid_user_blocks(sbi);
> > > > > @@ -175,11 +175,10 @@ static void update_general_status(struct f2fs_sb_info *sbi)
> > > > > si->alloc_nids = NM_I(sbi)->nid_cnt[PREALLOC_NID];
> > > > > si->io_skip_bggc = sbi->io_skip_bggc;
> > > > > si->other_skip_bggc = sbi->other_skip_bggc;
> > > > > - si->util_free = (int)(free_user_blocks(sbi) >> sbi->log_blocks_per_seg)
> > > > > + si->util_free = (int)(BLKS_TO_SEGS(sbi, free_user_blocks(sbi)))
> > > > > * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
> > > > > / 2;
> > > > > - si->util_valid = (int)(written_block_count(sbi) >>
> > > > > - sbi->log_blocks_per_seg)
> > > > > + si->util_valid = (int)(BLKS_TO_SEGS(sbi, written_block_count(sbi)))
> > > > > * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
> > > > > / 2;
> > > > > si->util_invalid = 50 - si->util_free - si->util_valid;
> > > > > diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
> > > > > index dad2774ca72f..8a6fd4352a0e 100644
> > > > > --- a/fs/f2fs/f2fs.h
> > > > > +++ b/fs/f2fs/f2fs.h
> > > > > @@ -1813,12 +1813,14 @@ struct f2fs_sb_info {
> > > > > };
> > > > > /* Definitions to access f2fs_sb_info */
> > > > > -#define BLKS_PER_SEG(sbi) \
> > > > > - ((sbi)->blocks_per_seg)
> > > > > -#define BLKS_PER_SEC(sbi) \
> > > > > - ((sbi)->segs_per_sec << (sbi)->log_blocks_per_seg)
> > > > > -#define SEGS_PER_SEC(sbi) \
> > > > > - ((sbi)->segs_per_sec)
> > > > > +#define SEGS_TO_BLKS(sbi, segs) \
> > > > > + ((segs) << (sbi)->log_blocks_per_seg)
> > > >
> > > >
> > > > I also applied this.
> > > >
> > > > /* Definitions to access f2fs_sb_info */
> > > > #define SEGS_TO_BLKS(sbi, segs) \
> > > > - ((segs) << (sbi)->log_blocks_per_seg)
> > > > + (((long long)segs) << (sbi)->log_blocks_per_seg)
> > >
> > > Jaegeuk,
> > >
> > > This may cause compile failure reported as below, can we revert this?
> > >
> > > https://lore.kernel.org/linux-f2fs-devel/CAMuHMdXRuiV8PEe6azKYLp+z_Sa8CbL8849bzu59J1_XXtyk1g@mail.gmail.com/T/#t
> >
> > Yeah, it seems so. I removed it in -dev.
>
> Oh, I meant reverting (((long long)segs) << (sbi)->log_blocks_per_seg),
> this line can bring 64bits data into division statement, result in
> compile failure.
Time to resend the patch to address previous casting issue as well? :)
>
> Thanks,
>
> >
> > >
> > > Thanks,
> > >
> > > > #define BLKS_TO_SEGS(sbi, blks) \
> > > > ((blks) >> (sbi)->log_blocks_per_seg)
> > > >
> > > > > +#define BLKS_TO_SEGS(sbi, blks) \
> > > > > + ((blks) >> (sbi)->log_blocks_per_seg)
> > > > > +
> > > > > +#define BLKS_PER_SEG(sbi) ((sbi)->blocks_per_seg)
> > > > > +#define BLKS_PER_SEC(sbi) (SEGS_TO_BLKS(sbi, (sbi)->segs_per_sec))
> > > > > +#define SEGS_PER_SEC(sbi) ((sbi)->segs_per_sec)
> > > > > __printf(3, 4)
> > > > > void f2fs_printk(struct f2fs_sb_info *sbi, bool limit_rate, const char *fmt, ...);
> > > > > diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
> > > > > index 3ff126316d42..6d160d50e14e 100644
> > > > > --- a/fs/f2fs/gc.c
> > > > > +++ b/fs/f2fs/gc.c
> > > > > @@ -301,7 +301,7 @@ static unsigned int get_max_cost(struct f2fs_sb_info *sbi,
> > > > > /* LFS */
> > > > > if (p->gc_mode == GC_GREEDY)
> > > > > - return 2 * BLKS_PER_SEG(sbi) * p->ofs_unit;
> > > > > + return SEGS_TO_BLKS(sbi, 2 * p->ofs_unit);
> > > > > else if (p->gc_mode == GC_CB)
> > > > > return UINT_MAX;
> > > > > else if (p->gc_mode == GC_AT)
> > > > > @@ -347,7 +347,7 @@ static unsigned int get_cb_cost(struct f2fs_sb_info *sbi, unsigned int segno)
> > > > > mtime = div_u64(mtime, SEGS_PER_SEC(sbi));
> > > > > vblocks = div_u64(vblocks, SEGS_PER_SEC(sbi));
> > > > > - u = (vblocks * 100) >> sbi->log_blocks_per_seg;
> > > > > + u = BLKS_TO_SEGS(sbi, vblocks * 100);
> > > > > /* Handle if the system time has changed by the user */
> > > > > if (mtime < sit_i->min_mtime)
> > > > > @@ -2060,7 +2060,7 @@ static void update_sb_metadata(struct f2fs_sb_info *sbi, int secs)
> > > > > raw_sb->segment_count = cpu_to_le32(segment_count + segs);
> > > > > raw_sb->segment_count_main = cpu_to_le32(segment_count_main + segs);
> > > > > raw_sb->block_count = cpu_to_le64(block_count +
> > > > > - (long long)(segs << sbi->log_blocks_per_seg));
> > > > > + (long long)SEGS_TO_BLKS(sbi, segs));
> > > > > if (f2fs_is_multi_device(sbi)) {
> > > > > int last_dev = sbi->s_ndevs - 1;
> > > > > int dev_segs =
> > > > > @@ -2076,7 +2076,7 @@ static void update_sb_metadata(struct f2fs_sb_info *sbi, int secs)
> > > > > static void update_fs_metadata(struct f2fs_sb_info *sbi, int secs)
> > > > > {
> > > > > int segs = secs * SEGS_PER_SEC(sbi);
> > > > > - long long blks = (long long)(segs << sbi->log_blocks_per_seg);
> > > > > + long long blks = (long long)SEGS_TO_BLKS(sbi, segs);
> > > > > long long user_block_count =
> > > > > le64_to_cpu(F2FS_CKPT(sbi)->user_block_count);
> > > > > @@ -2118,7 +2118,7 @@ int f2fs_resize_fs(struct file *filp, __u64 block_count)
> > > > > int last_dev = sbi->s_ndevs - 1;
> > > > > __u64 last_segs = FDEV(last_dev).total_segments;
> > > > > - if (block_count + (last_segs << sbi->log_blocks_per_seg) <=
> > > > > + if (block_count + SEGS_TO_BLKS(sbi, last_segs) <=
> > > > > old_block_count)
> > > > > return -EINVAL;
> > > > > }
> > > > > diff --git a/fs/f2fs/gc.h b/fs/f2fs/gc.h
> > > > > index e4a75aa4160f..6a2419ddc7c6 100644
> > > > > --- a/fs/f2fs/gc.h
> > > > > +++ b/fs/f2fs/gc.h
> > > > > @@ -70,7 +70,7 @@ struct victim_entry {
> > > > > static inline block_t free_segs_blk_count(struct f2fs_sb_info *sbi)
> > > > > {
> > > > > - return free_segments(sbi) << sbi->log_blocks_per_seg;
> > > > > + return SEGS_TO_BLKS(sbi, free_segments(sbi));
> > > > > }
> > > > > static inline block_t free_user_blocks(struct f2fs_sb_info *sbi)
> > > > > @@ -78,7 +78,7 @@ static inline block_t free_user_blocks(struct f2fs_sb_info *sbi)
> > > > > block_t free_blks, ovp_blks;
> > > > > free_blks = free_segs_blk_count(sbi);
> > > > > - ovp_blks = overprovision_segments(sbi) << sbi->log_blocks_per_seg;
> > > > > + ovp_blks = SEGS_TO_BLKS(sbi, overprovision_segments(sbi));
> > > > > if (free_blks < ovp_blks)
> > > > > return 0;
> > > > > diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
> > > > > index 56927b097e30..d0209ea77dd2 100644
> > > > > --- a/fs/f2fs/segment.c
> > > > > +++ b/fs/f2fs/segment.c
> > > > > @@ -448,8 +448,8 @@ static inline bool excess_dirty_threshold(struct f2fs_sb_info *sbi)
> > > > > unsigned int nodes = get_pages(sbi, F2FS_DIRTY_NODES);
> > > > > unsigned int meta = get_pages(sbi, F2FS_DIRTY_META);
> > > > > unsigned int imeta = get_pages(sbi, F2FS_DIRTY_IMETA);
> > > > > - unsigned int threshold = (factor * DEFAULT_DIRTY_THRESHOLD) <<
> > > > > - sbi->log_blocks_per_seg;
> > > > > + unsigned int threshold =
> > > > > + SEGS_TO_BLKS(sbi, (factor * DEFAULT_DIRTY_THRESHOLD));
> > > > > unsigned int global_threshold = threshold * 3 / 2;
> > > > > if (dents >= threshold || qdata >= threshold ||
> > > > > @@ -870,7 +870,7 @@ block_t f2fs_get_unusable_blocks(struct f2fs_sb_info *sbi)
> > > > > {
> > > > > int ovp_hole_segs =
> > > > > (overprovision_segments(sbi) - reserved_segments(sbi));
> > > > > - block_t ovp_holes = ovp_hole_segs << sbi->log_blocks_per_seg;
> > > > > + block_t ovp_holes = SEGS_TO_BLKS(sbi, ovp_hole_segs);
> > > > > struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
> > > > > block_t holes[2] = {0, 0}; /* DATA and NODE */
> > > > > block_t unusable;
> > > > > @@ -2178,7 +2178,7 @@ void f2fs_clear_prefree_segments(struct f2fs_sb_info *sbi,
> > > > > if (!f2fs_sb_has_blkzoned(sbi) &&
> > > > > (!f2fs_lfs_mode(sbi) || !__is_large_section(sbi))) {
> > > > > f2fs_issue_discard(sbi, START_BLOCK(sbi, start),
> > > > > - (end - start) << sbi->log_blocks_per_seg);
> > > > > + SEGS_TO_BLKS(sbi, end - start));
> > > > > continue;
> > > > > }
> > > > > next:
> > > > > @@ -2289,7 +2289,7 @@ static int create_discard_cmd_control(struct f2fs_sb_info *sbi)
> > > > > atomic_set(&dcc->queued_discard, 0);
> > > > > atomic_set(&dcc->discard_cmd_cnt, 0);
> > > > > dcc->nr_discards = 0;
> > > > > - dcc->max_discards = MAIN_SEGS(sbi) << sbi->log_blocks_per_seg;
> > > > > + dcc->max_discards = SEGS_TO_BLKS(sbi, MAIN_SEGS(sbi));
> > > > > dcc->max_discard_request = DEF_MAX_DISCARD_REQUEST;
> > > > > dcc->min_discard_issue_time = DEF_MIN_DISCARD_ISSUE_TIME;
> > > > > dcc->mid_discard_issue_time = DEF_MID_DISCARD_ISSUE_TIME;
> > > > > @@ -4469,7 +4469,7 @@ static int build_sit_info(struct f2fs_sb_info *sbi)
> > > > > #endif
> > > > > sit_i->sit_base_addr = le32_to_cpu(raw_super->sit_blkaddr);
> > > > > - sit_i->sit_blocks = sit_segs << sbi->log_blocks_per_seg;
> > > > > + sit_i->sit_blocks = SEGS_TO_BLKS(sbi, sit_segs);
> > > > > sit_i->written_valid_blocks = 0;
> > > > > sit_i->bitmap_size = sit_bitmap_size;
> > > > > sit_i->dirty_sentries = 0;
> > > > > diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h
> > > > > index 9fe5ec619456..e72b02b67087 100644
> > > > > --- a/fs/f2fs/segment.h
> > > > > +++ b/fs/f2fs/segment.h
> > > > > @@ -77,21 +77,21 @@ static inline void sanity_check_seg_type(struct f2fs_sb_info *sbi,
> > > > > #define TOTAL_SEGS(sbi) \
> > > > > (SM_I(sbi) ? SM_I(sbi)->segment_count : \
> > > > > le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count))
> > > > > -#define TOTAL_BLKS(sbi) (TOTAL_SEGS(sbi) << (sbi)->log_blocks_per_seg)
> > > > > +#define TOTAL_BLKS(sbi) (SEGS_TO_BLKS(sbi, TOTAL_SEGS(sbi)))
> > > > > #define MAX_BLKADDR(sbi) (SEG0_BLKADDR(sbi) + TOTAL_BLKS(sbi))
> > > > > #define SEGMENT_SIZE(sbi) (1ULL << ((sbi)->log_blocksize + \
> > > > > (sbi)->log_blocks_per_seg))
> > > > > #define START_BLOCK(sbi, segno) (SEG0_BLKADDR(sbi) + \
> > > > > - (GET_R2L_SEGNO(FREE_I(sbi), segno) << (sbi)->log_blocks_per_seg))
> > > > > + (SEGS_TO_BLKS(sbi, GET_R2L_SEGNO(FREE_I(sbi), segno))))
> > > > > #define NEXT_FREE_BLKADDR(sbi, curseg) \
> > > > > (START_BLOCK(sbi, (curseg)->segno) + (curseg)->next_blkoff)
> > > > > #define GET_SEGOFF_FROM_SEG0(sbi, blk_addr) ((blk_addr) - SEG0_BLKADDR(sbi))
> > > > > #define GET_SEGNO_FROM_SEG0(sbi, blk_addr) \
> > > > > - (GET_SEGOFF_FROM_SEG0(sbi, blk_addr) >> (sbi)->log_blocks_per_seg)
> > > > > + (BLKS_TO_SEGS(sbi, GET_SEGOFF_FROM_SEG0(sbi, blk_addr)))
> > > > > #define GET_BLKOFF_FROM_SEG0(sbi, blk_addr) \
> > > > > (GET_SEGOFF_FROM_SEG0(sbi, blk_addr) & (BLKS_PER_SEG(sbi) - 1))
> > > > > @@ -891,7 +891,7 @@ static inline int nr_pages_to_skip(struct f2fs_sb_info *sbi, int type)
> > > > > if (type == DATA)
> > > > > return BLKS_PER_SEG(sbi);
> > > > > else if (type == NODE)
> > > > > - return 8 * BLKS_PER_SEG(sbi);
> > > > > + return SEGS_TO_BLKS(sbi, 8);
> > > > > else if (type == META)
> > > > > return 8 * BIO_MAX_VECS;
> > > > > else
> > > > > diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
> > > > > index 9976f2b0393c..bb056700b459 100644
> > > > > --- a/fs/f2fs/super.c
> > > > > +++ b/fs/f2fs/super.c
> > > > > @@ -3763,9 +3763,9 @@ static void init_sb_info(struct f2fs_sb_info *sbi)
> > > > > sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
> > > > > sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
> > > > > sbi->total_sections = le32_to_cpu(raw_super->section_count);
> > > > > - sbi->total_node_count =
> > > > > - ((le32_to_cpu(raw_super->segment_count_nat) / 2) *
> > > > > - NAT_ENTRY_PER_BLOCK) << sbi->log_blocks_per_seg;
> > > > > + sbi->total_node_count = SEGS_TO_BLKS(sbi,
> > > > > + ((le32_to_cpu(raw_super->segment_count_nat) / 2) *
> > > > > + NAT_ENTRY_PER_BLOCK));
> > > > > F2FS_ROOT_INO(sbi) = le32_to_cpu(raw_super->root_ino);
> > > > > F2FS_NODE_INO(sbi) = le32_to_cpu(raw_super->node_ino);
> > > > > F2FS_META_INO(sbi) = le32_to_cpu(raw_super->meta_ino);
> > > > > @@ -4199,14 +4199,14 @@ static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
> > > > > if (i == 0) {
> > > > > FDEV(i).start_blk = 0;
> > > > > FDEV(i).end_blk = FDEV(i).start_blk +
> > > > > - (FDEV(i).total_segments <<
> > > > > - sbi->log_blocks_per_seg) - 1 +
> > > > > - le32_to_cpu(raw_super->segment0_blkaddr);
> > > > > + SEGS_TO_BLKS(sbi,
> > > > > + FDEV(i).total_segments) - 1 +
> > > > > + le32_to_cpu(raw_super->segment0_blkaddr);
> > > > > } else {
> > > > > FDEV(i).start_blk = FDEV(i - 1).end_blk + 1;
> > > > > FDEV(i).end_blk = FDEV(i).start_blk +
> > > > > - (FDEV(i).total_segments <<
> > > > > - sbi->log_blocks_per_seg) - 1;
> > > > > + SEGS_TO_BLKS(sbi,
> > > > > + FDEV(i).total_segments) - 1;
> > > > > FDEV(i).bdev_handle = bdev_open_by_path(
> > > > > FDEV(i).path, mode, sbi->sb, NULL);
> > > > > }
> > > > > diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
> > > > > index 2689cc9c3bf8..ceac3bfc5e2c 100644
> > > > > --- a/fs/f2fs/sysfs.c
> > > > > +++ b/fs/f2fs/sysfs.c
> > > > > @@ -493,8 +493,8 @@ static ssize_t __sbi_store(struct f2fs_attr *a,
> > > > > spin_lock(&sbi->stat_lock);
> > > > > if (t > (unsigned long)(sbi->user_block_count -
> > > > > F2FS_OPTION(sbi).root_reserved_blocks -
> > > > > - (SM_I(sbi)->additional_reserved_segments <<
> > > > > - sbi->log_blocks_per_seg))) {
> > > > > + SEGS_TO_BLKS(sbi,
> > > > > + SM_I(sbi)->additional_reserved_segments))) {
> > > > > spin_unlock(&sbi->stat_lock);
> > > > > return -EINVAL;
> > > > > }
> > > > > --
> > > > > 2.40.1
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