Messages in this thread | | | Subject | Re: [f2fs-dev] [PATCH 6/6] f2fs: show # of on-going flush and discard bios | From | heyunlei <> | Date | Sat, 14 Jan 2017 10:26:21 +0800 |
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Hi Jaegeuk Kim,
On 2017/1/13 6:44, Jaegeuk Kim wrote: > This patch adds stat information for flush and discard commands. > > Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> > --- > fs/f2fs/debug.c | 7 +++++-- > fs/f2fs/f2fs.h | 3 ++- > fs/f2fs/segment.c | 4 ++++ > 3 files changed, 11 insertions(+), 3 deletions(-) > > diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c > index f9f6b0aeba02..e67cab2fafac 100644 > --- a/fs/f2fs/debug.c > +++ b/fs/f2fs/debug.c > @@ -54,6 +54,8 @@ static void update_general_status(struct f2fs_sb_info *sbi) > si->max_aw_cnt = atomic_read(&sbi->max_aw_cnt); > si->nr_wb_cp_data = get_pages(sbi, F2FS_WB_CP_DATA); > si->nr_wb_data = get_pages(sbi, F2FS_WB_DATA); > + si->nr_flush = atomic_read(&SM_I(sbi)->fcc_info->submit_flush); > + si->nr_discard = atomic_read(&SM_I(sbi)->dcc_info->submit_discard); > si->total_count = (int)sbi->user_block_count / sbi->blocks_per_seg; > si->rsvd_segs = reserved_segments(sbi); > si->overp_segs = overprovision_segments(sbi); > @@ -318,8 +320,9 @@ static int stat_show(struct seq_file *s, void *v) > seq_printf(s, " - Inner Struct Count: tree: %d(%d), node: %d\n", > si->ext_tree, si->zombie_tree, si->ext_node); > seq_puts(s, "\nBalancing F2FS Async:\n"); > - seq_printf(s, " - IO (CP: %4d, Data: %4d)\n", > - si->nr_wb_cp_data, si->nr_wb_data); > + seq_printf(s, " - IO (CP: %4d, Data: %4d, Flush: %4d, Discard: %4d)\n", > + si->nr_wb_cp_data, si->nr_wb_data, > + si->nr_flush, si->nr_discard); > seq_printf(s, " - inmem: %4d, atomic IO: %4d (Max. %4d)\n", > si->inmem_pages, si->aw_cnt, si->max_aw_cnt); > seq_printf(s, " - nodes: %4d in %4d\n", > diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h > index ef5e3709c161..d51bc18e7292 100644 > --- a/fs/f2fs/f2fs.h > +++ b/fs/f2fs/f2fs.h > @@ -201,6 +201,7 @@ struct discard_cmd_control { > wait_queue_head_t discard_wait_queue; /* waiting queue for wake-up */ > struct mutex cmd_lock; > int max_discards; /* max. discards to be issued */ > + atomic_t submit_discard; /* # of issued discard */ > };
Here, we need to initialize submit_discard.
Thanks. > > /* for the list of fsync inodes, used only during recovery */ > @@ -2254,7 +2255,7 @@ struct f2fs_stat_info { > unsigned int ndirty_dirs, ndirty_files, ndirty_all; > int nats, dirty_nats, sits, dirty_sits, free_nids, alloc_nids; > int total_count, utilization; > - int bg_gc, nr_wb_cp_data, nr_wb_data; > + int bg_gc, nr_wb_cp_data, nr_wb_data, nr_flush, nr_discard; > int inline_xattr, inline_inode, inline_dir, orphans; > int aw_cnt, max_aw_cnt; > unsigned int valid_count, valid_node_count, valid_inode_count, discard_blks; > diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c > index 74364006bfa6..5a2d380182d9 100644 > --- a/fs/f2fs/segment.c > +++ b/fs/f2fs/segment.c > @@ -653,6 +653,8 @@ static void __remove_discard_cmd(struct f2fs_sb_info *sbi, struct discard_cmd *d > { > int err = dc->bio->bi_error; > > + atomic_dec(&(SM_I(sbi)->dcc_info->submit_discard)); > + > if (err == -EOPNOTSUPP) > err = 0; > > @@ -678,6 +680,7 @@ void f2fs_wait_discard_bio(struct f2fs_sb_info *sbi, block_t blkaddr) > if (dc->state == D_PREP) { > dc->state = D_SUBMIT; > submit_bio(dc->bio); > + atomic_inc(&dcc->submit_discard); > } > wait_for_completion_io(&dc->wait); > > @@ -723,6 +726,7 @@ static int issue_discard_thread(void *data) > if (dc->state == D_PREP) { > dc->state = D_SUBMIT; > submit_bio(dc->bio); > + atomic_inc(&dcc->submit_discard); > if (iter++ > DISCARD_ISSUE_RATE) > break; > } else if (dc->state == D_DONE) { >
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