Adds to count discard command entry and show the number in debugfs, also fix to add cost of discard command cache into total comsumed memory footprint.
Signed-off-by: Chao Yu <[email protected]> --- fs/f2fs/debug.c | 12 +++++++++--- fs/f2fs/f2fs.h | 2 ++ fs/f2fs/segment.c | 4 ++++ 3 files changed, 15 insertions(+), 3 deletions(-) diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c index f27e66ea7ff3..906f627e44fc 100644 --- a/fs/f2fs/debug.c +++ b/fs/f2fs/debug.c @@ -67,6 +67,8 @@ static void update_general_status(struct f2fs_sb_info *sbi) atomic_read(&SM_I(sbi)->dcc_info->issued_discard); si->nr_discarding = atomic_read(&SM_I(sbi)->dcc_info->issing_discard); + si->nr_discard_cmd = + atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt); } si->total_count = (int)sbi->user_block_count / sbi->blocks_per_seg; si->rsvd_segs = reserved_segments(sbi); @@ -220,8 +222,11 @@ static void update_mem_info(struct f2fs_sb_info *sbi) /* build merge flush thread */ if (SM_I(sbi)->fcc_info) si->cache_mem += sizeof(struct flush_cmd_control); - if (SM_I(sbi)->dcc_info) + if (SM_I(sbi)->dcc_info) { si->cache_mem += sizeof(struct discard_cmd_control); + si->cache_mem += sizeof(struct discard_cmd) * + atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt); + } /* free nids */ si->cache_mem += (NM_I(sbi)->nid_cnt[FREE_NID_LIST] + @@ -343,10 +348,11 @@ static int stat_show(struct seq_file *s, void *v) si->ext_tree, si->zombie_tree, si->ext_node); seq_puts(s, "\nBalancing F2FS Async:\n"); seq_printf(s, " - IO (CP: %4d, Data: %4d, Flush: (%4d %4d), " - "Discard: (%4d %4d))\n", + "Discard: (%4d %4d)) cmd: %4d\n", si->nr_wb_cp_data, si->nr_wb_data, si->nr_flushing, si->nr_flushed, - si->nr_discarding, si->nr_discarded); + si->nr_discarding, si->nr_discarded, + si->nr_discard_cmd); seq_printf(s, " - inmem: %4d, atomic IO: %4d (Max. %4d), " "volatile IO: %4d (Max. %4d)\n", si->inmem_pages, si->aw_cnt, si->max_aw_cnt, diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 8145fa5ca53e..aa6fdeada83c 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -217,6 +217,7 @@ struct discard_cmd_control { int max_discards; /* max. discards to be issued */ atomic_t issued_discard; /* # of issued discard */ atomic_t issing_discard; /* # of issing discard */ + atomic_t discard_cmd_cnt; /* # of cached cmd count */ }; /* for the list of fsync inodes, used only during recovery */ @@ -2336,6 +2337,7 @@ struct f2fs_stat_info { int total_count, utilization; int bg_gc, nr_wb_cp_data, nr_wb_data; int nr_flushing, nr_flushed, nr_discarding, nr_discarded; + int nr_discard_cmd; int inline_xattr, inline_inode, inline_dir, append, update, orphans; int aw_cnt, max_aw_cnt, vw_cnt, max_vw_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 bf7e29d45513..52aa36d7b2a6 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -693,6 +693,8 @@ static void __add_discard_cmd(struct f2fs_sb_info *sbi, mutex_lock(&dcc->cmd_lock); list_add_tail(&dc->list, pend_list); mutex_unlock(&dcc->cmd_lock); + + atomic_inc(&dcc->discard_cmd_cnt); } static void __remove_discard_cmd(struct f2fs_sb_info *sbi, struct discard_cmd *dc) @@ -708,6 +710,7 @@ static void __remove_discard_cmd(struct f2fs_sb_info *sbi, struct discard_cmd *d "Issue discard failed, ret: %d", dc->error); list_del(&dc->list); kmem_cache_free(discard_cmd_slab, dc); + atomic_dec(&SM_I(sbi)->dcc_info->discard_cmd_cnt); } static void f2fs_submit_discard_endio(struct bio *bio) @@ -1159,6 +1162,7 @@ static int create_discard_cmd_control(struct f2fs_sb_info *sbi) mutex_init(&dcc->cmd_lock); atomic_set(&dcc->issued_discard, 0); atomic_set(&dcc->issing_discard, 0); + atomic_set(&dcc->discard_cmd_cnt, 0); dcc->nr_discards = 0; dcc->max_discards = 0; -- 2.8.2.295.g3f1c1d0
