From 648d50ba12c805d3fc75105ede7af254b3349dbd Mon Sep 17 00:00:00 2001 From: Chao Yu Date: Wed, 22 Mar 2017 17:23:45 +0800 Subject: [PATCH] f2fs: show the max number of volatile operations This patch adds to show the max number of volatile operations which are conducting concurrently. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/debug.c | 10 ++++++++-- fs/f2fs/f2fs.h | 18 +++++++++++++++++- fs/f2fs/file.c | 5 +++++ 3 files changed, 30 insertions(+), 3 deletions(-) diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c index ef1179df05d9..0baa3ee39392 100644 --- a/fs/f2fs/debug.c +++ b/fs/f2fs/debug.c @@ -51,7 +51,9 @@ static void update_general_status(struct f2fs_sb_info *sbi) si->ndirty_all = sbi->ndirty_inode[DIRTY_META]; si->inmem_pages = get_pages(sbi, F2FS_INMEM_PAGES); si->aw_cnt = atomic_read(&sbi->aw_cnt); + si->vw_cnt = atomic_read(&sbi->vw_cnt); si->max_aw_cnt = atomic_read(&sbi->max_aw_cnt); + si->max_vw_cnt = atomic_read(&sbi->max_vw_cnt); si->nr_wb_cp_data = get_pages(sbi, F2FS_WB_CP_DATA); si->nr_wb_data = get_pages(sbi, F2FS_WB_DATA); if (SM_I(sbi) && SM_I(sbi)->fcc_info) @@ -337,8 +339,10 @@ static int stat_show(struct seq_file *s, void *v) 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, " - inmem: %4d, atomic IO: %4d (Max. %4d), " + "volatile IO: %4d (Max. %4d)\n", + si->inmem_pages, si->aw_cnt, si->max_aw_cnt, + si->vw_cnt, si->max_vw_cnt); seq_printf(s, " - nodes: %4d in %4d\n", si->ndirty_node, si->node_pages); seq_printf(s, " - dents: %4d in dirs:%4d (%4d)\n", @@ -438,7 +442,9 @@ int f2fs_build_stats(struct f2fs_sb_info *sbi) atomic_set(&sbi->inplace_count, 0); atomic_set(&sbi->aw_cnt, 0); + atomic_set(&sbi->vw_cnt, 0); atomic_set(&sbi->max_aw_cnt, 0); + atomic_set(&sbi->max_vw_cnt, 0); mutex_lock(&f2fs_stat_mutex); list_add_tail(&si->stat_list, &f2fs_stat_list); diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index a481c8e39b7c..340d62c29a98 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -915,7 +915,9 @@ struct f2fs_sb_info { atomic_t inline_inode; /* # of inline_data inodes */ atomic_t inline_dir; /* # of inline_dentry inodes */ atomic_t aw_cnt; /* # of atomic writes */ + atomic_t vw_cnt; /* # of volatile writes */ atomic_t max_aw_cnt; /* max # of atomic writes */ + atomic_t max_vw_cnt; /* max # of volatile writes */ int bg_gc; /* background gc calls */ unsigned int ndirty_inode[NR_INODE_TYPE]; /* # of dirty inodes */ #endif @@ -2328,7 +2330,7 @@ struct f2fs_stat_info { int total_count, utilization; int bg_gc, nr_wb_cp_data, nr_wb_data, nr_flush, nr_discard; int inline_xattr, inline_inode, inline_dir, append, update, orphans; - int aw_cnt, max_aw_cnt; + int aw_cnt, max_aw_cnt, vw_cnt, max_vw_cnt; unsigned int valid_count, valid_node_count, valid_inode_count, discard_blks; unsigned int bimodal, avg_vblocks; int util_free, util_valid, util_invalid; @@ -2411,6 +2413,17 @@ static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi) if (cur > max) \ atomic_set(&F2FS_I_SB(inode)->max_aw_cnt, cur); \ } while (0) +#define stat_inc_volatile_write(inode) \ + (atomic_inc(&F2FS_I_SB(inode)->vw_cnt)) +#define stat_dec_volatile_write(inode) \ + (atomic_dec(&F2FS_I_SB(inode)->vw_cnt)) +#define stat_update_max_volatile_write(inode) \ + do { \ + int cur = atomic_read(&F2FS_I_SB(inode)->vw_cnt); \ + int max = atomic_read(&F2FS_I_SB(inode)->max_vw_cnt); \ + if (cur > max) \ + atomic_set(&F2FS_I_SB(inode)->max_vw_cnt, cur); \ + } while (0) #define stat_inc_seg_count(sbi, type, gc_type) \ do { \ struct f2fs_stat_info *si = F2FS_STAT(sbi); \ @@ -2467,6 +2480,9 @@ void f2fs_destroy_root_stats(void); #define stat_inc_atomic_write(inode) #define stat_dec_atomic_write(inode) #define stat_update_max_atomic_write(inode) +#define stat_inc_volatile_write(inode) +#define stat_dec_volatile_write(inode) +#define stat_update_max_volatile_write(inode) #define stat_inc_seg_type(sbi, curseg) #define stat_inc_block_count(sbi, curseg) #define stat_inc_inplace_blocks(sbi) diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 7704bd99b990..f3be240ef129 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -1426,6 +1426,7 @@ static int f2fs_release_file(struct inode *inode, struct file *filp) drop_inmem_pages(inode); if (f2fs_is_volatile_file(inode)) { clear_inode_flag(inode, FI_VOLATILE_FILE); + stat_dec_volatile_write(inode); set_inode_flag(inode, FI_DROP_CACHE); filemap_fdatawrite(inode->i_mapping); clear_inode_flag(inode, FI_DROP_CACHE); @@ -1613,6 +1614,9 @@ static int f2fs_ioc_start_volatile_write(struct file *filp) if (ret) goto out; + stat_inc_volatile_write(inode); + stat_update_max_volatile_write(inode); + set_inode_flag(inode, FI_VOLATILE_FILE); f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); out: @@ -1668,6 +1672,7 @@ static int f2fs_ioc_abort_volatile_write(struct file *filp) drop_inmem_pages(inode); if (f2fs_is_volatile_file(inode)) { clear_inode_flag(inode, FI_VOLATILE_FILE); + stat_dec_volatile_write(inode); ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); } -- 2.20.1