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Commit 26a28a0c authored by Jaegeuk Kim's avatar Jaegeuk Kim
Browse files

f2fs: show the max number of atomic operations 



This patch adds to show the max number of atomic operations which are
conducting concurrently.

Reviewed-by: default avatarChao Yu <yuchao0@huawei.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent ec91538d

fs/f2fs/debug.c

+7 −0
Original line number Diff line number Diff line
@@ -50,6 +50,8 @@ static void update_general_status(struct f2fs_sb_info *sbi) 
	si->ndirty_files = sbi->ndirty_inode[FILE_INODE];

	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->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->total_count = (int)sbi->user_block_count / sbi->blocks_per_seg;
@@ -256,6 +258,8 @@ static int stat_show(struct seq_file *s, void *v) 
			   si->inline_dir);

		seq_printf(s, "  - Orphan Inode: %u\n",

			   si->orphans);

		seq_printf(s, "  - Atomic write count: %4d (Max. %4d)\n",

			   si->aw_cnt, si->max_aw_cnt);

		seq_printf(s, "\nMain area: %d segs, %d secs %d zones\n",

			   si->main_area_segs, si->main_area_sections,

			   si->main_area_zones);
@@ -414,6 +418,9 @@ int f2fs_build_stats(struct f2fs_sb_info *sbi) 
	atomic_set(&sbi->inline_dir, 0);

	atomic_set(&sbi->inplace_count, 0);



	atomic_set(&sbi->aw_cnt, 0);

	atomic_set(&sbi->max_aw_cnt, 0);



	mutex_lock(&f2fs_stat_mutex);

	list_add_tail(&si->stat_list, &f2fs_stat_list);

	mutex_unlock(&f2fs_stat_mutex);

fs/f2fs/f2fs.h

+17 −0
Original line number Diff line number Diff line
@@ -884,6 +884,8 @@ struct f2fs_sb_info { 
	atomic_t inline_xattr;			/* # of inline_xattr inodes */

	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 max_aw_cnt;			/* max # of atomic writes */

	int bg_gc;				/* background gc calls */

	unsigned int ndirty_inode[NR_INODE_TYPE];	/* # of dirty inodes */

#endif
@@ -2236,6 +2238,7 @@ struct f2fs_stat_info { 
	int total_count, utilization;

	int bg_gc, nr_wb_cp_data, nr_wb_data;

	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;

	unsigned int bimodal, avg_vblocks;

	int util_free, util_valid, util_invalid;
@@ -2307,6 +2310,17 @@ static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi) 
		((sbi)->block_count[(curseg)->alloc_type]++)

#define stat_inc_inplace_blocks(sbi)					\

		(atomic_inc(&(sbi)->inplace_count))

#define stat_inc_atomic_write(inode)					\

		(atomic_inc(&F2FS_I_SB(inode)->aw_cnt));

#define stat_dec_atomic_write(inode)					\

		(atomic_dec(&F2FS_I_SB(inode)->aw_cnt));

#define stat_update_max_atomic_write(inode)				\

	do {								\

		int cur = atomic_read(&F2FS_I_SB(inode)->aw_cnt);	\

		int max = atomic_read(&F2FS_I_SB(inode)->max_aw_cnt);	\

		if (cur > max)						\

			atomic_set(&F2FS_I_SB(inode)->max_aw_cnt, cur);	\

	} while (0)

#define stat_inc_seg_count(sbi, type, gc_type)				\

	do {								\

		struct f2fs_stat_info *si = F2FS_STAT(sbi);		\
@@ -2360,6 +2374,9 @@ void f2fs_destroy_root_stats(void); 
#define stat_dec_inline_inode(inode)

#define stat_inc_inline_dir(inode)

#define stat_dec_inline_dir(inode)

#define stat_inc_atomic_write(inode)

#define stat_dec_atomic_write(inode)

#define stat_update_max_atomic_write(inode)

#define stat_inc_seg_type(sbi, curseg)

#define stat_inc_block_count(sbi, curseg)

#define stat_inc_inplace_blocks(sbi)

fs/f2fs/file.c

+6 −2
Original line number Diff line number Diff line
@@ -1542,6 +1542,8 @@ static int f2fs_ioc_start_atomic_write(struct file *filp) 
	if (ret)

		clear_inode_flag(inode, FI_ATOMIC_FILE);

out:

	stat_inc_atomic_write(inode);

	stat_update_max_atomic_write(inode);

	inode_unlock(inode);

	mnt_drop_write_file(filp);

	return ret;
@@ -1571,9 +1573,11 @@ static int f2fs_ioc_commit_atomic_write(struct file *filp) 
			set_inode_flag(inode, FI_ATOMIC_FILE);

			goto err_out;

		}

	}



		ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);

		stat_dec_atomic_write(inode);

	} else {

		ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);

	}

err_out:

	inode_unlock(inode);

	mnt_drop_write_file(filp);

fs/f2fs/segment.c

+1 −0
Original line number Diff line number Diff line
@@ -243,6 +243,7 @@ void drop_inmem_pages(struct inode *inode) 
	struct f2fs_inode_info *fi = F2FS_I(inode);



	clear_inode_flag(inode, FI_ATOMIC_FILE);

	stat_dec_atomic_write(inode);



	mutex_lock(&fi->inmem_lock);

	__revoke_inmem_pages(inode, &fi->inmem_pages, true, false);