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 <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

1 files changed, 17 insertions, 1 deletions

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)