f2fs: push some variables to debug part

Some, counters are needed only for the statistical information
while debugging.
So, those can be controlled using CONFIG_F2FS_STAT_FS,
pushing the usage for few variables under this flag.

Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 3d11449..01ddc91 100644 (file)
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -478,7 +478,9 @@ retry:
                }
        }
        list_add_tail(&new->list, head);
+#ifdef CONFIG_F2FS_STAT_FS
        sbi->n_dirty_dirs++;
+#endif
 
        BUG_ON(!S_ISDIR(inode->i_mode));
 out:
@@ -508,7 +510,9 @@ void remove_dirty_dir_inode(struct inode *inode)
                if (entry->inode == inode) {
                        list_del(&entry->list);
                        kmem_cache_free(inode_entry_slab, entry);
+#ifdef CONFIG_F2FS_STAT_FS
                        sbi->n_dirty_dirs--;
+#endif
                        break;
                }
        }

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 1644fff..93917e3 100644 (file)
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -68,7 +68,9 @@ static int check_extent_cache(struct inode *inode, pgoff_t pgofs,
                                        struct buffer_head *bh_result)
 {
        struct f2fs_inode_info *fi = F2FS_I(inode);
+#ifdef CONFIG_F2FS_STAT_FS
        struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
+#endif
        pgoff_t start_fofs, end_fofs;
        block_t start_blkaddr;
 
@@ -78,7 +80,9 @@ static int check_extent_cache(struct inode *inode, pgoff_t pgofs,
                return 0;
        }
 
+#ifdef CONFIG_F2FS_STAT_FS
        sbi->total_hit_ext++;
+#endif
        start_fofs = fi->ext.fofs;
        end_fofs = fi->ext.fofs + fi->ext.len - 1;
        start_blkaddr = fi->ext.blk_addr;
@@ -96,7 +100,9 @@ static int check_extent_cache(struct inode *inode, pgoff_t pgofs,
                else
                        bh_result->b_size = UINT_MAX;
 
+#ifdef CONFIG_F2FS_STAT_FS
                sbi->read_hit_ext++;
+#endif
                read_unlock(&fi->ext.ext_lock);
                return 1;
        }

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 92fd4e9..40b137a 100644 (file)
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -372,7 +372,6 @@ struct f2fs_sb_info {
        /* for directory inode management */
        struct list_head dir_inode_list;        /* dir inode list */
        spinlock_t dir_inode_lock;              /* for dir inode list lock */
-       unsigned int n_dirty_dirs;              /* # of dir inodes */
 
        /* basic file system units */
        unsigned int log_sectors_per_block;     /* log2 sectors per block */
@@ -409,12 +408,15 @@ struct f2fs_sb_info {
         * for stat information.
         * one is for the LFS mode, and the other is for the SSR mode.
         */
+#ifdef CONFIG_F2FS_STAT_FS
        struct f2fs_stat_info *stat_info;       /* FS status information */
        unsigned int segment_count[2];          /* # of allocated segments */
        unsigned int block_count[2];            /* # of allocated blocks */
-       unsigned int last_victim[2];            /* last victim segment # */
        int total_hit_ext, read_hit_ext;        /* extent cache hit ratio */
        int bg_gc;                              /* background gc calls */
+       unsigned int n_dirty_dirs;              /* # of dir inodes */
+#endif
+       unsigned int last_victim[2];            /* last victim segment # */
        spinlock_t stat_lock;                   /* lock for stat operations */
 };
 

diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index 1496159..25b083c 100644 (file)
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -76,7 +76,9 @@ static int gc_thread_func(void *data)
                else
                        wait_ms = increase_sleep_time(wait_ms);
 
+#ifdef CONFIG_F2FS_STAT_FS
                sbi->bg_gc++;
+#endif
 
                /* if return value is not zero, no victim was selected */
                if (f2fs_gc(sbi))

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 3a0d027..be668ff 100644 (file)
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -610,7 +610,10 @@ static void allocate_segment_by_default(struct f2fs_sb_info *sbi,
        else
                new_curseg(sbi, type, false);
 out:
+#ifdef CONFIG_F2FS_STAT_FS
        sbi->segment_count[curseg->alloc_type]++;
+#endif
+       return;
 }
 
 void allocate_new_segments(struct f2fs_sb_info *sbi)
@@ -846,7 +849,9 @@ static void do_write_page(struct f2fs_sb_info *sbi, struct page *page,
 
        mutex_lock(&sit_i->sentry_lock);
        __refresh_next_blkoff(sbi, curseg);
+#ifdef CONFIG_F2FS_STAT_FS
        sbi->block_count[curseg->alloc_type]++;
+#endif
 
        /*
         * SIT information should be updated before segment allocation,