f2fs: introduce the number of inode entries

This patch adds to monitor the number of ino entries.

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

diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index dd6a357..bcd686e 100644 (file)
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -318,6 +318,8 @@ retry:
                e->ino = ino;
 
                list_add_tail(&e->list, &sbi->ino_list[type]);
+               if (type != ORPHAN_INO)
+                       sbi->ino_num[type]++;
        }
        spin_unlock(&sbi->ino_lock[type]);
 }
@@ -331,8 +333,7 @@ static void __remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type)
        if (e) {
                list_del(&e->list);
                radix_tree_delete(&sbi->ino_root[type], ino);
-               if (type == ORPHAN_INO)
-                       sbi->n_orphans--;
+               sbi->ino_num[type]--;
                spin_unlock(&sbi->ino_lock[type]);
                kmem_cache_free(ino_entry_slab, e);
                return;
@@ -373,6 +374,7 @@ void release_dirty_inode(struct f2fs_sb_info *sbi)
                        list_del(&e->list);
                        radix_tree_delete(&sbi->ino_root[i], e->ino);
                        kmem_cache_free(ino_entry_slab, e);
+                       sbi->ino_num[i]--;
                }
                spin_unlock(&sbi->ino_lock[i]);
        }
@@ -383,10 +385,10 @@ int acquire_orphan_inode(struct f2fs_sb_info *sbi)
        int err = 0;
 
        spin_lock(&sbi->ino_lock[ORPHAN_INO]);
-       if (unlikely(sbi->n_orphans >= sbi->max_orphans))
+       if (unlikely(sbi->ino_num[ORPHAN_INO] >= sbi->max_orphans))
                err = -ENOSPC;
        else
-               sbi->n_orphans++;
+               sbi->ino_num[ORPHAN_INO]++;
        spin_unlock(&sbi->ino_lock[ORPHAN_INO]);
 
        return err;
@@ -395,8 +397,8 @@ int acquire_orphan_inode(struct f2fs_sb_info *sbi)
 void release_orphan_inode(struct f2fs_sb_info *sbi)
 {
        spin_lock(&sbi->ino_lock[ORPHAN_INO]);
-       f2fs_bug_on(sbi, sbi->n_orphans == 0);
-       sbi->n_orphans--;
+       f2fs_bug_on(sbi, sbi->ino_num[ORPHAN_INO] == 0);
+       sbi->ino_num[ORPHAN_INO]--;
        spin_unlock(&sbi->ino_lock[ORPHAN_INO]);
 }
 
@@ -460,11 +462,12 @@ static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk)
        struct f2fs_orphan_block *orphan_blk = NULL;
        unsigned int nentries = 0;
        unsigned short index;
-       unsigned short orphan_blocks =
-                       (unsigned short)GET_ORPHAN_BLOCKS(sbi->n_orphans);
+       unsigned short orphan_blocks;
        struct page *page = NULL;
        struct ino_entry *orphan = NULL;
 
+       orphan_blocks = GET_ORPHAN_BLOCKS(sbi->ino_num[ORPHAN_INO]);
+
        for (index = 0; index < orphan_blocks; index++)
                grab_meta_page(sbi, start_blk + index);
 
@@ -892,7 +895,7 @@ static void do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
        else
                clear_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG);
 
-       orphan_blocks = GET_ORPHAN_BLOCKS(sbi->n_orphans);
+       orphan_blocks = GET_ORPHAN_BLOCKS(sbi->ino_num[ORPHAN_INO]);
        ckpt->cp_pack_start_sum = cpu_to_le32(1 + cp_payload_blks +
                        orphan_blocks);
 
@@ -908,7 +911,7 @@ static void do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
                                orphan_blocks);
        }
 
-       if (sbi->n_orphans)
+       if (sbi->ino_num[ORPHAN_INO])
                set_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG);
        else
                clear_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG);
@@ -943,7 +946,7 @@ static void do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
                f2fs_put_page(cp_page, 1);
        }
 
-       if (sbi->n_orphans) {
+       if (sbi->ino_num[ORPHAN_INO]) {
                write_orphan_inodes(sbi, start_blk);
                start_blk += orphan_blocks;
        }
@@ -1045,6 +1048,7 @@ void init_ino_entry_info(struct f2fs_sb_info *sbi)
                INIT_RADIX_TREE(&sbi->ino_root[i], GFP_ATOMIC);
                spin_lock_init(&sbi->ino_lock[i]);
                INIT_LIST_HEAD(&sbi->ino_list[i]);
+               sbi->ino_num[i] = 0;
        }
 
        /*
@@ -1053,7 +1057,6 @@ void init_ino_entry_info(struct f2fs_sb_info *sbi)
         * orphan entries with the limitation one reserved segment
         * for cp pack we can have max 1020*504 orphan entries
         */
-       sbi->n_orphans = 0;
        sbi->max_orphans = (sbi->blocks_per_seg - F2FS_CP_PACKS -
                        NR_CURSEG_TYPE) * F2FS_ORPHANS_PER_BLOCK;
 }

diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c
index 86e6e92..74a0d78 100644 (file)
--- a/fs/f2fs/debug.c
+++ b/fs/f2fs/debug.c
@@ -119,6 +119,7 @@ static void update_mem_info(struct f2fs_sb_info *sbi)
 {
        struct f2fs_stat_info *si = F2FS_STAT(sbi);
        unsigned npages;
+       int i;
 
        if (si->base_mem)
                goto get_cache;
@@ -168,8 +169,9 @@ get_cache:
        si->cache_mem += npages << PAGE_CACHE_SHIFT;
        npages = META_MAPPING(sbi)->nrpages;
        si->cache_mem += npages << PAGE_CACHE_SHIFT;
-       si->cache_mem += sbi->n_orphans * sizeof(struct ino_entry);
        si->cache_mem += sbi->n_dirty_dirs * sizeof(struct dir_inode_entry);
+       for (i = 0; i <= UPDATE_INO; i++)
+               si->cache_mem += sbi->ino_num[i] * sizeof(struct ino_entry);
 }
 
 static int stat_show(struct seq_file *s, void *v)

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index d45f3f4..994b87e 100644 (file)
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -532,9 +532,9 @@ struct f2fs_sb_info {
        struct radix_tree_root ino_root[MAX_INO_ENTRY]; /* ino entry array */
        spinlock_t ino_lock[MAX_INO_ENTRY];             /* for ino entry lock */
        struct list_head ino_list[MAX_INO_ENTRY];       /* inode list head */
+       unsigned long ino_num[MAX_INO_ENTRY];           /* number of entries */
 
        /* for orphan inode, use 0'th array */
-       unsigned int n_orphans;                 /* # of orphan inodes */
        unsigned int max_orphans;               /* max orphan inodes */
 
        /* for directory inode management */