f2fs: add the number of inline_data files to status info

This patch adds the number of inline_data files into the status information.
Note that the number is reset whenever the filesystem is newly mounted.

Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

4 files changed, 26 insertions, 7 deletions

diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c
index 61adbcbe9b87..711a0d4d1cba 100644
--- a/fs/f2fs/debug.c
+++ b/fs/f2fs/debug.c
@@ -45,6 +45,7 @@ static void update_general_status(struct f2fs_sb_info *sbi)
         si->valid_count = valid_user_blocks(sbi);
         si->valid_node_count = valid_node_count(sbi);
         si->valid_inode_count = valid_inode_count(sbi);
+        si->inline_inode = sbi->inline_inode;
         si->utilization = utilization(sbi);
 
         si->free_segs = free_segments(sbi);
@@ -200,6 +201,8 @@ static int stat_show(struct seq_file *s, void *v)
                 seq_printf(s, "Other: %u)\n  - Data: %u\n",
                            si->valid_node_count - si->valid_inode_count,
                            si->valid_count - si->valid_node_count);
+                seq_printf(s, "  - Inline_data Inode: %u\n",
+                           si->inline_inode);
                 seq_printf(s, "\nMain area: %d segs, %d secs %d zones\n",
                            si->main_area_segs, si->main_area_sections,
                            si->main_area_zones);
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index af35039c38f8..0b6badadbfd8 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -460,6 +460,7 @@ struct f2fs_sb_info {
         unsigned int segment_count[2];          /* # of allocated segments */
         unsigned int block_count[2];            /* # of allocated blocks */
         int total_hit_ext, read_hit_ext;        /* extent cache hit ratio */
+        int inline_inode;                       /* # of inline_data inodes */
         int bg_gc;                              /* background gc calls */
         unsigned int n_dirty_dirs;              /* # of dir inodes */
 #endif
@@ -992,6 +993,11 @@ static inline int inline_xattr_size(struct inode *inode)
                 return 0;
 }
 
+static inline int f2fs_has_inline_data(struct inode *inode)
+{
+        return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA);
+}
+
 static inline void *inline_data_addr(struct page *page)
 {
         struct f2fs_inode *ri;
@@ -1201,7 +1207,7 @@ struct f2fs_stat_info {
         int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta;
         int nats, sits, fnids;
         int total_count, utilization;
-        int bg_gc;
+        int bg_gc, inline_inode;
         unsigned int valid_count, valid_node_count, valid_inode_count;
         unsigned int bimodal, avg_vblocks;
         int util_free, util_valid, util_invalid;
@@ -1230,6 +1236,17 @@ static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
 #define stat_dec_dirty_dir(sbi)         ((sbi)->n_dirty_dirs--)
 #define stat_inc_total_hit(sb)          ((F2FS_SB(sb))->total_hit_ext++)
 #define stat_inc_read_hit(sb)           ((F2FS_SB(sb))->read_hit_ext++)
+#define stat_inc_inline_inode(inode)                                    \
+        do {                                                            \
+                if (f2fs_has_inline_data(inode))                        \
+                        ((F2FS_SB(inode->i_sb))->inline_inode++);       \
+        } while (0)
+#define stat_dec_inline_inode(inode)                                    \
+        do {                                                            \
+                if (f2fs_has_inline_data(inode))                        \
+                        ((F2FS_SB(inode->i_sb))->inline_inode--);       \
+        } while (0)
+
 #define stat_inc_seg_type(sbi, curseg)                                  \
                 ((sbi)->segment_count[(curseg)->alloc_type]++)
 #define stat_inc_block_count(sbi, curseg)                               \
@@ -1273,6 +1290,8 @@ void f2fs_destroy_root_stats(void);
 #define stat_dec_dirty_dir(sbi)
 #define stat_inc_total_hit(sb)
 #define stat_inc_read_hit(sb)
+#define stat_inc_inline_inode(inode)
+#define stat_dec_inline_inode(inode)
 #define stat_inc_seg_type(sbi, curseg)
 #define stat_inc_block_count(sbi, curseg)
 #define stat_inc_seg_count(si, type)
@@ -1299,7 +1318,6 @@ extern const struct inode_operations f2fs_special_inode_operations;
 /*
  * inline.c
  */
-inline int f2fs_has_inline_data(struct inode *);
 bool f2fs_may_inline(struct inode *);
 int f2fs_read_inline_data(struct inode *, struct page *);
 int f2fs_convert_inline_data(struct inode *, pgoff_t);
diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c
index e8891aa3ab8c..3c9261cd215f 100644
--- a/fs/f2fs/inline.c
+++ b/fs/f2fs/inline.c
@@ -13,11 +13,6 @@
 
 #include "f2fs.h"
 
-inline int f2fs_has_inline_data(struct inode *inode)
-{
-        return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA);
-}
-
 bool f2fs_may_inline(struct inode *inode)
 {
         struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
@@ -113,6 +108,7 @@ static int __f2fs_convert_inline_data(struct inode *inode, struct page *page)
         zero_user_segment(ipage, INLINE_DATA_OFFSET,
                                  INLINE_DATA_OFFSET + MAX_INLINE_DATA);
         clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA);
+        stat_dec_inline_inode(inode);
 
         sync_inode_page(&dn);
         f2fs_put_page(ipage, 1);
@@ -165,6 +161,7 @@ int f2fs_write_inline_data(struct inode *inode,
         if (!f2fs_has_inline_data(inode)) {
                 truncate_data_blocks_range(&dn, 1);
                 set_inode_flag(F2FS_I(inode), FI_INLINE_DATA);
+                stat_inc_inline_inode(inode);
         }
 
         sync_inode_page(&dn);
diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c
index a91f45177cd9..915f9a8f3ee6 100644
--- a/fs/f2fs/inode.c
+++ b/fs/f2fs/inode.c
@@ -277,6 +277,7 @@ void f2fs_evict_inode(struct inode *inode)
 
         f2fs_lock_op(sbi);
         remove_inode_page(inode);
+        stat_dec_inline_inode(inode);
         f2fs_unlock_op(sbi);
 
         sb_end_intwrite(inode->i_sb);