f2fs: add infra for ino management

This patch changes the naming of orphan-related data structures to use as
inode numbers managed globally.
Later, we can use this facility for managing any inode number lists.

Reviewed-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

1 files changed, 13 insertions, 6 deletions

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index e999eec200b7..b6fa6ec54f98 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -100,8 +100,13 @@ enum {
         META_SSA
 };
 
-/* for the list of orphan inodes */
-struct orphan_inode_entry {
+/* for the list of ino */
+enum {
+        ORPHAN_INO,             /* for orphan ino list */
+        MAX_INO_ENTRY,          /* max. list */
+};
+
+struct ino_entry {
         struct list_head list;  /* list head */
         nid_t ino;              /* inode number */
 };
@@ -450,9 +455,11 @@ struct f2fs_sb_info {
         bool por_doing;                         /* recovery is doing or not */
         wait_queue_head_t cp_wait;
 
-        /* for orphan inode management */
-        struct list_head orphan_inode_list;     /* orphan inode list */
-        spinlock_t orphan_inode_lock;           /* for orphan inode list */
+        /* for inode management */
+        spinlock_t ino_lock[MAX_INO_ENTRY];             /* for ino entry lock */
+        struct list_head ino_list[MAX_INO_ENTRY];       /* inode list head */
+
+        /* for orphan inode, use 0'th array */
         unsigned int n_orphans;                 /* # of orphan inodes */
         unsigned int max_orphans;               /* max orphan inodes */
 
@@ -1255,7 +1262,7 @@ void add_dirty_dir_inode(struct inode *);
 void remove_dirty_dir_inode(struct inode *);
 void sync_dirty_dir_inodes(struct f2fs_sb_info *);
 void write_checkpoint(struct f2fs_sb_info *, bool);
-void init_orphan_info(struct f2fs_sb_info *);
+void init_ino_entry_info(struct f2fs_sb_info *);
 int __init create_checkpoint_caches(void);
 void destroy_checkpoint_caches(void);