nilfs2: move next generation counter into nilfs object
Moves s_next_generation counter and a spinlock protecting it to nilfs
object from nilfs_sb_info structure.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c
index dd5d6d6..7a3dbe4 100644
--- a/fs/nilfs2/inode.c
+++ b/fs/nilfs2/inode.c
@@ -295,7 +295,7 @@
struct inode *nilfs_new_inode(struct inode *dir, int mode)
{
struct super_block *sb = dir->i_sb;
- struct nilfs_sb_info *sbi = NILFS_SB(sb);
+ struct the_nilfs *nilfs = NILFS_SB(sb)->s_nilfs;
struct inode *inode;
struct nilfs_inode_info *ii;
struct nilfs_root *root;
@@ -340,9 +340,9 @@
/* ii->i_dir_acl = 0; */
ii->i_dir_start_lookup = 0;
nilfs_set_inode_flags(inode);
- spin_lock(&sbi->s_next_gen_lock);
- inode->i_generation = sbi->s_next_generation++;
- spin_unlock(&sbi->s_next_gen_lock);
+ spin_lock(&nilfs->ns_next_gen_lock);
+ inode->i_generation = nilfs->ns_next_generation++;
+ spin_unlock(&nilfs->ns_next_gen_lock);
insert_inode_hash(inode);
err = nilfs_init_acl(inode, dir);
diff --git a/fs/nilfs2/sb.h b/fs/nilfs2/sb.h
index 3232e75..6f190df 100644
--- a/fs/nilfs2/sb.h
+++ b/fs/nilfs2/sb.h
@@ -40,10 +40,6 @@
/* Segment constructor */
struct nilfs_sc_info *s_sc_info; /* segment constructor info */
-
- /* Inode allocator */
- spinlock_t s_next_gen_lock;
- u32 s_next_generation;
};
static inline struct nilfs_sb_info *NILFS_SB(struct super_block *sb)
diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c
index 6dc8b3c..1368c42 100644
--- a/fs/nilfs2/super.c
+++ b/fs/nilfs2/super.c
@@ -43,7 +43,6 @@
#include <linux/init.h>
#include <linux/blkdev.h>
#include <linux/parser.h>
-#include <linux/random.h>
#include <linux/crc32.h>
#include <linux/vfs.h>
#include <linux/writeback.h>
@@ -943,16 +942,6 @@
if (err)
goto failed_nilfs;
- /*
- * Following initialization is overlapped because
- * nilfs_sb_info structure has been cleared at the beginning.
- * But we reserve them to keep our interest and make ready
- * for the future change.
- */
- get_random_bytes(&sbi->s_next_generation,
- sizeof(sbi->s_next_generation));
- spin_lock_init(&sbi->s_next_gen_lock);
-
sb->s_op = &nilfs_sops;
sb->s_export_op = &nilfs_export_ops;
sb->s_root = NULL;
diff --git a/fs/nilfs2/the_nilfs.c b/fs/nilfs2/the_nilfs.c
index 40239a9..1bf695e 100644
--- a/fs/nilfs2/the_nilfs.c
+++ b/fs/nilfs2/the_nilfs.c
@@ -25,6 +25,7 @@
#include <linux/slab.h>
#include <linux/blkdev.h>
#include <linux/backing-dev.h>
+#include <linux/random.h>
#include <linux/crc32.h>
#include "nilfs.h"
#include "segment.h"
@@ -78,6 +79,7 @@
INIT_LIST_HEAD(&nilfs->ns_dirty_files);
INIT_LIST_HEAD(&nilfs->ns_gc_inodes);
spin_lock_init(&nilfs->ns_inode_lock);
+ spin_lock_init(&nilfs->ns_next_gen_lock);
spin_lock_init(&nilfs->ns_last_segment_lock);
nilfs->ns_cptree = RB_ROOT;
spin_lock_init(&nilfs->ns_cptree_lock);
@@ -593,6 +595,9 @@
nilfs->ns_blocksize_bits = sb->s_blocksize_bits;
nilfs->ns_blocksize = blocksize;
+ get_random_bytes(&nilfs->ns_next_generation,
+ sizeof(nilfs->ns_next_generation));
+
err = nilfs_store_disk_layout(nilfs, sbp);
if (err)
goto failed_sbh;
diff --git a/fs/nilfs2/the_nilfs.h b/fs/nilfs2/the_nilfs.h
index 6106ec5..3ecc968f 100644
--- a/fs/nilfs2/the_nilfs.h
+++ b/fs/nilfs2/the_nilfs.h
@@ -74,6 +74,8 @@
* @ns_dirty_files: list of dirty files
* @ns_inode_lock: lock protecting @ns_dirty_files
* @ns_gc_inodes: dummy inodes to keep live blocks
+ * @ns_next_generation: next generation number for inodes
+ * @ns_next_gen_lock: lock protecting @ns_next_generation
* @ns_mount_opt: mount options
* @ns_resuid: uid for reserved blocks
* @ns_resgid: gid for reserved blocks
@@ -159,6 +161,10 @@
/* GC inode list */
struct list_head ns_gc_inodes;
+ /* Inode allocator */
+ u32 ns_next_generation;
+ spinlock_t ns_next_gen_lock;
+
/* Mount options */
unsigned long ns_mount_opt;
