] nilfs2: use atomic64_t type for inodes_count and blocks_count fields in nilfs_root struct

The cp_inodes_count and cp_blocks_count are represented as __le64 type in
on-disk structure (struct nilfs_checkpoint).  But analogous fields in
in-core structure (struct nilfs_root) are represented by atomic_t type.

This patch replaces atomic_t on atomic64_t type in representation of
inodes_count and blocks_count fields in struct nilfs_root.

Signed-off-by: Vyacheslav Dubeyko <slava@dubeyko.com>
Acked-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Acked-by: Joern Engel <joern@logfs.org>
Cc: Clemens Eisserer <linuxhippy@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

6 files changed, 16 insertions, 14 deletions

diff --git a/fs/nilfs2/ifile.c b/fs/nilfs2/ifile.c
index d788a5928351..6548c7851b48 100644
--- a/fs/nilfs2/ifile.c
+++ b/fs/nilfs2/ifile.c
@@ -174,7 +174,7 @@ int nilfs_ifile_count_free_inodes(struct inode *ifile,
         *nmaxinodes = 0;
         *nfreeinodes = 0;
 
-        nused = atomic_read(&NILFS_I(ifile)->i_root->inodes_count);
+        nused = atomic64_read(&NILFS_I(ifile)->i_root->inodes_count);
         err = nilfs_palloc_count_max_entries(ifile, nused, nmaxinodes);
         if (likely(!err))
                 *nfreeinodes = *nmaxinodes - nused;
diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c
index bccfec8343c5..b1a5277cfd18 100644
--- a/fs/nilfs2/inode.c
+++ b/fs/nilfs2/inode.c
@@ -54,7 +54,7 @@ void nilfs_inode_add_blocks(struct inode *inode, int n)
 
         inode_add_bytes(inode, (1 << inode->i_blkbits) * n);
         if (root)
-                atomic_add(n, &root->blocks_count);
+                atomic64_add(n, &root->blocks_count);
 }
 
 void nilfs_inode_sub_blocks(struct inode *inode, int n)
@@ -63,7 +63,7 @@ void nilfs_inode_sub_blocks(struct inode *inode, int n)
 
         inode_sub_bytes(inode, (1 << inode->i_blkbits) * n);
         if (root)
-                atomic_sub(n, &root->blocks_count);
+                atomic64_sub(n, &root->blocks_count);
 }
 
 /**
@@ -369,7 +369,7 @@ struct inode *nilfs_new_inode(struct inode *dir, umode_t mode)
                 goto failed_ifile_create_inode;
         /* reference count of i_bh inherits from nilfs_mdt_read_block() */
 
-        atomic_inc(&root->inodes_count);
+        atomic64_inc(&root->inodes_count);
         inode_init_owner(inode, dir, mode);
         inode->i_ino = ino;
         inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
@@ -801,7 +801,7 @@ void nilfs_evict_inode(struct inode *inode)
 
         ret = nilfs_ifile_delete_inode(ii->i_root->ifile, inode->i_ino);
         if (!ret)
-                atomic_dec(&ii->i_root->inodes_count);
+                atomic64_dec(&ii->i_root->inodes_count);
 
         nilfs_clear_inode(inode);
 
diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c
index a5752a589932..bd88a7461063 100644
--- a/fs/nilfs2/segment.c
+++ b/fs/nilfs2/segment.c
@@ -835,9 +835,9 @@ static int nilfs_segctor_fill_in_checkpoint(struct nilfs_sc_info *sci)
         raw_cp->cp_snapshot_list.ssl_next = 0;
         raw_cp->cp_snapshot_list.ssl_prev = 0;
         raw_cp->cp_inodes_count =
-                cpu_to_le64(atomic_read(&sci->sc_root->inodes_count));
+                cpu_to_le64(atomic64_read(&sci->sc_root->inodes_count));
         raw_cp->cp_blocks_count =
-                cpu_to_le64(atomic_read(&sci->sc_root->blocks_count));
+                cpu_to_le64(atomic64_read(&sci->sc_root->blocks_count));
         raw_cp->cp_nblk_inc =
                 cpu_to_le64(sci->sc_nblk_inc + sci->sc_nblk_this_inc);
         raw_cp->cp_create = cpu_to_le64(sci->sc_seg_ctime);
diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c
index 7d257e78fbad..1427de5ebf4d 100644
--- a/fs/nilfs2/super.c
+++ b/fs/nilfs2/super.c
@@ -554,8 +554,10 @@ int nilfs_attach_checkpoint(struct super_block *sb, __u64 cno, int curr_mnt,
         if (err)
                 goto failed_bh;
 
-        atomic_set(&root->inodes_count, le64_to_cpu(raw_cp->cp_inodes_count));
-        atomic_set(&root->blocks_count, le64_to_cpu(raw_cp->cp_blocks_count));
+        atomic64_set(&root->inodes_count,
+                        le64_to_cpu(raw_cp->cp_inodes_count));
+        atomic64_set(&root->blocks_count,
+                        le64_to_cpu(raw_cp->cp_blocks_count));
 
         nilfs_cpfile_put_checkpoint(nilfs->ns_cpfile, cno, bh_cp);
 
@@ -647,7 +649,7 @@ static int nilfs_statfs(struct dentry *dentry, struct kstatfs *buf)
                          * curent inodes count as maximum possible and
                          * zero as free inodes value.
                          */
-                        nmaxinodes = atomic_read(&root->inodes_count);
+                        nmaxinodes = atomic64_read(&root->inodes_count);
                         nfreeinodes = 0;
                         err = 0;
                 } else
diff --git a/fs/nilfs2/the_nilfs.c b/fs/nilfs2/the_nilfs.c
index 41e6a04a561f..94c451ce6d24 100644
--- a/fs/nilfs2/the_nilfs.c
+++ b/fs/nilfs2/the_nilfs.c
@@ -764,8 +764,8 @@ nilfs_find_or_create_root(struct the_nilfs *nilfs, __u64 cno)
         new->ifile = NULL;
         new->nilfs = nilfs;
         atomic_set(&new->count, 1);
-        atomic_set(&new->inodes_count, 0);
-        atomic_set(&new->blocks_count, 0);
+        atomic64_set(&new->inodes_count, 0);
+        atomic64_set(&new->blocks_count, 0);
 
         rb_link_node(&new->rb_node, parent, p);
         rb_insert_color(&new->rb_node, &nilfs->ns_cptree);
diff --git a/fs/nilfs2/the_nilfs.h b/fs/nilfs2/the_nilfs.h
index be1267a34cea..de8cc53b4a5c 100644
--- a/fs/nilfs2/the_nilfs.h
+++ b/fs/nilfs2/the_nilfs.h
@@ -241,8 +241,8 @@ struct nilfs_root {
         struct the_nilfs *nilfs;
         struct inode *ifile;
 
-        atomic_t inodes_count;
-        atomic_t blocks_count;
+        atomic64_t inodes_count;
+        atomic64_t blocks_count;
 };
 
 /* Special checkpoint number */