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-rw-r--r--fs/nilfs2/super.c31
1 files changed, 27 insertions, 4 deletions
diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c
index c7d1f9f18b09..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);
@@ -609,6 +611,7 @@ static int nilfs_statfs(struct dentry *dentry, struct kstatfs *buf)
unsigned long overhead;
unsigned long nrsvblocks;
sector_t nfreeblocks;
+ u64 nmaxinodes, nfreeinodes;
int err;
/*
@@ -633,14 +636,34 @@ static int nilfs_statfs(struct dentry *dentry, struct kstatfs *buf)
if (unlikely(err))
return err;
+ err = nilfs_ifile_count_free_inodes(root->ifile,
+ &nmaxinodes, &nfreeinodes);
+ if (unlikely(err)) {
+ printk(KERN_WARNING
+ "NILFS warning: fail to count free inodes: err %d.\n",
+ err);
+ if (err == -ERANGE) {
+ /*
+ * If nilfs_palloc_count_max_entries() returns
+ * -ERANGE error code then we simply treat
+ * curent inodes count as maximum possible and
+ * zero as free inodes value.
+ */
+ nmaxinodes = atomic64_read(&root->inodes_count);
+ nfreeinodes = 0;
+ err = 0;
+ } else
+ return err;
+ }
+
buf->f_type = NILFS_SUPER_MAGIC;
buf->f_bsize = sb->s_blocksize;
buf->f_blocks = blocks - overhead;
buf->f_bfree = nfreeblocks;
buf->f_bavail = (buf->f_bfree >= nrsvblocks) ?
(buf->f_bfree - nrsvblocks) : 0;
- buf->f_files = atomic_read(&root->inodes_count);
- buf->f_ffree = 0; /* nilfs_count_free_inodes(sb); */
+ buf->f_files = nmaxinodes;
+ buf->f_ffree = nfreeinodes;
buf->f_namelen = NILFS_NAME_LEN;
buf->f_fsid.val[0] = (u32)id;
buf->f_fsid.val[1] = (u32)(id >> 32);