[PATCH 5/20] fs/efs: return f_fsid for statfs(2)

Coly Li
2009-01-19T17:28:11Z

This patch makes efs return f_fsid info for statfs(2), and does a little variable renaming in
efs_statfs().

Signed-off-by: Coly Li <coly.li@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
---
fs/efs/super.c | 20 ++++++++++++--------
1 files changed, 12 insertions(+), 8 deletions(-)

diff --git a/fs/efs/super.c b/fs/efs/super.c
index 73b19cf..f049428 100644
--- a/fs/efs/super.c
+++ b/fs/efs/super.c
@@ -329,18 +329,22 @@ out_no_fs:
}

static int efs_statfs(struct dentry *dentry, struct kstatfs *buf) {
- struct efs_sb_info *sb = SUPER_INFO(dentry->d_sb);
+ struct super_block *sb = dentry->d_sb;
+ struct efs_sb_info *sbi = SUPER_INFO(sb);
+ u64 id = huge_encode_dev(sb->s_bdev->bd_dev);

buf->f_type = EFS_SUPER_MAGIC; /* efs magic number */
buf->f_bsize = EFS_BLOCKSIZE; /* blocksize */
- buf->f_blocks = sb->total_groups * /* total data blocks */
- (sb->group_size - sb->inode_blocks);
- buf->f_bfree = sb->data_free; /* free data blocks */
- buf->f_bavail = sb->data_free; /* free blocks for non-root */
- buf->f_files = sb->total_groups * /* total inodes */
- sb->inode_blocks *
+ buf->f_blocks = sbi->total_groups * /* total data blocks */
+ (sbi->group_size - sbi->inode_blocks);
+ buf->f_bfree = sbi->data_free; /* free data blocks */
+ buf->f_bavail = sbi->data_free; /* free blocks for non-root */
+ buf->f_files = sbi->total_groups * /* total inodes */
+ sbi->inode_blocks *
(EFS_BLOCKSIZE / sizeof(struct efs_dinode));
- buf->f_ffree = sb->inode_free; /* free inodes */
+ buf->f_ffree = sbi->inode_free; /* free inodes */
+ buf->f_fsid.val[0] = (u32)id;
+ buf->f_fsid.val[1] = (u32)(id >> 32);
buf->f_namelen = EFS_MAXNAMELEN; /* max filename length */

return 0;

--
Coly Li
SuSE Labs