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authorDavid Howells <dhowells@redhat.com>2006-06-23 02:02:58 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-23 07:42:45 -0700
commit726c334223180e3c0197cc980a432681370d4baf (patch)
tree8327b354bb3dc959a6606051ae6f8d4d035e38a2 /fs/hfs
parent454e2398be9b9fa30433fccc548db34d19aa9958 (diff)
downloadconfigs-726c334223180e3c0197cc980a432681370d4baf.tar.gz
[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry
Give the statfs superblock operation a dentry pointer rather than a superblock pointer. This complements the get_sb() patch. That reduced the significance of sb->s_root, allowing NFS to place a fake root there. However, NFS does require a dentry to use as a target for the statfs operation. This permits the root in the vfsmount to be used instead. linux/mount.h has been added where necessary to make allyesconfig build successfully. Interest has also been expressed for use with the FUSE and XFS filesystems. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Al Viro <viro@zeniv.linux.org.uk> Cc: Nathan Scott <nathans@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/hfs')
-rw-r--r--fs/hfs/super.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/hfs/super.c b/fs/hfs/super.c
index ee5b80a409e..d9227bf14e8 100644
--- a/fs/hfs/super.c
+++ b/fs/hfs/super.c
@@ -80,8 +80,10 @@ static void hfs_put_super(struct super_block *sb)
*
* changed f_files/f_ffree to reflect the fs_ablock/free_ablocks.
*/
-static int hfs_statfs(struct super_block *sb, struct kstatfs *buf)
+static int hfs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
+ struct super_block *sb = dentry->d_sb;
+
buf->f_type = HFS_SUPER_MAGIC;
buf->f_bsize = sb->s_blocksize;
buf->f_blocks = (u32)HFS_SB(sb)->fs_ablocks * HFS_SB(sb)->fs_div;