lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry

Browse Source 
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>
This commit is contained in:
David Howells
2006-06-23 02:02:58 -07:00
committed by Linus Torvalds
parent 454e2398be
commit 726c334223
60 changed files with 175 additions and 144 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
fs/adfs/super.c
View File

@@ -196,17 +196,17 @@ static int adfs_remount(struct super_block *sb, int *flags, char *data)
return parse_options(sb, data);
}
static int adfs_statfs(struct super_block *sb, struct kstatfs *buf)
static int adfs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct adfs_sb_info *asb = ADFS_SB(sb);
struct adfs_sb_info *asb = ADFS_SB(dentry->d_sb);
buf->f_type = ADFS_SUPER_MAGIC;
buf->f_namelen = asb->s_namelen;
buf->f_bsize = sb->s_blocksize;
buf->f_bsize = dentry->d_sb->s_blocksize;
buf->f_blocks = asb->s_size;
buf->f_files = asb->s_ids_per_zone * asb->s_map_size;
buf->f_bavail =
buf->f_bfree = adfs_map_free(sb);
buf->f_bfree = adfs_map_free(dentry->d_sb);
buf->f_ffree = (long)(buf->f_bfree * buf->f_files) / (long)buf->f_blocks;
return 0;