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| author | David Howells <dhowells@redhat.com> | 2006-06-23 02:02:58 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-23 07:42:45 -0700 |
| commit | 726c334223180e3c0197cc980a432681370d4baf (patch) | |
| tree | 8327b354bb3dc959a6606051ae6f8d4d035e38a2 /fs/hostfs | |
| parent | 454e2398be9b9fa30433fccc548db34d19aa9958 (diff) | |
| download | lwn-726c334223180e3c0197cc980a432681370d4baf.tar.gz lwn-726c334223180e3c0197cc980a432681370d4baf.zip | |
[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/hostfs')
| -rw-r--r-- | fs/hostfs/hostfs_kern.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c index 04035e08f5c1..8e0d37743e7c 100644 --- a/fs/hostfs/hostfs_kern.c +++ b/fs/hostfs/hostfs_kern.c @@ -239,7 +239,7 @@ static int read_inode(struct inode *ino) return(err); } -int hostfs_statfs(struct super_block *sb, struct kstatfs *sf) +int hostfs_statfs(struct dentry *dentry, struct kstatfs *sf) { /* do_statfs uses struct statfs64 internally, but the linux kernel * struct statfs still has 32-bit versions for most of these fields, @@ -252,7 +252,7 @@ int hostfs_statfs(struct super_block *sb, struct kstatfs *sf) long long f_files; long long f_ffree; - err = do_statfs(HOSTFS_I(sb->s_root->d_inode)->host_filename, + err = do_statfs(HOSTFS_I(dentry->d_sb->s_root->d_inode)->host_filename, &sf->f_bsize, &f_blocks, &f_bfree, &f_bavail, &f_files, &f_ffree, &sf->f_fsid, sizeof(sf->f_fsid), &sf->f_namelen, sf->f_spare); |