From 726c334223180e3c0197cc980a432681370d4baf Mon Sep 17 00:00:00 2001 From: David Howells Date: Fri, 23 Jun 2006 02:02:58 -0700 Subject: [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 Acked-by: Al Viro Cc: Nathan Scott Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/befs/linuxvfs.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'fs/befs') diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c index 6ed07a5f10c6..08201fab26cd 100644 --- a/fs/befs/linuxvfs.c +++ b/fs/befs/linuxvfs.c @@ -49,7 +49,7 @@ static int befs_nls2utf(struct super_block *sb, const char *in, int in_len, char **out, int *out_len); static void befs_put_super(struct super_block *); static int befs_remount(struct super_block *, int *, char *); -static int befs_statfs(struct super_block *, struct kstatfs *); +static int befs_statfs(struct dentry *, struct kstatfs *); static int parse_options(char *, befs_mount_options *); static const struct super_operations befs_sops = { @@ -880,8 +880,9 @@ befs_remount(struct super_block *sb, int *flags, char *data) } static int -befs_statfs(struct super_block *sb, struct kstatfs *buf) +befs_statfs(struct dentry *dentry, struct kstatfs *buf) { + struct super_block *sb = dentry->d_sb; befs_debug(sb, "---> befs_statfs()"); -- cgit v1.2.2