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/jffs2/fs.c | 4 ++-- fs/jffs2/os-linux.h | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) (limited to 'fs/jffs2') diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c index 7b6c24b14f8..2900ec3ec3a 100644 --- a/fs/jffs2/fs.c +++ b/fs/jffs2/fs.c @@ -192,9 +192,9 @@ int jffs2_setattr(struct dentry *dentry, struct iattr *iattr) return rc; } -int jffs2_statfs(struct super_block *sb, struct kstatfs *buf) +int jffs2_statfs(struct dentry *dentry, struct kstatfs *buf) { - struct jffs2_sb_info *c = JFFS2_SB_INFO(sb); + struct jffs2_sb_info *c = JFFS2_SB_INFO(dentry->d_sb); unsigned long avail; buf->f_type = JFFS2_SUPER_MAGIC; diff --git a/fs/jffs2/os-linux.h b/fs/jffs2/os-linux.h index cd4021bcb94..6b522356540 100644 --- a/fs/jffs2/os-linux.h +++ b/fs/jffs2/os-linux.h @@ -175,7 +175,7 @@ void jffs2_clear_inode (struct inode *); void jffs2_dirty_inode(struct inode *inode); struct inode *jffs2_new_inode (struct inode *dir_i, int mode, struct jffs2_raw_inode *ri); -int jffs2_statfs (struct super_block *, struct kstatfs *); +int jffs2_statfs (struct dentry *, struct kstatfs *); void jffs2_write_super (struct super_block *); int jffs2_remount_fs (struct super_block *, int *, char *); int jffs2_do_fill_super(struct super_block *sb, void *data, int silent); -- cgit v1.2.3