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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/befs/linuxvfs.c
parent454e2398be9b9fa30433fccc548db34d19aa9958 (diff)
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[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/befs/linuxvfs.c')
-rw-r--r--fs/befs/linuxvfs.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c
index 6ed07a5..08201fa 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()");