Prev: [125/197] quota: Fix possible dq_flags corruption
Next: [156/197] sched: Fix a race between ttwu() and migrate_task()
From: Greg KH on 22 Apr 2010 15:50
2.6.32-stable review patch. If anyone has any objections, please let us know.

------------------

From: Al Viro <viro(a)zeniv.linux.org.uk>

commit 462d60577a997aa87c935ae4521bd303733a9f2b upstream.

RFC says we need to follow the chain of mounts if there's more
than one stacked on that point.

Signed-off-by: Al Viro <viro(a)zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)suse.de>

---
fs/nfsd/nfs4xdr.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)

--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -2129,9 +2129,15 @@ out_acl:
* and this is the root of a cross-mounted filesystem.
*/
if (ignore_crossmnt == 0 &&
- exp->ex_path.mnt->mnt_root->d_inode == dentry->d_inode) {
- err = vfs_getattr(exp->ex_path.mnt->mnt_parent,
- exp->ex_path.mnt->mnt_mountpoint, &stat);
+ dentry == exp->ex_path.mnt->mnt_root) {
+ struct path path = exp->ex_path;
+ path_get(&path);
+ while (follow_up(&path)) {
+ if (path.dentry != path.mnt->mnt_root)
+ break;
+ }
+ err = vfs_getattr(path.mnt, path.dentry, &stat);
+ path_put(&path);
if (err)
goto out_nfserr;
}


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo(a)vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
 | 
Pages: 1
Prev: [125/197] quota: Fix possible dq_flags corruption
Next: [156/197] sched: Fix a race between ttwu() and migrate_task()