Attachment 313397 Details for Bug 531633

[patch] Patch as committed.

nfs-06-dont-bother-with-check_mnt-in-do_add_mount-on-shrinkable-ones (text/plain), 1021 bytes, created by Neil Brown on 2009-08-18 01:03:45 UTC

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Creator: Neil Brown

Created: 2009-08-18 01:03:45 UTC

Size: 1021 bytes

patch

obsolete

>Git: dd5cae6e9772ecc62fd374f7a8ec10eb51c96c4d
>From: Al Viro <viro@zeniv.linux.org.uk>
>Subject: Don't bother with check_mnt() in do_add_mount() on shrinkable ones
>Date: Tue Apr 7 12:21:18 2009 -0400
>Patch-mainline: 2.7.30
>References: bnc#490030, bnc#531633
>
>These guys are what we add as submounts; checks for "is that attached in
>our namespace" are simply irrelevant for those and counterproductive for
>use of private vfsmount trees a-la what NFS folks want.
>
>Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
>Acked-by: NeilBrown <neilb@suse.de>
>
>---
> fs/namespace.c |    2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
>--- linux-2.6.27-SLE11_BRANCH.orig/fs/namespace.c
>+++ linux-2.6.27-SLE11_BRANCH/fs/namespace.c
>@@ -1658,7 +1658,7 @@ int do_add_mount(struct vfsmount *newmnt
> 	       follow_down(&path->mnt, &path->dentry))
> 		;
> 	err = -EINVAL;
>-	if (!check_mnt(path->mnt))
>+	if (!(mnt_flags & MNT_SHRINKABLE) && !check_mnt(path->mnt))
> 		goto unlock;
> 
> 	/* Refuse the same filesystem on the same mount point */

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Attachments on bug 531633: 313397