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NFSD: Teach nfsd_mountpoint() auto mounts

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Currently nfsd_mountpoint() tests for mount points using d_mountpoint(),
this works only when a mount point is already uncovered.
In our case the mount point is of type auto mount and can be coverted.
i.e. ->d_automount() was not called.

Using d_managed() nfsd_mountpoint() can test whether a mount point is
either already uncovered or can be uncovered later.

Signed-off-by: Richard Weinberger <richard@nod.at>
Reviewed-by: Ian Kent <raven@themaw.net>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Richard Weinberger 2022-12-07 09:43:07 +01:00 committed by Chuck Lever
parent c9c3395d5e
commit 50f5fdaea9
1 changed files with 1 additions and 1 deletions
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2
fs/nfsd/vfs.c
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@ -223,7 +223,7 @@ int nfsd_mountpoint(struct dentry *dentry, struct svc_export *exp)
return 1;
if (nfsd4_is_junction(dentry))
return 1;
if (d_mountpoint(dentry))
if (d_managed(dentry))
/*
* Might only be a mountpoint in a different namespace,
* but we need to check.