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NFS: Add ability to send MOUNTPROC_UMNT to the kernel's mountd client

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After certain failure modes of an NFS mount, an NFS client should send
a MOUNTPROC_UMNT request to remove the just-added mount entry from the
server's mount table.  While no-one should rely on the accuracy of the
server's mount table, sending a UMNT is simply being a good internet
neighbor.

Since NFS mount processing is handled in the kernel now, we will need
a function in the kernel's mountd client that can post a MOUNTRPC_UMNT
request, in order to handle these failure modes.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Chuck Lever
2009-08-09 15:09:30 -04:00
committed by Trond Myklebust
parent f3f4f4ed26
commit 0b524123c9
2 changed files with 80 additions and 0 deletions
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fs/nfs/internal.h
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@@ -102,6 +102,7 @@ struct nfs_mount_request {
};
extern int nfs_mount(struct nfs_mount_request *info);
extern void nfs_umount(const struct nfs_mount_request *info);
/* client.c */
extern struct rpc_program nfs_program;