evie/android_kernel_oneplus_msm8998
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pNFS: The client must not do I/O to the DS if it's lease has expired

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commit b88fa69eaa8649f11828158c7b65c4bcd886ebd5 upstream.

Ensure that the client conforms to the normative behaviour described in
RFC5661 Section 12.7.2: "If a client believes its lease has expired,
it MUST NOT send I/O to the storage device until it has validated its
lease."

So ensure that we wait for the lease to be validated before using
the layout.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Trond Myklebust 2016-08-23 11:19:33 -04:00 • committed by Greg Kroah-Hartman
parent a37004d339
commit ab8cf65350
1 changed files with 1 additions and 0 deletions
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fs/nfs/pnfs.c
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@ -1530,6 +1530,7 @@ pnfs_update_layout(struct inode *ino,
goto out;
lookup_again:
nfs4_client_recover_expired_lease(clp);
first = false;
spin_lock(&ino->i_lock);
lo = pnfs_find_alloc_layout(ino, ctx, gfp_flags);