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pnfs: retry after a bad stateid error from layoutget 

Currently we fall through to nfs4_async_handle_error when we get
a bad stateid error back from layoutget.  nfs4_async_handle_error
with a NULL state argument will never retry the operations but return
the error to higher layer, causing an avoiable fallback to MDS I/O.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Christoph Hellwig 2014-08-21 11:09:21 -05:00 committed by Trond Myklebust
parent 362f74745c
commit defb846088
1 changed files with 7 additions and 2 deletions
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9
fs/nfs/nfs4proc.c
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@ -7577,11 +7577,16 @@ static void nfs4_layoutget_done(struct rpc_task *task, void *calldata)
} else {
LIST_HEAD(head);
/*
* Mark the bad layout state as invalid, then retry
* with the current stateid.
*/
pnfs_mark_matching_lsegs_invalid(lo, &head, NULL);
spin_unlock(&inode->i_lock);
/* Mark the bad layout state as invalid, then
* retry using the open stateid. */
pnfs_free_lseg_list(&head);
task->tk_status = 0;
rpc_restart_call_prepare(task);
}
}
if (nfs4_async_handle_error(task, server, state) == -EAGAIN)