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NFSv4: Don't use the zero stateid with layoutget

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The NFSv4.1 protocol explicitly forbids us from using the zero stateid
together with layoutget, so when we see that nfs4_select_rw_stateid()
is unable to return a valid delegation, lock or open stateid, then
we should initiate recovery and retry.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Trond Myklebust
2019-07-16 15:38:28 -04:00
parent 7402a4fedc
commit d9aba2b40d
2 changed files with 12 additions and 5 deletions
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3
fs/nfs/nfs4state.c
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@@ -1064,8 +1064,7 @@ int nfs4_select_rw_stateid(struct nfs4_state *state,
* choose to use.
*/
goto out;
nfs4_copy_open_stateid(dst, state);
ret = 0;
ret = nfs4_copy_open_stateid(dst, state) ? 0 : -EAGAIN;
out:
if (nfs_server_capable(state->inode, NFS_CAP_STATEID_NFSV41))
dst->seqid = 0;