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NFS/pnfs: Do not clobber existing pgio_done_cb in nfs4_proc_read_setup

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If a pNFS client sets hdr->pgio_done_cb, then we should not overwrite that
in nfs4_proc_read_setup()

Fixes: 75bf47ebf6 ("pNFS/flexfile: Fix erroneous fall back to...")
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Trond Myklebust 2016-06-28 13:54:09 -04:00
parent 5c6e5b60aa
commit ca857cc1d4
1 changed files with 2 additions and 1 deletions
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3
fs/nfs/nfs4proc.c
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@ -4392,7 +4392,8 @@ static void nfs4_proc_read_setup(struct nfs_pgio_header *hdr,
struct rpc_message *msg)
{
hdr->timestamp = jiffies;
hdr->pgio_done_cb = nfs4_read_done_cb;
if (!hdr->pgio_done_cb)
hdr->pgio_done_cb = nfs4_read_done_cb;
msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ];
nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 0);
}