pNFS: Use the standard I/O stateid when calling LAYOUTGET
Instead of having a private method for copying the open/delegation stateid, use the same call that is used for standard I/O through the MDS. Note that this means we transmit the stateid with a zero seqid, avoiding issues with NFS4ERR_OLD_STATEID. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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1 changed files with 9 additions and 5 deletions
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@ -1664,7 +1664,7 @@ pnfs_update_layout(struct inode *ino,
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.offset = pos,
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.length = count,
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};
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unsigned pg_offset, seq;
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unsigned pg_offset;
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struct nfs_server *server = NFS_SERVER(ino);
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struct nfs_client *clp = server->nfs_client;
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struct pnfs_layout_hdr *lo = NULL;
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@ -1754,10 +1754,14 @@ lookup_again:
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}
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first = true;
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do {
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seq = read_seqbegin(&ctx->state->seqlock);
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nfs4_stateid_copy(&stateid, &ctx->state->stateid);
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} while (read_seqretry(&ctx->state->seqlock, seq));
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if (nfs4_select_rw_stateid(ctx->state,
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iomode == IOMODE_RW ? FMODE_WRITE : FMODE_READ,
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NULL, &stateid, NULL) != 0) {
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trace_pnfs_update_layout(ino, pos, count,
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iomode, lo, lseg,
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PNFS_UPDATE_LAYOUT_INVALID_OPEN);
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goto out_unlock;
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}
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} else {
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nfs4_stateid_copy(&stateid, &lo->plh_stateid);
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}
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