Commit 08bd8dbe authored by Trond Myklebust's avatar Trond Myklebust
Browse files

pNFS/NFSv4: Try to return invalid layout in pnfs_layout_process() 



If the server returns a new stateid that does not match the one in our
cache, then try to return the one we hold instead of just invalidating
it on the client side. This ensures that both client and server will
agree that the stateid is invalid.

Signed-off-by: default avatarTrond Myklebust <trond.myklebust@hammerspace.com>
parent 814b8497

fs/nfs/pnfs.c

+7 −2
Original line number Diff line number Diff line
@@ -2398,7 +2398,13 @@ pnfs_layout_process(struct nfs4_layoutget *lgp) 
		 * We got an entirely new state ID.  Mark all segments for the

		 * inode invalid, and retry the layoutget

		 */

		pnfs_mark_layout_stateid_invalid(lo, &free_me);

		struct pnfs_layout_range range = {

			.iomode = IOMODE_ANY,

			.length = NFS4_MAX_UINT64,

		};

		pnfs_set_plh_return_info(lo, IOMODE_ANY, 0);

		pnfs_mark_matching_lsegs_return(lo, &lo->plh_return_segs,

						&range, 0);

		goto out_forget;

	}
@@ -2417,7 +2423,6 @@ pnfs_layout_process(struct nfs4_layoutget *lgp) 
	spin_unlock(&ino->i_lock);

	lseg->pls_layout = lo;

	NFS_SERVER(ino)->pnfs_curr_ld->free_lseg(lseg);

	pnfs_free_lseg_list(&free_me);

	return ERR_PTR(-EAGAIN);

}