Commit 682821d9 authored Jan 21, 2021 by Trond Myklebust Committed by Greg Kroah-Hartman Feb 13, 2021

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



[ Upstream commit 08bd8dbe88825760e953759d7ec212903a026c75 ]

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: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

parent 6259963d

fs/nfs/pnfs.c

+7 −1

Original line number	Diff line number	Diff line
		@@ -2301,7 +2301,13 @@ 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;
		}