forge/linux-uconsole
1
0
Fork 0
Code Issues 1 Pull requests Projects Releases Packages Wiki Activity Actions

NFSv4/pnfs: The layout barrier indicate a minimal value for the seqid

Browse source 
[ Upstream commit d6236a98b3 ]

The intention of the layout barrier is to ensure that we do not update
the layout to match an older value than the current expectation. Fix the
test in pnfs_layout_stateid_blocked() to reflect that it is legal for
the seqid of the stateid to match that of the barrier.

Fixes: aa95edf309 ("NFSv4/pnfs: Fix the layout barrier update")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Trond Myklebust 2021-07-23 08:57:21 -04:00 • committed by Greg Kroah-Hartman
commit 9aa7a3ffb1
1 changed files with 1 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

2
fs/nfs/pnfs.c
View file

@ -1004,7 +1004,7 @@ pnfs_layout_stateid_blocked(const struct pnfs_layout_hdr *lo,
{
u32 seqid = be32_to_cpu(stateid->seqid);
return !pnfs_seqid_is_newer(seqid, lo->plh_barrier) && lo->plh_barrier;
return lo->plh_barrier && pnfs_seqid_is_newer(lo->plh_barrier, seqid);
}
/* lget is set to 1 if called from inside send_layoutget call chain */