From: Trond Myklebust trond.myklebust@hammerspace.com
stable inclusion from stable-5.10.67 commit 9aa7a3ffb11c8b2e4004a9471cac59c19475b006 bugzilla: 182619 https://gitee.com/openeuler/kernel/issues/I4EWO7
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit d6236a98b3bab07c0a1455fd1ab46f79c3978cdc ]
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: aa95edf309ef ("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 Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com
Signed-off-by: Chen Jun chenjun102@huawei.com --- fs/nfs/pnfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 741b6283ac9c..5370e082aded 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -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 */