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authorTrond Myklebust <trond.myklebust@primarydata.com>2017-10-04 13:49:12 -0400
committerTrond Myklebust <trond.myklebust@primarydata.com>2017-10-04 14:06:54 -0400
commite8fa33a6f6c7688591542db955794b69b8cecc55 (patch)
tree7a33cdcf2bfb287eeb0f8550fb3cb490df612dea
parent0a47df11bfc31e1ceae7f91cea84d3bff500475d (diff)
downloadlinux-e8fa33a6f6c7688591542db955794b69b8cecc55.tar.bz2
NFSv4/pnfs: Fix an infinite layoutget loop
Since we can now use a lock stateid or a delegation stateid, that differs from the context stateid, we need to change the test in nfs4_layoutget_handle_exception() to take this into account. This fixes an infinite layoutget loop in the NFS client whereby it keeps retrying the initial layoutget using the same broken stateid. Fixes: 70d2f7b1ea19b ("pNFS: Use the standard I/O stateid when...") Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
-rw-r--r--fs/nfs/nfs4proc.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 6c61e2b99635..f90090e8c959 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -8399,8 +8399,7 @@ nfs4_layoutget_handle_exception(struct rpc_task *task,
lo = NFS_I(inode)->layout;
/* If the open stateid was bad, then recover it. */
if (!lo || test_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags) ||
- nfs4_stateid_match_other(&lgp->args.stateid,
- &lgp->args.ctx->state->stateid)) {
+ !nfs4_stateid_match_other(&lgp->args.stateid, &lo->plh_stateid)) {
spin_unlock(&inode->i_lock);
exception->state = lgp->args.ctx->state;
exception->stateid = &lgp->args.stateid;