This is a note to let you know that I've just added the patch titled
sunrpc: fix NFSACL RPC retry on soft mount
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
sunrpc-fix-nfsacl-rpc-retry-on-soft-mount.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 71b7eea0e77c42b723955add4a8c5dca18832491
Author: Dan Aloni <dan.aloni@xxxxxxxxxxxx>
Date: Thu Apr 25 13:49:38 2024 +0300
sunrpc: fix NFSACL RPC retry on soft mount
[ Upstream commit 0dc9f430027b8bd9073fdafdfcdeb1a073ab5594 ]
It used to be quite awhile ago since 1b63a75180c6 ('SUNRPC: Refactor
rpc_clone_client()'), in 2012, that `cl_timeout` was copied in so that
all mount parameters propagate to NFSACL clients. However since that
change, if mount options as follows are given:
soft,timeo=50,retrans=16,vers=3
The resultant NFSACL client receives:
cl_softrtry: 1
cl_timeout: to_initval=60000, to_maxval=60000, to_increment=0, to_retries=2, to_exponential=0
These values lead to NFSACL operations not being retried under the
condition of transient network outages with soft mount. Instead, getacl
call fails after 60 seconds with EIO.
The simple fix is to pass the existing client's `cl_timeout` as the new
client timeout.
Cc: Chuck Lever <chuck.lever@xxxxxxxxxx>
Cc: Benjamin Coddington <bcodding@xxxxxxxxxx>
Link: https://lore.kernel.org/all/20231105154857.ryakhmgaptq3hb6b@xxxxxxxxx/T/
Fixes: 1b63a75180c6 ('SUNRPC: Refactor rpc_clone_client()')
Signed-off-by: Dan Aloni <dan.aloni@xxxxxxxxxxxx>
Reviewed-by: Benjamin Coddington <bcodding@xxxxxxxxxx>
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index f4d32cf2cd16a..d3c917c0c8d59 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -1056,6 +1056,7 @@ struct rpc_clnt *rpc_bind_new_program(struct rpc_clnt *old,
.authflavor = old->cl_auth->au_flavor,
.cred = old->cl_cred,
.stats = old->cl_stats,
+ .timeout = old->cl_timeout,
};
struct rpc_clnt *clnt;
int err;
