From d9615d166c7ede67bf16bdd0772e35e124f305f5 Mon Sep 17 00:00:00 2001 From: Benjamin Coddington Date: Thu, 15 Jun 2023 14:07:30 -0400 Subject: NFS: add sysfs shutdown knob Within each nfs_server sysfs tree, add an entry named "shutdown". Writing 1 to this file will set the cl_shutdown bit on the rpc_clnt structs associated with that mount. If cl_shutdown is set, the task scheduler immediately returns -EIO for new tasks. Signed-off-by: Benjamin Coddington Signed-off-by: Trond Myklebust --- include/linux/nfs_fs_sb.h | 1 + include/linux/sunrpc/clnt.h | 3 ++- 2 files changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index 4bed0b6c79c7..20eeba8b009d 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -154,6 +154,7 @@ struct nfs_server { #define NFS_MOUNT_WRITE_EAGER 0x01000000 #define NFS_MOUNT_WRITE_WAIT 0x02000000 #define NFS_MOUNT_TRUNK_DISCOVERY 0x04000000 +#define NFS_MOUNT_SHUTDOWN 0x08000000 unsigned int fattr_valid; /* Valid attributes */ unsigned int caps; /* server capabilities */ diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h index 88cdf6e3012a..4f41d839face 100644 --- a/include/linux/sunrpc/clnt.h +++ b/include/linux/sunrpc/clnt.h @@ -63,7 +63,8 @@ struct rpc_clnt { cl_discrtry : 1,/* disconnect before retry */ cl_noretranstimeo: 1,/* No retransmit timeouts */ cl_autobind : 1,/* use getport() */ - cl_chatty : 1;/* be verbose */ + cl_chatty : 1,/* be verbose */ + cl_shutdown : 1;/* rpc immediate -EIO */ struct xprtsec_parms cl_xprtsec; /* transport security policy */ struct rpc_rtt * cl_rtt; /* RTO estimator data */ -- cgit v1.2.3