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authorWeston Andros Adamson <dros@netapp.com>2013-03-01 05:30:10 +0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2013-03-01 05:41:35 +0400
commit3000512137602b84d1ad5fd89d62984993a19bb6 (patch)
treead75f7487669d2977fa1fcb0b45de533c35f29e2 /include/linux
parentedddbb1eda61753c886a3c5e159293a7b3a9e30a (diff)
downloadlinux-3000512137602b84d1ad5fd89d62984993a19bb6.tar.xz
NFSv4.1: LAYOUTGET EDELAY loops timeout to the MDS
The client will currently try LAYOUTGETs forever if a server is returning NFS4ERR_LAYOUTTRYLATER or NFS4ERR_RECALLCONFLICT - even if the client no longer needs the layout (ie process killed, unmounted). This patch uses the DS timeout value (module parameter 'dataserver_timeo' via rpc layer) to set an upper limit of how long the client tries LATOUTGETs in this situation. Once the timeout is reached, IO is redirected to the MDS. This also changes how the client checks if a layout is on the clp list to avoid a double list_add. Signed-off-by: Weston Andros Adamson <dros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/nfs_xdr.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 29adb12c7ecf..2250cab6fc4b 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -233,6 +233,7 @@ struct nfs4_layoutget_args {
struct inode *inode;
struct nfs_open_context *ctx;
nfs4_stateid stateid;
+ unsigned long timestamp;
struct nfs4_layoutdriver_data layout;
};