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| author | Chuck Lever <chuck.lever@oracle.com> | 2019-02-11 11:24:26 -0500 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2019-02-13 12:03:21 -0500 |
| commit | f23f658404229278af49284871518174ebbe3580 (patch) | |
| tree | aafee5858f6d88e31ef650bfbce2defb099dd7e2 /fs/nfs/nfs2xdr.c | |
| parent | eb72f484a5eb94c53a241e6a7811270fb25200ad (diff) | |
| download | lwn-f23f658404229278af49284871518174ebbe3580.tar.gz lwn-f23f658404229278af49284871518174ebbe3580.zip | |
NFS: Add trace events to report non-zero NFS status codes
These can help field troubleshooting without needing the overhead
of a full network capture (ie, tcpdump).
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'fs/nfs/nfs2xdr.c')
| -rw-r--r-- | fs/nfs/nfs2xdr.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/nfs/nfs2xdr.c b/fs/nfs/nfs2xdr.c index 76614311f957..bac3a4e2cb5d 100644 --- a/fs/nfs/nfs2xdr.c +++ b/fs/nfs/nfs2xdr.c @@ -22,6 +22,7 @@ #include <linux/nfs.h> #include <linux/nfs2.h> #include <linux/nfs_fs.h> +#include "nfstrace.h" #include "internal.h" #define NFSDBG_FACILITY NFSDBG_XDR @@ -145,7 +146,13 @@ static int decode_stat(struct xdr_stream *xdr, enum nfs_stat *status) p = xdr_inline_decode(xdr, 4); if (unlikely(!p)) return -EIO; + if (unlikely(*p != cpu_to_be32(NFS_OK))) + goto out_status; + *status = 0; + return 0; +out_status: *status = be32_to_cpup(p); + trace_nfs_xdr_status((int)*status); return 0; } |