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| author | Chuck Lever <chuck.lever@oracle.com> | 2020-05-13 00:14:05 +0300 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2020-06-11 20:33:48 +0300 |
| commit | fd2b6121415539c394f7c610da5ffa6df919db46 (patch) | |
| tree | dd9a5624886b345343acc040013dddd7047529c6 /fs/nfs/read.c | |
| parent | 5be5945864ea143fda628e8179c8474457af1f43 (diff) | |
| download | linux-fd2b6121415539c394f7c610da5ffa6df919db46.tar.xz | |
NFS: Trace short NFS READs
A short read can generate an -EIO error without there being an error
on the wire. This tracepoint acts as an eyecatcher when there is no
obvious I/O error.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'fs/nfs/read.c')
| -rw-r--r-- | fs/nfs/read.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/nfs/read.c b/fs/nfs/read.c index 13b22e898116..eb854f1f86e2 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -264,6 +264,8 @@ static void nfs_readpage_retry(struct rpc_task *task, /* This is a short read! */ nfs_inc_stats(hdr->inode, NFSIOS_SHORTREAD); + trace_nfs_readpage_short(task, hdr); + /* Has the server at least made some progress? */ if (resp->count == 0) { nfs_set_pgio_error(hdr, -EIO, argp->offset); |