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| author | Chuck Lever <chuck.lever@oracle.com> | 2018-03-28 13:29:11 -0400 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2018-04-03 15:08:15 -0400 |
| commit | 87c5942e8fae81ac296267654a047eb2db81592b (patch) | |
| tree | de00193297b93692cfc86f475fe7cb6d6dbdc56a /fs/nfsd/nfs4proc.c | |
| parent | d890be159a71395bd4ceca09233a8a56d7da69ee (diff) | |
| download | linux-87c5942e8fae81ac296267654a047eb2db81592b.tar.bz2 | |
nfsd: Add I/O trace points in the NFSv4 read proc
NFSv4 read compound processing invokes nfsd_splice_read and
nfs_readv directly, so the trace points currently in nfsd_read are
not invoked for NFSv4 reads.
Move the NFSD READ trace points to common helpers so that NFSv4
reads are captured.
Also, record any local I/O error that occurs, the total count of
bytes that were actually returned, and whether splice or vectored
read was used.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd/nfs4proc.c')
| -rw-r--r-- | fs/nfsd/nfs4proc.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index b773b314f599..250e0c550fd8 100644 --- a/fs/nfsd/nfs4proc.c +++ b/fs/nfsd/nfs4proc.c @@ -751,6 +751,9 @@ nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, if (read->rd_offset >= OFFSET_MAX) return nfserr_inval; + trace_nfsd_read_start(rqstp, &cstate->current_fh, + read->rd_offset, read->rd_length); + /* * If we do a zero copy read, then a client will see read data * that reflects the state of the file *after* performing the @@ -783,6 +786,8 @@ nfsd4_read_release(union nfsd4_op_u *u) { if (u->read.rd_filp) fput(u->read.rd_filp); + trace_nfsd_read_done(u->read.rd_rqstp, u->read.rd_fhp, + u->read.rd_offset, u->read.rd_length); } static __be32 |