Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
nfs: add tracepoints to nfs_writepages()
Show the inode info and requested range.
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Anna Schumaker <anna.schumaker@oracle.com>
authored by
Jeff Layton
and committed by
Anna Schumaker
83c47ef8
b6ef079f
+8
-4
+2
fs/nfs/nfstrace.h
+2
fs/nfs/nfstrace.h
···
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1080
DEFINE_NFS_FOLIO_EVENT(nfs_write_end);
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DEFINE_NFS_FOLIO_EVENT_DONE(nfs_write_end_done);
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1083
+
DEFINE_NFS_FOLIO_EVENT(nfs_writepages);
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+
DEFINE_NFS_FOLIO_EVENT_DONE(nfs_writepages_done);
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DECLARE_EVENT_CLASS(nfs_kiocb_event,
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TP_PROTO(
+6
-4
fs/nfs/write.c
+6
-4
fs/nfs/write.c
···
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int priority = 0;
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int err;
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+
trace_nfs_writepages(inode, wbc->range_start, wbc->range_end - wbc->range_start);
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+
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/* Wait with writeback until write congestion eases */
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if (wbc->sync_mode == WB_SYNC_NONE && nfss->write_congested) {
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err = wait_event_killable(nfss->write_congestion_wait,
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nfss->write_congested == 0);
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if (err)
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-
return err;
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+
goto out_err;
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}
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nfs_inc_stats(inode, NFSIOS_VFSWRITEPAGES);
···
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} while (err < 0 && !nfs_error_is_fatal(err));
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nfs_io_completion_put(ioc);
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-
if (err < 0)
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-
goto out_err;
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-
return 0;
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+
if (err > 0)
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+
err = 0;
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out_err:
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+
trace_nfs_writepages_done(inode, wbc->range_start, wbc->range_end - wbc->range_start, err);
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return err;
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}
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