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nfs: add tracepoints to nfs_writepages()

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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>
This commit is contained in:
Jeff Layton
2025-08-08 07:40:34 -04:00
committed by Anna Schumaker
parent b6ef079fd9
commit 83c47ef8ac
2 changed files with 8 additions and 4 deletions
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2
fs/nfs/nfstrace.h
View File

@@ -1080,6 +1080,8 @@ DEFINE_NFS_FOLIO_EVENT_DONE(nfs_write_begin_done);
DEFINE_NFS_FOLIO_EVENT(nfs_write_end);
DEFINE_NFS_FOLIO_EVENT_DONE(nfs_write_end_done);
DEFINE_NFS_FOLIO_EVENT(nfs_writepages);
DEFINE_NFS_FOLIO_EVENT_DONE(nfs_writepages_done);
DECLARE_EVENT_CLASS(nfs_kiocb_event,
TP_PROTO(

10
fs/nfs/write.c
View File

@@ -657,12 +657,14 @@ int nfs_writepages(struct address_space *mapping, struct writeback_control *wbc)
int priority = 0;
int err;
trace_nfs_writepages(inode, wbc->range_start, wbc->range_end - wbc->range_start);
/* Wait with writeback until write congestion eases */
if (wbc->sync_mode == WB_SYNC_NONE && nfss->write_congested) {
err = wait_event_killable(nfss->write_congestion_wait,
nfss->write_congested == 0);
if (err)
return err;
goto out_err;
}
nfs_inc_stats(inode, NFSIOS_VFSWRITEPAGES);
@@ -693,10 +695,10 @@ int nfs_writepages(struct address_space *mapping, struct writeback_control *wbc)
} while (err < 0 && !nfs_error_is_fatal(err));
nfs_io_completion_put(ioc);
if (err < 0)
goto out_err;
return 0;
if (err > 0)
err = 0;
out_err:
trace_nfs_writepages_done(inode, wbc->range_start, wbc->range_end - wbc->range_start, err);
return err;
}