NFS: Introduce trace events triggered by page writeback errors (861e1671) · Commits · 戴 / test

fs/nfs/nfstrace.h

+45 −0

Original line number	Diff line number	Diff line
		@@ -989,6 +989,51 @@ TRACE_EVENT(nfs_writeback_done,
		)
		);

		DECLARE_EVENT_CLASS(nfs_page_error_class,
		TP_PROTO(
		const struct nfs_page *req,
		int error
		),

		TP_ARGS(req, error),

		TP_STRUCT__entry(
		__field(const void *, req)
		__field(pgoff_t, index)
		__field(unsigned int, offset)
		__field(unsigned int, pgbase)
		__field(unsigned int, bytes)
		__field(int, error)
		),

		TP_fast_assign(
		__entry->req = req;
		__entry->index = req->wb_index;
		__entry->offset = req->wb_offset;
		__entry->pgbase = req->wb_pgbase;
		__entry->bytes = req->wb_bytes;
		__entry->error = error;
		),

		TP_printk(
		"req=%p index=%lu offset=%u pgbase=%u bytes=%u error=%d",
		__entry->req, __entry->index, __entry->offset,
		__entry->pgbase, __entry->bytes, __entry->error
		)
		);

		#define DEFINE_NFS_PAGEERR_EVENT(name) \
		DEFINE_EVENT(nfs_page_error_class, name, \
		TP_PROTO( \
		const struct nfs_page *req, \
		int error \
		), \
		TP_ARGS(req, error))

		DEFINE_NFS_PAGEERR_EVENT(nfs_write_error);
		DEFINE_NFS_PAGEERR_EVENT(nfs_comp_error);
		DEFINE_NFS_PAGEERR_EVENT(nfs_commit_error);

		TRACE_EVENT(nfs_initiate_commit,
		TP_PROTO(
		const struct nfs_commit_data *data

+3 −0

Original line number	Diff line number	Diff line
		@@ -593,6 +593,7 @@ release_request:
		static void nfs_write_error(struct nfs_page *req, int error)
		{
		nfs_set_pageerror(page_file_mapping(req->wb_page));
		trace_nfs_write_error(req, error);
		nfs_mapping_set_error(req->wb_page, error);
		nfs_inode_remove_request(req);
		nfs_end_page_writeback(req);
		@@ -999,6 +1000,7 @@ static void nfs_write_completion(struct nfs_pgio_header *hdr)
		if (test_bit(NFS_IOHDR_ERROR, &hdr->flags) &&
		(hdr->good_bytes < bytes)) {
		nfs_set_pageerror(page_file_mapping(req->wb_page));
		trace_nfs_comp_error(req, hdr->error);
		nfs_mapping_set_error(req->wb_page, hdr->error);
		goto remove_req;
		}
		@@ -1847,6 +1849,7 @@ static void nfs_commit_release_pages(struct nfs_commit_data *data)
		(long long)req_offset(req));
		if (status < 0) {
		if (req->wb_page) {
		trace_nfs_commit_error(req, status);
		nfs_mapping_set_error(req->wb_page, status);
		nfs_inode_remove_request(req);
		}