Commit 6ed0529f authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'nfs-for-4.14-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs 

Pull more NFS client updates from Trond Myklebust:
 "Hightlights include:

  Bugfixes:
   - Various changes relating to reporting IO errors.
   - pnfs: Use the standard I/O stateid when calling LAYOUTGET

  Features:
   - Add static NFS I/O tracepoints for debugging"

* tag 'nfs-for-4.14-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  NFS: various changes relating to reporting IO errors.
  NFS: Add static NFS I/O tracepoints
  pNFS: Use the standard I/O stateid when calling LAYOUTGET
parents 9e0ce554 bf4b4905

fs/nfs/file.c

+10 −6
Original line number Diff line number Diff line
@@ -208,21 +208,19 @@ EXPORT_SYMBOL_GPL(nfs_file_mmap); 
 * fall back to doing a synchronous write.

 */

static int

nfs_file_fsync_commit(struct file *file, loff_t start, loff_t end, int datasync)

nfs_file_fsync_commit(struct file *file, int datasync)

{

	struct nfs_open_context *ctx = nfs_file_open_context(file);

	struct inode *inode = file_inode(file);

	int have_error, do_resend, status;

	int do_resend, status;

	int ret = 0;



	dprintk("NFS: fsync file(%pD2) datasync %d\n", file, datasync);



	nfs_inc_stats(inode, NFSIOS_VFSFSYNC);

	do_resend = test_and_clear_bit(NFS_CONTEXT_RESEND_WRITES, &ctx->flags);

	have_error = test_and_clear_bit(NFS_CONTEXT_ERROR_WRITE, &ctx->flags);

	status = nfs_commit_inode(inode, FLUSH_SYNC);

	have_error |= test_bit(NFS_CONTEXT_ERROR_WRITE, &ctx->flags);

	if (have_error) {

	if (test_bit(NFS_CONTEXT_ERROR_WRITE, &ctx->flags)) {

		ret = xchg(&ctx->error, 0);

		if (ret)

			goto out;
@@ -247,10 +245,16 @@ nfs_file_fsync(struct file *file, loff_t start, loff_t end, int datasync) 
	trace_nfs_fsync_enter(inode);



	do {

		struct nfs_open_context *ctx = nfs_file_open_context(file);

		ret = filemap_write_and_wait_range(inode->i_mapping, start, end);

		if (test_and_clear_bit(NFS_CONTEXT_ERROR_WRITE, &ctx->flags)) {

			int ret2 = xchg(&ctx->error, 0);

			if (ret2)

				ret = ret2;

		}

		if (ret != 0)

			break;

		ret = nfs_file_fsync_commit(file, start, end, datasync);

		ret = nfs_file_fsync_commit(file, datasync);

		if (!ret)

			ret = pnfs_sync_inode(inode, !!datasync);

		/*

fs/nfs/internal.h

+7 −0
Original line number Diff line number Diff line
@@ -768,3 +768,10 @@ static inline bool nfs_error_is_fatal(int err) 
		return false;

	}

}



static inline void nfs_context_set_write_error(struct nfs_open_context *ctx, int error)

{

	ctx->error = error;

	smp_wmb();

	set_bit(NFS_CONTEXT_ERROR_WRITE, &ctx->flags);

}

fs/nfs/nfstrace.h

+248 −0
Original line number Diff line number Diff line
@@ -719,6 +719,254 @@ TRACE_EVENT(nfs_sillyrename_unlink, 
			__get_str(name)

		)

);



TRACE_EVENT(nfs_initiate_read,

		TP_PROTO(

			const struct inode *inode,

			loff_t offset, unsigned long count

		),



		TP_ARGS(inode, offset, count),



		TP_STRUCT__entry(

			__field(loff_t, offset)

			__field(unsigned long, count)

			__field(dev_t, dev)

			__field(u32, fhandle)

			__field(u64, fileid)

		),



		TP_fast_assign(

			const struct nfs_inode *nfsi = NFS_I(inode);



			__entry->offset = offset;

			__entry->count = count;

			__entry->dev = inode->i_sb->s_dev;

			__entry->fileid = nfsi->fileid;

			__entry->fhandle = nfs_fhandle_hash(&nfsi->fh);

		),



		TP_printk(

			"fileid=%02x:%02x:%llu fhandle=0x%08x "

			"offset=%lld count=%lu",

			MAJOR(__entry->dev), MINOR(__entry->dev),

			(unsigned long long)__entry->fileid,

			__entry->fhandle,

			__entry->offset, __entry->count

		)

);



TRACE_EVENT(nfs_readpage_done,

		TP_PROTO(

			const struct inode *inode,

			int status, loff_t offset, bool eof

		),



		TP_ARGS(inode, status, offset, eof),



		TP_STRUCT__entry(

			__field(int, status)

			__field(loff_t, offset)

			__field(bool, eof)

			__field(dev_t, dev)

			__field(u32, fhandle)

			__field(u64, fileid)

		),



		TP_fast_assign(

			const struct nfs_inode *nfsi = NFS_I(inode);



			__entry->status = status;

			__entry->offset = offset;

			__entry->eof = eof;

			__entry->dev = inode->i_sb->s_dev;

			__entry->fileid = nfsi->fileid;

			__entry->fhandle = nfs_fhandle_hash(&nfsi->fh);

		),



		TP_printk(

			"fileid=%02x:%02x:%llu fhandle=0x%08x "

			"offset=%lld status=%d%s",

			MAJOR(__entry->dev), MINOR(__entry->dev),

			(unsigned long long)__entry->fileid,

			__entry->fhandle,

			__entry->offset, __entry->status,

			__entry->eof ? " eof" : ""

		)

);



/*

 * XXX: I tried using NFS_UNSTABLE and friends in this table, but they

 * all evaluate to 0 for some reason, even if I include linux/nfs.h.

 */

#define nfs_show_stable(stable) \

	__print_symbolic(stable, \

			{ 0, " (UNSTABLE)" }, \

			{ 1, " (DATA_SYNC)" }, \

			{ 2, " (FILE_SYNC)" })



TRACE_EVENT(nfs_initiate_write,

		TP_PROTO(

			const struct inode *inode,

			loff_t offset, unsigned long count,

			enum nfs3_stable_how stable

		),



		TP_ARGS(inode, offset, count, stable),



		TP_STRUCT__entry(

			__field(loff_t, offset)

			__field(unsigned long, count)

			__field(enum nfs3_stable_how, stable)

			__field(dev_t, dev)

			__field(u32, fhandle)

			__field(u64, fileid)

		),



		TP_fast_assign(

			const struct nfs_inode *nfsi = NFS_I(inode);



			__entry->offset = offset;

			__entry->count = count;

			__entry->stable = stable;

			__entry->dev = inode->i_sb->s_dev;

			__entry->fileid = nfsi->fileid;

			__entry->fhandle = nfs_fhandle_hash(&nfsi->fh);

		),



		TP_printk(

			"fileid=%02x:%02x:%llu fhandle=0x%08x "

			"offset=%lld count=%lu stable=%d%s",

			MAJOR(__entry->dev), MINOR(__entry->dev),

			(unsigned long long)__entry->fileid,

			__entry->fhandle,

			__entry->offset, __entry->count,

			__entry->stable, nfs_show_stable(__entry->stable)

		)

);



TRACE_EVENT(nfs_writeback_done,

		TP_PROTO(

			const struct inode *inode,

			int status,

			loff_t offset,

			struct nfs_writeverf *writeverf

		),



		TP_ARGS(inode, status, offset, writeverf),



		TP_STRUCT__entry(

			__field(int, status)

			__field(loff_t, offset)

			__field(enum nfs3_stable_how, stable)

			__field(unsigned long long, verifier)

			__field(dev_t, dev)

			__field(u32, fhandle)

			__field(u64, fileid)

		),



		TP_fast_assign(

			const struct nfs_inode *nfsi = NFS_I(inode);



			__entry->status = status;

			__entry->offset = offset;

			__entry->stable = writeverf->committed;

			memcpy(&__entry->verifier, &writeverf->verifier,

			       sizeof(__entry->verifier));

			__entry->dev = inode->i_sb->s_dev;

			__entry->fileid = nfsi->fileid;

			__entry->fhandle = nfs_fhandle_hash(&nfsi->fh);

		),



		TP_printk(

			"fileid=%02x:%02x:%llu fhandle=0x%08x "

			"offset=%lld status=%d stable=%d%s "

			"verifier 0x%016llx",

			MAJOR(__entry->dev), MINOR(__entry->dev),

			(unsigned long long)__entry->fileid,

			__entry->fhandle,

			__entry->offset, __entry->status,

			__entry->stable, nfs_show_stable(__entry->stable),

			__entry->verifier

		)

);



TRACE_EVENT(nfs_initiate_commit,

		TP_PROTO(

			const struct nfs_commit_data *data

		),



		TP_ARGS(data),



		TP_STRUCT__entry(

			__field(loff_t, offset)

			__field(unsigned long, count)

			__field(dev_t, dev)

			__field(u32, fhandle)

			__field(u64, fileid)

		),



		TP_fast_assign(

			const struct inode *inode = data->inode;

			const struct nfs_inode *nfsi = NFS_I(inode);



			__entry->offset = data->args.offset;

			__entry->count = data->args.count;

			__entry->dev = inode->i_sb->s_dev;

			__entry->fileid = nfsi->fileid;

			__entry->fhandle = nfs_fhandle_hash(&nfsi->fh);

		),



		TP_printk(

			"fileid=%02x:%02x:%llu fhandle=0x%08x "

			"offset=%lld count=%lu",

			MAJOR(__entry->dev), MINOR(__entry->dev),

			(unsigned long long)__entry->fileid,

			__entry->fhandle,

			__entry->offset, __entry->count

		)

);



TRACE_EVENT(nfs_commit_done,

		TP_PROTO(

			const struct nfs_commit_data *data

		),



		TP_ARGS(data),



		TP_STRUCT__entry(

			__field(int, status)

			__field(loff_t, offset)

			__field(unsigned long long, verifier)

			__field(dev_t, dev)

			__field(u32, fhandle)

			__field(u64, fileid)

		),



		TP_fast_assign(

			const struct inode *inode = data->inode;

			const struct nfs_inode *nfsi = NFS_I(inode);



			__entry->status = data->res.op_status;

			__entry->offset = data->args.offset;

			memcpy(&__entry->verifier, &data->verf.verifier,

			       sizeof(__entry->verifier));

			__entry->dev = inode->i_sb->s_dev;

			__entry->fileid = nfsi->fileid;

			__entry->fhandle = nfs_fhandle_hash(&nfsi->fh);

		),



		TP_printk(

			"fileid=%02x:%02x:%llu fhandle=0x%08x "

			"offset=%lld status=%d verifier 0x%016llx",

			MAJOR(__entry->dev), MINOR(__entry->dev),

			(unsigned long long)__entry->fileid,

			__entry->fhandle,

			__entry->offset, __entry->status,

			__entry->verifier

		)

);



#endif /* _TRACE_NFS_H */



#undef TRACE_INCLUDE_PATH

fs/nfs/pagelist.c

+2 −2
Original line number Diff line number Diff line
@@ -1170,7 +1170,7 @@ out_failed: 


		/* remember fatal errors */

		if (nfs_error_is_fatal(desc->pg_error))

			mapping_set_error(desc->pg_inode->i_mapping,

			nfs_context_set_write_error(req->wb_context,

						    desc->pg_error);



		func = desc->pg_completion_ops->error_cleanup;

fs/nfs/pnfs.c

+9 −5
Original line number Diff line number Diff line
@@ -1664,7 +1664,7 @@ pnfs_update_layout(struct inode *ino, 
		.offset = pos,

		.length = count,

	};

	unsigned pg_offset, seq;

	unsigned pg_offset;

	struct nfs_server *server = NFS_SERVER(ino);

	struct nfs_client *clp = server->nfs_client;

	struct pnfs_layout_hdr *lo = NULL;
@@ -1754,10 +1754,14 @@ lookup_again: 
		}



		first = true;

		do {

			seq = read_seqbegin(&ctx->state->seqlock);

			nfs4_stateid_copy(&stateid, &ctx->state->stateid);

		} while (read_seqretry(&ctx->state->seqlock, seq));

		if (nfs4_select_rw_stateid(ctx->state,

					iomode == IOMODE_RW ? FMODE_WRITE : FMODE_READ,

					NULL, &stateid, NULL) != 0) {

			trace_pnfs_update_layout(ino, pos, count,

					iomode, lo, lseg,

					PNFS_UPDATE_LAYOUT_INVALID_OPEN);

			goto out_unlock;

		}

	} else {

		nfs4_stateid_copy(&stateid, &lo->plh_stateid);

	}

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