---

yaml --- r: 146067 b: refs/heads/master c: 93459c6 h: refs/heads/master i: 146065: 6d6b53b 146063: 6558792 v: v3
git-mirror · Apr 29, 2009 · 869ec0c · 869ec0c
1 parent 212f3d7
commit 869ec0c
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Showing 2 changed files with 7 additions and 3 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 5beae6efd1004b44c3e257dc96087978e4c763c1
+refs/heads/master: 93459c6cb9816c52200993d29dd18cea1daee335
diff --git a/trunk/kernel/trace/trace.c b/trunk/kernel/trace/trace.c
@@ -3508,7 +3508,7 @@ tracing_buffers_splice_read(struct file *file, loff_t *ppos,
 		.spd_release	= buffer_spd_release,
 	};
 	struct buffer_ref *ref;
-	int size, i;
+	int entries, size, i;
 	size_t ret;
 
 	if (*ppos & (PAGE_SIZE - 1)) {
@@ -3523,7 +3523,9 @@ tracing_buffers_splice_read(struct file *file, loff_t *ppos,
 		len &= PAGE_MASK;
 	}
 
-	for (i = 0; i < PIPE_BUFFERS && len; i++, len -= PAGE_SIZE) {
+	entries = ring_buffer_entries_cpu(info->tr->buffer, info->cpu);
+
+	for (i = 0; i < PIPE_BUFFERS && len && entries; i++, len -= PAGE_SIZE) {
 		struct page *page;
 		int r;
 
@@ -3564,6 +3566,8 @@ tracing_buffers_splice_read(struct file *file, loff_t *ppos,
 		spd.partial[i].private = (unsigned long)ref;
 		spd.nr_pages++;
 		*ppos += PAGE_SIZE;
+
+		entries = ring_buffer_entries_cpu(info->tr->buffer, info->cpu);
 	}
 
 	spd.nr_pages = i;