[PATCH 2/2] makedumpfile: break loop after last dumpable page

[Philipp Rudo <prudo@redhat.com>]

Once the last dumpable page was processed there is no need to finish the
loop to the last page. Thus exit early to improve performance.

Signed-off-by: Philipp Rudo <prudo@redhat.com>
---
 makedumpfile.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/makedumpfile.c b/makedumpfile.c
index 2ef3458..c944d0e 100644
--- a/makedumpfile.c
+++ b/makedumpfile.c
@@ -8884,6 +8884,12 @@ write_kdump_pages_cyclic(struct cache_data *cd_header, struct cache_data *cd_pag
 
 	for (pfn = start_pfn; pfn < end_pfn; pfn++) {
 
+		/*
+		 * All dumpable pages have been processed. No need to continue.
+		 */
+		if (num_dumped == info->num_dumpable)
+			break;
+
 		/*
 		 * Check the excluded page.
 		 */
-- 
2.35.1