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GET /api/1.1/patches/2228788/?format=api
{ "id": 2228788, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2228788/?format=api", "web_url": "http://patchwork.ozlabs.org/project/ltp/patch/20260427115941.31945-1-wegao@suse.com/", "project": { "id": 59, "url": "http://patchwork.ozlabs.org/api/1.1/projects/59/?format=api", "name": "Linux Test Project development", "link_name": "ltp", "list_id": "ltp.lists.linux.it", "list_email": "ltp@lists.linux.it", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20260427115941.31945-1-wegao@suse.com>", "date": "2026-04-27T11:59:39", "name": "[v1] mmapstress06: TCONF on systems without swap space", "commit_ref": null, "pull_url": null, "state": "needs-review-ack", "archived": false, "hash": "cc02d0226cee43cc1ef013ff5cbfec2357e42ff6", "submitter": { "id": 85577, "url": "http://patchwork.ozlabs.org/api/1.1/people/85577/?format=api", "name": "Wei Gao", "email": "wegao@suse.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/ltp/patch/20260427115941.31945-1-wegao@suse.com/mbox/", "series": [ { "id": 501633, "url": "http://patchwork.ozlabs.org/api/1.1/series/501633/?format=api", "web_url": "http://patchwork.ozlabs.org/project/ltp/list/?series=501633", "date": "2026-04-27T11:59:39", "name": "[v1] mmapstress06: TCONF on systems without swap space", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/501633/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2228788/comments/", "check": "success", "checks": "http://patchwork.ozlabs.org/api/patches/2228788/checks/", "tags": {}, "headers": { "Return-Path": "<ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "ltp@lists.linux.it" ], "Delivered-To": [ "patchwork-incoming@legolas.ozlabs.org", "ltp@picard.linux.it" ], "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=lists.linux.it header.i=@lists.linux.it\n header.a=rsa-sha256 header.s=picard header.b=p24Cizs6;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n unprotected) header.d=suse.com header.i=@suse.com header.a=rsa-sha256\n header.s=google header.b=hCkI7OSL;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.linux.it\n (client-ip=2001:1418:10:5::2; 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charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Errors-To": "ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it", "Sender": "\"ltp\" <ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it>" }, "content": "mmapstress06 is designed to stress the mfile_swap kernel primitive, which\nmanages shared anonymous memory. On architectures with large pages (like\n64KB on ppc64le), the test's hardcoded request for 32769 pages results\nin a ~2GB mapping. So in suse test system configured with 2GB of RAM and\nno swap space, the test will fails with following information:\n\nmmapstress06: errno = 12; large mmap failed\nfor this test to run, it needs a mmap space of\n32769 pages\n\nThe failure occurs because the 2GB request cannot be fulfilled within\nthe 2GB RAM limit without swap backing. Since the test specifically\nintends to exercise swap-related logic (mfile_swap), it should be skipped\nwith TCONF when the system lacks swap space.\n\nSigned-off-by: Wei Gao <wegao@suse.com>\n---\n testcases/kernel/mem/mmapstress/mmapstress06.c | 8 ++++++++\n 1 file changed, 8 insertions(+)", "diff": "diff --git a/testcases/kernel/mem/mmapstress/mmapstress06.c b/testcases/kernel/mem/mmapstress/mmapstress06.c\nindex 37b7edc84..54b5febbf 100644\n--- a/testcases/kernel/mem/mmapstress/mmapstress06.c\n+++ b/testcases/kernel/mem/mmapstress/mmapstress06.c\n@@ -51,6 +51,8 @@ void ok_exit();\n \n #define ANON_GRAN_PAGES_MAX\t(32U)\n \n+#include \"tst_memutils.h\"\n+\n extern time_t time(time_t *);\n extern char *ctime(const time_t *);\n extern int atoi(const char *);\n@@ -74,6 +76,12 @@ int main(int argc, char *argv[])\n \t\t(void)fprintf(stderr, \"usage: %s sleep_time\\n\", argv[0]);\n \t\tanyfail();\n \t}\n+\n+\tif (tst_available_swap() <= 0) {\n+\t\ttst_resm(TCONF, \"Test requires swap space to exercise mfile_swap logic\");\n+\t\ttst_exit();\n+\t}\n+\n \t(void)time(&t);\n // (void)printf(\"%s: Started %s\", argv[0], ctime(&t)); LTP Port\n \tif (sbrk(pagesize - ((ulong) sbrk(0) & (pagesize - 1))) == (char *)-1) {\n", "prefixes": [ "v1" ] }