The patch titled
Subject: selftests-mm-confirm-va-exhaustion-without-reliance-on-correctness-of-mmap-v2
has been added to the -mm mm-unstable branch. Its filename is
selftests-mm-confirm-va-exhaustion-without-reliance-on-correctness-of-mmap-v2.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selftests-mm-confirm-va-exhaustion-without-reliance-on-correctness-of-mmap-v2.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Dev Jain <dev.jain@xxxxxxx>
Subject: selftests-mm-confirm-va-exhaustion-without-reliance-on-correctness-of-mmap-v2
Date: Mon, 25 Mar 2024 09:56:53 +0530
replace SZ_1GB with MAP_CHUNK_SIZE, tidy-up
Link: https://lkml.kernel.org/r/20240325042653.867055-1-dev.jain@xxxxxxx
Signed-off-by: Dev Jain <dev.jain@xxxxxxx>
Cc: Anshuman Khandual <anshuman.khandual@xxxxxxx>
Cc: Shuah Khan <shuah@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
tools/testing/selftests/mm/virtual_address_range.c | 15 ++++-------
1 file changed, 6 insertions(+), 9 deletions(-)
--- a/tools/testing/selftests/mm/virtual_address_range.c~selftests-mm-confirm-va-exhaustion-without-reliance-on-correctness-of-mmap-v2
+++ a/tools/testing/selftests/mm/virtual_address_range.c
@@ -117,19 +117,17 @@ static int validate_complete_va_space(vo
prev_end_addr = 0;
while (fgets(line, sizeof(line), file)) {
unsigned long hop;
- int ret;
- ret = sscanf(line, "%lx-%lx %s[rwxp-]",
- &start_addr, &end_addr, prot);
- if (ret != 3)
- ksft_exit_fail_msg("sscanf failed, cannot parse\n");
+ if (sscanf(line, "%lx-%lx %s[rwxp-]",
+ &start_addr, &end_addr, prot) != 3)
+ ksft_exit_fail_msg("cannot parse /proc/self/maps\n");
/* end of userspace mappings; ignore vsyscall mapping */
if (start_addr & (1UL << 63))
return 0;
- /* /proc/self/maps must have gaps less than 1GB only */
- if (start_addr - prev_end_addr >= SZ_1GB)
+ /* /proc/self/maps must have gaps less than MAP_CHUNK_SIZE */
+ if (start_addr - prev_end_addr >= MAP_CHUNK_SIZE)
return 1;
prev_end_addr = end_addr;
@@ -149,8 +147,7 @@ static int validate_complete_va_space(vo
while (start_addr + hop < end_addr) {
if (write(fd, (void *)(start_addr + hop), 1) != 1)
return 1;
- else
- lseek(fd, 0, SEEK_SET);
+ lseek(fd, 0, SEEK_SET);
hop += MAP_CHUNK_SIZE;
}
_
Patches currently in -mm which might be from dev.jain@xxxxxxx are
selftests-mm-virtual_address_range-switch-to-ksft_exit_fail_msg.patch
selftests-mm-confirm-va-exhaustion-without-reliance-on-correctness-of-mmap.patch
selftests-mm-confirm-va-exhaustion-without-reliance-on-correctness-of-mmap-v2.patch
selftests-mm-parse-vma-range-in-one-go.patch
