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Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Shuah Khan , Muhammad Usama Anjum , Andrei Vagin , Colin Ian King , linux-mm@kvack.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/2] Correct __pagemap_scan_get_categories return value Date: Thu, 6 Aug 2026 14:17:03 -0400 Message-ID: <20260806181843.1839943-2-audra@redhat.com> In-Reply-To: <20260806181843.1839943-1-audra@redhat.com> References: <7d6b4401-e230-4ca7-b64f-c1277fa643b8@kernel.org> <20260806181843.1839943-1-audra@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.111 X-Mimecast-MFC-PROC-ID: KFrTitvHH-Ng1rnfFYbleQ_DE41gGptfF4EWKDkdMX8_1786040332 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit content-type: text/plain; charset="US-ASCII"; x-default=true X-Rspamd-Server: rspam07 X-Rspam-User: X-Stat-Signature: 55fqiufsdy8j3t6qpy8thfu33rpj4z35 X-Rspamd-Queue-Id: D47B240011 X-HE-Tag: 1786040339-161169 X-HE-Meta: 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 nFHnJbIJ q5X7EHs7T19CG1HWkzRlWG72d4bBiy7JspElRMpJKd+9hF9X9WqKfzo8qDnauEVSxIox1nPjB4ZiMr/YCugYZM0gStAtMWshX9sEQ8Q7fQHxym+TCTeOq26eBHf7N7Q7d6OMVc+GHEy+ah8DceTRZ7SYkCFpv4Gu+FKeyVTUT0SIrBqnUPxUM9nnR+fBx2Y/DagRv3jROOUjdyzXWB1cAuB866i12Sd6iHFI5UdwpucFeMWhPKHg79yizlmfFM1azBY2HpcpOV55w3JXCq1gwypAms7bQEigx0p4LOreZ7GfEkJtTqpqNU0bw78JH88UkgQl6q04ttIM/k3b3OZ5tKEd0mu6UhhjITFSx/wDfHOtkYD9Z+Yv2qBnliqDqnIznCtdprOpuD79wloZmE2DoklAXz2q5/CKLDagf5FwpkIcw832VeLnTWevTSd+dMqpdfN7rAwjTWPUNnZRv6CiKclDlbA== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Currently __pagemap_scan_get_categories returns the result from the ioctl call which should be an int, not uint64_t. The ioctl may return -1 on error, which will be interpreted as UINT64_MAX. Adjust the return type to use the correct value. Fixes: 600bca580579 ("selftests/mm: check that PAGEMAP_SCAN returns correct categories") Signed-off-by: Audra Mitchell --- tools/testing/selftests/mm/vm_util.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/mm/vm_util.c b/tools/testing/selftests/mm/vm_util.c index 311fc5b4513e..6b65bd0a1e0b 100644 --- a/tools/testing/selftests/mm/vm_util.c +++ b/tools/testing/selftests/mm/vm_util.c @@ -31,7 +31,7 @@ uint64_t pagemap_get_entry(int fd, char *start) return entry; } -static uint64_t __pagemap_scan_get_categories(int fd, char *start, struct page_region *r) +static int __pagemap_scan_get_categories(int fd, char *start, struct page_region *r) { struct pm_scan_arg arg; @@ -55,7 +55,7 @@ static uint64_t __pagemap_scan_get_categories(int fd, char *start, struct page_r static uint64_t pagemap_scan_get_categories(int fd, char *start) { struct page_region r; - long ret; + int ret; ret = __pagemap_scan_get_categories(fd, start, &r); if (ret < 0) -- 2.52.0