The patch titled Subject: mm/hmm: move pmd_to_hmm_pfn_flags() to the respective #ifdeffery has been added to the -mm mm-new branch. Its filename is mm-hmm-move-pmd_to_hmm_pfn_flags-to-the-respective-ifdeffery.patch
This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches...
This patch will later appear in the mm-new branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------ From: Andy Shevchenko andriy.shevchenko@linux.intel.com Subject: mm/hmm: move pmd_to_hmm_pfn_flags() to the respective #ifdeffery Date: Thu, 10 Jul 2025 11:23:53 +0300
When pmd_to_hmm_pfn_flags() is unused, it prevents kernel builds with clang, `make W=1` and CONFIG_TRANSPARENT_HUGEPAGE=n:
mm/hmm.c:186:29: warning: unused function 'pmd_to_hmm_pfn_flags' [-Wunused-function]
Fix this by moving the function to the respective existing ifdeffery for its the only user.
See also:
6863f5643dd7 ("kbuild: allow Clang to find unused static inline functions for W=1 build")
Link: https://lkml.kernel.org/r/20250710082403.664093-1-andriy.shevchenko@linux.in... Fixes: 9d3973d60f0a ("mm/hmm: cleanup the hmm_vma_handle_pmd stub") Signed-off-by: Andy Shevchenko andriy.shevchenko@linux.intel.com Reviewed-by: Leon Romanovsky leonro@nvidia.com Cc: Andriy Shevchenko andriy.shevchenko@linux.intel.com Cc: Bill Wendling morbo@google.com Cc: Jerome Glisse jglisse@redhat.com Cc: Justin Stitt justinstitt@google.com Cc: Nathan Chancellor nathan@kernel.org Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org ---
mm/hmm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/hmm.c~mm-hmm-move-pmd_to_hmm_pfn_flags-to-the-respective-ifdeffery +++ a/mm/hmm.c @@ -183,6 +183,7 @@ static inline unsigned long hmm_pfn_flag return order << HMM_PFN_ORDER_SHIFT; }
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE static inline unsigned long pmd_to_hmm_pfn_flags(struct hmm_range *range, pmd_t pmd) { @@ -193,7 +194,6 @@ static inline unsigned long pmd_to_hmm_p hmm_pfn_flags_order(PMD_SHIFT - PAGE_SHIFT); }
-#ifdef CONFIG_TRANSPARENT_HUGEPAGE static int hmm_vma_handle_pmd(struct mm_walk *walk, unsigned long addr, unsigned long end, unsigned long hmm_pfns[], pmd_t pmd) _
Patches currently in -mm which might be from andriy.shevchenko@linux.intel.com are
mm-hmm-move-pmd_to_hmm_pfn_flags-to-the-respective-ifdeffery.patch panic-add-panic_sys_info-sysctl-to-take-human-readable-string-parameter-fix.patch