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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2025-08-14 12:53:56 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-08-28 16:21:34 +0200 |
| commit | 69683d17f3da72e70743a1e547e18cb96ac8f2a0 (patch) | |
| tree | e7faf057990e6bf47dd8961cc52b6c7d57e0f2a6 /mm | |
| parent | 3f252a73e81aa01660cb426735eab932e6182e8d (diff) | |
| download | linux-69683d17f3da72e70743a1e547e18cb96ac8f2a0.tar.gz linux-69683d17f3da72e70743a1e547e18cb96ac8f2a0.tar.bz2 linux-69683d17f3da72e70743a1e547e18cb96ac8f2a0.zip | |
mm/hmm: move pmd_to_hmm_pfn_flags() to the respective #ifdeffery
[ Upstream commit 188cb385bbf04d486df3e52f28c47b3961f5f0c0 ]
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.intel.com
Fixes: 992de9a8b751 ("mm/hmm: allow to mirror vma of a file on a DAX backed filesystem")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Reviewed-by: Alistair Popple <apopple@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>
[ Minor context adjustment ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/hmm.c | 2 |
1 files changed, 1 insertions, 1 deletions
@@ -392,6 +392,7 @@ static int hmm_vma_walk_hole(unsigned long addr, unsigned long end, return hmm_vma_walk_hole_(addr, end, fault, write_fault, walk); } +#ifdef CONFIG_TRANSPARENT_HUGEPAGE static inline uint64_t pmd_to_hmm_pfn_flags(struct hmm_range *range, pmd_t pmd) { if (pmd_protnone(pmd)) @@ -401,7 +402,6 @@ static inline uint64_t pmd_to_hmm_pfn_flags(struct hmm_range *range, pmd_t pmd) range->flags[HMM_PFN_VALID]; } -#ifdef CONFIG_TRANSPARENT_HUGEPAGE static int hmm_vma_handle_pmd(struct mm_walk *walk, unsigned long addr, unsigned long end, uint64_t *pfns, pmd_t pmd) { |