The patch titled Subject: kernel/dma: remove unnecessary unmap_kernel_range has been added to the -mm tree. Its filename is kernel-dma-remove-unnecessary-unmap_kernel_range.patch This patch should soon appear at https://ozlabs.org/~akpm/mmots/broken-out/kernel-dma-remove-unnecessary-unmap_kernel_range.patch and later at https://ozlabs.org/~akpm/mmotm/broken-out/kernel-dma-remove-unnecessary-unmap_kernel_range.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Nicholas Piggin <npiggin@xxxxxxxxx> Subject: kernel/dma: remove unnecessary unmap_kernel_range vunmap will remove ptes. Link: https://lkml.kernel.org/r/20210322021806.892164-3-npiggin@xxxxxxxxx Signed-off-by: Nicholas Piggin <npiggin@xxxxxxxxx> Reviewed-by: Christoph Hellwig <hch@xxxxxx> Cc: Cédric Le Goater <clg@xxxxxxxx> Cc: Uladzislau Rezki <urezki@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- kernel/dma/remap.c | 1 - 1 file changed, 1 deletion(-) --- a/kernel/dma/remap.c~kernel-dma-remove-unnecessary-unmap_kernel_range +++ a/kernel/dma/remap.c @@ -66,6 +66,5 @@ void dma_common_free_remap(void *cpu_add return; } - unmap_kernel_range((unsigned long)cpu_addr, PAGE_ALIGN(size)); vunmap(cpu_addr); } _ Patches currently in -mm which might be from npiggin@xxxxxxxxx are arm-mm-add-missing-pud_page-define-to-2-level-page-tables.patch mm-vmalloc-fix-huge_vmap-regression-by-enabling-huge-pages-in-vmalloc_to_page.patch mm-vmalloc-fix-huge_vmap-regression-by-enabling-huge-pages-in-vmalloc_to_page-fix.patch mm-apply_to_pte_range-warn-and-fail-if-a-large-pte-is-encountered.patch mm-vmalloc-rename-vmap__range-vmap_pages__range.patch mm-ioremap-rename-ioremap__range-to-vmap__range.patch mm-huge_vmap-arch-support-cleanup.patch powerpc-inline-huge-vmap-supported-functions.patch arm64-inline-huge-vmap-supported-functions.patch x86-inline-huge-vmap-supported-functions.patch mm-vmalloc-provide-fallback-arch-huge-vmap-support-functions.patch mm-move-vmap_range-from-mm-ioremapc-to-mm-vmallocc.patch mm-vmalloc-add-vmap_range_noflush-variant.patch mm-vmalloc-hugepage-vmalloc-mappings.patch powerpc-64s-radix-enable-huge-vmalloc-mappings.patch mm-vmalloc-remove-map_kernel_range.patch kernel-dma-remove-unnecessary-unmap_kernel_range.patch powerpc-xive-remove-unnecessary-unmap_kernel_range.patch mm-vmalloc-remove-unmap_kernel_range.patch mm-vmalloc-improve-allocation-failure-error-messages.patch