kmsan: remove a useless assignment from kmsan_vmap_pages_range_noflush()
The value assigned to prot is immediately overwritten on the next line with PAGE_KERNEL. The right hand side of the assignment has no side-effects. Link: https://lkml.kernel.org/r/20240621113706.315500-8-iii@linux.ibm.com Fixes: b073d7f8aee4 ("mm: kmsan: maintain KMSAN metadata for page operations") Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Suggested-by: Alexander Gordeev <agordeev@linux.ibm.com> Reviewed-by: Alexander Potapenko <glider@google.com> Cc: Christian Borntraeger <borntraeger@linux.ibm.com> Cc: Christoph Lameter <cl@linux.com> Cc: David Rientjes <rientjes@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: <kasan-dev@googlegroups.com> Cc: Marco Elver <elver@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Masami Hiramatsu (Google) <mhiramat@kernel.org> Cc: Pekka Enberg <penberg@kernel.org> Cc: Roman Gushchin <roman.gushchin@linux.dev> Cc: Steven Rostedt (Google) <rostedt@goodmis.org> Cc: Sven Schnelle <svens@linux.ibm.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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@ -243,7 +243,6 @@ int kmsan_vmap_pages_range_noflush(unsigned long start, unsigned long end,
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s_pages[i] = shadow_page_for(pages[i]);
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o_pages[i] = origin_page_for(pages[i]);
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}
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prot = __pgprot(pgprot_val(prot) | _PAGE_NX);
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prot = PAGE_KERNEL;
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origin_start = vmalloc_meta((void *)start, KMSAN_META_ORIGIN);
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