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From: Andrew Morton <akpm@linux-foundation.org>
To: akpm@linux-foundation.org, david@redhat.com,
	kirill.shutemov@linux.intel.com, linux-mm@kvack.org,
	mike.kravetz@oracle.com, mm-commits@vger.kernel.org,
	torvalds@linux-foundation.org, william.kucharski@oracle.com,
	willy@infradead.org, ziy@nvidia.com
Subject: [patch 13/39] mm: introduce offset_in_thp
Date: Fri, 14 Aug 2020 17:30:43 -0700	[thread overview]
Message-ID: <20200815003043.SkWT1tEoI%akpm@linux-foundation.org> (raw)
In-Reply-To: <20200814172939.55d6d80b6e21e4241f1ee1f3@linux-foundation.org>

From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Subject: mm: introduce offset_in_thp

Mirroring offset_in_page(), this gives you the offset within this
particular page, no matter what size page it is.  It optimises down to
offset_in_page() if CONFIG_TRANSPARENT_HUGEPAGE is not set.

Link: http://lkml.kernel.org/r/20200629151959.15779-8-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 include/linux/mm.h |    1 +
 1 file changed, 1 insertion(+)

--- a/include/linux/mm.h~mm-introduce-offset_in_thp
+++ a/include/linux/mm.h
@@ -1594,6 +1594,7 @@ static inline void clear_page_pfmemalloc
 extern void pagefault_out_of_memory(void);
 
 #define offset_in_page(p)	((unsigned long)(p) & ~PAGE_MASK)
+#define offset_in_thp(page, p)	((unsigned long)(p) & (thp_size(page) - 1))
 
 /*
  * Flags passed to show_mem() and show_free_areas() to suppress output in
_


  parent reply	other threads:[~2020-08-15  0:30 UTC|newest]

Thread overview: 49+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-15  0:29 incoming Andrew Morton
2020-08-15  0:30 ` [patch 01/39] asm-generic: pgalloc.h: use correct #ifdef to enable pud_alloc_one() Andrew Morton
2020-08-15  0:30 ` [patch 02/39] Revert "mm/vmstat.c: do not show lowmem reserve protection information of empty zone" Andrew Morton
2020-08-15  0:30 ` [patch 03/39] lz4: fix kernel decompression speed Andrew Morton
2020-08-15  0:30 ` [patch 04/39] exec: restore EACCES of S_ISDIR execve() Andrew Morton
2020-08-15  0:30 ` [patch 05/39] selftests/exec: add file type errno tests Andrew Morton
2020-08-15  0:30 ` [patch 06/39] mailmap: add entry for Greg Kurz Andrew Morton
2020-08-15  0:30 ` [patch 07/39] mm: store compound_nr as well as compound_order Andrew Morton
2020-08-15  0:30 ` [patch 08/39] mm: move page-flags include to top of file Andrew Morton
2020-08-15  0:30 ` [patch 09/39] mm: add thp_order Andrew Morton
2020-08-15  0:30 ` [patch 10/39] mm: add thp_size Andrew Morton
2020-08-15  0:30 ` [patch 11/39] mm: replace hpage_nr_pages with thp_nr_pages Andrew Morton
2020-08-15  0:30 ` [patch 12/39] mm: add thp_head Andrew Morton
2020-08-15  0:30 ` Andrew Morton [this message]
2020-08-15  0:30 ` [patch 14/39] fs: autofs: delete repeated words in comments Andrew Morton
2020-08-15  0:30 ` [patch 15/39] mm/madvise: pass task and mm to do_madvise Andrew Morton
2020-08-15  0:30 ` [patch 16/39] pid: move pidfd_get_pid() to pid.c Andrew Morton
2020-08-15  0:30 ` [patch 17/39] mm/madvise: introduce process_madvise() syscall: an external memory hinting API Andrew Morton
2020-08-16  8:12   ` Christian Brauner
2020-08-17 15:10     ` Minchan Kim
2020-08-15  0:31 ` [patch 18/39] mm/madvise: check fatal signal pending of target process Andrew Morton
2020-08-15  2:53   ` Linus Torvalds
2020-08-15  4:59     ` Minchan Kim
2020-08-15 14:57       ` Linus Torvalds
2020-08-15 18:34         ` Minchan Kim
2020-08-16  1:43           ` Linus Torvalds
2020-08-16  5:58             ` Minchan Kim
2020-08-15  0:31 ` [patch 19/39] all arch: remove system call sys_sysctl Andrew Morton
2020-08-15  0:31 ` [patch 20/39] mm/kmemleak: silence KCSAN splats in checksum Andrew Morton
2020-08-15  0:31 ` [patch 21/39] mm/frontswap: mark various intentional data races Andrew Morton
2020-08-15  0:31 ` [patch 22/39] mm/page_io: " Andrew Morton
2020-08-15  0:31 ` [patch 23/39] mm/swap_state: " Andrew Morton
2020-08-15  0:31 ` [patch 24/39] mm/filemap.c: fix a data race in filemap_fault() Andrew Morton
2020-08-15  0:31 ` [patch 25/39] mm/swapfile: fix and annotate various data races Andrew Morton
2020-08-15  0:31 ` [patch 26/39] mm/page_counter: fix various data races at memsw Andrew Morton
2020-08-15  0:31 ` [patch 27/39] mm/memcontrol: fix a data race in scan count Andrew Morton
2020-08-15  0:31 ` [patch 28/39] mm/list_lru: fix a data race in list_lru_count_one Andrew Morton
2020-08-15  0:31 ` [patch 29/39] mm/mempool: fix a data race in mempool_free() Andrew Morton
2020-08-15  0:31 ` [patch 30/39] mm/rmap: annotate a data race at tlb_flush_batched Andrew Morton
2020-08-15  0:31 ` [patch 31/39] mm/swap.c: annotate data races for lru_rotate_pvecs Andrew Morton
2020-08-15  0:31 ` [patch 32/39] mm: annotate a data race in page_zonenum() Andrew Morton
2020-08-15  0:31 ` [patch 33/39] include/asm-generic/vmlinux.lds.h: align ro_after_init Andrew Morton
2020-08-15  0:32 ` [patch 34/39] sh: clkfwk: remove r8/r16/r32 Andrew Morton
2020-08-15  0:32 ` [patch 35/39] sh: use generic strncpy() Andrew Morton
2020-08-15  0:32 ` [patch 36/39] iomap: constify ioreadX() iomem argument (as in generic implementation) Andrew Morton
2020-08-15  0:32 ` [patch 37/39] rtl818x: " Andrew Morton
2020-08-15  0:32 ` [patch 38/39] ntb: intel: " Andrew Morton
2020-08-15  0:32 ` [patch 39/39] virtio: pci: " Andrew Morton
2020-08-19 23:09 ` mmotm 2020-08-19-16-09 uploaded Andrew Morton

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