The patch titled
Subject: mm: use untagged_addr() for get_user_pages_fast addresses
has been removed from the -mm tree. Its filename was
mm-use-untagged_addr-for-get_user_pages_fast-addresses.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Christoph Hellwig <hch@xxxxxx>
Subject: mm: use untagged_addr() for get_user_pages_fast addresses
Patch series "switch the remaining architectures to use generic GUP", v4.
A series to switch mips, sh and sparc64 to use the generic GUP code so
that we only have one codebase to touch for further improvements to this
code.
This patch (of 16):
This will allow sparc64, or any future architecture with memory tagging to
override its tags for get_user_pages and get_user_pages_fast.
Link: http://lkml.kernel.org/r/20190625143715.1689-2-hch@xxxxxx
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Khalid Aziz <khalid.aziz@xxxxxxxxxx>
Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
Cc: Paul Burton <paul.burton@xxxxxxxx>
Cc: James Hogan <jhogan@xxxxxxxxxx>
Cc: Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx>
Cc: Rich Felker <dalias@xxxxxxxx>
Cc: David Miller <davem@xxxxxxxxxxxxx>
Cc: Nicholas Piggin <npiggin@xxxxxxxxx>
Cc: Khalid Aziz <khalid.aziz@xxxxxxxxxx>
Cc: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/gup.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/mm/gup.c~mm-use-untagged_addr-for-get_user_pages_fast-addresses
+++ a/mm/gup.c
@@ -2146,7 +2146,7 @@ int __get_user_pages_fast(unsigned long
unsigned long flags;
int nr = 0;
- start &= PAGE_MASK;
+ start = untagged_addr(start) & PAGE_MASK;
len = (unsigned long) nr_pages << PAGE_SHIFT;
end = start + len;
@@ -2219,7 +2219,7 @@ int get_user_pages_fast(unsigned long st
unsigned long addr, len, end;
int nr = 0, ret = 0;
- start &= PAGE_MASK;
+ start = untagged_addr(start) & PAGE_MASK;
addr = start;
len = (unsigned long) nr_pages << PAGE_SHIFT;
end = start + len;
_
Patches currently in -mm which might be from hch@xxxxxx are
mm-fix-the-map_uninitialized-flag.patch
mm-provide-a-print_vma_addr-stub-for-config_mmu.patch
mm-stub-out-all-of-swapopsh-for-config_mmu.patch
