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BACKPORT: FROMGIT: mm/nommu: Fix return type of filemap_map_pages()

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If CONFIG_MMU is not set (e.g. m68k/m5272c3_defconfig):

    mm/nommu.c:1671:6: error: conflicting types for ‘filemap_map_pages’
     1671 | void filemap_map_pages(struct vm_fault *vmf,
	  |      ^~~~~~~~~~~~~~~~~
    In file included from mm/nommu.c:20:
    ./include/linux/mm.h:2578:19: note: previous declaration of ‘filemap_map_pages’ was here
     2578 | extern vm_fault_t filemap_map_pages(struct vm_fault *vmf,
	  |                   ^~~~~~~~~~~~~~~~~

The signature of filemap_map_pages() was changed, but the nommu
implementation wasn't updated.

Reported-by: noreply@ellerman.id.au
Fixes: f9ce0be71d ("mm: Cleanup faultaround and finish_fault() codepaths")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/r/20210128100626.2257638-1-geert@linux-m68k.org
Signed-off-by: Will Deacon <will@kernel.org>
Change-Id: I5ebdc18a16842bb18cde7509303b6ca15522fa91
Bug: 171278850
(cherry picked from commit 3f98a28cc3
https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git/log/?h=for-next/faultaround)
Signed-off-by: Vinayak Menon <vinmenon@codeaurora.org>
This commit is contained in:
Geert Uytterhoeven
2021-01-28 11:06:26 +01:00
committed by Will Deacon
parent ccdd6170d1
commit 7f8d15e2e7
1 changed files with 2 additions and 1 deletions
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3
mm/nommu.c
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@@ -1668,10 +1668,11 @@ vm_fault_t filemap_fault(struct vm_fault *vmf)
}
EXPORT_SYMBOL(filemap_fault);
void filemap_map_pages(struct vm_fault *vmf,
vm_fault_t filemap_map_pages(struct vm_fault *vmf,
pgoff_t start_pgoff, pgoff_t end_pgoff)
{
BUG();
return 0;
}
EXPORT_SYMBOL(filemap_map_pages);