https://github.com/torvalds/linux
Revision 86d0c164272536c732853e19391de5159f860701 authored by Christophe Leroy on 15 May 2021, 00:27:39 UTC, committed by Linus Torvalds on 15 May 2021, 02:41:32 UTC
iomap_max_page_shift is expected to contain a page shift, so it can't be a
'bool', has to be an 'unsigned int'
And fix the default values: P4D_SHIFT is when huge iomap is allowed.
However, on some architectures (eg: powerpc book3s/64), P4D_SHIFT is not a
constant so it can't be used to initialise a static variable. So,
initialise iomap_max_page_shift with a maximum shift supported by the
architecture, it is gated by P4D_SHIFT in vmap_try_huge_p4d() anyway.
Link: https://lkml.kernel.org/r/ad2d366015794a9f21320dcbdd0a8eb98979e9df.1620898113.git.christophe.leroy@csgroup.eu
Fixes: bbc180a5adb0 ("mm: HUGE_VMAP arch support cleanup")
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent f4d3f25
Tip revision: 86d0c164272536c732853e19391de5159f860701 authored by Christophe Leroy on 15 May 2021, 00:27:39 UTC
mm/ioremap: fix iomap_max_page_shift
mm/ioremap: fix iomap_max_page_shift
Tip revision: 86d0c16
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| .clang-format | -rw-r--r-- | 16.4 KB |
| .cocciconfig | -rw-r--r-- | 59 bytes |
| .get_maintainer.ignore | -rw-r--r-- | 71 bytes |
| .gitattributes | -rw-r--r-- | 62 bytes |
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| COPYING | -rw-r--r-- | 496 bytes |
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| Kbuild | -rw-r--r-- | 1.3 KB |
| Kconfig | -rw-r--r-- | 555 bytes |
| MAINTAINERS | -rw-r--r-- | 587.9 KB |
| Makefile | -rw-r--r-- | 64.2 KB |
| README | -rw-r--r-- | 727 bytes |
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