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author | David Rientjes <rientjes@google.com> | 2011-11-19 14:33:57 +0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-11-19 15:15:59 +0400 |
commit | a5c86e986f0b2fe779f13cf53ce6e9f467b03950 (patch) | |
tree | 754679947f1e0b014d90ea526eef4f89b9f2afef /MAINTAINERS | |
parent | 208f6f6068836e10d526e87fef6ca4364f4ec068 (diff) | |
download | linux-a5c86e986f0b2fe779f13cf53ce6e9f467b03950.tar.xz |
hugetlb: remove dummy definitions of HPAGE_MASK and HPAGE_SIZE
Dummy, non-zero definitions for HPAGE_MASK and HPAGE_SIZE were added in
51c6f666fceb ("mm: ZAP_BLOCK causes redundant work") to avoid a divide
by zero in generic kernel code.
That code has since been removed, but probably should never have been
added in the first place: we don't want HPAGE_SIZE to act like PAGE_SIZE
for code that is working with hugepages, for example, when the
dependency on CONFIG_HUGETLB_PAGE has not been fulfilled.
Because hugepage size can differ from architecture to architecture, each
is required to have their own definitions for both HPAGE_MASK and
HPAGE_SIZE. This is always done in arch/*/include/asm/page.h.
So, just remove the dummy and dangerous definitions since they are no
longer needed and reveals the correct dependencies. Tested on
architectures using the definitions with allyesconfig: x86 (even with
thp), hppa, mips, powerpc, s390, sh3, sh4, sparc, and sparc64, and with
defconfig on ia64.
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'MAINTAINERS')
0 files changed, 0 insertions, 0 deletions