diff options
| author | Gerald Schaefer | 2008-08-12 15:08:38 -0700 |
|---|---|---|
| committer | Linus Torvalds | 2008-08-12 16:07:27 -0700 |
| commit | caff3a2c333e11a794308bd9a875a09b94fee24a (patch) | |
| tree | 3cc787b8b61913bc6b93b28eafd963f786d96b53 /kernel/sys.c | |
| parent | 02eb7eeb8990b9cbd32c7bc1ef2d431ca390e44a (diff) | |
hugetlb: call arch_prepare_hugepage() for surplus pages
The s390 software large page emulation implements shared page tables by
using page->index of the first tail page from a compound large page to
store page table information. This is set up in arch_prepare_hugepage(),
which is called from alloc_fresh_huge_page_node().
A similar call to arch_prepare_hugepage() is missing for surplus large
pages that are allocated in alloc_buddy_huge_page(), which breaks the
software emulation mode for (surplus) large pages on s390. This patch
adds the missing call to arch_prepare_hugepage(). It will have no effect
on other architectures where arch_prepare_hugepage() is a nop.
Also, use the correct order in the error path in alloc_fresh_huge_page_node().
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Acked-by: Nick Piggin <npiggin@suse.de>
Acked-by: Adam Litke <agl@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/sys.c')
0 files changed, 0 insertions, 0 deletions