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| author |   Hugh Dickins <hugh@veritas.com> | 2006-02-01 03:05:31 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2006-02-01 08:53:15 -0800 |
| commit | 4e6a510a74145585f4111d60d1b5fd450d795dd8 (patch) | |
| tree | ff1cb5ba871d6c3f1b90276b865853e20cddefff /include/linux | |
| parent | [PATCH] Use 32 bit division in slab_put_obj() (diff) | |
| download | linux-dev-4e6a510a74145585f4111d60d1b5fd450d795dd8.tar.xz linux-dev-4e6a510a74145585f4111d60d1b5fd450d795dd8.zip | |
[PATCH] mm: hugepage accounting fix
2.6.15's hugepage faulting introduced huge_pages_needed accounting into
hugetlbfs: to count how many pages are already in cache, for spot check on
how far a new mapping may be allowed to extend the file. But it's muddled:
each hugepage found covers HPAGE_SIZE, not PAGE_SIZE. Once pages were
already in cache, it would overshoot, wrap its hugepages count backwards,
and so fail a harmless repeat mapping with -ENOMEM. Fixes the problem
found by Don Dupuis.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Acked-By: Adam Litke <agl@us.ibm.com>
Acked-by: William Irwin <wli@holomorphy.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux')
0 files changed, 0 insertions, 0 deletions