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author | David S. Miller <davem@sunset.davemloft.net> | 2006-03-27 04:07:55 -0500 |
---|---|---|
committer | David S. Miller <davem@sunset.davemloft.net> | 2006-03-27 04:07:55 -0500 |
commit | 7bebd83dbf096d0bf4b4bfbaf5d8844a05f5eafc (patch) | |
tree | ea583040c5d9fbd8d72e7b9bfa831c9f7b553a5e /arch/sparc64/mm/fault.c | |
parent | 5d5d7727a8cde78f798ecf04bac8031eff536f9d (diff) |
[SPARC64]: Fix off-by-1 error in TSB grow check.
The worst part about this bug is what it would cause
a hugepage TSB to be allocated for every address space
since "0 >= 0".
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/mm/fault.c')
-rw-r--r-- | arch/sparc64/mm/fault.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/sparc64/mm/fault.c b/arch/sparc64/mm/fault.c index d21ff3230c02..0db2f7d9fab5 100644 --- a/arch/sparc64/mm/fault.c +++ b/arch/sparc64/mm/fault.c | |||
@@ -413,12 +413,12 @@ good_area: | |||
413 | #ifdef CONFIG_HUGETLB_PAGE | 413 | #ifdef CONFIG_HUGETLB_PAGE |
414 | mm_rss -= (mm->context.huge_pte_count * (HPAGE_SIZE / PAGE_SIZE)); | 414 | mm_rss -= (mm->context.huge_pte_count * (HPAGE_SIZE / PAGE_SIZE)); |
415 | #endif | 415 | #endif |
416 | if (unlikely(mm_rss >= | 416 | if (unlikely(mm_rss > |
417 | mm->context.tsb_block[MM_TSB_BASE].tsb_rss_limit)) | 417 | mm->context.tsb_block[MM_TSB_BASE].tsb_rss_limit)) |
418 | tsb_grow(mm, MM_TSB_BASE, mm_rss); | 418 | tsb_grow(mm, MM_TSB_BASE, mm_rss); |
419 | #ifdef CONFIG_HUGETLB_PAGE | 419 | #ifdef CONFIG_HUGETLB_PAGE |
420 | mm_rss = mm->context.huge_pte_count; | 420 | mm_rss = mm->context.huge_pte_count; |
421 | if (unlikely(mm_rss >= | 421 | if (unlikely(mm_rss > |
422 | mm->context.tsb_block[MM_TSB_HUGE].tsb_rss_limit)) | 422 | mm->context.tsb_block[MM_TSB_HUGE].tsb_rss_limit)) |
423 | tsb_grow(mm, MM_TSB_HUGE, mm_rss); | 423 | tsb_grow(mm, MM_TSB_HUGE, mm_rss); |
424 | #endif | 424 | #endif |