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authorDavid S. Miller <davem@sunset.davemloft.net>2006-03-27 04:07:55 -0500
committerDavid S. Miller <davem@sunset.davemloft.net>2006-03-27 04:07:55 -0500
commit7bebd83dbf096d0bf4b4bfbaf5d8844a05f5eafc (patch)
treeea583040c5d9fbd8d72e7b9bfa831c9f7b553a5e /arch/sparc64
parent5d5d7727a8cde78f798ecf04bac8031eff536f9d (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')
-rw-r--r--arch/sparc64/mm/fault.c4
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