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4866920b93
linux/mm
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David Gibson 4866920b93 [PATCH] hugepage: Fix hugepage logic in free_pgtables() harder 
Turns out the hugepage logic in free_pgtables() was doubly broken.  The
loop coalescing multiple normal page VMAs into one call to free_pgd_range()
had an off by one error, which could mean it would coalesce one hugepage
VMA into the same bundle (checking 'vma' not 'next' in the loop).  I
transferred this bug into the new is_vm_hugetlb_page() based version.
Here's the fix.

This one didn't bite on powerpc previously for the same reason the
is_hugepage_only_range() problem didn't: powerpc's hugetlb_free_pgd_range()
is identical to free_pgd_range().  It didn't bite on ia64 because the
hugepage region is distant enough from any other region that the separated
PMD_SIZE distance test would always prevent coalescing the two together.

No libhugetlbfs testsuite regressions (ppc64, POWER5).

Signed-off-by: David Gibson <dwg@au1.ibm.com>
Cc: William Lee Irwin III <wli@holomorphy.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-22 07:54:04 -08:00
..
bootmem.c [PATCH] FRV: Clean up bootmem allocator's page freeing algorithm 2006-01-06 08:33:26 -08:00
fadvise.c [PATCH] fadvise: return ESPIPE on FIFO/pipe 2006-01-08 20:14:00 -08:00
filemap_xip.c [PATCH] replace inode_update_time with file_update_time 2006-01-10 08:01:30 -08:00
filemap.c [PATCH] mm: make __put_page internal 2006-03-22 07:54:01 -08:00
filemap.h [PATCH] xip: reduce code duplication 2005-06-24 00:06:41 -07:00
fremap.c VM: add common helper function to create the page tables 2005-11-29 14:03:14 -08:00
highmem.c [PATCH] gfp_t: the rest 2005-10-28 08:16:51 -07:00
hugetlb.c [PATCH] hugepage: Make {alloc,free}_huge_page() local 2006-03-22 07:54:03 -08:00
internal.h [PATCH] remove set_page_count() outside mm/ 2006-03-22 07:54:02 -08:00
Kconfig [PATCH] Swap Migration V5: Add CONFIG_MIGRATION for page migration support 2006-01-08 20:12:41 -08:00
madvise.c [PATCH] madvise MADV_DONTFORK/MADV_DOFORK 2006-02-14 16:09:34 -08:00
Makefile [PATCH] slob: introduce the SLOB allocator 2006-01-08 20:13:41 -08:00
memory_hotplug.c [PATCH] memory hotadd: pgdat->node_present_pages fix 2006-03-09 19:47:38 -08:00
memory.c [PATCH] hugepage: Fix hugepage logic in free_pgtables() harder 2006-03-22 07:54:04 -08:00
mempolicy.c [PATCH] mm: kill kmem_cache_t usage 2006-03-22 07:53:58 -08:00
mempool.c [PATCH] mm: kill kmem_cache_t usage 2006-03-22 07:53:58 -08:00
mincore.c [PATCH] freepgt: sys_mincore ignore FIRST_USER_PGD_NR 2005-04-19 13:29:20 -07:00
mlock.c [PATCH] move capable() to capability.h 2006-01-11 18:42:13 -08:00
mmap.c [PATCH] remove VM_DONTCOPY bogosities 2006-03-22 07:54:01 -08:00
mprotect.c [PATCH] Enable mprotect on huge pages 2006-03-22 07:54:03 -08:00
mremap.c [PATCH] move capable() to capability.h 2006-01-11 18:42:13 -08:00
msync.c [PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem 2006-01-09 15:59:24 -08:00
nommu.c [PATCH] mm: nommu use compound pages 2006-03-22 07:54:01 -08:00
oom_kill.c [PATCH] out_of_memory() locking fix 2006-03-02 08:33:07 -08:00
page_alloc.c [PATCH] mm: prep_zero_page() in irq is a bug 2006-03-22 07:54:02 -08:00
page_io.c [PATCH] mm: split page table lock 2005-10-29 21:40:42 -07:00
page-writeback.c [PATCH] mm: dirty_exceeded speedup 2006-01-18 19:20:17 -08:00
pdflush.c [PATCH] Swap Migration V5: PF_SWAPWRITE to allow writing to swap 2006-01-08 20:12:41 -08:00
prio_tree.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
readahead.c [PATCH] readahead: fix initial window size calculation 2006-03-22 07:54:03 -08:00
rmap.c [PATCH] mm: more CONFIG_DEBUG_VM 2006-03-22 07:54:02 -08:00
shmem.c [PATCH] shmem: inline to avoid warning 2006-03-22 07:54:02 -08:00
slab.c [PATCH] mm: nommu use compound pages 2006-03-22 07:54:01 -08:00
slob.c [PATCH] SLOB=y && SMP=y fix 2006-02-08 07:52:58 -08:00
sparse.c [PATCH] Change maxaligned_in_smp alignemnt macros to internodealigned_in_smp macros 2006-01-08 20:13:38 -08:00
swap_state.c [PATCH] Direct Migration V9: Avoid writeback / page_migrate() method 2006-02-01 08:53:17 -08:00
swap.c [PATCH] mm: less atomic ops 2006-03-22 07:53:57 -08:00
swapfile.c [PATCH] Direct Migration V9: remove_from_swap() to remove swap ptes 2006-02-01 08:53:16 -08:00
thrash.c [PATCH] temporarily disable swap token on memory pressure 2005-11-28 14:42:25 -08:00
tiny-shmem.c [PATCH] do_truncate() call fix in tiny-shmem.c 2006-01-12 09:08:49 -08:00
truncate.c [PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem 2006-01-09 15:59:24 -08:00
util.c [PATCH] slob: introduce mm/util.c for shared functions 2006-01-08 20:13:41 -08:00
vmalloc.c [PATCH] kernel-doc: fix warnings in vmalloc.c 2005-11-07 07:53:56 -08:00
vmscan.c [PATCH] vmscan: emove obsolete checks from shrink_list() and fix unlikely in refill_inactive_zone() 2006-03-22 07:54:02 -08:00