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author | Shaohua Li <shaohua.li@intel.com> | 2012-01-12 17:19:16 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-01-12 20:13:08 -0800 |
commit | f21760b15dcd091e5afd38d0b97197b45f7ef2ea (patch) | |
tree | 84dd0f9016b46630d6b67e48ff0382b78a1bc519 /mm/debug-pagealloc.c | |
parent | e5591307f0c1eb733d280a0b72473e01d7f88530 (diff) | |
download | linux-f21760b15dcd091e5afd38d0b97197b45f7ef2ea.tar.bz2 |
thp: add tlb_remove_pmd_tlb_entry
We have tlb_remove_tlb_entry to indicate a pte tlb flush entry should be
flushed, but not a corresponding API for pmd entry. This isn't a
problem so far because THP is only for x86 currently and tlb_flush()
under x86 will flush entire TLB. But this is confusion and could be
missed if thp is ported to other arch.
Also convert tlb->need_flush = 1 to a VM_BUG_ON(!tlb->need_flush) in
__tlb_remove_page() as suggested by Andrea Arcangeli. The
__tlb_remove_page() function is supposed to be called after
tlb_remove_xxx_tlb_entry() and we can catch any misuse.
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Reviewed-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Johannes Weiner <jweiner@redhat.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/debug-pagealloc.c')
0 files changed, 0 insertions, 0 deletions