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authorYang Shi2022-06-16 10:48:34 -0700
committerakpm2022-07-17 17:14:32 -0700
commit66137fb34a4b5e519d4e4679ae5aca9989688a94 (patch)
treea5e97169aaf59b4f1a4f650332376472d7a949c4 /drivers/rapidio/devices
parent13f9e267fdbba30820ce3999338b7d8fe7d6bf77 (diff)
mm: khugepaged: check THP flag in hugepage_vma_check()
Patch series "Cleanup transhuge_xxx helpers", v5. This series is the follow-up of the discussion about cleaning up transhuge_xxx helpers at https://lore.kernel.org/linux-mm/627a71f8-e879-69a5-ceb3-fc8d29d2f7f1@suse.cz/. THP has a bunch of helpers that do VMA sanity check for different paths, they do the similar checks for the most callsites and have a lot duplicate codes. And it is confusing what helpers should be used at what conditions. This series reorganized and cleaned up the code so that we could consolidate all the checks into hugepage_vma_check(). The transhuge_vma_enabled(), transparent_hugepage_active() and __transparent_hugepage_enabled() are killed by this series. This patch (of 7): Currently the THP flag check in hugepage_vma_check() will fallthrough if the flag is NEVER and VM_HUGEPAGE is set. This is not a problem for now since all the callers have the flag checked before or can't be invoked if the flag is NEVER. However, the following patch will call hugepage_vma_check() in more places, for example, page fault, so this flag must be checked in hugepge_vma_check(). Link: https://lkml.kernel.org/r/20220616174840.1202070-1-shy828301@gmail.com Link: https://lkml.kernel.org/r/20220616174840.1202070-2-shy828301@gmail.com Signed-off-by: Yang Shi <shy828301@gmail.com> Reviewed-by: Zach O'Keefe <zokeefe@google.com> Reviewed-by: Miaohe Lin <linmiaohe@huawei.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Miaohe Lin <linmiaohe@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'drivers/rapidio/devices')
0 files changed, 0 insertions, 0 deletions