On Thu, 2019-06-20 at 10:27 -0700, Song Liu wrote: > This patch is (hopefully) the first step to enable THP for non-shmem > filesystems. > > This patch enables an application to put part of its text sections to > THP > via madvise, for example: > > madvise((void *)0x600000, 0x200000, MADV_HUGEPAGE); > > We tried to reuse the logic for THP on tmpfs. > > Currently, write is not supported for non-shmem THP. khugepaged will > only > process vma with VM_DENYWRITE. The next patch will handle writes, > which > would only happen when the vma with VM_DENYWRITE is unmapped. > > An EXPERIMENTAL config, READ_ONLY_THP_FOR_FS, is added to gate this > feature. > > Signed-off-by: Song Liu <songliubraving@xxxxxx> Acked-by: Rik van Riel <riel@xxxxxxxxxxx> (I suppose I should have sent this out last night, while I was posting questions about patch 6)
