On Mon, Sep 26, 2016 at 07:28:08PM +0200, Gerald Schaefer wrote: > This addresses several issues with hugepages and memory offline. While > the first patch fixes a panic, and is therefore rather important, the > last patch is just a performance optimization. > > The second patch fixes a theoretical issue with reserved hugepages, > while still leaving some ugly usability issue, see description. > > Changes in v4: > - Add check for free vs. reserved hugepages > - Revalidate checks in dissolve_free_huge_page() after taking the lock > - Split up into 3 patches > > Changes in v3: > - Add Fixes: c8721bbb > - Add Cc: stable > - Elaborate on losing the gigantic page vs. failing memory offline > - Move page_count() check out of dissolve_free_huge_page() > > Changes in v2: > - Update comment in dissolve_free_huge_pages() > - Change locking in dissolve_free_huge_page() > > Gerald Schaefer (3): > mm/hugetlb: fix memory offline with hugepage size > memory block size > mm/hugetlb: check for reserved hugepages during memory offline > mm/hugetlb: improve locking in dissolve_free_huge_pages() > > include/linux/hugetlb.h | 6 +++--- > mm/hugetlb.c | 47 +++++++++++++++++++++++++++++++++++------------ > mm/memory_hotplug.c | 4 +++- > 3 files changed, 41 insertions(+), 16 deletions(-)
I'm happy with these patches fixing/improving hugetlb offline code, thank you very much, Gerald and reviewers/testers! For patchset ... Acked-by: Naoya Horiguchi <n-horigu...@ah.jp.nec.com>
