Re: [PATCH v4 RESEND 0/2] Align mmap address for DAX pmd mappings
From: Kirill A. Shutemov <hidden>
Date: 2016-09-09 12:36:08
Also in:
linux-fsdevel, lkml, nvdimm
On Thu, Sep 08, 2016 at 11:21:46PM +0000, Kani, Toshimitsu wrote:
On Thu, 2016-09-08 at 07:48 -0600, Kani, Toshimitsu wrote:quoted
On Thu, 2016-09-08 at 13:57 +0300, Kirill A. Shutemov wrote:quoted
On Mon, Aug 29, 2016 at 10:00:43PM +0000, Kani, Toshimitsu wrote::quoted
quoted
quoted
Looking further, these shmem_huge handlings only check pre- conditions. So, we should be able to make shmem_get_unmapped_are a() as a wrapper, which checks such shmem-specific conitions, and then call __thp_get_unmapped_area() for the actual work. All DAX-specific checks are performed in thp_get_unmapped_area() as well. We can make __thp_get_unmapped_area() as a common function. I'd prefer to make such change as a separate item,Do you have plan to submit such change?Yes, I will submit the change once I finish testing.I found a bug in the current code, and need some clarification. The if-statement below is reverted.
<two-hands-facepalm> Yeah. It was repored by Hillf[1]. The fixup got lost. :( Could you post a proper patch with the fix? I would be nice to credit Hillf there too. [1] http://lkml.kernel.org/r/054f01d1c86f$2994d5c0$7cbe8140$@alibaba-inc.com -- Kirill A. Shutemov -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>