Re: [PATCH v9 0/9] dax: fix dma vs truncate/hole-punch

2018-05-07 Thread Darrick J. Wong
On Thu, May 03, 2018 at 04:53:18PM -0700, Dan Williams wrote: > On Tue, Apr 24, 2018 at 4:33 PM, Dan Williams > wrote: > > Changes since v8 [1]: > > * Rebase on v4.17-rc2 > > > > * Fix get_user_pages_fast() for ZONE_DEVICE pages to revalidate the pte, > > pmd, pud

Re: [PATCH v9 0/9] dax: fix dma vs truncate/hole-punch

2018-05-03 Thread Dan Williams
On Tue, Apr 24, 2018 at 4:33 PM, Dan Williams wrote: > Changes since v8 [1]: > * Rebase on v4.17-rc2 > > * Fix get_user_pages_fast() for ZONE_DEVICE pages to revalidate the pte, > pmd, pud after taking references (Jan) > > * Kill dax_layout_lock(). With

[PATCH v9 0/9] dax: fix dma vs truncate/hole-punch

2018-04-24 Thread Dan Williams
Changes since v8 [1]: * Rebase on v4.17-rc2 * Fix get_user_pages_fast() for ZONE_DEVICE pages to revalidate the pte, pmd, pud after taking references (Jan) * Kill dax_layout_lock(). With get_user_pages_fast() for ZONE_DEVICE fixed we can then rely on the {pte,pmd}_lock to synchronize