On Tue, May 24, 2016 at 02:52:19PM -0600, Ross Zwisler wrote: > Hi Linus, please pull from > > git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm > tags/dax-locking-for-4.7 > > ... to receive filesystem DAX locking changes for v4.7. > > These current version of these changes have been under review and test for a > few weeks, and have appeared in the two most recent linux-next releases > (next-20160520 and next-20160524). I've reviewed all of the DAX changes in > these patches, and Neil Brown has reviewed the patch that introduced the > actual > locking and wait queues. > > This pull request is dependent on Vishal Verma's "dax-misc for 4.7" pull > request. > > The following changes since commit 40543f62cbdce42633e3fe10923099feee272e1f: > > dax: fix a comment in dax_zero_page_range and dax_truncate_page (2016-05-18 > 12:16:58 -0600) > > are available in the git repository at: > > git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm > tags/dax-locking-for-4.7 > > for you to fetch changes up to 4d9a2c8746671efbb0c27d3ae28c7474597a7aad: > > dax: Remove i_mmap_lock protection (2016-05-19 15:28:40 -0600) > > ---------------------------------------------------------------- > Filesystem DAX locking for 4.7 > > - We use a bit in an exceptional radix tree entry as a lock bit and use it > similarly to how page lock is used for normal faults. This fixes races > between hole instantiation and read faults of the same index. > > - Filesystem DAX PMD faults are disabled, and will be re-enabled when PMD > locking is implemented. > > ----------------------------------------------------------------
Hi Linus, Both this pull request, and mine ([GIT PULL] dax-misc for 4.7) have minor merge conflicts with your tree. These were caught by linux-next too (in addition to the one I mentioned in my pull request), but I neglected to mention this one [1]. [1] https://lkml.org/lkml/2016/5/19/707 I've updated the branch at: git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm libnvdimm-for-4.7-merge with the expected resolution of merging both dax-misc-for-4.7 and dax-locking-for-4.7 Let me know if you run into something odd, and apologies for not giving an earlier heads up about the conflict. -Vishal > Jan Kara (7): > dax: Fix condition for filling of PMD holes > dax: Make huge page handling depend of CONFIG_BROKEN > dax: Define DAX lock bit for radix tree exceptional entry > dax: Allow DAX code to replace exceptional entries > dax: New fault locking > dax: Use radix tree entry lock to protect cow faults > dax: Remove i_mmap_lock protection > > fs/Kconfig | 1 + > fs/dax.c | 592 > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-------------------------- > include/linux/dax.h | 16 ++- > include/linux/mm.h | 7 ++ > mm/filemap.c | 30 +++-- > mm/memory.c | 40 +++---- > mm/truncate.c | 62 +++++----- > 7 files changed, 513 insertions(+), 235 deletions(-) > > _______________________________________________ > Linux-nvdimm mailing list > linux-nvd...@lists.01.org > https://lists.01.org/mailman/listinfo/linux-nvdimm
