This is V6 of patches. These patches are also available at.
Looks like cover letter is missing the motivation for the patchset.
Though I found it in previous posting. Its good to add it in the series
for anyone joining the discussion at later stages.
> Changes since V5:
> - Dan Williams preferred ->zero_page_range() to only accept PAGE_SIZE
> aligned request and clear poison only on page size aligned zeroing. So
> I changed it accordingly.
> - Dropped all the modifications which were required to support arbitrary
> range zeroing with-in a page.
> - This patch series also fixes the issue where "truncate -s 512 foo.txt"
> will fail if first sector of file is poisoned. Currently it succeeds
> and filesystem expectes whole of the filesystem block to be free of
> poison at the end of the operation.
> Christoph, I have dropped your Reviewed-by tag on 1-2 patches because
> these patches changed substantially. Especially signature of of
> dax zero_page_range() helper.
> Vivek Goyal (6):
> pmem: Add functions for reading/writing page to/from pmem
> dax, pmem: Add a dax operation zero_page_range
> s390,dcssblk,dax: Add dax zero_page_range operation to dcssblk driver
> dm,dax: Add dax zero_page_range operation
> dax: Use new dax zero page method for zeroing a page
> dax,iomap: Add helper dax_iomap_zero() to zero a range
> drivers/dax/super.c | 20 ++++++++
> drivers/md/dm-linear.c | 18 +++++++
> drivers/md/dm-log-writes.c | 17 ++++++
> drivers/md/dm-stripe.c | 23 +++++++++
> drivers/md/dm.c | 30 +++++++++++
> drivers/nvdimm/pmem.c | 97 ++++++++++++++++++++++-------------
> drivers/s390/block/dcssblk.c | 15 ++++++
> fs/dax.c | 59 ++++++++++-----------
> fs/iomap/buffered-io.c | 9 +---
> include/linux/dax.h | 21 +++-----
> include/linux/device-mapper.h | 3 ++
> 11 files changed, 221 insertions(+), 91 deletions(-)
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