On Thu, Jun 17, 2021 at 08:01:57PM -0700, Ira Weiny wrote:
>
> > + flush_kernel_dcache_page(__page); \
>
> Is this required on 32bit systems? Why is kunmap_flush_on_unmap() not
> sufficient on 64bit systems? The normal kunmap_local() path does that.
>
> I'm sorry but I
On Thu, Jun 17, 2021 at 06:35:49PM +0800, Ming Lei wrote:
> Support bio(REQ_POLLED) polling in the following approach:
>
> 1) only support io polling on normal READ/WRITE, and other abnormal IOs
> still fallback on IRQ mode, so the target io is exactly inside the dm
> io.
>
> 2) hold one refcnt
Support bio(REQ_POLLED) polling in the following approach:
1) only support io polling on normal READ/WRITE, and other abnormal IOs
still fallback on IRQ mode, so the target io is exactly inside the dm
io.
2) hold one refcnt on io->io_count after submitting this dm bio with
REQ_POLLED
3) support
Prepare for supporting IO polling for bio based driver.
Add ->poll_bio callback so that bio driver can provide their own logic
for polling bio.
Signed-off-by: Ming Lei
---
block/blk-core.c | 18 +-
block/genhd.c | 3 +++
include/linux/blkdev.h | 2 ++
3 files
There has been 3 users, and will be more, so add one such helper.
Reviewed-by: Chaitanya Kulkarni
Reviewed-by: Jeffle Xu
Reviewed-by: Hannes Reinecke
Signed-off-by: Ming Lei
---
block/blk-core.c | 5 ++---
block/blk-sysfs.c| 4 ++--
drivers/nvme/host/core.c | 2 +-
Hello Guys,
Based on Christoph's bio based polling model[1], implement DM bio polling
with one very simple approach.
Patch 1 adds helper of blk_queue_poll().
Patch 2 adds .bio_poll() callback to block_device_operations, so bio
driver can implement its own logic for io polling.
Patch 3
remove_raw() in dm_btree_remove() may fail due to IO read error
(e.g. read the content of origin block fails during shadowing),
and the value of shadow_spine::root is uninitialized, but
the uninitialized value is still assign to new_root in the
end of dm_btree_remove().
For dm-thin, the value of
> -Original Message-
> From: Dan Williams
> Subject: Re: [PATCH v4 03/10] fs: Introduce ->corrupted_range() for superblock
>
> [ drop old linux-nvd...@lists.01.org, add nvd...@lists.linux.dev ]
>
> On Thu, Jun 3, 2021 at 6:19 PM Shiyang Ruan wrote:
> >
> > Memory failure occurs in
On Wed, Jun 16, 2021 at 11:51 PM ruansy.f...@fujitsu.com
wrote:
>
> > -Original Message-
> > From: Dan Williams
> > Subject: Re: [PATCH v4 03/10] fs: Introduce ->corrupted_range() for
> > superblock
> >
> > [ drop old linux-nvd...@lists.01.org, add nvd...@lists.linux.dev ]
> >
> > On
