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| author | Pankaj Gupta <pagupta@redhat.com> | 2019-07-05 19:33:22 +0530 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2019-07-05 15:19:10 -0700 |
| commit | c5d4355d10d414a96ca870b731756b89d068d57a (patch) | |
| tree | 9796dcbf336da17f018db742bd0f7e33ada85b2c /drivers/nvdimm/claim.c | |
| parent | db5d00c93edc0afba1027e51ff3b38dc0e5f7728 (diff) | |
| download | linux-c5d4355d10d414a96ca870b731756b89d068d57a.tar.gz linux-c5d4355d10d414a96ca870b731756b89d068d57a.tar.bz2 linux-c5d4355d10d414a96ca870b731756b89d068d57a.zip | |
libnvdimm: nd_region flush callback support
This patch adds functionality to perform flush from guest
to host over VIRTIO. We are registering a callback based
on 'nd_region' type. virtio_pmem driver requires this special
flush function. For rest of the region types we are registering
existing flush function. Report error returned by host fsync
failure to userspace.
Signed-off-by: Pankaj Gupta <pagupta@redhat.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/nvdimm/claim.c')
| -rw-r--r-- | drivers/nvdimm/claim.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/nvdimm/claim.c b/drivers/nvdimm/claim.c index 26c1c7618891..2985ca949912 100644 --- a/drivers/nvdimm/claim.c +++ b/drivers/nvdimm/claim.c @@ -255,7 +255,7 @@ static int nsio_rw_bytes(struct nd_namespace_common *ndns, struct nd_namespace_io *nsio = to_nd_namespace_io(&ndns->dev); unsigned int sz_align = ALIGN(size + (offset & (512 - 1)), 512); sector_t sector = offset >> 9; - int rc = 0; + int rc = 0, ret = 0; if (unlikely(!size)) return 0; @@ -293,7 +293,9 @@ static int nsio_rw_bytes(struct nd_namespace_common *ndns, } memcpy_flushcache(nsio->addr + offset, buf, size); - nvdimm_flush(to_nd_region(ndns->dev.parent)); + ret = nvdimm_flush(to_nd_region(ndns->dev.parent), NULL); + if (ret) + rc = ret; return rc; } |