diff options
| author |   Vishal Verma <vishal.l.verma@intel.com> | 2017-05-10 15:01:30 -0600 |
|---|---|---|
| committer |   Dan Williams <dan.j.williams@intel.com> | 2017-05-10 21:46:22 -0700 |
| commit | 3ae3d67ba705c754a3c91ac009f9ce73a0e7286a (patch) | |
| tree | 0163a4ca204ab5f9601f12ee3c6fcfdb45a16459 /drivers/nvdimm/pfn_devs.c | |
| parent | x86, pmem: Fix cache flushing for iovec write < 8 bytes (diff) | |
| download | linux-dev-3ae3d67ba705c754a3c91ac009f9ce73a0e7286a.tar.xz linux-dev-3ae3d67ba705c754a3c91ac009f9ce73a0e7286a.zip | |
libnvdimm: add an atomic vs process context flag to rw_bytes
nsio_rw_bytes can clear media errors, but this cannot be done while we
are in an atomic context due to locking within ACPI. From the BTT,
->rw_bytes may be called either from atomic or process context depending
on whether the calls happen during initialization or during IO.
During init, we want to ensure error clearing happens, and the flag
marking process context allows nsio_rw_bytes to do that. When called
during IO, we're in atomic context, and error clearing can be skipped.
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/nvdimm/pfn_devs.c')
| -rw-r--r-- | drivers/nvdimm/pfn_devs.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/nvdimm/pfn_devs.c b/drivers/nvdimm/pfn_devs.c index 335c8175410b..a6c403600d19 100644 --- a/drivers/nvdimm/pfn_devs.c +++ b/drivers/nvdimm/pfn_devs.c @@ -357,7 +357,7 @@ int nd_pfn_validate(struct nd_pfn *nd_pfn, const char *sig) if (!is_nd_pmem(nd_pfn->dev.parent)) return -ENODEV; - if (nvdimm_read_bytes(ndns, SZ_4K, pfn_sb, sizeof(*pfn_sb))) + if (nvdimm_read_bytes(ndns, SZ_4K, pfn_sb, sizeof(*pfn_sb), 0)) return -ENXIO; if (memcmp(pfn_sb->signature, sig, PFN_SIG_LEN) != 0) @@ -662,7 +662,7 @@ static int nd_pfn_init(struct nd_pfn *nd_pfn) checksum = nd_sb_checksum((struct nd_gen_sb *) pfn_sb); pfn_sb->checksum = cpu_to_le64(checksum); - return nvdimm_write_bytes(ndns, SZ_4K, pfn_sb, sizeof(*pfn_sb)); + return nvdimm_write_bytes(ndns, SZ_4K, pfn_sb, sizeof(*pfn_sb), 0); } /* |