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| author | Vishal Verma <vishal.l.verma@intel.com> | 2017-08-30 19:35:58 -0600 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2017-08-31 14:31:38 -0700 |
| commit | 1db1f3cea1d8886c686832d4618b346ae16c03c8 (patch) | |
| tree | ce3cec4310270efbfec5b124ff5439e62e4bf26e | |
| parent | a15797f4bef201544263ef5c264c3f48d78cc5d4 (diff) | |
| download | linux-stable-1db1f3cea1d8886c686832d4618b346ae16c03c8.tar.gz linux-stable-1db1f3cea1d8886c686832d4618b346ae16c03c8.tar.bz2 linux-stable-1db1f3cea1d8886c686832d4618b346ae16c03c8.zip | |
libnvdimm, btt: fix a missed NVDIMM_IO_ATOMIC case in the write path
The IO context conversion for rw_bytes missed a case in the BTT write
path (btt_map_write) which should've been marked as atomic.
In reality this should not cause a problem, because map writes are to
small for nsio_rw_bytes to attempt error clearing, but it should be
fixed for posterity.
Add a might_sleep() in the non-atomic section of nsio_rw_bytes so that
things like the nfit unit tests, which don't actually sleep, can catch
bugs like this.
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>
| -rw-r--r-- | drivers/nvdimm/btt.c | 3 | ||||
| -rw-r--r-- | drivers/nvdimm/claim.c | 1 |
2 files changed, 3 insertions, 1 deletions
diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c index 7ec6393b6ba1..a5e4134e1ed0 100644 --- a/drivers/nvdimm/btt.c +++ b/drivers/nvdimm/btt.c @@ -1156,7 +1156,8 @@ static int btt_write_pg(struct btt *btt, struct bio_integrity_payload *bip, if (ret) goto out_map; - ret = btt_map_write(arena, premap, new_postmap, 0, 0, 0); + ret = btt_map_write(arena, premap, new_postmap, 0, 0, + NVDIMM_IO_ATOMIC); if (ret) goto out_map; diff --git a/drivers/nvdimm/claim.c b/drivers/nvdimm/claim.c index 47770460f3d3..3e6404f1ba5a 100644 --- a/drivers/nvdimm/claim.c +++ b/drivers/nvdimm/claim.c @@ -292,6 +292,7 @@ static int nsio_rw_bytes(struct nd_namespace_common *ndns, && !(flags & NVDIMM_IO_ATOMIC)) { long cleared; + might_sleep(); cleared = nvdimm_clear_poison(&ndns->dev, nsio->res.start + offset, size); if (cleared < size) |