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| author | Mark Brown <broonie@kernel.org> | 2020-10-06 16:19:24 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-10-06 16:19:24 +0100 |
| commit | fd6b519a30a7179026d22c98d6bf10bb5ca8ca27 (patch) | |
| tree | e4a6bc4d8548a5b8db7148a18eb257b84e72d48b /drivers/md/dm-writecache.c | |
| parent | 43499134f50a77844f0503df2c995f43b858f4c3 (diff) | |
| parent | 856deb866d16e29bd65952e0289066f6078af773 (diff) | |
| download | linux-stable-fd6b519a30a7179026d22c98d6bf10bb5ca8ca27.tar.gz linux-stable-fd6b519a30a7179026d22c98d6bf10bb5ca8ca27.tar.bz2 linux-stable-fd6b519a30a7179026d22c98d6bf10bb5ca8ca27.zip | |
Merge tag 'v5.9-rc5' into asoc-5.10
Linux 5.9-rc5
Diffstat (limited to 'drivers/md/dm-writecache.c')
| -rw-r--r-- | drivers/md/dm-writecache.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/md/dm-writecache.c b/drivers/md/dm-writecache.c index 86dbe0c8b45c..6271d1e741cf 100644 --- a/drivers/md/dm-writecache.c +++ b/drivers/md/dm-writecache.c @@ -231,6 +231,7 @@ static int persistent_memory_claim(struct dm_writecache *wc) pfn_t pfn; int id; struct page **pages; + sector_t offset; wc->memory_vmapped = false; @@ -245,9 +246,16 @@ static int persistent_memory_claim(struct dm_writecache *wc) goto err1; } + offset = get_start_sect(wc->ssd_dev->bdev); + if (offset & (PAGE_SIZE / 512 - 1)) { + r = -EINVAL; + goto err1; + } + offset >>= PAGE_SHIFT - 9; + id = dax_read_lock(); - da = dax_direct_access(wc->ssd_dev->dax_dev, 0, p, &wc->memory_map, &pfn); + da = dax_direct_access(wc->ssd_dev->dax_dev, offset, p, &wc->memory_map, &pfn); if (da < 0) { wc->memory_map = NULL; r = da; @@ -269,7 +277,7 @@ static int persistent_memory_claim(struct dm_writecache *wc) i = 0; do { long daa; - daa = dax_direct_access(wc->ssd_dev->dax_dev, i, p - i, + daa = dax_direct_access(wc->ssd_dev->dax_dev, offset + i, p - i, NULL, &pfn); if (daa <= 0) { r = daa ? daa : -EINVAL; |