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-rw-r--r--fs/block_dev.c2
-rw-r--r--fs/dax.c1
2 files changed, 2 insertions, 1 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 81c0705558be..ddc6cdd1860b 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -494,6 +494,8 @@ long bdev_direct_access(struct block_device *bdev, sector_t sector,
avail = ops->direct_access(bdev, sector, addr, pfn);
if (!avail)
return -ERANGE;
+ if (avail > 0 && avail & ~PAGE_MASK)
+ return -ENXIO;
return min(avail, size);
}
EXPORT_SYMBOL_GPL(bdev_direct_access);
diff --git a/fs/dax.c b/fs/dax.c
index 11721c0fc127..1080fb50fa4d 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -52,7 +52,6 @@ int dax_clear_blocks(struct inode *inode, sector_t block, long size)
sz = min_t(long, count, SZ_128K);
clear_pmem(addr, sz);
size -= sz;
- BUG_ON(sz & 511);
sector += sz / 512;
cond_resched();
} while (size);