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dax: Use dax_write_cache* helpers 

Use dax_write_cache() and dax_write_cache_enabled() instead of open coding
the bit operations.

Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Ross Zwisler 2018-06-06 10:45:14 -06:00 committed by Dan Williams
parent 546eb0317c
commit 808c340be1
1 changed files with 3 additions and 6 deletions
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9
drivers/dax/super.c
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@ -182,8 +182,7 @@ static ssize_t write_cache_show(struct device *dev,
if (!dax_dev)
return -ENXIO;
rc = sprintf(buf, "%d\n", !!test_bit(DAXDEV_WRITE_CACHE,
&dax_dev->flags));
rc = sprintf(buf, "%d\n", !!dax_write_cache_enabled(dax_dev));
put_dax(dax_dev);
return rc;
}
@ -201,10 +200,8 @@ static ssize_t write_cache_store(struct device *dev,
if (rc)
len = rc;
else if (write_cache)
set_bit(DAXDEV_WRITE_CACHE, &dax_dev->flags);
else
clear_bit(DAXDEV_WRITE_CACHE, &dax_dev->flags);
dax_write_cache(dax_dev, write_cache);
put_dax(dax_dev);
return len;
@ -286,7 +283,7 @@ EXPORT_SYMBOL_GPL(dax_copy_from_iter);
void arch_wb_cache_pmem(void *addr, size_t size);
void dax_flush(struct dax_device *dax_dev, void *addr, size_t size)
{
if (unlikely(!test_bit(DAXDEV_WRITE_CACHE, &dax_dev->flags)))
if (unlikely(!dax_write_cache_enabled(dax_dev)))
return;
arch_wb_cache_pmem(addr, size);