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dax: stop requiring a live device for dax_flush()

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Now that dax_flush() is no longer a driver callback (commit c3ca015fab
"dax: remove the pmem_dax_ops->flush abstraction"), stop requiring the
dax_read_lock() to be held and the device to be alive.  This is in
preparation for switching filesystem-dax to store pfns instead of
sectors in the radix.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams
2017-10-14 17:42:02 -07:00
parent 7a862fbbde
commit 6a21586a63
1 changed files with 0 additions and 3 deletions
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3
drivers/dax/super.c
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@ -273,9 +273,6 @@ EXPORT_SYMBOL_GPL(dax_copy_from_iter);
void arch_wb_cache_pmem(void *addr, size_t size); void arch_wb_cache_pmem(void *addr, size_t size);
void dax_flush(struct dax_device *dax_dev, void *addr, size_t size) void dax_flush(struct dax_device *dax_dev, void *addr, size_t size)
{ {
if (unlikely(!dax_alive(dax_dev)))
return;
if (unlikely(!test_bit(DAXDEV_WRITE_CACHE, &dax_dev->flags))) if (unlikely(!test_bit(DAXDEV_WRITE_CACHE, &dax_dev->flags)))
return; return;