Commit f05c4403 authored Dec 04, 2020 by Mike Snitzer

dm: fix double RCU unlock in dm_dax_zero_page_range() error path



Remove redundant dm_put_live_table() in dm_dax_zero_page_range() error
path to fix sparse warning:
drivers/md/dm.c:1208:9: warning: context imbalance in 'dm_dax_zero_page_range' - unexpected unlock

Fixes: cdf6cdcd ("dm,dax: Add dax zero_page_range operation")
Cc: stable@vger.kernel.org
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

parent 3ee16db3

drivers/md/dm.c

+0 −2

Original line number	Diff line number	Diff line
		@@ -1201,11 +1201,9 @@ static int dm_dax_zero_page_range(struct dax_device *dax_dev, pgoff_t pgoff,
		* ->zero_page_range() is mandatory dax operation. If we are
		* here, something is wrong.
		*/
		dm_put_live_table(md, srcu_idx);
		goto out;
		}
		ret = ti->type->dax_zero_page_range(ti, pgoff, nr_pages);

		out:
		dm_put_live_table(md, srcu_idx);

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