Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
dm: use READ_ONCE in dm_blk_report_zones
The functon dm_blk_report_zones reads md->zone_revalidate_map, however it
may change while the function is running. Use READ_ONCE.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Fixes: 37f53a2c60d0 ("dm: fix dm_blk_report_zones")
Reviewed-by: Benjamin Marzinski <bmarzins@redhat.com>
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drivers/md/dm-zone.c
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-1
drivers/md/dm-zone.c
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{
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struct mapped_device *md = disk->private_data;
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struct dm_table *map;
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-
struct dm_table *zone_revalidate_map = md->zone_revalidate_map;
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+
struct dm_table *zone_revalidate_map = READ_ONCE(md->zone_revalidate_map);
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int srcu_idx, ret = -EIO;
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bool put_table = false;
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