forked from Minki/linux
dm btree: silence lockdep lock inversion in dm_btree_del()
Allocate memory using GFP_NOIO when deleting a btree. dm_btree_del() can be called via an ioctl and we don't want to recurse into the FS or block layer. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Cc: stable@vger.kernel.org
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@ -255,7 +255,7 @@ int dm_btree_del(struct dm_btree_info *info, dm_block_t root)
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int r;
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struct del_stack *s;
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s = kmalloc(sizeof(*s), GFP_KERNEL);
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s = kmalloc(sizeof(*s), GFP_NOIO);
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if (!s)
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return -ENOMEM;
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s->info = info;
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