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dm cache metadata: Fix loading discard bitset
commite28adc3bf3
upstream. Add missing dm_bitset_cursor_next() to properly advance the bitset cursor. Otherwise, the discarded state of all blocks is set according to the discarded state of the first block. Fixes:ae4a46a1f6
("dm cache metadata: use bitset cursor api to load discard bitset") Cc: stable@vger.kernel.org Signed-off-by: Nikos Tsironis <ntsironis@arrikto.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1 changed files with 8 additions and 1 deletions
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@ -1167,11 +1167,18 @@ static int __load_discards(struct dm_cache_metadata *cmd,
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if (r)
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return r;
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for (b = 0; b < from_dblock(cmd->discard_nr_blocks); b++) {
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for (b = 0; ; b++) {
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r = fn(context, cmd->discard_block_size, to_dblock(b),
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dm_bitset_cursor_get_value(&c));
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if (r)
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break;
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if (b >= (from_dblock(cmd->discard_nr_blocks) - 1))
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break;
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r = dm_bitset_cursor_next(&c);
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if (r)
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break;
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}
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dm_bitset_cursor_end(&c);
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