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@@ -1448,13 +1448,21 @@ static inline void bm_set_full_words_within_one_page(struct drbd_bitmap *b,
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{
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int i;
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int bits;
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+ int changed = 0;
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unsigned long *paddr = kmap_atomic(b->bm_pages[page_nr], KM_IRQ1);
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for (i = first_word; i < last_word; i++) {
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bits = hweight_long(paddr[i]);
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paddr[i] = ~0UL;
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- b->bm_set += BITS_PER_LONG - bits;
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+ changed += BITS_PER_LONG - bits;
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}
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kunmap_atomic(paddr, KM_IRQ1);
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+ if (changed) {
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+ /* We only need lazy writeout, the information is still in the
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+ * remote bitmap as well, and is reconstructed during the next
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+ * bitmap exchange, if lost locally due to a crash. */
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+ bm_set_page_lazy_writeout(b->bm_pages[page_nr]);
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+ b->bm_set += changed;
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+ }
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}
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/* Same thing as drbd_bm_set_bits,
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Lars Ellenberg