Btrfs: Fix btrfs_drop_extent_cache for skip pinned case
The check for skip pinned case is wrong, it may breaks the while loop too soon. Signed-off-by: Yan Zheng <zheng.yan@oracle.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
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@ -179,18 +179,14 @@ int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end,
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}
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flags = em->flags;
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if (skip_pinned && test_bit(EXTENT_FLAG_PINNED, &em->flags)) {
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if (em->start <= start &&
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(!testend || em->start + em->len >= start + len)) {
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if (testend && em->start + em->len >= start + len) {
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free_extent_map(em);
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write_unlock(&em_tree->lock);
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break;
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}
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if (start < em->start) {
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len = em->start - start;
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} else {
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start = em->start + em->len;
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if (testend)
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len = start + len - (em->start + em->len);
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start = em->start + em->len;
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}
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free_extent_map(em);
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write_unlock(&em_tree->lock);
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continue;
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