39 lines
1.1 KiB
Diff
39 lines
1.1 KiB
Diff
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From 20e9fa6f969b3c6a4b3ff9941c351e90320aed61 Mon Sep 17 00:00:00 2001
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From: Wang Shilong <wangsl.fnst@cn.fujitsu.com>
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Date: Thu, 24 Apr 2014 11:19:17 +0800
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Subject: [PATCH 14/42] Btrfs-progs: fsck: avoid pinning same block several
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times
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This can not only give some speedups but also avoid forever loop
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with a really broken filesystem.
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Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com>
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Signed-off-by: David Sterba <dsterba@suse.cz>
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---
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cmds-check.c | 9 +++++++++
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1 file changed, 9 insertions(+)
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diff --git a/cmds-check.c b/cmds-check.c
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index 7457618fb702..57d3f36eea1f 100644
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--- a/cmds-check.c
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+++ b/cmds-check.c
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@@ -6190,6 +6190,15 @@ static int pin_down_tree_blocks(struct btrfs_fs_info *fs_info,
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int ret;
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int i;
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+ /*
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+ * If we have pinned this block before, don't pin it again.
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+ * This can not only avoid forever loop with broken filesystem
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+ * but also give us some speedups.
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+ */
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+ if (test_range_bit(&fs_info->pinned_extents, eb->start,
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+ eb->start + eb->len - 1, EXTENT_DIRTY, 0))
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+ return 0;
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+
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btrfs_pin_extent(fs_info, eb->start, eb->len);
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leafsize = btrfs_super_leafsize(fs_info->super_copy);
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--
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1.9.0
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