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author | Wang Shilong <wangsl.fnst@cn.fujitsu.com> | 2014-04-24 11:19:17 +0800 |
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committer | David Sterba <dsterba@suse.cz> | 2014-10-10 10:38:16 +0200 |
commit | 897c98de73627c10e9bf68798e98b3477dfc3bb0 (patch) | |
tree | 0b2403673281cf0bb0e52bcc4ae234e245904ace | |
parent | bf17a5e43ebf7db63a64fe3e584af88e48b27355 (diff) |
btrfs-progs: fsck: avoid pinning same block several times
This can not only give some speedups but also avoid forever loop
with a really broken filesystem.
Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
-rw-r--r-- | cmds-check.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/cmds-check.c b/cmds-check.c index 23dbd0a0..afdd044d 100644 --- a/cmds-check.c +++ b/cmds-check.c @@ -6121,6 +6121,15 @@ static int pin_down_tree_blocks(struct btrfs_fs_info *fs_info, int ret; int i; + /* + * If we have pinned this block before, don't pin it again. + * This can not only avoid forever loop with broken filesystem + * but also give us some speedups. + */ + if (test_range_bit(&fs_info->pinned_extents, eb->start, + eb->start + eb->len - 1, EXTENT_DIRTY, 0)) + return 0; + btrfs_pin_extent(fs_info, eb->start, eb->len); leafsize = btrfs_super_leafsize(fs_info->super_copy); |