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    Btrfs: introduce convert_extent_bit · 462d6fac
    Josef Bacik 提交于
    If I have a range where I know a certain bit is and I want to set it to another
    bit the only option I have is to call set and then clear bit, which will result
    in 2 tree searches.  This is inefficient, so introduce convert_extent_bit which
    will go through and set the bit I want and clear the old bit I don't want.
    Thanks,
    Signed-off-by: NJosef Bacik <josef@redhat.com>
    462d6fac
extent_io.c 97.3 KB