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    Btrfs: split the global ordered extents mutex · 31f3d255
    Miao Xie 提交于
    When we create a snapshot, we just need wait the ordered extents in
    the source fs/file root, but because we use the global mutex to protect
    this ordered extents list of the source fs/file root to avoid accessing
    a empty list, if someone got the mutex to access the ordered extents list
    of the other fs/file root, we had to wait.
    
    This patch splits the above global mutex, now every fs/file root has
    its own mutex to protect its own list.
    Signed-off-by: NMiao Xie <miaox@cn.fujitsu.com>
    Signed-off-by: NJosef Bacik <jbacik@fb.com>
    31f3d255
disk-io.c 110.8 KB