tree fefdedfa4ff3872c5a10affb50ebcd47cba59927
parent 74986213adaff2ceab81fc0bb29dbb80d05665b3
author Fan Li <fanofcode.li@samsung.com> 1510053264 +0800
committer Jaegeuk Kim <jaegeuk@kernel.org> 1510249389 -0800

f2fs: optimize the way of traversing free_nid_bitmap

We call scan_free_nid_bits only when there isn't many
free nids left, it means that marked bits in free_nid_bitmap
are supposed to be few, use find_next_bit_le is more
efficient in such case.
According to my tests, use find_next_bit_le instead of
test_bit_le will cut down the traversal time to one
third of its original.

Signed-off-by: Fan li <fanofcode.li@samsung.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>