f2fs: optimize the way of traversing free_nid_bitmap

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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>

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Fan Li 2017-11-07 19:14:24 +08:00 • committed by Jaegeuk Kim

parent 74986213ad

commit 9745657449

1 changed files with 5 additions and 5 deletions

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fs/f2fs/node.c

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