Commit 7fd97019 authored Mar 06, 2015 by Wanpeng Li Committed by Jaegeuk Kim Apr 10, 2015

f2fs: reduce searching region of segmap when set free section



In __set_free we will check whether all segment are free in one section
when free one segment, in order to set section to free status. But the
searching region of segmap is from start segno to last segno of main
area, it's not necessary. So let's just only check all segment bitmap
of target section.

Signed-off-by: Wanpeng Li <wanpeng.li@linux.intel.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

parent fdf6c8be

fs/f2fs/segment.h

+2 −1

Original line number	Diff line number	Diff line
		@@ -336,7 +336,8 @@ static inline void __set_free(struct f2fs_sb_info *sbi, unsigned int segno)
		clear_bit(segno, free_i->free_segmap);
		free_i->free_segments++;

		next = find_next_bit(free_i->free_segmap, MAIN_SEGS(sbi), start_segno);
		next = find_next_bit(free_i->free_segmap,
		start_segno + sbi->segs_per_sec, start_segno);
		if (next >= start_segno + sbi->segs_per_sec) {
		clear_bit(secno, free_i->free_secmap);
		free_i->free_sections++;

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