Commit b28c3f94 authored Feb 28, 2015 by Chao Yu Committed by Jaegeuk Kim Apr 10, 2015

f2fs: fix to issue small discard in real-time mode discard

Now in f2fs, we share functions and structures for batch mode and real-time mode
discard. For real-time mode discard, in shared function add_discard_addrs, we
will use uninitialized trim_minlen in struct cp_control to compare with length
of contiguous free blocks to decide whether skipping discard fragmented freespace
or not, this makes us ignore small discard sometimes. Fix it.

Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Reviewed-by : Changman Lee <cm224.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

parent 7ecebe5e

fs/f2fs/segment.c

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -552,7 +552,7 @@ static void add_discard_addrs(struct f2fs_sb_info sbi, struct cp_control cpc)

	end = __find_rev_next_zero_bit(dmap, max_blocks, start + 1);		end = __find_rev_next_zero_bit(dmap, max_blocks, start + 1);

	if (end - start < cpc->trim_minlen)		if (force && end - start < cpc->trim_minlen)
	continue;		continue;

	__add_discard_entry(sbi, cpc, start, end);		__add_discard_entry(sbi, cpc, start, end);