f2fs: fix wrong max cost initialization
This patch fixes missing increased max cost caused by a patch that we increased
cose of data segments in greedy algorithm.
Cc: <stable@vger.kernel.org> # v4.10+
Fixes: b9cd20619 "f2fs: node segment is prior to data segment selected victim"
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index 939be88..704bea6 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -182,7 +182,7 @@ static unsigned int get_max_cost(struct f2fs_sb_info *sbi,
if (p->alloc_mode == SSR)
return sbi->blocks_per_seg;
if (p->gc_mode == GC_GREEDY)
- return sbi->blocks_per_seg * p->ofs_unit;
+ return 2 * sbi->blocks_per_seg * p->ofs_unit;
else if (p->gc_mode == GC_CB)
return UINT_MAX;
else /* No other gc_mode */
