From 516e8cd7704150e40dbdaee6dbd5aeca818fee0c Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim Date: Sat, 23 Jan 2016 22:00:57 +0800 Subject: [PATCH] f2fs: fix to overcome inline_data floods The scenario is: 1. create lots of node blocks 2. sync 3. write lots of inline_data -> got panic due to no free space In that case, we should flush node blocks when writing inline_data in #3, and trigger gc as well. Signed-off-by: Jaegeuk Kim --- fs/f2fs/gc.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index 3015934a958b..69349221852a 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -835,8 +835,15 @@ int f2fs_gc(struct f2fs_sb_info *sbi, bool sync) if (gc_type == BG_GC && has_not_enough_free_secs(sbi, sec_freed)) { gc_type = FG_GC; + /* + * If there is no victim and no prefree segment but still not + * enough free sections, we should flush dent/node blocks and do + * garbage collections. + */ if (__get_victim(sbi, &segno, gc_type) || prefree_segments(sbi)) write_checkpoint(sbi, &cpc); + else if (has_not_enough_free_secs(sbi, 0)) + write_checkpoint(sbi, &cpc); } if (segno == NULL_SEGNO && !__get_victim(sbi, &segno, gc_type))