From 28cd88e2b4c54a466dcae7eea1efac766d42386b Mon Sep 17 00:00:00 2001 From: Zhengyuan Liu Date: Mon, 24 Oct 2016 09:55:20 +0800 Subject: md/raid5: initialize next_checkpoint field before use No initial operation was done to this field when we load/recovery the log, it got assignment only when IO to raid disk was finished. So r5l_quiesce may use wrong next_checkpoint to reclaim log space, that would make reclaimable space calculation confused. Signed-off-by: Zhengyuan Liu Signed-off-by: Shaohua Li --- drivers/md/raid5-cache.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/md/raid5-cache.c') diff --git a/drivers/md/raid5-cache.c b/drivers/md/raid5-cache.c index 1b1ab4a1d132..998ea0025dd0 100644 --- a/drivers/md/raid5-cache.c +++ b/drivers/md/raid5-cache.c @@ -1096,6 +1096,8 @@ static int r5l_recovery_log(struct r5l_log *log) log->seq = ctx.seq + 11; log->log_start = r5l_ring_add(log, ctx.pos, BLOCK_SECTORS); r5l_write_super(log, ctx.pos); + log->last_checkpoint = ctx.pos; + log->next_checkpoint = ctx.pos; } else { log->log_start = ctx.pos; log->seq = ctx.seq; @@ -1168,6 +1170,7 @@ create: if (log->max_free_space > RECLAIM_MAX_FREE_SPACE) log->max_free_space = RECLAIM_MAX_FREE_SPACE; log->last_checkpoint = cp; + log->next_checkpoint = cp; __free_page(page); -- cgit v1.2.3