From e37d07983af9068de0303054542d2652ca917f58 Mon Sep 17 00:00:00 2001 From: Javier González Date: Fri, 1 Jun 2018 15:04:19 +0200 Subject: lightnvm: pblk: warn in case of corrupted write buffer MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When cleaning up buffer entries as we wrap up, their state should be "completed". If any of the entries is in "submitted" state, it means that something bad has happened. Trigger a warning immediately instead of waiting for the state flag to eventually be updated, thus hiding the issue. Signed-off-by: Javier González Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe --- drivers/lightnvm/pblk-rb.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'drivers/lightnvm') diff --git a/drivers/lightnvm/pblk-rb.c b/drivers/lightnvm/pblk-rb.c index 52fdd85dbc97..58946ffebe81 100644 --- a/drivers/lightnvm/pblk-rb.c +++ b/drivers/lightnvm/pblk-rb.c @@ -142,10 +142,9 @@ static void clean_wctx(struct pblk_w_ctx *w_ctx) { int flags; -try: flags = READ_ONCE(w_ctx->flags); - if (!(flags & PBLK_SUBMITTED_ENTRY)) - goto try; + WARN_ONCE(!(flags & PBLK_SUBMITTED_ENTRY), + "pblk: overwriting unsubmitted data\n"); /* Release flags on context. Protect from writes and reads */ smp_store_release(&w_ctx->flags, PBLK_WRITABLE_ENTRY); -- cgit v1.2.3