From: "Javier González" <jg@lightnvm.io>
To: mb@lightnvm.io, axboe@fb.com
Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
"Javier González" <javier@cnexlabs.com>,
"Matias Bjørling" <matias@cnexlabs.com>
Subject: [PATCH 1/6] lightnvm: pblk: check for failed mempool alloc.
Date: Wed, 6 Sep 2017 17:01:01 +0200 [thread overview]
Message-ID: <1504710066-4699-2-git-send-email-javier@cnexlabs.com> (raw)
In-Reply-To: <1504710066-4699-1-git-send-email-javier@cnexlabs.com>
Check for failed mempool allocations and act accordingly.
Signed-off-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <matias@cnexlabs.com>
---
drivers/lightnvm/pblk-core.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c
index 81501644fb15..acb07bbcb416 100644
--- a/drivers/lightnvm/pblk-core.c
+++ b/drivers/lightnvm/pblk-core.c
@@ -165,6 +165,8 @@ struct nvm_rq *pblk_alloc_rqd(struct pblk *pblk, int rw)
}
rqd = mempool_alloc(pool, GFP_KERNEL);
+ if (!rqd)
+ return NULL;
memset(rqd, 0, rq_size);
return rqd;
@@ -1478,6 +1480,8 @@ int pblk_blk_erase_async(struct pblk *pblk, struct ppa_addr ppa)
int err;
rqd = mempool_alloc(pblk->g_rq_pool, GFP_KERNEL);
+ if (!rqd)
+ return -ENOMEM;
memset(rqd, 0, pblk_g_rq_size);
pblk_setup_e_rq(pblk, rqd, ppa);
--
2.7.4
next prev parent reply other threads:[~2017-09-06 15:01 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-06 15:01 [PATCH 0/6] lightnvm: pblk bug fixes for 4.14 Javier González
2017-09-06 15:01 ` Javier González [this message]
2017-09-06 15:08 ` [PATCH 1/6] lightnvm: pblk: check for failed mempool alloc Johannes Thumshirn
2017-09-06 15:09 ` Jens Axboe
2017-09-06 15:12 ` Javier González
2017-09-06 15:13 ` Jens Axboe
2017-09-06 15:14 ` Javier González
2017-09-06 15:20 ` Jens Axboe
2017-09-06 18:28 ` Javier González
2017-09-06 15:12 ` Johannes Thumshirn
2017-09-06 15:01 ` [PATCH 2/6] lightnvm: pblk: initialize debug stat counter Javier González
2017-09-06 15:15 ` Johannes Thumshirn
2017-09-06 15:01 ` [PATCH 3/6] lightnvm: pblk: use right flag for GC allocation Javier González
2017-09-06 15:19 ` Johannes Thumshirn
2017-09-06 15:01 ` [PATCH 4/6] lightnvm: pblk: free padded entries in write buffer Javier González
2017-09-06 15:22 ` Johannes Thumshirn
2017-09-06 15:01 ` [PATCH 5/6] lightnvm: pblk: fix write I/O sync stat Javier González
2017-09-06 15:23 ` Johannes Thumshirn
2017-09-06 15:01 ` [PATCH 6/6] lightnvm: pblk: avoid deadlock on low LUN config Javier González
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