linux-kernel - [PATCH] scsi: fnic: Make use of vzalloc() instead of vmalloc/memset()

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Message-ID: <20211018131637.381-1-caihuoqing@baidu.com>
Date:   Mon, 18 Oct 2021 21:16:37 +0800
From:   Cai Huoqing <caihuoqing@...du.com>
To:     <caihuoqing@...du.com>
CC:     Satish Kharat <satishkh@...co.com>,
        Sesidhar Baddela <sebaddel@...co.com>,
        Karan Tilak Kumar <kartilak@...co.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        <linux-scsi@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH] scsi: fnic: Make use of vzalloc() instead of vmalloc/memset()

Replacing vmalloc()/memset() with vzalloc() to simplify the code.

Signed-off-by: Cai Huoqing <caihuoqing@...du.com>
---
 drivers/scsi/fnic/fnic_debugfs.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/scsi/fnic/fnic_debugfs.c b/drivers/scsi/fnic/fnic_debugfs.c
index e7326505cabb..e2fea5b574c3 100644
--- a/drivers/scsi/fnic/fnic_debugfs.c
+++ b/drivers/scsi/fnic/fnic_debugfs.c
@@ -216,25 +216,21 @@ static int fnic_trace_debugfs_open(struct inode *inode,
 		return -ENOMEM;
 
 	if (*rdata_ptr == fc_trc_flag->fnic_trace) {
-		fnic_dbg_prt->buffer = vmalloc(array3_size(3, trace_max_pages,
+		fnic_dbg_prt->buffer = vzalloc(array3_size(3, trace_max_pages,
 							   PAGE_SIZE));
 		if (!fnic_dbg_prt->buffer) {
 			kfree(fnic_dbg_prt);
 			return -ENOMEM;
 		}
-		memset((void *)fnic_dbg_prt->buffer, 0,
-		3 * (trace_max_pages * PAGE_SIZE));
 		fnic_dbg_prt->buffer_len = fnic_get_trace_data(fnic_dbg_prt);
 	} else {
 		fnic_dbg_prt->buffer =
-			vmalloc(array3_size(3, fnic_fc_trace_max_pages,
+			vzalloc(array3_size(3, fnic_fc_trace_max_pages,
 					    PAGE_SIZE));
 		if (!fnic_dbg_prt->buffer) {
 			kfree(fnic_dbg_prt);
 			return -ENOMEM;
 		}
-		memset((void *)fnic_dbg_prt->buffer, 0,
-			3 * (fnic_fc_trace_max_pages * PAGE_SIZE));
 		fnic_dbg_prt->buffer_len =
 			fnic_fc_trace_get_data(fnic_dbg_prt, *rdata_ptr);
 	}
-- 
2.25.1