From: Joseph Qi <joseph.qi@linux.alibaba.com>
To: Christoph Hellwig <hch@lst.de>, Jens Axboe <axboe@kernel.dk>
Cc: Josef Bacik <josef@toxicpanda.com>,
Minchan Kim <minchan@kernel.org>,
Stefan Haberland <sth@linux.ibm.com>,
Jan Hoeppner <hoeppner@linux.ibm.com>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Pavel Machek <pavel@ucw.cz>, Len Brown <len.brown@intel.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, nbd@other.debian.org,
linux-ide@vger.kernel.org, linux-s390@vger.kernel.org,
linux-fsdevel@vger.kernel.org, ocfs2-devel@oss.oracle.com,
linux-pm@vger.kernel.org, linux-mm@kvack.org,
linux-block@vger.kernel.org
Subject: Re: [PATCH 09/14] ocfs2: cleanup o2hb_region_dev_store
Date: Fri, 18 Sep 2020 10:11:07 +0800 [thread overview]
Message-ID: <1c8a3a5a-aa59-f30e-4865-6777436c4225@linux.alibaba.com> (raw)
In-Reply-To: <20200917165720.3285256-10-hch@lst.de>
On 2020/9/18 00:57, Christoph Hellwig wrote:
> Use blkdev_get_by_dev instead of igrab (aka open coded bdgrab) +
> blkdev_get.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
> ---
> fs/ocfs2/cluster/heartbeat.c | 28 ++++++++++------------------
> 1 file changed, 10 insertions(+), 18 deletions(-)
>
> diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c
> index 89d13e0705fe7b..0179a73a3fa2c4 100644
> --- a/fs/ocfs2/cluster/heartbeat.c
> +++ b/fs/ocfs2/cluster/heartbeat.c
> @@ -1766,7 +1766,6 @@ static ssize_t o2hb_region_dev_store(struct config_item *item,
> int sectsize;
> char *p = (char *)page;
> struct fd f;
> - struct inode *inode;
> ssize_t ret = -EINVAL;
> int live_threshold;
>
> @@ -1793,20 +1792,16 @@ static ssize_t o2hb_region_dev_store(struct config_item *item,
> reg->hr_block_bytes == 0)
> goto out2;
>
> - inode = igrab(f.file->f_mapping->host);
> - if (inode == NULL)
> + if (!S_ISBLK(f.file->f_mapping->host->i_mode))
> goto out2;
>
> - if (!S_ISBLK(inode->i_mode))
> - goto out3;
> -
> - reg->hr_bdev = I_BDEV(f.file->f_mapping->host);
> - ret = blkdev_get(reg->hr_bdev, FMODE_WRITE | FMODE_READ, NULL);
> - if (ret) {
> + reg->hr_bdev = blkdev_get_by_dev(f.file->f_mapping->host->i_rdev,
> + FMODE_WRITE | FMODE_READ, NULL);
> + if (IS_ERR(reg->hr_bdev)) {
> + ret = PTR_ERR(reg->hr_bdev);
> reg->hr_bdev = NULL;
> - goto out3;
> + goto out2;
> }
> - inode = NULL;
>
> bdevname(reg->hr_bdev, reg->hr_dev_name);
>
> @@ -1909,16 +1904,13 @@ static ssize_t o2hb_region_dev_store(struct config_item *item,
> config_item_name(®->hr_item), reg->hr_dev_name);
>
> out3:
> - iput(inode);
> + if (ret < 0) {
> + blkdev_put(reg->hr_bdev, FMODE_READ | FMODE_WRITE);
> + reg->hr_bdev = NULL;
> + }
> out2:
> fdput(f);
> out:
> - if (ret < 0) {
> - if (reg->hr_bdev) {
> - blkdev_put(reg->hr_bdev, FMODE_READ|FMODE_WRITE);
> - reg->hr_bdev = NULL;
> - }
> - }
> return ret;
> }
>
>
next prev parent reply other threads:[~2020-09-18 2:11 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-17 16:57 remove blkdev_get as a public API Christoph Hellwig
2020-09-17 16:57 ` [PATCH 01/14] block: move the NEED_PART_SCAN flag to struct gendisk Christoph Hellwig
2020-09-24 8:56 ` Jan Kara
2020-09-17 16:57 ` [PATCH 02/14] block: switch register_disk to use blkdev_get_by_dev Christoph Hellwig
2020-09-18 8:52 ` Sergei Shtylyov
2020-09-19 5:15 ` Christoph Hellwig
2020-09-17 16:57 ` [PATCH 03/14] block: cleanup blkdev_bszset Christoph Hellwig
2020-09-17 16:57 ` [PATCH 04/14] pktcdvd: remove the if 0'ed pkt_start_recovery function Christoph Hellwig
2020-09-17 16:57 ` [PATCH 05/14] pktcdvd: use blkdev_get_by_dev instead of open coding it Christoph Hellwig
2020-09-17 16:57 ` [PATCH 06/14] zram: cleanup backing_dev_store Christoph Hellwig
2020-09-17 16:57 ` [PATCH 07/14] raw: don't keep unopened block device around Christoph Hellwig
2020-09-17 16:57 ` [PATCH 08/14] dasd: cleanup dasd_scan_partitions Christoph Hellwig
2020-09-17 16:57 ` [PATCH 09/14] ocfs2: cleanup o2hb_region_dev_store Christoph Hellwig
2020-09-18 2:11 ` Joseph Qi [this message]
2020-09-17 16:57 ` [PATCH 10/14] mm: cleanup claim_swapfile Christoph Hellwig
2020-09-17 16:57 ` [PATCH 11/14] PM: rewrite is_hibernate_resume_dev to not require an inode Christoph Hellwig
2020-09-17 17:26 ` Rafael J. Wysocki
2020-09-19 9:06 ` Pavel Machek
2020-09-17 16:57 ` [PATCH 12/14] mm: split swap_type_of Christoph Hellwig
2020-09-17 16:57 ` [PATCH 13/14] PM: mm: cleanup swsusp_swap_check Christoph Hellwig
2020-09-18 16:01 ` Rafael J. Wysocki
2020-09-19 9:06 ` Pavel Machek
2020-09-17 16:57 ` [PATCH 14/14] block: mark blkdev_get static Christoph Hellwig
2020-09-21 7:19 remove blkdev_get as a public API v2 Christoph Hellwig
2020-09-21 7:19 ` [PATCH 09/14] ocfs2: cleanup o2hb_region_dev_store Christoph Hellwig
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