From: Michal Suchanek <msuchanek@suse.de>
To: linux-scsi@vger.kernel.org, linux-block@vger.kernel.org
Cc: Michal Suchanek <msuchanek@suse.de>,
Jonathan Corbet <corbet@lwn.net>, Jens Axboe <axboe@kernel.dk>,
"James E.J. Bottomley" <jejb@linux.ibm.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Eric Biggers <ebiggers@google.com>,
"J. Bruce Fields" <bfields@redhat.com>,
Mauro Carvalho Chehab <mchehab+samsung@kernel.org>,
Benjamin Coddington <bcodding@redhat.com>,
Ming Lei <ming.lei@redhat.com>,
Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>,
Bart Van Assche <bvanassche@acm.org>,
Damien Le Moal <damien.lemoal@wdc.com>,
Hou Tao <houtao1@huawei.com>,
Pavel Begunkov <asml.silence@gmail.com>,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
Jan Kara <jack@suse.cz>, Hannes Reinecke <hare@suse.com>,
"Ewan D. Milne" <emilne@redhat.com>,
Christoph Hellwig <hch@infradead.org>,
Matthew Wilcox <willy@infradead.org>
Subject: [PATCH v4 rebase 06/10] bdev: reset first_open when looping in __blkget_dev
Date: Tue, 26 Nov 2019 20:54:25 +0100 [thread overview]
Message-ID: <b241c0d380e42c114bd9ca7955260fdd708ef76c.1574797504.git.msuchanek@suse.de> (raw)
In-Reply-To: <cover.1574797504.git.msuchanek@suse.de>
It is not clear that no other thread cannot open the block device when
__blkget_dev drops it and loop to restart label. Reset first_open to
false when looping.
Signed-off-by: Michal Suchanek <msuchanek@suse.de>
---
fs/block_dev.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/fs/block_dev.c b/fs/block_dev.c
index ee63c2732fa2..545bb6c8848a 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -1560,7 +1560,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
int ret;
int partno;
int perm = 0;
- bool first_open = false;
+ bool first_open;
if (mode & FMODE_READ)
perm |= MAY_READ;
@@ -1580,6 +1580,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
restart:
ret = -ENXIO;
+ first_open = false;
disk = bdev_get_gendisk(bdev, &partno);
if (!disk)
goto out;
--
2.23.0
next prev parent reply other threads:[~2019-11-26 19:55 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-26 19:54 [PATCH v4 rebase 00/10] Fix cdrom autoclose Michal Suchanek
2019-11-26 19:54 ` [PATCH v4 rebase 01/10] cdrom: add poll_event_interruptible Michal Suchanek
2019-11-26 19:54 ` [PATCH v4 rebase 02/10] cdrom: factor out common open_for_* code Michal Suchanek
2019-11-26 19:54 ` [PATCH v4 rebase 03/10] cdrom: wait for the tray to close Michal Suchanek
2019-11-26 19:54 ` [PATCH v4 rebase 04/10] cdrom: export autoclose logic as a separate function Michal Suchanek
2019-11-26 19:54 ` [PATCH v4 rebase 05/10] cdrom: unify log messages Michal Suchanek
2019-11-26 19:54 ` Michal Suchanek [this message]
2019-11-26 19:54 ` [PATCH v4 rebase 07/10] bdev: separate parts of __blkdev_get as helper functions Michal Suchanek
2019-11-26 19:54 ` [PATCH v4 rebase 08/10] bdev: add open_finish Michal Suchanek
2019-11-26 19:54 ` [PATCH v4 rebase 09/10] scsi: blacklist: add VMware ESXi cdrom - broken tray emulation Michal Suchanek
2019-11-26 19:54 ` [PATCH v4 rebase 10/10] scsi: sr: wait for the medium to become ready Michal Suchanek
2019-11-26 20:01 ` [PATCH v4 rebase 00/10] Fix cdrom autoclose Jens Axboe
2019-11-26 20:21 ` Michal Suchánek
2019-11-26 23:13 ` Jens Axboe
2019-11-27 8:11 ` Michal Suchánek
2019-12-04 19:01 ` Michal Suchánek
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