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Subject[PATCH] bdev: reset first_open when looping in __blkget_dev
Date
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 69bf2fb6f7cd..17e1231d5246 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
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