btrfs: do not background blkdev_put()

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At the end of unmount/dev-delete, if the device exclusive open is not
actually closed, then there might be a race with another program in
the userland who is trying to open the device in exclusive mode and
it may fail for eg:
      unmount /btrfs; fsck /dev/x
      btrfs dev del /dev/x /btrfs; fsck /dev/x
so here background blkdev_put() is not a choice

Signed-off-by: Anand Jain <Anand.Jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Chris Mason <clm@fb.com>

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Anand Jain 2016-07-22 06:04:53 +08:00 • committed by Chris Mason

parent 28b737f6ed

commit 1423881941

1 changed files with 19 additions and 8 deletions

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fs/btrfs/volumes.c

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