cas_bd: Make cas_disk_open() exclusive - #1804
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robertbaldyga merged 1 commit intoSep 9, 2026
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Track active openers by introducing claimed flag, and make sure there is only one active opener at any time. We do it this way to separate cas_disk open exclusivity from the actual block device open/close, as the block device needs to survive in the opened state being deposited in the box and then claimed back by cas_disk_open(). Signed-off-by: Robert Baldyga <robert.baldyga@unvertical.com>
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Track active openers by introducing claimed flag, and make sure there is only one active opener at any time.
We do it this way to separate cas_disk open exclusivity from the actual block device open/close, as the block device needs to survive in the opened state being deposited in the box and then claimed back by cas_disk_open().