On 12/02/12 14:45, Tejun Heo wrote:
On Wed, Nov 28, 2012 at 01:51:13PM +0100, Bart Van Assche wrote:+/* Test whether scsi_remove_host() may finish, and if so, wake it up. */ +void __scsi_check_remove_host_done(struct Scsi_Host *shost) +{ + lockdep_assert_held(shost->host_lock); + + if (__scsi_remove_host_done(shost)) + wake_up(&shost->remove_host); +}This being an one-time thing. Using completion could be simpler. e.g.
Sorry but I'm not sure that would work here. A user can e.g. delete all SCSI devices associated with a SCSI host (echo 1 >/sys/class/scsi_host/host<n>/device/target<m>/<lun>/delete) and then issue a rescan to re-add LUNs. When using a completion the completion would be set as soon as the last SCSI device has been deleted instead of only after scsi_remove_host() finished removing the re-added SCSI devices.
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