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yaml
---
r: 45552
b: refs/heads/master
c: 8bcc241
h: refs/heads/master
v: v3
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Matthew Wilcox authored and James Bottomley committed Jan 3, 2007
1 parent 95ce6af commit 9f03d54
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Showing 2 changed files with 10 additions and 7 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 23be331d9e5077edf07d73813f870d3b895c8593
refs/heads/master: 8bcc24127be12967588db0ad0e614be937ee1d5a
15 changes: 9 additions & 6 deletions trunk/drivers/scsi/scsi_scan.c
Original file line number Diff line number Diff line change
Expand Up @@ -133,12 +133,10 @@ struct async_scan_data {
/**
* scsi_complete_async_scans - Wait for asynchronous scans to complete
*
* Asynchronous scans add themselves to the scanning_hosts list. Once
* that list is empty, we know that the scans are complete. Rather than
* waking up periodically to check the state of the list, we pretend to be
* a scanning task by adding ourselves at the end of the list and going to
* sleep. When the task before us wakes us up, we take ourselves off the
* list and return.
* When this function returns, any host which started scanning before
* this function was called will have finished its scan. Hosts which
* started scanning after this function was called may or may not have
* finished.
*/
int scsi_complete_async_scans(void)
{
Expand Down Expand Up @@ -171,6 +169,11 @@ int scsi_complete_async_scans(void)

spin_lock(&async_scan_lock);
list_del(&data->list);
if (!list_empty(&scanning_hosts)) {
struct async_scan_data *next = list_entry(scanning_hosts.next,
struct async_scan_data, list);
complete(&next->prev_finished);
}
done:
spin_unlock(&async_scan_lock);

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