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[SCSI] fix CONFIG_SCSI_WAIT_SCAN=m

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CONFIG_MODULES=y
CONFIG_SCSI=y
CONFIG_SCSI_SCAN_ASYNC=y
CONFIG_SCSI_WAIT_SCAN=m

2.6.21-rc5-mm2 VFS panics unable to find my root on /dev/sda2, but boots
okay if I change drivers/scsi/Kconfig to "default y" instead of "default m"
for SCSI_WAIT_SCAN.

Make sure there's a late_initcall to scsi_complete_async_scans when it's
built in, so a monolithic SCSI_SCAN_ASYNC kernel can rely on the scans
being completed before trying to mount root, even if they're slow.

[[email protected]: build fixes]
Signed-off-by: Hugh Dickins <[email protected]>
Acked-by: Matthew Wilcox <[email protected]>
Signed-off-by: James Bottomley <[email protected]>
This commit is contained in:
Hugh Dickins 2007-05-23 14:41:42 -07:00 • committed by James Bottomley
commit f2f027c6e9
1 changed files with 9 additions and 0 deletions
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9
drivers/scsi/scsi_scan.c
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@ -184,6 +184,15 @@ int scsi_complete_async_scans(void)
/* Only exported for the benefit of scsi_wait_scan */
EXPORT_SYMBOL_GPL(scsi_complete_async_scans);
#ifndef MODULE
/*
* For async scanning we need to wait for all the scans to complete before
* trying to mount the root fs. Otherwise non-modular drivers may not be ready
* yet.
*/
late_initcall(scsi_complete_async_scans);
#endif
/**
* scsi_unlock_floptical - unlock device via a special MODE SENSE command
* @sdev: scsi device to send command to