Re: [PATCH 2/2] Avoid that SCSI device removal through sysfs triggers a deadlock

On Mon, 2018-07-30 at 11:40 -0700, Bart Van Assche wrote:

A long time ago the unfortunate decision was taken to add a self- deletion attribute to the sysfs SCSI device directory. That decision was unfortunate because self-deletion is really tricky. We can't drop that attribute because widely used user space software depends on it, namely the rescan-scsi-bus.sh script. Hence this patch that avoids that writing into that attribute triggers a deadlock. See also commit 7973cbd9fbd9 ("[PATCH] add sysfs attributes to scan and delete scsi_devices").

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During my kernel tests of today I noticed that this patch makes booting significantly slower: boot time for a VM increases from 6s to 157s. Martin, please drop this patch series.

Thanks,

Bart.