* Removing a sysfs attrinute file while user space is accessing it
@ 2015-05-05 0:50 Rajat Jain
0 siblings, 0 replies; only message in thread
From: Rajat Jain @ 2015-05-05 0:50 UTC (permalink / raw)
To: linux-newbie
Hello,
What happens if the kernel tries to remove a sysfs attribute that is
currently in use by the user space (i.e. a user spacecode is, say
executing the corresponding show()/store() method of that sysfs
attribute)?
I have some confidence that the call shall sleep untill the user space
process is done with the read / write to the sysfs attribute. Is my
understanding correct?
If so, can some one point me to the supporting code (e.g. which locks
/ mutexes etc) provide this behaviour?
Thanks,
Rajat
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