On Tuesday 01 April 2008, Nathan Lynch wrote:
> Jens Osterkamp wrote:
> >
> > Handling of the proc_dir_entry->count has being changed in 2.6.24-rc5.
>
> Do you know which commit caused the change?
Yes, we bisected it to the following commit :
commit 5a622f2d0f86b316b07b55a4866ecb5518dd1cf7
Author: Alexey Dobriyan <[EMAIL PROTECTED]>
Date: Tue Dec 4 23:45:28 2007 -0800
proc: fix proc_dir_entry refcounting
Creating PDEs with refcount 0 and "deleted" flag has problems (see below).
Switch to usual scheme:
* PDE is created with refcount 1
* every de_get does +1
* every de_put() and remove_proc_entry() do -1
* once refcount reaches 0, PDE is freed.
This elegantly fixes at least two following races (both observed) without
introducing new locks, without abusing old locks, without spreading
lock_kernel():
[...]
Gruß,
Jens
IBM Deutschland Entwicklung GmbH
Vorsitzender des Aufsichtsrats: Martin Jetter
Geschäftsführung: Herbert Kircher
Sitz der Gesellschaft: Böblingen
Registergericht: Amtsgericht Stuttgart, HRB 243294
_______________________________________________
Linuxppc-dev mailing list
Linuxppc-dev@ozlabs.org
https://ozlabs.org/mailman/listinfo/linuxppc-dev
