[PATCH] newlib: fclose: Use sfp lock while fp lock is active

[Corinna Vinschen]

On Jul 16 23:42, Takashi Yano via Newlib wrote:
> With the commit 656df313e08a, if a thread acquires sfp lock after
> another thread calls fclose() and fp lock is acquired, the first
> thread falls into deadlock if it trys to acquire fp lock. This can
                                   ^^^^
                                   tries

> happen if the first thread calls __sft_lock_all() while the second
                                     ^^^
                                     sfp

> thread calls fclose().
> 
> This patch reverts the changes for newlib/libc/stdio/fclose.c in
> the commit 656df313e08a.

D'uh, thanks for tracking this down.  That was an optimization attempt
at its worst.  Please push (to 3.6 branch as well, obnviously).


Thanks,
Corinna