tree b72431f31bb99e03d86c40cbfb17e766034ac2ef
parent 46db4a42dd1190a311c2fb45106dfd0842c65a94
author Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> 1127450661 -0700
committer Linus Torvalds <torvalds@g5.osdl.org> 1127452657 -0700

[PATCH] uml: use GFP_ATOMIC for allocations under spinlocks.

setup_initial_poll is only called with sigio_lock() held, so use appropriate
allocation.

Also, parse_chan() can also be called when holding a spinlock (see line_open()
 -> parse_chan_pair()).

I have sporadic problems (spinlock taken twice, with spinlock debugging on UP)
which could be caused by a sequence like "take spinlock, alloc and go to
sleep, take again the spinlock in the other thread".

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>