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Paolo 'Blaisorblade' Giarrusso 48af05ed54 [PATCH] uml: fix proc-vs-interrupt context spinlock deadlock ... This spinlock can be taken on interrupt too, so spin_lock_irq[save] must be used. However, Documentation/networking/netdevices.txt explains we are called with rtnl_lock() held - so we don't need to care about other concurrent opens. Verified also in LDD3 and by direct checking. Also verified that the network layer (through a state machine) guarantees us that nobody will close the interface while it's being used. Please correct me if I'm wrong. Also, we must check we don't sleep with irqs disabled!!! But anyway, this is not news - we already can't sleep while holding a spinlock. Who says this is guaranted really by the present code? Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Jeff Dike <jdike@addtoit.com> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		19 years ago
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alpha	…
arm	…
arm26	…
avr32	[PATCH] AVR32: Use unsigned long flags for saving interrupt state	19 years ago
cris	…
frv	…
h8300	…
i386	[PATCH] Have x86 use add_active_range() and free_area_init_nodes	19 years ago
ia64	[PATCH] Have ia64 use add_active_range() and free_area_init_nodes	19 years ago
m32r	…
m68k	…
m68knommu	…
mips	…
parisc	…
powerpc	[PATCH] Have Power use add_active_range() and free_area_init_nodes()	19 years ago
ppc	[PATCH] Have Power use add_active_range() and free_area_init_nodes()	19 years ago
s390	…
sh	…
sh64	…
sparc	…
sparc64	…
um	[PATCH] uml: fix proc-vs-interrupt context spinlock deadlock	19 years ago
v850	…
x86_64	[PATCH] Allow an arch to expand node boundaries	19 years ago
xtensa	…