ptr_ring_resize

Name:Note: producer lock is nested within consumer lock, so if you* resize you must make sure all uses nest correctly.* In particular if you consume ring in interrupt or BH context, you must* disable interrupts/BH when doing so.

Proto:static inline int ptr_ring_resize(struct ptr_ring *r, int size, gfp_t gfp, void (*destroy)(void *))

Type:int

Parameter:

Type	Parameter	Name
struct ptr_ring *	r
int	size
gfp_t	gfp
void (*	destroy

593

queue = Not all gfp_t flags (besides GFP_KERNEL) are allowed. See* documentation for vmalloc for which of them are legal.

596

If Not queue Then Return -ENOMEM

599

spin_lock_irqsave( & consumer_lock, flags)

600

spin_lock( & producer_lock)

602

old = __ptr_ring_swap_queue(r, queue, size, gfp, destroy)

604

spin_unlock( & producer_lock)

605

spin_unlock_irqrestore( & consumer_lock, flags)

607

kvfree(old)

609

Return 0

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Function report