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Commit b35de43b authored by Andrea Righi's avatar Andrea Righi Committed by Linus Torvalds
Browse files

kfifo: implement missing __kfifo_skip_r() 



kfifo_skip() is currently broken, due to the missing of the internal
helper function.  Add it.

Signed-off-by: default avatarAndrea Righi <arighi@develer.com>
Cc: Greg KH <greg@kroah.com>
Acked-by: default avatarStefani Seibold <stefani@seibold.net>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent c81476df

include/linux/kfifo.h

+2 −0
Original line number Diff line number Diff line
@@ -836,6 +836,8 @@ extern void __kfifo_dma_out_finish_r(struct __kfifo *fifo, size_t recsize); 


extern unsigned int __kfifo_len_r(struct __kfifo *fifo, size_t recsize);



extern void __kfifo_skip_r(struct __kfifo *fifo, size_t recsize);



extern unsigned int __kfifo_out_peek_r(struct __kfifo *fifo,

	void *buf, unsigned int len, size_t recsize);

kernel/kfifo.c

+9 −0
Original line number Diff line number Diff line
@@ -503,6 +503,15 @@ unsigned int __kfifo_out_r(struct __kfifo *fifo, void *buf, 
}

EXPORT_SYMBOL(__kfifo_out_r);



void __kfifo_skip_r(struct __kfifo *fifo, size_t recsize)

{

	unsigned int n;



	n = __kfifo_peek_n(fifo, recsize);

	fifo->out += n + recsize;

}

EXPORT_SYMBOL(__kfifo_skip_r);



int __kfifo_from_user_r(struct __kfifo *fifo, const void __user *from,

	unsigned long len, unsigned int *copied, size_t recsize)

{