kfifo: implement missing __kfifo_skip_r()
in [Kernel]
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From: Stefani Seibold on 12 Aug 2010 16:50 kfifo_skip() is currently broken, due to the missing of the internal helper function. Add it. Signed-off-by: Andrea Righi <arighi(a)develer.com> Acked-by: Stefani Seibold <stefani(a)seibold.net> --- include/linux/kfifo.h | 2 ++ kernel/kfifo.c | 9 +++++++++ 2 files changed, 11 insertions(+), 0 deletions(-) diff --git a/include/linux/kfifo.h b/include/linux/kfifo.h index 311f875..4aa95f2 100644 --- a/include/linux/kfifo.h +++ b/include/linux/kfifo.h @@ -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); diff --git a/kernel/kfifo.c b/kernel/kfifo.c index 02192dd..06d6eee 100644 --- a/kernel/kfifo.c +++ b/kernel/kfifo.c @@ -504,6 +504,15 @@ 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) { -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |