Messages in this thread Patch in this message | | | Subject | alloc_skb and GFP_DMA | Date | Tue, 12 Aug 1997 21:02:52 +0200 (MET DST) | From | (Rogier Wolff) |
| |
Hi,
I'm writing a device driver which requires recieve skbuffs to be DMA capable. So I allocate buffers using the mode "GFP_ATOMIC | GFP_DMA". Now it seems that this is "rejected" for no apparent reason other than an oversight. Correct? Or is there a reason why I can't allocate DMA-capable memory from an interrupt?
I'm working on 2.0.31-3 .
Below is a patch that I believe to do "the right thing"...
Roger.
--- linux/net/core/skbuff.c~ Tue May 27 11:37:54 1997 +++ linux/net/core/skbuff.c Tue Aug 12 20:55:57 1997 @@ -647,7 +647,7 @@ int len=size; unsigned char *bptr; - if (intr_count && priority!=GFP_ATOMIC) + if (intr_count && (priority & GFP_LEVEL_MASK) != GFP_ATOMIC) { static int count = 0; if (++count < 5) {
| |