On Wed, Feb 07, 2007 at 01:30:20PM -0800, Andrew Morton wrote: > On Tue, 06 Feb 2007 14:19:54 -0800 > Sumant Patro <sumantp@xxxxxxxx> wrote: > > > Preallocate memory for ioctl processing. This is to avoid situations > > where ioctl fails for lack of memory (when system under heavy stress). > > The memory pool will have 8*4K, 4*8K and 1*64K memory chunks > > mutter. > > I suspect all this horror is due to stupidity in the DMA API. > > pci_alloc_consistent() just goes and assumes GFP_ATOMIC, whereas > the caller (megasas_mgmt_fw_ioctl) would have been perfectly happy > to use GFP_KERNEL. > > I bet this fixes it: but it's ugly as hell, why there is a much more trivial fix for it: simply use dma_alloc_coherent. - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
