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    SubjectRe: [PATCH] 2.5.5-pre1, allow RAM disk to be build
    From: Dave Jones <davej@suse.de>

    > On Sun, Feb 17, 2002 at 02:07:35AM +0800, Rudmer van Dijk wrote:
    > > since 2.5.x (can't remember version correctly) the setup for RAM disk changed and I could not build it anymore into the kernel due to compilation errors.
    > > In the latest prepatch (2.5.5-pre1) this is still not fixed. I am using the following patch to fix this and it works from 2.5.x upto 2.5.5-pre1 without any problems.
    >
    > The real fix I think is to fix include/linux/blk.h
    > setup.c uses it inside CONFIG_BLK_DEV_RAM, but blk.h
    > only defines it with CONFIG_BLK_DEV_INITRD
    >
    It was a quick fix because I thought someone else was going to fix it...

    How about the following patch?
    kernel builds and boots with patch (with CONFIG_BLK_DEV_INITRD disabled).

    I think this is unrelated but I suddenly got the following messages while trying to build another kernel:
    Feb 18 00:02:51 frodo kernel: hdc: lost interrupt
    Feb 18 00:03:31 frodo last message repeated 4 times
    Feb 18 00:04:31 frodo last message repeated 6 times
    Feb 18 00:05:31 frodo last message repeated 6 times
    Feb 18 00:06:31 frodo last message repeated 6 times

    now my some files (including gcc) are screwed and I cannot test this patch with CONFIG_BLK_DEV_INITRD enabled...

    Rudmer

    --
    frodo:/home/rudmer/linux-2.5.5-pre1 # diff -uN include/linux/blk.h.orig include/linux/blk.h
    --- include/linux/blk.h.orig Sun Feb 17 20:27:28 2002
    +++ include/linux/blk.h Sun Feb 17 19:49:27 2002
    @@ -16,18 +16,24 @@
    extern void set_device_ro(kdev_t dev,int flag);
    extern void add_blkdev_randomness(int major);

    +#ifdef CONFIG_BLK_DEV_RAM
    +
    +extern int rd_doload; /* 1 = load ramdisk, 0 = don't load */
    +extern int rd_prompt; /* 1 = prompt for ramdisk, 0 = don't prompt */
    +extern int rd_image_start; /* starting block # of image */
    +
    #ifdef CONFIG_BLK_DEV_INITRD

    #define INITRD_MINOR 250 /* shouldn't collide with /dev/ram* too soon ... */

    extern unsigned long initrd_start,initrd_end;
    extern int initrd_below_start_ok; /* 1 if it is not an error if initrd_start < memory_start */
    -extern int rd_doload; /* 1 = load ramdisk, 0 = don't load */
    -extern int rd_prompt; /* 1 = prompt for ramdisk, 0 = don't prompt */
    -extern int rd_image_start; /* starting block # of image */
    void initrd_init(void);

    +#endif /* CONFIG_BLK_DEV_INITRD */
    +
    #endif
    +
    /*
    * end_request() and friends. Must be called with the request queue spinlock
    * acquired. All functions called within end_request() _must_be_ atomic.
    --
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