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    SubjectRe: [PATCH,RFC] initrd vs. BLKFLSBUF
    Date
    I'm posting this again hoping that it'll get incorporated into the kernel.

    I've tested the patch against 2.4.0-test12-pre8, and it's working fine.

    Thanks,
    Jeff
    [ jchua@fedex.com ]
    ----- Original Message -----
    From: "Werner Almesberger" <Werner.Almesberger@epfl.ch>
    To: <viro@math.psu.edu>
    Cc: <jchua@fedex.com>; <linux-kernel@vger.kernel.org>
    Sent: Monday, November 20, 2000 11:21 AM
    Subject: [PATCH,RFC] initrd vs. BLKFLSBUF


    Hi Al,

    Jeff Chua reported a while ago that BLKFLSBUF returns EBUSY on a RAM disk
    that was obtained via initrd. I think the problem is that the effect of
    the blkdev_open(out_inode, ...) in drivers/block/rd.c:rd_load_image is
    not undone at the end. I've attached a patch for 2.4.0-test11-pre7 that
    seems to solve the problem. Since I'm not quite sure I understand the
    reference counting rules there, I would appreciate your comment.

    Thanks,
    - Werner

    ---------------------------------- cut
    here -----------------------------------

    --- linux.orig/drivers/block/rd.c Mon Nov 20 02:07:47 2000
    +++ linux/drivers/block/rd.c Mon Nov 20 04:03:42 2000
    @@ -690,6 +690,7 @@
    done:
    if (infile.f_op->release)
    infile.f_op->release(inode, &infile);
    + blkdev_put(out_inode->i_bdev, BDEV_FILE);
    set_fs(fs);
    return;
    free_inodes: /* free inodes on error */
    --
    _________________________________________________________________________
    / Werner Almesberger, ICA, EPFL, CH Werner.Almesberger@epfl.ch /
    /_IN_N_032__Tel_+41_21_693_6621__Fax_+41_21_693_6610_____________________/

    -
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