[lkml]   [2001]   [Dec]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: ramdisk corruption problems - was: RE: pivot_root and initrd kern el panic woes

    On Thu, 20 Dec 2001, Linus Torvalds wrote:

    > The problem is that having buffers doesn't necessarily always mean that
    > they are valid, nor that _all_ of them are valid.
    > Also, if the ramdisk "readpage" code is wrong, then so is the
    > "prepare_write" code. They share the same logic, which basically says
    > that "if the page isn't up-to-date, then it is zero". Which is always
    > true for normal read/write accesses, but as you found out it's not true
    > when parts of the page have been accessed by filesystems through the
    > buffers.

    AFAICS, it's nastier than that. What's to stop buffer_heads to be
    freed under memory pressure?

    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to
    More majordomo info at
    Please read the FAQ at

     \ /
      Last update: 2005-03-22 13:14    [W:0.021 / U:30.460 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site