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    Subject[PATCH 2.6.19-rc3] VFS: missing unused dentry in prune_dcache()
    Andrew,

    could you please use this patch instead of
    missing-unused-dentry-in-prune_dcache.patch

    As far as I understand David Howells have not any objections

    Thank you,
    Vasily Averin

    ---
    VFS: missing unused dentry in prune_dcache()
    From: Vasily Averin <vvs@sw.ru>

    If we cannot delete dentry we should insert it back to the dentry_unused list.
    To prevent cycle and do not blocks prune_dcache() call from
    shrink_dcache_memory() we adding this dentry to head of list.

    Signed-off-by: Vasily Averin <vvs@sw.ru>

    --- linux-2.6.19-rc3/fs/dcache.c.prdch 2006-10-25 16:09:19.000000000 +0400
    +++ linux-2.6.19-rc3/fs/dcache.c 2006-10-26 15:14:51.000000000 +0400
    @@ -478,11 +478,9 @@ static void prune_dcache(int count, stru
    up_read(s_umount);
    }
    spin_unlock(&dentry->d_lock);
    - /* Cannot remove the first dentry, and it isn't appropriate
    - * to move it to the head of the list, so give up, and try
    - * later
    - */
    - break;
    + /* Inserting dentry to tail of the list leads to cycle */
    + list_add(&dentry->d_lru, &dentry_unused);
    + dentry_stat.nr_unused++;
    }
    spin_unlock(&dcache_lock);
    }
    -
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