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    Subject[PATCH 14/27] r-o-bind-mounts-elevate-write-count-for-file_update_time
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    Date


    Signed-off-by: Dave Hansen <haveblue@us.ibm.com>
    Acked-by: Christoph Hellwig <hch@infradead.org>
    Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
    ---

    linux-2.6.git-dave/fs/inode.c | 13 ++++++++++++-
    1 file changed, 12 insertions(+), 1 deletion(-)

    diff -puN fs/inode.c~r-o-bind-mounts-elevate-write-count-for-file_update_time fs/inode.c
    --- linux-2.6.git/fs/inode.c~r-o-bind-mounts-elevate-write-count-for-file_update_time 2007-11-01 14:46:13.000000000 -0700
    +++ linux-2.6.git-dave/fs/inode.c 2007-11-01 14:46:13.000000000 -0700
    @@ -1263,10 +1263,19 @@ void file_update_time(struct file *file)
    struct inode *inode = file->f_path.dentry->d_inode;
    struct timespec now;
    int sync_it = 0;
    + int err = 0;

    if (IS_NOCMTIME(inode))
    return;
    - if (IS_RDONLY(inode))
    + /*
    + * Ideally, we want to guarantee that 'f_vfsmnt'
    + * is non-NULL here. But, NFS exports need to
    + * be fixed up before we can do that. So, check
    + * it for now. - Dave Hansen
    + */
    + if (file->f_vfsmnt)
    + err = mnt_want_write(file->f_vfsmnt);
    + if (err)
    return;

    now = current_fs_time(inode->i_sb);
    @@ -1282,6 +1291,8 @@ void file_update_time(struct file *file)

    if (sync_it)
    mark_inode_dirty_sync(inode);
    + if (file->f_vfsmnt)
    + mnt_drop_write(file->f_vfsmnt);
    }

    EXPORT_SYMBOL(file_update_time);
    _
    -
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