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    Subject[PATCH 02/11] uml ubd driver: document some struct fields
    Date
    From: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>

    Add documentation about some fields in struct ubd, whose meaning is non-obvious
    due to struct names (should change names altogether, I agree).

    Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
    ---

    arch/um/drivers/ubd_kern.c | 5 ++++-
    1 files changed, 4 insertions(+), 1 deletions(-)

    diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
    index 984b5da..e034ca4 100644
    --- a/arch/um/drivers/ubd_kern.c
    +++ b/arch/um/drivers/ubd_kern.c
    @@ -150,8 +150,9 @@ #endif
    static struct openflags global_openflags = OPEN_FLAGS;

    struct cow {
    - /* This is the backing file, actually */
    + /* backing file name */
    char *file;
    + /* backing file fd */
    int fd;
    unsigned long *bitmap;
    unsigned long bitmap_len;
    @@ -160,6 +161,8 @@ struct cow {
    };

    struct ubd {
    + /* name (and fd, below) of the file opened for writing, either the
    + * backing or the cow file. */
    char *file;
    int count;
    int fd;
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