On Thu, 3 May 2007, Andrew Morton wrote:
> On Sat, 28 Apr 2007 06:23:54 -0400 (EDT) "Robert P. J. Day" <[EMAIL
> PROTECTED]> wrote:
>
> > Replace the MAJOR() macro invocation with a call to the inline
> > imajor() routine.
> >
> > Signed-off-by: Robert P. J. Day <[EMAIL PROTECTED]>
> >
> > ---
> >
> > diff --git a/drivers/block/loop.c b/drivers/block/loop.c
> > index 6b5b642..08da15b 100644
> > --- a/drivers/block/loop.c
> > +++ b/drivers/block/loop.c
> > @@ -710,7 +710,7 @@ static inline int is_loop_device(struct file *file)
> > {
> > struct inode *i = file->f_mapping->host;
> >
> > - return i && S_ISBLK(i->i_mode) && MAJOR(i->i_rdev) == LOOP_MAJOR;
> > + return i && S_ISBLK(i->i_mode) && imajor(i) == LOOP_MAJOR;
> > }
>
> there's no runtime change, and I count a couple hundred MAJORs in
> the tree.
>
> I don't want to receive 200 one-line patches please. If you're
> going to do this then please do decent-sized per-subsystem patches
> and see if you can persuade the subsystem maintainers to take them
> directly.
you misunderstand the point of that patch. it's not to replace all
instances of MAJOR(), only those that are being used in specifically
that context -- to extract the major (or minor) number from an inode,
and there's a *very* small number of those:
$ grep -Er "(MINOR|MAJOR).*i_rdev" *
arch/sh/boards/landisk/landisk_pwb.c: minor = MINOR(inode->i_rdev);
arch/sh/boards/landisk/landisk_pwb.c: minor = MINOR(inode->i_rdev);
drivers/block/loop.c: return i && S_ISBLK(i->i_mode) && MAJOR(i->i_rdev) ==
LOOP_MAJOR;
drivers/media/video/ivtv/ivtv-fileops.c: int minor =
MINOR(inode->i_rdev);
include/linux/fs.h: return MINOR(inode->i_rdev);
include/linux/fs.h: return MAJOR(inode->i_rdev);
sound/oss/au1550_ac97.c: int minor = MINOR(inode->i_rdev);
it's just standardizing on using the imajor() and iminor() inlines
defined in include/linux/fs.h.
rday
--
========================================================================
Robert P. J. Day
Linux Consulting, Training and Annoying Kernel Pedantry
Waterloo, Ontario, CANADA
http://fsdev.net/wiki/index.php?title=Main_Page
========================================================================
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