Date: Thu, 16 Aug 2018 07:59:23 +0100 From: John Baldwin <jhb@FreeBSD.org> To: Warner Losh <imp@bsdimp.com>, Ian Lepore <ian@freebsd.org> Cc: Toomas Soome <tsoome@freebsd.org>, src-committers <src-committers@freebsd.org>, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r337878 - head/stand/i386/libi386 Message-ID: <05b36083-9f4d-658e-ab39-e8c317d01db7@FreeBSD.org> In-Reply-To: <CANCZdfpR_v5_ES=XhpKK6GD6Hd7zneObwKQwf40P0aDLxWh=WA@mail.gmail.com> References: <201808152225.w7FMP5J2018006@repo.freebsd.org> <1534372134.1466.21.camel@freebsd.org> <CANCZdfpR_v5_ES=XhpKK6GD6Hd7zneObwKQwf40P0aDLxWh=WA@mail.gmail.com>
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On 8/15/18 11:59 PM, Warner Losh wrote: > > > On Wed, Aug 15, 2018 at 4:28 PM, Ian Lepore <ian@freebsd.org <mailto:ian@freebsd.org>> wrote: > > On Wed, 2018-08-15 at 22:25 +0000, Toomas Soome wrote: > > Author: tsoome > > Date: Wed Aug 15 22:25:05 2018 > > New Revision: 337878 > > URL: https://svnweb.freebsd.org/changeset/base/337878 <https://svnweb.freebsd.org/changeset/base/337878>; > > > > Log: > > libi386: remove bd_read() and bd_write() wrappers > > > > Those wroappers are nice, but do not really add much value. > > > > Modified: > > head/stand/i386/libi386/biosdisk.c > > > > Modified: head/stand/i386/libi386/biosdisk.c > > ===================================================================== > > ========= > > --- head/stand/i386/libi386/biosdisk.c Wed Aug 15 21:47:03 > > 2018 (r337877) > > +++ head/stand/i386/libi386/biosdisk.c Wed Aug 15 22:25:05 > > 2018 (r337878) > > @@ -94,10 +94,7 @@ static int nbdinfo = 0; > > > > static void bd_io_workaround(struct disk_devdesc *dev); > > > > -static int bd_read(struct disk_devdesc *dev, daddr_t dblk, int blks, > > - caddr_t dest); > > -static int bd_write(struct disk_devdesc *dev, daddr_t dblk, int > > blks, > > - caddr_t dest); > > +static int bd_io(struct disk_devdesc *, daddr_t, int, caddr_t, int); > > static int bd_int13probe(struct bdinfo *bd); > > > > static int bd_init(void); > > @@ -506,7 +503,7 @@ bd_realstrategy(void *devdata, int rw, daddr_t > > dblk, s > > case F_READ: > > DEBUG("read %d from %lld to %p", blks, dblk, buf); > > > > - if (blks && (rc = bd_read(dev, dblk, blks, buf))) { > > + if (blks && (rc = bd_io(dev, dblk, blks, buf, 0))) { > > /* Filter out floppy controller errors */ > > if (BD(dev).bd_flags != BD_FLOPPY || rc != > > 0x20) { > > printf("read %d from %lld to %p, > > error: 0x%x\n", > > @@ -518,7 +515,7 @@ bd_realstrategy(void *devdata, int rw, daddr_t > > dblk, s > > case F_WRITE : > > DEBUG("write %d from %lld to %p", blks, dblk, buf); > > > > - if (blks && bd_write(dev, dblk, blks, buf)) { > > + if (blks && bd_io(dev, dblk, blks, buf, 1)) { > > DEBUG("write error"); > > return (EIO); > > } > > @@ -713,20 +710,6 @@ bd_io(struct disk_devdesc *dev, daddr_t dblk, > > int blks > > } > > > > return (0); > > -} > > - > > -static int > > -bd_read(struct disk_devdesc *dev, daddr_t dblk, int blks, caddr_t > > dest) > > -{ > > - > > - return (bd_io(dev, dblk, blks, dest, 0)); > > -} > > - > > -static int > > -bd_write(struct disk_devdesc *dev, daddr_t dblk, int blks, caddr_t > > dest) > > -{ > > - > > - return (bd_io(dev, dblk, blks, dest, 1)); > > } > > > > /* > > > > This would be a more satisfying change if there were something like > > #define BD_RD 0 > #define BD_WR 1 > > so that it was clear at a glance what a bd_io() call is doing. > > > I think that's a good idea... Arguably the bd_read/write wrappers were even clearer (and there purpose was readability in that case). -- John Baldwin
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