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[PATCH] rework reserved major handling

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Several people have reported failures in dynamic major device number handling
due to the recent changes in there to avoid handing out the local/experimental
majors.

Rolf reports that this is due to a gcc-4.1.0 bug.

The patch refactors that code a lot in an attempt to provoke the compiler into
behaving.

Cc: Rolf Eike Beer <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Andrew Morton 2007-02-20 13:57:48 -08:00 • committed by Linus Torvalds
commit b446b60e4e
4 changed files with 19 additions and 13 deletions
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9
block/genhd.c
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@ -5,6 +5,7 @@
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/genhd.h>
#include <linux/kdev_t.h>
#include <linux/kernel.h>
#include <linux/blkdev.h>
#include <linux/init.h>
@ -61,13 +62,7 @@ int register_blkdev(unsigned int major, const char *name)
/* temporary */
if (major == 0) {
for (index = ARRAY_SIZE(major_names)-1; index > 0; index--) {
/*
* Disallow the LANANA-assigned LOCAL/EXPERIMENTAL
* majors
*/
if ((60 <= index && index <= 63) ||
(120 <= index && index <= 127) ||
(240 <= index && index <= 254))
if (is_lanana_major(index))
continue;
if (major_names[index] == NULL)
break;