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[PATCH] remove protection of LANANA-reserved majors

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Revert all this.  It can cause device-mapper to receive a different major from
earlier kernels and it turns out that the Amanda backup program (via GNU tar,
apparently) checks major numbers on files when performing incremental backups.

Which is a bit broken of Amanda (or tar), but this feature isn't important
enough to justify the churn.

Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Andrew Morton
2007-04-04 19:08:22 -07:00
committed by Linus Torvalds
parent c75fd0ee6e
commit 2363cc0264
4 changed files with 0 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
block/genhd.c
View File

@@ -62,8 +62,6 @@ int register_blkdev(unsigned int major, const char *name)
/* temporary */ /* temporary */
if (major == 0) { if (major == 0) {
for (index = ARRAY_SIZE(major_names)-1; index > 0; index--) { for (index = ARRAY_SIZE(major_names)-1; index > 0; index--) {
if (is_lanana_major(index))
continue;
if (major_names[index] == NULL) if (major_names[index] == NULL)
break; break;
} }

14
drivers/base/core.c
View File

@@ -27,20 +27,6 @@
int (*platform_notify)(struct device * dev) = NULL; int (*platform_notify)(struct device * dev) = NULL;
int (*platform_notify_remove)(struct device * dev) = NULL; int (*platform_notify_remove)(struct device * dev) = NULL;
/*
* Detect the LANANA-assigned LOCAL/EXPERIMENTAL majors
*/
bool is_lanana_major(unsigned int major)
{
if (major >= 60 && major <= 63)
return 1;
if (major >= 120 && major <= 127)
return 1;
if (major >= 240 && major <= 254)
return 1;
return 0;
}
/* /*
* sysfs bindings for devices. * sysfs bindings for devices.
*/ */

2
fs/char_dev.c
View File

@@ -109,8 +109,6 @@ __register_chrdev_region(unsigned int major, unsigned int baseminor,
/* temporary */ /* temporary */
if (major == 0) { if (major == 0) {
for (i = ARRAY_SIZE(chrdevs)-1; i > 0; i--) { for (i = ARRAY_SIZE(chrdevs)-1; i > 0; i--) {
if (is_lanana_major(i))
continue;
if (chrdevs[i] == NULL) if (chrdevs[i] == NULL)
break; break;
} }

2
include/linux/kdev_t.h
View File

@@ -87,8 +87,6 @@ static inline unsigned sysv_minor(u32 dev)
return dev & 0x3ffff; return dev & 0x3ffff;
} }
bool is_lanana_major(unsigned int major);
#else /* __KERNEL__ */ #else /* __KERNEL__ */
/* /*