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[PATCH] md: remove MAX_MD_DEVS which is an arbitrary limit

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Once upon a time we needed to fixed limit to the number of md devices,
probably because we preallocated some array.  This need no longer exists, but
we still have an arbitrary limit.

So remove MAX_MD_DEVS and allow as many devices as we can fit into the 'minor'
part of a device number.

Also remove some useless noise at init time (which reports MAX_MD_DEVS) and
remove MD_THREAD_NAME_MAX which hasn't been used for a while.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
NeilBrown
2006-10-03 01:15:59 -07:00
committed by Linus Torvalds
parent d33a56d363
commit e8703fe1f5
3 changed files with 18 additions and 28 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
init/do_mounts_md.c
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@ -20,7 +20,7 @@ static struct {
int level;
int chunk;
char *device_names;
} md_setup_args[MAX_MD_DEVS] __initdata;
} md_setup_args[256] __initdata;
static int md_setup_ents __initdata;
@ -61,10 +61,6 @@ static int __init md_setup(char *str)
return 0;
}
str1 = str;
if (minor >= MAX_MD_DEVS) {
printk(KERN_WARNING "md: md=%d, Minor device number too high.\n", minor);
return 0;
}
for (ent=0 ; ent< md_setup_ents ; ent++)
if (md_setup_args[ent].minor == minor &&
md_setup_args[ent].partitioned == partitioned) {
@ -72,7 +68,7 @@ static int __init md_setup(char *str)
"Replacing previous definition.\n", partitioned?"d":"", minor);
break;
}
if (ent >= MAX_MD_DEVS) {
if (ent >= ARRAY_SIZE(md_setup_args)) {
printk(KERN_WARNING "md: md=%s%d - too many md initialisations\n", partitioned?"d":"", minor);
return 0;
}