Re: /dev/root: which approach ? [PATCH]

From: Mika Penttilä
Date: Wed Mar 10 2004 - 15:17:11 EST


My question to the FS hackers: which one is the preferred approach?


dev_root_alias.patch

--- linux-2.6.4-rc2-mm1.orig/fs/block_dev.c 2004-03-09 17:14:32.000000000 +0100
+++ linux-2.6.4-rc2-mm1/fs/block_dev.c 2004-03-10 16:39:30.000000000 +0100
@@ -338,6 +338,16 @@ struct block_device *bdget(dev_t dev)
{
struct block_device *bdev;
struct inode *inode;
+ struct vfsmount *mnt;
+
+ /* See if device is the /dev/root alias. */
+ if (dev == MKDEV(4, 1)) {
+ read_lock(&current->fs->lock);
+ mnt = mntget(current->fs->rootmnt);
+ dev = mnt->mnt_sb->s_dev;
+ mntput(mnt);
+ read_unlock(&current->fs->lock);
+ }

inode = iget5_locked(bd_mnt->mnt_sb, hash(dev),
bdev_test, bdev_set, &dev);


what is this 4,1, a tty???

--Mika


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