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| author | Zdenek Pavlas <pavlas@nextra.cz> | 2006-03-25 03:07:49 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-25 08:22:57 -0800 |
| commit | 340e48e662dc9bf79cdd9dc755cb2eb2bad580cd (patch) | |
| tree | dcd67a41171101d47cf9afa77f642fc2b3efe172 | |
| parent | 05eeae208d08a05a6980cf2ff61f02843c0955fd (diff) | |
| download | op-kernel-dev-340e48e662dc9bf79cdd9dc755cb2eb2bad580cd.zip op-kernel-dev-340e48e662dc9bf79cdd9dc755cb2eb2bad580cd.tar.gz | |
[PATCH] BLK_DEV_INITRD: do not require BLK_DEV_RAM=y
Initramfs initrd images do not need a ramdisk device, so remove this
restriction in Kconfig. BLK_DEV_RAM=n saves about 13k on i386. Also
without ramdisk device there's no need for "dry run", so initramfs unpacks
much faster.
People using cramfs, squashfs, or gzipped ext2/minix initrd images are
probably smart enough not to turn off ramdisk support by accident.
Cc: Al Viro <viro@ftp.linux.org.uk>
Cc: Christoph Hellwig <hch@lst.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | drivers/block/Kconfig | 1 | ||||
| -rw-r--r-- | init/initramfs.c | 10 |
2 files changed, 10 insertions, 1 deletions
diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig index 8b13316..e57ac5a 100644 --- a/drivers/block/Kconfig +++ b/drivers/block/Kconfig @@ -401,7 +401,6 @@ config BLK_DEV_RAM_SIZE config BLK_DEV_INITRD bool "Initial RAM disk (initrd) support" - depends on BLK_DEV_RAM=y help The initial RAM disk is a RAM disk that is loaded by the boot loader (loadlin or lilo) and that is mounted as root before the normal boot diff --git a/init/initramfs.c b/init/initramfs.c index 637344b..77b934c 100644 --- a/init/initramfs.c +++ b/init/initramfs.c @@ -506,6 +506,7 @@ void __init populate_rootfs(void) panic(err); #ifdef CONFIG_BLK_DEV_INITRD if (initrd_start) { +#ifdef CONFIG_BLK_DEV_RAM int fd; printk(KERN_INFO "checking if image is initramfs..."); err = unpack_to_rootfs((char *)initrd_start, @@ -525,6 +526,15 @@ void __init populate_rootfs(void) sys_close(fd); free_initrd(); } +#else + printk(KERN_INFO "Unpacking initramfs..."); + err = unpack_to_rootfs((char *)initrd_start, + initrd_end - initrd_start, 0); + if (err) + panic(err); + printk(" done\n"); + free_initrd(); +#endif } #endif } |
