Commit afef7889 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Linus Torvalds

initramfs: cleanup populate_rootfs

The code for kernels that support ramdisks or not is mostly the same.
Unify it by using an IS_ENABLED for the info message, and moving the error
message into a stub for populate_initrd_image.

[cai@lca.pw: fix a compilation error]
  Link: http://lkml.kernel.org/r/20190328014806.36375-1-cai@lca.pw
Link: http://lkml.kernel.org/r/20190213174621.29297-6-hch@lst.deSigned-off-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarQian Cai <cai@lca.pw>
Acked-by: default avatarMike Rapoport <rppt@linux.ibm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>	[arm64]
Cc: Geert Uytterhoeven <geert@linux-m68k.org>	[m68k]
Cc: Steven Price <steven.price@arm.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 7c184ecd
...@@ -595,7 +595,11 @@ static void __init clean_rootfs(void) ...@@ -595,7 +595,11 @@ static void __init clean_rootfs(void)
ksys_close(fd); ksys_close(fd);
kfree(buf); kfree(buf);
} }
#endif #else
static inline void clean_rootfs(void)
{
}
#endif /* CONFIG_BLK_DEV_RAM */
#ifdef CONFIG_BLK_DEV_RAM #ifdef CONFIG_BLK_DEV_RAM
static void populate_initrd_image(char *err) static void populate_initrd_image(char *err)
...@@ -617,6 +621,11 @@ static void populate_initrd_image(char *err) ...@@ -617,6 +621,11 @@ static void populate_initrd_image(char *err)
written, initrd_end - initrd_start); written, initrd_end - initrd_start);
ksys_close(fd); ksys_close(fd);
} }
#else
static void populate_initrd_image(char *err)
{
printk(KERN_EMERG "Initramfs unpacking failed: %s\n", err);
}
#endif /* CONFIG_BLK_DEV_RAM */ #endif /* CONFIG_BLK_DEV_RAM */
static int __init populate_rootfs(void) static int __init populate_rootfs(void)
...@@ -625,28 +634,22 @@ static int __init populate_rootfs(void) ...@@ -625,28 +634,22 @@ static int __init populate_rootfs(void)
char *err = unpack_to_rootfs(__initramfs_start, __initramfs_size); char *err = unpack_to_rootfs(__initramfs_start, __initramfs_size);
if (err) if (err)
panic("%s", err); /* Failed to decompress INTERNAL initramfs */ panic("%s", err); /* Failed to decompress INTERNAL initramfs */
/* If available load the bootloader supplied initrd */
if (initrd_start && !IS_ENABLED(CONFIG_INITRAMFS_FORCE)) { if (!initrd_start || IS_ENABLED(CONFIG_INITRAMFS_FORCE))
#ifdef CONFIG_BLK_DEV_RAM goto done;
if (IS_ENABLED(CONFIG_BLK_DEV_RAM))
printk(KERN_INFO "Trying to unpack rootfs image as initramfs...\n"); printk(KERN_INFO "Trying to unpack rootfs image as initramfs...\n");
err = unpack_to_rootfs((char *)initrd_start, else
initrd_end - initrd_start); printk(KERN_INFO "Unpacking initramfs...\n");
if (!err)
goto done;
err = unpack_to_rootfs((char *)initrd_start, initrd_end - initrd_start);
if (err) {
clean_rootfs(); clean_rootfs();
populate_initrd_image(err); populate_initrd_image(err);
done:
/* empty statement */;
#else
printk(KERN_INFO "Unpacking initramfs...\n");
err = unpack_to_rootfs((char *)initrd_start,
initrd_end - initrd_start);
if (err)
printk(KERN_EMERG "Initramfs unpacking failed: %s\n", err);
#endif
} }
done:
/* /*
* If the initrd region is overlapped with crashkernel reserved region, * If the initrd region is overlapped with crashkernel reserved region,
* free only memory that is not part of crashkernel region. * free only memory that is not part of crashkernel region.
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment