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initramfs: fix populate_initrd_image() section mismatch 

With gcc-4.6.3:

    WARNING: vmlinux.o(.text.unlikely+0x140): Section mismatch in reference from the function populate_initrd_image() to the variable .init.ramfs.info:__initramfs_size
    The function populate_initrd_image() references
    the variable __init __initramfs_size.
    This is often because populate_initrd_image lacks a __init
    annotation or the annotation of __initramfs_size is wrong.

    WARNING: vmlinux.o(.text.unlikely+0x14c): Section mismatch in reference from the function populate_initrd_image() to the function .init.text:unpack_to_rootfs()
    The function populate_initrd_image() references
    the function __init unpack_to_rootfs().
    This is often because populate_initrd_image lacks a __init
    annotation or the annotation of unpack_to_rootfs is wrong.

    WARNING: vmlinux.o(.text.unlikely+0x198): Section mismatch in reference from the function populate_initrd_image() to the function .init.text:xwrite()
    The function populate_initrd_image() references
    the function __init xwrite().
    This is often because populate_initrd_image lacks a __init
    annotation or the annotation of xwrite is wrong.

Indeed, if the compiler decides not to inline populate_initrd_image(), a
warning is generated.

Fix this by adding the missing __init annotations.

Link: http://lkml.kernel.org/r/20190617074340.12779-1-geert@linux-m68k.org
Fixes: 7c184ecd26 ("initramfs: factor out a helper to populate the initrd image")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Geert Uytterhoeven 2019-06-28 12:07:03 -07:00 committed by Linus Torvalds
parent 432b1de0de
commit 4ada1e8100
1 changed files with 2 additions and 2 deletions
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4
init/initramfs.c
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@ -617,7 +617,7 @@ static inline void clean_rootfs(void)
#endif /* CONFIG_BLK_DEV_RAM */ #endif /* CONFIG_BLK_DEV_RAM */
#ifdef CONFIG_BLK_DEV_RAM #ifdef CONFIG_BLK_DEV_RAM
static void populate_initrd_image(char *err) static void __init populate_initrd_image(char *err)
{ {
ssize_t written; ssize_t written;
int fd; int fd;
@ -637,7 +637,7 @@ static void populate_initrd_image(char *err)
ksys_close(fd); ksys_close(fd);
} }
#else #else
static void populate_initrd_image(char *err) static void __init populate_initrd_image(char *err)
{ {
printk(KERN_EMERG "Initramfs unpacking failed: %s\n", err); printk(KERN_EMERG "Initramfs unpacking failed: %s\n", err);
} }