Hi erverbody! What about your opinion? I run "scripts/get_maintainer.pl -f init/", but it displays no maintainer. So this time, I added all people the result listed and added famous Linus Torvalds.
This patch is useful and no harmful. -------- Original Message -------- Subject: [PATCH 1/1] init:add boot option "initramfs_packnum" Date: Tue, 11 Nov 2014 09:42:14 +0800 From: Zhen Lei <[email protected]> To: Andrew Morton <[email protected]>, Yinghai Lu <[email protected]>, Mark Rustad <[email protected]>, linux-kernel <[email protected]> CC: Zefan Li <[email protected]>, Xinwei Hu <[email protected]>, Zhen Lei <[email protected]> During the development phase, we usually enlarge initrd-end to reserve more memory than the initfs zip exactly occupied. Then we can easily add or delete files in zip package, without generate fdt again and again. But unfortunately, if too many zeros followed initfs zip, it will take a long time to break the loop. while (!message && len) { ... ... if (!*buf) { buf++; ... ... continue; } So, use the boot option "initramfs_packnum" to specify how many zip packages in each initrd area. When the specified number of packages decompressed in one area, immediately terminate the loop. Have no impact on current use by default. Signed-off-by: Zhen Lei <[email protected]> --- init/initramfs.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/init/initramfs.c b/init/initramfs.c index ad1bd77..356764f 100644 --- a/init/initramfs.c +++ b/init/initramfs.c @@ -446,12 +446,24 @@ static unsigned long my_inptr; /* index of next byte to be processed in inbuf */ #include <linux/decompress/generic.h> +/* zero and negative means packages number is unlimited */ +static int initramfs_packnum __initdata; + +static __init int setup_initramfs_packnum(char *str) +{ + get_option(&str, &initramfs_packnum); + + return 0; +} +early_param("initramfs_packnum", setup_initramfs_packnum); + static char * __init unpack_to_rootfs(char *buf, unsigned long len) { long written; decompress_fn decompress; const char *compress_name; static __initdata char msg_buf[64]; + int packnum = initramfs_packnum; header_buf = kmalloc(110, GFP_KERNEL); symlink_buf = kmalloc(PATH_MAX + N_ALIGN(PATH_MAX) + 1, GFP_KERNEL); @@ -500,6 +512,9 @@ static char * __init unpack_to_rootfs(char *buf, unsigned long len) this_header = saved_offset + my_inptr; buf += my_inptr; len -= my_inptr; + + if (!(--packnum)) + break; } dir_utime(); kfree(name_buf); -- 1.8.0 . -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
