From 39429c5e4a2c56a39c9a1c9bdad54431c63104b0 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 23 Mar 2012 16:36:45 -0400 Subject: new helper: ext2_image_size() ... implemented that way since the next commit will leave it almost alone in ext2_fs.h - most of the file (including struct ext2_super_block) is going to move to fs/ext2/ext2.h. Signed-off-by: Al Viro --- init/do_mounts_rd.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) (limited to 'init/do_mounts_rd.c') diff --git a/init/do_mounts_rd.c b/init/do_mounts_rd.c index 01f1306aa26e..6212586df29a 100644 --- a/init/do_mounts_rd.c +++ b/init/do_mounts_rd.c @@ -54,20 +54,19 @@ identify_ramdisk_image(int fd, int start_block, decompress_fn *decompressor) { const int size = 512; struct minix_super_block *minixsb; - struct ext2_super_block *ext2sb; struct romfs_super_block *romfsb; struct cramfs_super *cramfsb; struct squashfs_super_block *squashfsb; int nblocks = -1; unsigned char *buf; const char *compress_name; + unsigned long n; buf = kmalloc(size, GFP_KERNEL); if (!buf) return -ENOMEM; minixsb = (struct minix_super_block *) buf; - ext2sb = (struct ext2_super_block *) buf; romfsb = (struct romfs_super_block *) buf; cramfsb = (struct cramfs_super *) buf; squashfsb = (struct squashfs_super_block *) buf; @@ -150,12 +149,12 @@ identify_ramdisk_image(int fd, int start_block, decompress_fn *decompressor) } /* Try ext2 */ - if (ext2sb->s_magic == cpu_to_le16(EXT2_SUPER_MAGIC)) { + n = ext2_image_size(buf); + if (n) { printk(KERN_NOTICE "RAMDISK: ext2 filesystem found at block %d\n", start_block); - nblocks = le32_to_cpu(ext2sb->s_blocks_count) << - le32_to_cpu(ext2sb->s_log_block_size); + nblocks = n; goto done; } -- cgit v1.2.3-59-g8ed1b