From 91716322d834cba34f4a7ed5e4a39673eb90862b Mon Sep 17 00:00:00 2001 From: Matt Fleming Date: Mon, 22 Oct 2012 15:51:45 +0100 Subject: [PATCH] efivarfs: Add unique magic number Using pstore's superblock magic number is no doubt going to cause problems in the future. Give efivarfs its own magic number. Acked-by: Jeremy Kerr Signed-off-by: Matt Fleming --- drivers/firmware/efivars.c | 2 +- include/uapi/linux/magic.h | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c index 2c044343c99b..3b0cf9acb504 100644 --- a/drivers/firmware/efivars.c +++ b/drivers/firmware/efivars.c @@ -991,7 +991,7 @@ int efivarfs_fill_super(struct super_block *sb, void *data, int silent) sb->s_maxbytes = MAX_LFS_FILESIZE; sb->s_blocksize = PAGE_CACHE_SIZE; sb->s_blocksize_bits = PAGE_CACHE_SHIFT; - sb->s_magic = PSTOREFS_MAGIC; + sb->s_magic = EFIVARFS_MAGIC; sb->s_op = &efivarfs_ops; sb->s_time_gran = 1; diff --git a/include/uapi/linux/magic.h b/include/uapi/linux/magic.h index e15192cb9cf4..12f68c7ceba6 100644 --- a/include/uapi/linux/magic.h +++ b/include/uapi/linux/magic.h @@ -27,6 +27,7 @@ #define ISOFS_SUPER_MAGIC 0x9660 #define JFFS2_SUPER_MAGIC 0x72b6 #define PSTOREFS_MAGIC 0x6165676C +#define EFIVARFS_MAGIC 0xde5e81e4 #define MINIX_SUPER_MAGIC 0x137F /* minix v1 fs, 14 char names */ #define MINIX_SUPER_MAGIC2 0x138F /* minix v1 fs, 30 char names */ -- 2.34.1