From ae81230686282af745ebb7a74c0332349cb9131a Mon Sep 17 00:00:00 2001 From: Aditya Kali Date: Tue, 24 May 2011 19:00:39 -0400 Subject: [PATCH] ext4: reserve inodes and feature code for 'quota' feature I am working on patch to add quota as a built-in feature for ext4 filesystem. The implementation is based on the design given at https://ext4.wiki.kernel.org/index.php/Design_For_1st_Class_Quota_in_Ext4. This patch reserves the inode numbers 3 and 4 for quota purposes and also reserves EXT4_FEATURE_RO_COMPAT_QUOTA feature code. Signed-off-by: Aditya Kali Signed-off-by: "Theodore Ts'o" --- fs/ext4/ext4.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index c0c56c9d5933..2bc4c21f1d26 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -209,6 +209,8 @@ struct ext4_io_submit { */ #define EXT4_BAD_INO 1 /* Bad blocks inode */ #define EXT4_ROOT_INO 2 /* Root inode */ +#define EXT4_USR_QUOTA_INO 3 /* User quota inode */ +#define EXT4_GRP_QUOTA_INO 4 /* Group quota inode */ #define EXT4_BOOT_LOADER_INO 5 /* Boot loader inode */ #define EXT4_UNDEL_DIR_INO 6 /* Undelete directory inode */ #define EXT4_RESIZE_INO 7 /* Reserved group descriptors inode */ @@ -1344,6 +1346,7 @@ static inline void ext4_clear_state_flags(struct ext4_inode_info *ei) #define EXT4_FEATURE_RO_COMPAT_GDT_CSUM 0x0010 #define EXT4_FEATURE_RO_COMPAT_DIR_NLINK 0x0020 #define EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE 0x0040 +#define EXT4_FEATURE_RO_COMPAT_QUOTA 0x0100 #define EXT4_FEATURE_INCOMPAT_COMPRESSION 0x0001 #define EXT4_FEATURE_INCOMPAT_FILETYPE 0x0002 -- 2.34.1