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Commit 436bd75e authored by Theodore Ts'o's avatar Theodore Ts'o
Browse files

Define/reserve new ext4 superblock fields 



Signed-off-by: default avatar"Theodore Ts'o" <tytso@mit.edu>
parent 315054f0

include/linux/ext4_fs.h

+8 −1
Original line number Diff line number Diff line
@@ -513,7 +513,14 @@ struct ext4_super_block { 
/*150*/	__le32	s_blocks_count_hi;	/* Blocks count */

	__le32	s_r_blocks_count_hi;	/* Reserved blocks count */

	__le32	s_free_blocks_count_hi;	/* Free blocks count */

	__u32	s_reserved[169];	/* Padding to the end of the block */

	__u16	s_min_extra_isize;	/* All inodes have at least # bytes */

	__u16	s_want_extra_isize; 	/* New inodes should reserve # bytes */

	__u32	s_flags;		/* Miscellaneous flags */

	__u16   s_raid_stride;		/* RAID stride */

	__u16   s_mmp_interval;         /* # seconds to wait in MMP checking */

	__u64   s_mmp_block;            /* Block for multi-mount protection */

	__u32   s_raid_stripe_width;    /* blocks on all data disks (N*stride)*/

	__u32   s_reserved[163];        /* Padding to the end of the block */

};



#ifdef __KERNEL__