diff options
Diffstat (limited to 'include/linux/ext2_fs.h')
| -rw-r--r-- | include/linux/ext2_fs.h | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/include/linux/ext2_fs.h b/include/linux/ext2_fs.h index 153d755376a4..c77c3bbfe4bb 100644 --- a/include/linux/ext2_fs.h +++ b/include/linux/ext2_fs.h @@ -29,11 +29,12 @@ #undef EXT2FS_DEBUG /* - * Define EXT2_PREALLOCATE to preallocate data blocks for expanding files + * Define EXT2_RESERVATION to reserve data blocks for expanding files */ -#define EXT2_PREALLOCATE -#define EXT2_DEFAULT_PREALLOC_BLOCKS 8 - +#define EXT2_DEFAULT_RESERVE_BLOCKS 8 +/*max window size: 1024(direct blocks) + 3([t,d]indirect blocks) */ +#define EXT2_MAX_RESERVE_BLOCKS 1027 +#define EXT2_RESERVE_WINDOW_NOT_ALLOCATED 0 /* * The second extended file system version */ @@ -200,6 +201,8 @@ struct ext2_group_desc #define EXT2_IOC_SETFLAGS FS_IOC_SETFLAGS #define EXT2_IOC_GETVERSION FS_IOC_GETVERSION #define EXT2_IOC_SETVERSION FS_IOC_SETVERSION +#define EXT2_IOC_GETRSVSZ _IOR('f', 5, long) +#define EXT2_IOC_SETRSVSZ _IOW('f', 6, long) /* * ioctl commands in 32 bit emulation @@ -317,8 +320,9 @@ struct ext2_inode { #define EXT2_MOUNT_XATTR_USER 0x004000 /* Extended user attributes */ #define EXT2_MOUNT_POSIX_ACL 0x008000 /* POSIX Access Control Lists */ #define EXT2_MOUNT_XIP 0x010000 /* Execute in place */ -#define EXT2_MOUNT_USRQUOTA 0x020000 /* user quota */ -#define EXT2_MOUNT_GRPQUOTA 0x040000 /* group quota */ +#define EXT2_MOUNT_USRQUOTA 0x020000 /* user quota */ +#define EXT2_MOUNT_GRPQUOTA 0x040000 /* group quota */ +#define EXT2_MOUNT_RESERVATION 0x080000 /* Preallocation */ #define clear_opt(o, opt) o &= ~EXT2_MOUNT_##opt @@ -558,4 +562,11 @@ enum { #define EXT2_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT2_DIR_ROUND) & \ ~EXT2_DIR_ROUND) +static inline ext2_fsblk_t +ext2_group_first_block_no(struct super_block *sb, unsigned long group_no) +{ + return group_no * (ext2_fsblk_t)EXT2_BLOCKS_PER_GROUP(sb) + + le32_to_cpu(EXT2_SB(sb)->s_es->s_first_data_block); +} + #endif /* _LINUX_EXT2_FS_H */ |