Hi Andreas,
How about renaming this structure from ext4_extent_data to
ext4_extent_info which used the extent in-core structure
and put it into ext4_fs_extents.h?
Because in-core super_block is ext4_sb_info.
/*
* This is the extent in-core structure.
*/
struct ext4_extent_info {
ext4_lblk_t ee_block; /* first logical block extent covers */
int ee_len; /* number of blocks covered by extent */
ext4_fsblk_t ee_start; /* first physical block extent covers */
};
Would it be possible to use the FIEMAP interface to get the file mapping
data to userspace? That would avoid the need to have a second ioctl
with nearly the same data.
Reducing ioctl makes sense.
But EXT4_EXTENTS_INFO needs to get the file mapping data
with inode number not file name.
So we should keep ext4_extents_info structure
or put ino entry in fiemap structure.
Regards, Akira
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