+Cc Sahitya, On 2019/5/24 9:55, sunqiuyang wrote: > From: Qiuyang Sun <[email protected]> > > This ioctl shrinks a given length (aligned to sections) from end of the > main area. Any cursegs and valid blocks will be moved out before > invalidating the range. > > This feature can be used for adjusting partition sizes online. > -- > Changlog v1 ==> v2: > > Sahitya Tummala: > - Add this ioctl for f2fs_compat_ioctl() as well. > - Fix debugfs status to reflect the online resize changes. > - Fix potential race between online resize path and allocate new data > block path or gc path. > > Others: > - Rename some identifiers. > - Add some error handling branches. > - Clear sbi->next_victim_seg[BG_GC/FG_GC] in shrinking range. > -- > Changelog v2 ==> v3: > Implement this interface as ext4's, and change the parameter from shrunk > bytes to new block count of F2FS. > -- > Changelog v3 ==> v4: > - During resizing, force to empty sit_journal and forbid adding new > entries to it, in order to avoid invalid segno in journal after resize. > - Reduce sbi->user_block_count before resize starts. > - Commit the updated superblock first, and then update in-memory metadata > only when the former succeeds. > - Target block count must align to sections. > -- > Changelog v4 ==> v5: > Write checkpoint before and after committing the new superblock, w/o > CP_FSCK_FLAG respectively, so that the FS can be fixed by fsck even if > resize fails after the new superblock is committed. > -- > Changelog v5 ==> v6: > - In free_segment_range(), reduce granularity of gc_mutex. > - Add protection on curseg migration. > > Signed-off-by: Qiuyang Sun <[email protected]> > Signed-off-by: Chao Yu <[email protected]> > Signed-off-by: Sahitya Tummala <[email protected]>
Looks good to me now, Reviewed-by: Chao Yu <[email protected]> To Sahitya, is it okay to you merging all your fixes and adding Signed-off in original patch? We can still separate them from this patch if you object this, let us know. Thanks,
