question about ext2_find_shared

Hi, all

the function ext2_find_shared is located fs/ext2/inode.c 935

I see ext2_find_shared is related with truncation, but i don't know what's the use of it.

And i am also confused with the implementation of ext2_find_shared.

It would be greatly appreciated if somebody can show me what's the use of ext2_find_shared and how it works.

Regards

Peter Pan
Red Flag Software Co.,Ltd