I am porting some of  file system related code from 3.0.101 kernel to 4.4.13 kernel and found that the number of bio flags have been reduced from 13 to 8 and some of the which been removed are :

BIO_UPTODATE

BIO_RW_BLOCK

BIO_EOF

BIO_EOPNOTSUPP

...

I was unable to find much in the documentation sections regarding the flags.

Can someone please help providing inputs or pointers over this change.

Thank you for your help.

Regards,

~Praveen.