Re: Question regarding ext4_journalled_aops: lack of migrate_page

2020-10-09 Thread Chris Goldsworthy
tOn 2020-10-08 23:42, Chris Goldsworthy wrote: Hi there, ext4_aops and ext4_da_aops both have a migratepage callback, whereas ext4_journalled_aops lacks such a callback. Why is this so? I’m asking this due to the following: when a page containing EXT4 journal buffer heads ends up being migrate

Question regarding ext4_journalled_aops: lack of migrate_page

2020-10-08 Thread Chris Goldsworthy
Hi there, ext4_aops and ext4_da_aops both have a migratepage callback, whereas ext4_journalled_aops lacks such a callback. Why is this so? I’m asking this due to the following: when a page containing EXT4 journal buffer heads ends up being migrated, fallback_migrate_page() is used, which ev