Messages in this thread | | | Date | Tue, 3 Sep 2013 14:16:24 -0400 | Subject | Question on vma_operations readpages and locking | From | Milosz Tanski <> |
| |
Can anyone help me reason about the readpages() callback in vma_operations?
Do the pages that come in the argument list from readahead come locked? The documentation in the kernel says nothing about locking on the way in (Documentation/filesystems/Locking) unlike readpage. It does say that the pages should be unlocked when the operation is done.
Should I assume that the readpages implementer needs to take care to lock those pages her / his self?
I've been reading through the code for different filesystems to understand what should happen but I'm not a 100% clear on it. Thanks in advance,
- Milosz
| |