Re: [LTP] [linus:master] [iomap] 219580eea1: ltp.writev07.fail

[Cyril Hrubis]

Hi!
The test description:

 Verify writev() behaviour with partially valid iovec list.
 Kernel <4.8 used to shorten write up to first bad invalid
 iovec. Starting with 4.8, a writev with short data (under
 page size) is likely to get shorten to 0 bytes and return
 EFAULT.

 This test doesn't make assumptions how much will write get
 shortened. It only tests that file content/offset after
 syscall corresponds to return value of writev().

 See: [RFC] writev() semantics with invalid iovec in the middle
      https://marc.info/?l=linux-kernel&m=147388891614289&w=2

-- 
Cyril Hrubis
chrubis@xxxxxxx