[LTP] [PATCH 1/2] syscalls/preadv01: Run test for all filesystems

[Cyril Hrubis]

Hi!
> > Looking at the test running it for all filesystems would not make much
> > sense as it is since as far as I can tell:
> >
> > 1) setup() creates a file and writes data to it
> >     - dirty pagecache record is created
> >
> > 2) test() reads data from the file
> >     - kernel will copy the data from pagecache
> >
> > 3) test library cleanup will umount() the device
> >     - dirty pagecache is written at this point
> >
> > So we will not reach any filesystem specific code at all.
> >
> > I guess that we may fix that by opening second file descriptor with
> > O_DIRECT which would bypass pagecache so each read/write request would
> > trigger I/O request from the block device.
> Hi Cyril,
> 
> Sorry, i ignored the fact that they use pagecache.
> Can we just keep them and add two new tests as you suggested?

I was simply thinking about opening second fd with O_DIRECT in the test
setup and running the test twice, once for the regular fd and once for
the O_DIRECT one, however creating new test would work as well and may
be even cleaner solution.

-- 
Cyril Hrubis
chrubis@suse.cz