[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.

-- 
Cyril Hrubis
chrubis@suse.cz