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generic: Test races between processes doing mmap writes

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Add test which spawns two processes both writing one file via mmap.
Then to the test when processes first prefault the file by reading it
via mmap. This is mainly interesting to uncover races in DAX fault
handling.

Signed-off-by: Jan Kara <jack@suse.cz>
Acked-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Jan Kara
2016-05-09 10:54:36 +10:00
committed by Dave Chinner
parent 9e8b4e2755
commit 507d31596c
4 changed files with 203 additions and 20 deletions
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tests/generic/345.out
+73
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QA output created by 345
INFO: zero-filled test...
INFO: sz = 16777216
INFO: process 0 created
INFO: process 1 created
INFO: 0 error(s) detected
INFO: posix_fallocate test...
INFO: sz = 16777216
INFO: process 0 created
INFO: process 1 created
INFO: 0 error(s) detected
INFO: ftruncate test...
INFO: sz = 16777216
INFO: process 0 created
INFO: process 1 created
INFO: 0 error(s) detected
INFO: zero-filled test...
INFO: sz = 268435456
INFO: process 0 created
INFO: process 1 created
INFO: 0 error(s) detected
INFO: posix_fallocate test...
INFO: sz = 268435456
INFO: process 0 created
INFO: process 1 created
INFO: 0 error(s) detected
INFO: ftruncate test...
INFO: sz = 268435456
INFO: process 0 created
INFO: process 1 created
INFO: 0 error(s) detected
INFO: zero-filled test...
INFO: sz = 16777216
INFO: process 0 created
INFO: process 1 created
INFO: 0 error(s) detected
INFO: posix_fallocate test...
INFO: sz = 16777216
INFO: process 0 created
INFO: process 1 created
INFO: 0 error(s) detected
INFO: ftruncate test...
INFO: sz = 16777216
INFO: process 0 created
INFO: process 1 created
INFO: 0 error(s) detected
INFO: zero-filled test...
INFO: sz = 268435456
INFO: process 0 created
INFO: process 1 created
INFO: 0 error(s) detected
INFO: posix_fallocate test...
INFO: sz = 268435456
INFO: process 0 created
INFO: process 1 created
INFO: 0 error(s) detected
INFO: ftruncate test...
INFO: sz = 268435456
INFO: process 0 created
INFO: process 1 created
INFO: 0 error(s) detected