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generic: add mmap write vs truncate test

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This test exposed a problem with mapped writes to the tail page of a
file in XFS. Hence make it a generic test so taht we can ensure that
all fielsystems handle the case correctly.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Dave Chinner
2014-09-29 12:56:48 +10:00
committed by Dave Chinner
parent 2a726f6f00
commit d7b517da5f
3 changed files with 189 additions and 0 deletions
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tests/generic/029.out
+65
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QA output created by 029
wrote 5120/5120 bytes at offset 0
XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
==== Pre-Remount ===
00000000 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 |XXXXXXXXXXXXXXXX|
*
00000800 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 |YYYYYYYYYYYYYYYY|
*
00001400
==== Post-Remount ==
00000000 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 |XXXXXXXXXXXXXXXX|
*
00000800 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 |YYYYYYYYYYYYYYYY|
*
00001400
wrote 5120/5120 bytes at offset 0
XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
==== Pre-Remount ===
00000000 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 |XXXXXXXXXXXXXXXX|
*
00000400 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 |WWWWWWWWWWWWWWWW|
*
00000800 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 |YYYYYYYYYYYYYYYY|
*
00001400
==== Post-Remount ==
00000000 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 |XXXXXXXXXXXXXXXX|
*
00000400 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 |WWWWWWWWWWWWWWWW|
*
00000800 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 |YYYYYYYYYYYYYYYY|
*
00001400
wrote 5121/5121 bytes at offset 0
XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
==== Pre-Remount ===
00000000 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 |XXXXXXXXXXXXXXXX|
*
00000200 58 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 |XWWWWWWWWWWWWWWW|
00000210 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 |WWWWWWWWWWWWWWWW|
*
00000600 57 57 58 58 58 58 58 58 58 58 58 58 58 58 58 58 |WWXXXXXXXXXXXXXX|
00000610 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 |XXXXXXXXXXXXXXXX|
*
000007f0 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 59 |XXXXXXXXXXXXXXXY|
00000800 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 |YYYYYYYYYYYYYYYY|
*
000013f0 59 59 59 59 59 59 59 59 59 59 59 59 59 59 00 00 |YYYYYYYYYYYYYY..|
00001400 00 |.|
00001401
==== Post-Remount ==
00000000 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 |XXXXXXXXXXXXXXXX|
*
00000200 58 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 |XWWWWWWWWWWWWWWW|
00000210 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 |WWWWWWWWWWWWWWWW|
*
00000600 57 57 58 58 58 58 58 58 58 58 58 58 58 58 58 58 |WWXXXXXXXXXXXXXX|
00000610 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 |XXXXXXXXXXXXXXXX|
*
000007f0 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 59 |XXXXXXXXXXXXXXXY|
00000800 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 |YYYYYYYYYYYYYYYY|
*
000013f0 59 59 59 59 59 59 59 59 59 59 59 59 59 59 00 00 |YYYYYYYYYYYYYY..|
00001400 00 |.|
00001401