Re: [PATCH] ext4: fix decoding of raw_inode timestamps

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On Wed, Jul 12, 2023 at 02:09:59PM -0400, Jeff Layton wrote:
> 
> No, I haven't. I'm running fstests on it now. Is there a quickstart for
> running those tests?

At the top level kernel sources:

./tools/testing/kunit/kunit.py  run --kunitconfig ./fs/ext4/.kunitconfig

You should get:

[17:23:09] Starting KUnit Kernel (1/1)...
[17:23:09] ============================================================
[17:23:09] =============== ext4_inode_test (1 subtest) ================
[17:23:09] ============= inode_test_xtimestamp_decoding  ==============
[17:23:09] [PASSED] 1901-12-13 Lower bound of 32bit < 0 timestamp, no extra bits
[17:23:09] [PASSED] 1969-12-31 Upper bound of 32bit < 0 timestamp, no extra bits
[17:23:09] [PASSED] 1970-01-01 Lower bound of 32bit >=0 timestamp, no extra bits
[17:23:09] [PASSED] 2038-01-19 Upper bound of 32bit >=0 timestamp, no extra bits
[17:23:09] [PASSED] 2038-01-19 Lower bound of 32bit <0 timestamp, lo extra sec bit on
[17:23:09] [PASSED] 2106-02-07 Upper bound of 32bit <0 timestamp, lo extra sec bit on
[17:23:09] [PASSED] 2106-02-07 Lower bound of 32bit >=0 timestamp, lo extra sec bit on
[17:23:09] [PASSED] 2174-02-25 Upper bound of 32bit >=0 timestamp, lo extra sec bit on
[17:23:09] [PASSED] 2174-02-25 Lower bound of 32bit <0 timestamp, hi extra sec bit on
[17:23:09] [PASSED] 2242-03-16 Upper bound of 32bit <0 timestamp, hi extra sec bit on
[17:23:09] [PASSED] 2242-03-16 Lower bound of 32bit >=0 timestamp, hi extra sec bit on
[17:23:09] [PASSED] 2310-04-04 Upper bound of 32bit >=0 timestamp, hi extra sec bit on
[17:23:09] [PASSED] 2310-04-04 Upper bound of 32bit>=0 timestamp, hi extra sec bit 1. 1 ns
[17:23:09] [PASSED] 2378-04-22 Lower bound of 32bit>= timestamp. Extra sec bits 1. Max ns
[17:23:09] [PASSED] 2378-04-22 Lower bound of 32bit >=0 timestamp. All extra sec bits on
[17:23:09] [PASSED] 2446-05-10 Upper bound of 32bit >=0 timestamp. All extra sec bits on
[17:23:09] ========= [PASSED] inode_test_xtimestamp_decoding ==========
[17:23:09] ================= [PASSED] ext4_inode_test =================
[17:23:09] ============================================================
[17:23:09] Testing complete. Ran 16 tests: passed: 16
[17:23:09] Elapsed time: 1.943s total, 0.001s configuring, 1.777s building, 0.123s running

	   	   	 	       	      		   - Ted



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