Re: [PATCH] ceph: do not truncate pagecache if truncate size doesn't change

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[...]
3540 trunc    from 0x789289 to 0xd8b1
3542 write    0x8571af thru    0x85e2af    (0x7101 bytes)
3543 trunc    from 0x85e2b0 to 0x7dc986
3550 read    0x3b37bd thru    0x3b50a8    (0x18ec bytes)
3551 mapread    0x686907 thru    0x693eb9    (0xd5b3 bytes)
READ BAD DATA: offset = 0x686907, size = 0xd5b3, fname = 112.2
OFFSET    GOOD    BAD    RANGE
0x686907    0x0000    0x198f    0x00000
operation# (mod 256) for the bad data may be 143
0x686908    0x0000    0x8fec    0x00001
operation# (mod 256) for the bad data may be 143

In theory that range should be truncated and zeroed in the first "trunc" from 0x789289 to 0xd8b1 above. From the failure logs, it is the same issue with before in generic/057 test case. But locally I

s/057/075/


couldn't reproduce it after I fixing the bug in ceph fsize_support branch.

BTW, could you reproduce this every time ? Or just occasionally ?

[...]




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