[PATCH 3/3] xfs: cancel COW in xfs_cancel_ioend

[Christoph Hellwig]

Thanks Darrick!

I've not seen the inode eviction asserts anymore, but I now hit a
corruption warnings in generic/168 reliably.  I did hit before as
well, but not very reliably.

generic/168 17s ...[  296.988867] XFS (vdc): Metadata corruption detected at
xfs_refcountbt_write_verify+0x3e/0x90, block 0xb0
[  296.990412] XFS (vdc): Unmount and run xfs_repair
[  296.991300] XFS (vdc): First 64 bytes of corrupted metadata buffer:
[  296.992349] ffff88007b755000: 52 33 46 43 00 01 00 01 ff ff ff ff ff ff ff
ff  R3FC............
[  296.993893] ffff88007b755010: 00 00 00 00 00 00 00 b0 00 00 00 00 00 00 00
00  ................
[  297.003293] ffff88007b755020: fe 94 c7 69 fd bd 4a 77 85 3d 9d 6d 7b 45 38
07  ...i..Jw.=.m{E8.
[  297.004442] ffff88007b755030: 00 00 00 00 00 00 00 00 00 00 0b 9c 00 00 7f
07  ................
[  297.005867] XFS (vdc): xfs_do_force_shutdown(0x8) called from line 1247 of
file fs/xfs/xfs_buf.c.  Return address = 0xffffffff814cce52

I'll investigate it in a little more detail.