IO errors after "block: remove bio_get_nr_vecs()"

From: Linus Torvalds
Date: Sun Dec 20 2015 - 12:51:43 EST


Kent, Jens, Christoph et al,
please see this bugzilla:

https://bugzilla.kernel.org/show_bug.cgi?id=109661

where Artem Tashkinov bisected his problems with 4.3 down to commit
b54ffb73cadc ("block: remove bio_get_nr_vecs()") that you've all
signed off on.

(Also Tejun - maybe you can see what's up - maybe that error message
tells you something)

I'm not sure what's up with his machine, the disk doesn't seem to be
anyuthing particularly unusual, it looks like a 1TB Seagate Barracuda:

ata1.00: ATA-8: ST1000DM003-1CH162, CC44, max UDMA/133

which doesn't strike me as odd.

Looking at the dmesg, it also looks like it's a pretty normal
Sandybridge setup with Intel chipset. Artem, can you confirm? The PCI
ID for the AHCI chip seems to be (INTEL, 0x1c02).

Any ideas? Anybody?

Linus
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