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| author |   Christoph Hellwig <hch@lst.de> | 2010-05-19 20:53:10 +0200 |
|---|---|---|
| committer |   Doug Goldstein <cardoe@gentoo.org> | 2010-07-20 17:28:17 -0500 |
| commit | fb0bd59720c4010f9dd5fb7627ed3bc3d137b25d (patch) | |
| tree | 9ba12b8fd344b0c4a76306e2292e8c2decf0fa15 /qbool.c | |
| parent | pci: irq_state vmstate breakage (diff) | |
| download | qemu-kvm-fb0bd59720c4010f9dd5fb7627ed3bc3d137b25d.tar.gz qemu-kvm-fb0bd59720c4010f9dd5fb7627ed3bc3d137b25d.tar.bz2 qemu-kvm-fb0bd59720c4010f9dd5fb7627ed3bc3d137b25d.zip | |
block: fix sector comparism in multiwrite_req_compare
The difference between the start sectors of two requests can be larger
than the size of the "int" type, which can lead to a not correctly
sorted multiwrite array and thus spurious I/O errors and filesystem
corruption due to incorrect request merges.
So instead of doing the cute sector arithmetics trick spell out the
exact comparisms.
Spotted by Kevin Wolf based on a testcase from Michael Tokarev.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit 77be4366baface6613cfc312ba281f8e5860997c)
Diffstat (limited to 'qbool.c')
0 files changed, 0 insertions, 0 deletions