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| author | Mikulas Patocka <mpatocka@redhat.com> | 2010-04-07 01:43:33 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-04-07 01:43:33 +0200 |
| commit | 720fc22a7af79d91ec460c80efa92c65c12d105e (patch) | |
| tree | 87cf610c59bd1f1916083f067145779f31942274 /drivers/mfd/ezx-pcap.c | |
| parent | ide: Must hold queue lock when requeueing (diff) | |
| download | linux-720fc22a7af79d91ec460c80efa92c65c12d105e.tar.xz linux-720fc22a7af79d91ec460c80efa92c65c12d105e.zip | |
ide: Fix IDE taskfile with cfq scheduler
When ide taskfile access is being used (for example with hdparm --security
commands) and cfq scheduler is selected, the scheduler crashes on BUG in
cfq_put_request.
The reason is that the cfq scheduler is tracking counts of read and write
requests separately; the ide-taskfile subsystem allocates a read request and
then flips the flag to make it a write request. The counters in cfq will
mismatch.
This patch changes ide-taskfile to allocate the READ or WRITE request as
required and don't change the flag later.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/mfd/ezx-pcap.c')
0 files changed, 0 insertions, 0 deletions