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authorJerome Marchand <jmarchan@redhat.com>2009-04-22 14:01:49 +0200
committerJens Axboe <jens.axboe@oracle.com>2009-04-24 08:54:21 +0200
commit42dad7647aec49b3ad20dd0cb832b232a6ae514f (patch)
treeb70d4cb7706f2647e65426e24f078ddf14d6e139 /drivers/block
parent097102c2d04974bdfcfa16a5f3062d499842139c (diff)
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block: simplify I/O stat accounting
This simplifies I/O stat accounting switching code and separates it completely from I/O scheduler switch code. Requests are accounted according to the state of their request queue at the time of the request allocation. There is no need anymore to flush the request queue when switching I/O accounting state. Signed-off-by: Jerome Marchand <jmarchan@redhat.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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