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MFC r224497:
authormav <mav@ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f>
Sun, 7 Aug 2011 17:30:03 +0000 (17:30 +0000)
committermav <mav@ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f>
Sun, 7 Aug 2011 17:30:03 +0000 (17:30 +0000)
commit5c316e733856266e0d0bc3e21bed018505693db7
tree07a75429f85666556b34c28de21f3130b300b6ectree | snapshot
parentbe8e1503348891a9802381676ba8ada554ef6933commit | diff
MFC r224497:
Add control for ATA disk read-ahead, alike to the previously added write
cache control. Some controller BIOS'es tend to disable read-ahead, that
dramatically reduces read performance. Previously ata(4) always enabled
read-ahead unconditionally.

git-svn-id: svn://svn.freebsd.org/base/stable/8@224697 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
sys/cam/ata/ata_da.c diff | blob | history
8-STABLE