Jeff Garzik wrote:
NOTE: This is appended to the previous libata fixes, in a linear
history. If you pull this, and have not pulled yesterday's submission,
you will get -both-. If you pulled yesterday's fixes, you will only get
the single changeset below.
Please pull from 'upstream-linus' branch of
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev.git upstream-linus
to receive the following updates:
drivers/ata/pdc_adma.c | 9 +-
drivers/ata/sata_mv.c | 26 +-
drivers/ata/sata_sil24.c | 11 +-
drivers/scsi/ipr.c | 11 +-
include/linux/libata.h | 12 -
11 files changed, 1567 insertions(+), 90 deletions(-)
create mode 100644 drivers/ata/sata_fsl.c
[libata] kill ata_sg_is_last()
Short term, this works around a bug introduced by early sg-chaining
work.
Long term, removing this function eliminates a branch from a hot
path loop in each scatter/gather table build. Also, as this code
demonstrates, we don't need to _track_ the end of the s/g list, as
long as we mark it in some way. And doing so programatically is nice.
So its a useful cleanup, regardless of its short term effects.
Based conceptually on a quick patch by Jens Axboe.
Signed-off-by: Jeff Garzik <[email protected]>
And if it wasn't clear from the flurry of emails, this is independent
from and parallel to Jens' current work.
So, it should not conflict, and it fixes several do-not-work-at-all
drivers broken by sg-chaining.
Jeff
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