| commit | da917d69d0ea63f5390716cba6e77f490ce96df9 | |
| author | Tejun Heo <htejun@gmail.com> | |
| Sun, 23 Sep 2007 04:14:12 +0000 (23 13:14 +0900) | ||
| committer | Jeff Garzik <jeff@garzik.org> | |
| Fri, 12 Oct 2007 18:55:41 +0000 (12 14:55 -0400) | ||
| tree | 214670f42be4c140bbd05226adc8f86db51ee725 | treesnapshot (tar.gz zip) |
| parent | 31cc23b34913bc173680bdc87af79e551bf8cc0d | commitdiff |
libata-pmp-prep: implement qc_defer helpers
Implement ap->nr_active_links (the number of links with active qcs),
ap->excl_link (pointer to link which can be used by ->qc_defer and is
cleared when a qc with ATA_QCFLAG_CLEAR_EXCL completes), and
ata_link_active().
These can be used by ->qc_defer() to implement proper command
exclusion. This set of helpers seem enough for both sil24 (ATAPI
exclusion needed) and cmd-switching PMP.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Implement ap->nr_active_links (the number of links with active qcs),
ap->excl_link (pointer to link which can be used by ->qc_defer and is
cleared when a qc with ATA_QCFLAG_CLEAR_EXCL completes), and
ata_link_active().
These can be used by ->qc_defer() to implement proper command
exclusion. This set of helpers seem enough for both sil24 (ATAPI
exclusion needed) and cmd-switching PMP.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
| drivers/ata/libata-core.c | diffblobblamehistory | |
| drivers/ata/libata-eh.c | diffblobblamehistory | |
| include/linux/libata.h | diffblobblamehistory |