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authorBoaz Harrosh <bharrosh@panasas.com>2011-09-28 13:25:50 +0300
committerBoaz Harrosh <bharrosh@panasas.com>2011-10-14 18:54:42 +0200
commit4b46c9f5cf69505f0bc708995b88b0cc60317ffd (patch)
treee5369fe948509c230470f922a0cd89cda60f2692 /include/scsi
parent5a51c0c7e9a913649aa65d8233470682bcbb7694 (diff)
downloadlinux-4b46c9f5cf69505f0bc708995b88b0cc60317ffd.tar.bz2
ore/exofs: Change ore_check_io API
Current ore_check_io API receives a residual pointer, to report partial IO. But it is actually not used, because in a multiple devices IO there is never a linearity in the IO failure. On the other hand if every failing device is reported through a received callback measures can be taken to handle only failed devices. One at a time. This will also be needed by the objects-layout-driver for it's error reporting facility. Exofs is not currently using the new information and keeps the old behaviour of failing the complete IO in case of an error. (No partial completion) TODO: Use an ore_check_io callback to set_page_error only the failing pages. And re-dirty write pages. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Diffstat (limited to 'include/scsi')
-rw-r--r--include/scsi/osd_ore.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/include/scsi/osd_ore.h b/include/scsi/osd_ore.h
index 716dbeae8cd2..af2231a0fd09 100644
--- a/include/scsi/osd_ore.h
+++ b/include/scsi/osd_ore.h
@@ -153,7 +153,10 @@ int ore_get_io_state(struct ore_layout *layout, struct ore_components *comps,
struct ore_io_state **ios);
void ore_put_io_state(struct ore_io_state *ios);
-int ore_check_io(struct ore_io_state *ios, u64 *resid);
+typedef void (*ore_on_dev_error)(struct ore_io_state *ios, struct ore_dev *od,
+ unsigned dev_index, enum osd_err_priority oep,
+ u64 dev_offset, u64 dev_len);
+int ore_check_io(struct ore_io_state *ios, ore_on_dev_error rep);
int ore_create(struct ore_io_state *ios);
int ore_remove(struct ore_io_state *ios);