diff options
Diffstat (limited to 'drivers/scsi/megaraid/megaraid_sas_fp.c')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_fp.c | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas_fp.c b/drivers/scsi/megaraid/megaraid_sas_fp.c index 294abb0defa6..e3d251a2e26a 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fp.c +++ b/drivers/scsi/megaraid/megaraid_sas_fp.c @@ -362,15 +362,20 @@ MR_BuildRaidContext(struct megasas_instance *instance, /* assume this IO needs the full row - we'll adjust if not true */ regSize = stripSize; - /* If IO spans more than 1 strip, fp is not possible - FP is not possible for writes on non-0 raid levels - FP is not possible if LD is not capable */ - if (num_strips > 1 || (!isRead && raid->level != 0) || - !raid->capability.fpCapable) { + /* Check if we can send this I/O via FastPath */ + if (raid->capability.fpCapable) { + if (isRead) + io_info->fpOkForIo = (raid->capability.fpReadCapable && + ((num_strips == 1) || + raid->capability. + fpReadAcrossStripe)); + else + io_info->fpOkForIo = (raid->capability.fpWriteCapable && + ((num_strips == 1) || + raid->capability. + fpWriteAcrossStripe)); + } else io_info->fpOkForIo = FALSE; - } else { - io_info->fpOkForIo = TRUE; - } if (numRows == 1) { /* single-strip IOs can always lock only the data needed */ |