From: Martin K. Petersen Date: Wed, 21 Oct 2015 17:19:33 +0000 (-0400) Subject: block: Consolidate static integrity profile properties X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=0f8087ecdeac921fc4920f1328f55c15080bc6aa;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git block: Consolidate static integrity profile properties We previously made a complete copy of a device's data integrity profile even though several of the fields inside the blk_integrity struct are pointers to fixed template entries in t10-pi.c. Split the static and per-device portions so that we can reference the template directly. Signed-off-by: Martin K. Petersen Reported-by: Christoph Hellwig Reviewed-by: Sagi Grimberg Cc: Dan Williams Signed-off-by: Dan Williams Signed-off-by: Jens Axboe --- diff --git a/block/bio-integrity.c b/block/bio-integrity.c index 14b8faf8b09d..a10ffe19a8dd 100644 --- a/block/bio-integrity.c +++ b/block/bio-integrity.c @@ -177,11 +177,11 @@ bool bio_integrity_enabled(struct bio *bio) if (bi == NULL) return false; - if (bio_data_dir(bio) == READ && bi->verify_fn != NULL && + if (bio_data_dir(bio) == READ && bi->profile->verify_fn != NULL && (bi->flags & BLK_INTEGRITY_VERIFY)) return true; - if (bio_data_dir(bio) == WRITE && bi->generate_fn != NULL && + if (bio_data_dir(bio) == WRITE && bi->profile->generate_fn != NULL && (bi->flags & BLK_INTEGRITY_GENERATE)) return true; @@ -340,7 +340,7 @@ int bio_integrity_prep(struct bio *bio) /* Auto-generate integrity metadata if this is a write */ if (bio_data_dir(bio) == WRITE) - bio_integrity_process(bio, bi->generate_fn); + bio_integrity_process(bio, bi->profile->generate_fn); return 0; } @@ -361,7 +361,7 @@ static void bio_integrity_verify_fn(struct work_struct *work) struct bio *bio = bip->bip_bio; struct blk_integrity *bi = bdev_get_integrity(bio->bi_bdev); - bio->bi_error = bio_integrity_process(bio, bi->verify_fn); + bio->bi_error = bio_integrity_process(bio, bi->profile->verify_fn); /* Restore original bio completion handler */ bio->bi_end_io = bip->bip_end_io; diff --git a/block/blk-integrity.c b/block/blk-integrity.c index 182bfd2383ea..daf590ab3b46 100644 --- a/block/blk-integrity.c +++ b/block/blk-integrity.c @@ -176,10 +176,10 @@ int blk_integrity_compare(struct gendisk *gd1, struct gendisk *gd2) return -1; } - if (strcmp(b1->name, b2->name)) { + if (b1->profile != b2->profile) { printk(KERN_ERR "%s: %s/%s type %s != %s\n", __func__, gd1->disk_name, gd2->disk_name, - b1->name, b2->name); + b1->profile->name, b2->profile->name); return -1; } @@ -275,8 +275,8 @@ static ssize_t integrity_attr_store(struct kobject *kobj, static ssize_t integrity_format_show(struct blk_integrity *bi, char *page) { - if (bi != NULL && bi->name != NULL) - return sprintf(page, "%s\n", bi->name); + if (bi != NULL && bi->profile->name != NULL) + return sprintf(page, "%s\n", bi->profile->name); else return sprintf(page, "none\n"); } @@ -401,7 +401,8 @@ bool blk_integrity_is_initialized(struct gendisk *disk) { struct blk_integrity *bi = blk_get_integrity(disk); - return (bi && bi->name && strcmp(bi->name, bi_unsupported_name) != 0); + return (bi && bi->profile->name && strcmp(bi->profile->name, + bi_unsupported_name) != 0); } EXPORT_SYMBOL(blk_integrity_is_initialized); @@ -446,14 +447,12 @@ int blk_integrity_register(struct gendisk *disk, struct blk_integrity *template) /* Use the provided profile as template */ if (template != NULL) { - bi->name = template->name; - bi->generate_fn = template->generate_fn; - bi->verify_fn = template->verify_fn; + bi->profile = template->profile; bi->tuple_size = template->tuple_size; bi->tag_size = template->tag_size; bi->flags |= template->flags; } else - bi->name = bi_unsupported_name; + bi->profile->name = bi_unsupported_name; disk->queue->backing_dev_info.capabilities |= BDI_CAP_STABLE_WRITES; diff --git a/block/t10-pi.c b/block/t10-pi.c index 24d6e9715318..2c97912335a9 100644 --- a/block/t10-pi.c +++ b/block/t10-pi.c @@ -160,38 +160,30 @@ static int t10_pi_type3_verify_ip(struct blk_integrity_iter *iter) return t10_pi_verify(iter, t10_pi_ip_fn, 3); } -struct blk_integrity t10_pi_type1_crc = { +struct blk_integrity_profile t10_pi_type1_crc = { .name = "T10-DIF-TYPE1-CRC", .generate_fn = t10_pi_type1_generate_crc, .verify_fn = t10_pi_type1_verify_crc, - .tuple_size = sizeof(struct t10_pi_tuple), - .tag_size = 0, }; EXPORT_SYMBOL(t10_pi_type1_crc); -struct blk_integrity t10_pi_type1_ip = { +struct blk_integrity_profile t10_pi_type1_ip = { .name = "T10-DIF-TYPE1-IP", .generate_fn = t10_pi_type1_generate_ip, .verify_fn = t10_pi_type1_verify_ip, - .tuple_size = sizeof(struct t10_pi_tuple), - .tag_size = 0, }; EXPORT_SYMBOL(t10_pi_type1_ip); -struct blk_integrity t10_pi_type3_crc = { +struct blk_integrity_profile t10_pi_type3_crc = { .name = "T10-DIF-TYPE3-CRC", .generate_fn = t10_pi_type3_generate_crc, .verify_fn = t10_pi_type3_verify_crc, - .tuple_size = sizeof(struct t10_pi_tuple), - .tag_size = 0, }; EXPORT_SYMBOL(t10_pi_type3_crc); -struct blk_integrity t10_pi_type3_ip = { +struct blk_integrity_profile t10_pi_type3_ip = { .name = "T10-DIF-TYPE3-IP", .generate_fn = t10_pi_type3_generate_ip, .verify_fn = t10_pi_type3_verify_ip, - .tuple_size = sizeof(struct t10_pi_tuple), - .tag_size = 0, }; EXPORT_SYMBOL(t10_pi_type3_ip); diff --git a/drivers/nvdimm/core.c b/drivers/nvdimm/core.c index cb62ec6a12d0..7df89b547ae1 100644 --- a/drivers/nvdimm/core.c +++ b/drivers/nvdimm/core.c @@ -399,19 +399,22 @@ static int nd_pi_nop_generate_verify(struct blk_integrity_iter *iter) int nd_integrity_init(struct gendisk *disk, unsigned long meta_size) { - struct blk_integrity integrity = { + struct blk_integrity bi; + static struct blk_integrity_profile profile = { .name = "ND-PI-NOP", .generate_fn = nd_pi_nop_generate_verify, .verify_fn = nd_pi_nop_generate_verify, - .tuple_size = meta_size, - .tag_size = meta_size, }; int ret; if (meta_size == 0) return 0; - ret = blk_integrity_register(disk, &integrity); + bi.profile = &profile; + bi.tuple_size = meta_size; + bi.tag_size = meta_size; + + ret = blk_integrity_register(disk, &bi); if (ret) return ret; diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index 22d83752ae87..04e3d60a1e45 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -558,7 +558,7 @@ static int nvme_noop_generate(struct blk_integrity_iter *iter) return 0; } -struct blk_integrity nvme_meta_noop = { +struct blk_integrity_profile nvme_meta_noop = { .name = "NVME_META_NOOP", .generate_fn = nvme_noop_generate, .verify_fn = nvme_noop_verify, @@ -570,14 +570,14 @@ static void nvme_init_integrity(struct nvme_ns *ns) switch (ns->pi_type) { case NVME_NS_DPS_PI_TYPE3: - integrity = t10_pi_type3_crc; + integrity.profile = &t10_pi_type3_crc; break; case NVME_NS_DPS_PI_TYPE1: case NVME_NS_DPS_PI_TYPE2: - integrity = t10_pi_type1_crc; + integrity.profile = &t10_pi_type1_crc; break; default: - integrity = nvme_meta_noop; + integrity.profile = &nvme_meta_noop; break; } integrity.tuple_size = ns->ms; diff --git a/drivers/scsi/sd_dif.c b/drivers/scsi/sd_dif.c index 5c06d292b94c..987bf392c336 100644 --- a/drivers/scsi/sd_dif.c +++ b/drivers/scsi/sd_dif.c @@ -43,6 +43,7 @@ void sd_dif_config_host(struct scsi_disk *sdkp) struct scsi_device *sdp = sdkp->device; struct gendisk *disk = sdkp->disk; u8 type = sdkp->protection_type; + struct blk_integrity bi; int dif, dix; dif = scsi_host_dif_capable(sdp->host, type); @@ -55,39 +56,43 @@ void sd_dif_config_host(struct scsi_disk *sdkp) if (!dix) return; + memset(&bi, 0, sizeof(bi)); + /* Enable DMA of protection information */ if (scsi_host_get_guard(sdkp->device->host) & SHOST_DIX_GUARD_IP) { if (type == SD_DIF_TYPE3_PROTECTION) - blk_integrity_register(disk, &t10_pi_type3_ip); + bi.profile = &t10_pi_type3_ip; else - blk_integrity_register(disk, &t10_pi_type1_ip); + bi.profile = &t10_pi_type1_ip; - disk->integrity->flags |= BLK_INTEGRITY_IP_CHECKSUM; + bi.flags |= BLK_INTEGRITY_IP_CHECKSUM; } else if (type == SD_DIF_TYPE3_PROTECTION) - blk_integrity_register(disk, &t10_pi_type3_crc); + bi.profile = &t10_pi_type3_crc; else - blk_integrity_register(disk, &t10_pi_type1_crc); + bi.profile = &t10_pi_type1_crc; + bi.tuple_size = sizeof(struct t10_pi_tuple); sd_printk(KERN_NOTICE, sdkp, - "Enabling DIX %s protection\n", disk->integrity->name); + "Enabling DIX %s protection\n", bi.profile->name); - /* Signal to block layer that we support sector tagging */ if (dif && type) { - - disk->integrity->flags |= BLK_INTEGRITY_DEVICE_CAPABLE; + bi.flags |= BLK_INTEGRITY_DEVICE_CAPABLE; if (!sdkp->ATO) - return; + goto out; if (type == SD_DIF_TYPE3_PROTECTION) - disk->integrity->tag_size = sizeof(u16) + sizeof(u32); + bi.tag_size = sizeof(u16) + sizeof(u32); else - disk->integrity->tag_size = sizeof(u16); + bi.tag_size = sizeof(u16); sd_printk(KERN_NOTICE, sdkp, "DIF application tag size %u\n", - disk->integrity->tag_size); + bi.tag_size); } + +out: + blk_integrity_register(disk, &bi); } /* diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c index 0f19e11acac2..f29c69120054 100644 --- a/drivers/target/target_core_iblock.c +++ b/drivers/target/target_core_iblock.c @@ -155,17 +155,17 @@ static int iblock_configure_device(struct se_device *dev) if (bi) { struct bio_set *bs = ib_dev->ibd_bio_set; - if (!strcmp(bi->name, "T10-DIF-TYPE3-IP") || - !strcmp(bi->name, "T10-DIF-TYPE1-IP")) { + if (!strcmp(bi->profile->name, "T10-DIF-TYPE3-IP") || + !strcmp(bi->profile->name, "T10-DIF-TYPE1-IP")) { pr_err("IBLOCK export of blk_integrity: %s not" - " supported\n", bi->name); + " supported\n", bi->profile->name); ret = -ENOSYS; goto out_blkdev_put; } - if (!strcmp(bi->name, "T10-DIF-TYPE3-CRC")) { + if (!strcmp(bi->profile->name, "T10-DIF-TYPE3-CRC")) { dev->dev_attrib.pi_prot_type = TARGET_DIF_TYPE3_PROT; - } else if (!strcmp(bi->name, "T10-DIF-TYPE1-CRC")) { + } else if (!strcmp(bi->profile->name, "T10-DIF-TYPE1-CRC")) { dev->dev_attrib.pi_prot_type = TARGET_DIF_TYPE1_PROT; } diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 830f9c07d4bb..f36c6476f1c7 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1462,16 +1462,18 @@ struct blk_integrity_iter { typedef int (integrity_processing_fn) (struct blk_integrity_iter *); -struct blk_integrity { - integrity_processing_fn *generate_fn; - integrity_processing_fn *verify_fn; - - unsigned short flags; - unsigned short tuple_size; - unsigned short interval; - unsigned short tag_size; +struct blk_integrity_profile { + integrity_processing_fn *generate_fn; + integrity_processing_fn *verify_fn; + const char *name; +}; - const char *name; +struct blk_integrity { + struct blk_integrity_profile *profile; + unsigned short flags; + unsigned short tuple_size; + unsigned short interval; + unsigned short tag_size; }; extern bool blk_integrity_is_initialized(struct gendisk *); diff --git a/include/linux/t10-pi.h b/include/linux/t10-pi.h index 6a8b9942632d..dd8de82cf5b5 100644 --- a/include/linux/t10-pi.h +++ b/include/linux/t10-pi.h @@ -14,9 +14,9 @@ struct t10_pi_tuple { }; -extern struct blk_integrity t10_pi_type1_crc; -extern struct blk_integrity t10_pi_type1_ip; -extern struct blk_integrity t10_pi_type3_crc; -extern struct blk_integrity t10_pi_type3_ip; +extern struct blk_integrity_profile t10_pi_type1_crc; +extern struct blk_integrity_profile t10_pi_type1_ip; +extern struct blk_integrity_profile t10_pi_type3_crc; +extern struct blk_integrity_profile t10_pi_type3_ip; #endif