block: invert the BLK_INTEGRITY_{GENERATE,VERIFY} flags

Invert the flags so that user set values will be able to persist
revalidating the integrity information once we switch the integrity
information to queue_limits.

Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Chaitanya Kulkarni <[email protected]>
Reviewed-by: Hannes Reinecke <[email protected]>
Reviewed-by: Martin K. Petersen <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jens Axboe <[email protected]>

Author: Christoph Hellwig

block/bio-integrity.c

@@ -448,10 +448,10 @@ bool bio_integrity_prep(struct bio *bio)
 		return true;
 
 	if (bio_data_dir(bio) == READ) {
-		if (!(bi->flags & BLK_INTEGRITY_VERIFY))
+		if (bi->flags & BLK_INTEGRITY_NOVERIFY)
 			return true;
 	} else {
-		if (!(bi->flags & BLK_INTEGRITY_GENERATE))
+		if (bi->flags & BLK_INTEGRITY_NOGENERATE)
 			return true;
 
 		/*

block/blk-integrity.c

@@ -254,10 +254,11 @@ static ssize_t flag_store(struct device *dev, struct device_attribute *attr,
 	if (err)
 		return err;
 
+	/* the flags are inverted vs the values in the sysfs files */
 	if (val)
-		bi->flags |= flag;
-	else
 		bi->flags &= ~flag;
+	else
+		bi->flags |= flag;
 	return count;
 }
 
@@ -266,7 +267,7 @@ static ssize_t flag_show(struct device *dev, struct device_attribute *attr,
 {
 	struct blk_integrity *bi = dev_to_bi(dev);
 
-	return sysfs_emit(page, "%d\n", !!(bi->flags & flag));
+	return sysfs_emit(page, "%d\n", !(bi->flags & flag));
 }
 
 static ssize_t format_show(struct device *dev, struct device_attribute *attr,
@@ -301,26 +302,26 @@ static ssize_t read_verify_store(struct device *dev,
 				 struct device_attribute *attr,
 				 const char *page, size_t count)
 {
-	return flag_store(dev, attr, page, count, BLK_INTEGRITY_VERIFY);
+	return flag_store(dev, attr, page, count, BLK_INTEGRITY_NOVERIFY);
 }
 
 static ssize_t read_verify_show(struct device *dev,
 				struct device_attribute *attr, char *page)
 {
-	return flag_show(dev, attr, page, BLK_INTEGRITY_VERIFY);
+	return flag_show(dev, attr, page, BLK_INTEGRITY_NOVERIFY);
 }
 
 static ssize_t write_generate_store(struct device *dev,
 				    struct device_attribute *attr,
 				    const char *page, size_t count)
 {
-	return flag_store(dev, attr, page, count, BLK_INTEGRITY_GENERATE);
+	return flag_store(dev, attr, page, count, BLK_INTEGRITY_NOGENERATE);
 }
 
 static ssize_t write_generate_show(struct device *dev,
 				   struct device_attribute *attr, char *page)
 {
-	return flag_show(dev, attr, page, BLK_INTEGRITY_GENERATE);
+	return flag_show(dev, attr, page, BLK_INTEGRITY_NOGENERATE);
 }
 
 static ssize_t device_is_integrity_capable_show(struct device *dev,
@@ -371,8 +372,7 @@ void blk_integrity_register(struct gendisk *disk, struct blk_integrity *template
 	struct blk_integrity *bi = &disk->queue->integrity;
 
 	bi->csum_type = template->csum_type;
-	bi->flags = BLK_INTEGRITY_VERIFY | BLK_INTEGRITY_GENERATE |
-		template->flags;
+	bi->flags = template->flags;
 	bi->interval_exp = template->interval_exp ? :
 		ilog2(queue_logical_block_size(disk->queue));
 	bi->tuple_size = template->tuple_size;

include/linux/blk-integrity.h

@@ -7,8 +7,8 @@
 struct request;
 
 enum blk_integrity_flags {
-	BLK_INTEGRITY_VERIFY		= 1 << 0,
-	BLK_INTEGRITY_GENERATE		= 1 << 1,
+	BLK_INTEGRITY_NOVERIFY		= 1 << 0,
+	BLK_INTEGRITY_NOGENERATE	= 1 << 1,
 	BLK_INTEGRITY_DEVICE_CAPABLE	= 1 << 2,
 	BLK_INTEGRITY_REF_TAG		= 1 << 3,
 };