[PATCH 11/12] block: invert the BLK_INTEGRITY_{GENERATE,VERIFY} flags

[Christoph Hellwig]

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 <hch at lst.de>
---
 block/bio-integrity.c         |  4 ++--
 block/blk-integrity.c         | 19 ++++++++++---------
 include/linux/blk-integrity.h |  4 ++--
 3 files changed, 14 insertions(+), 13 deletions(-)

diff --git a/block/bio-integrity.c b/block/bio-integrity.c
index 5966a65edcd10e..3d6f6a63888f2e 100644
--- a/block/bio-integrity.c
+++ b/block/bio-integrity.c
@@ -450,10 +450,10 @@ 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;
 	}
 
diff --git a/block/blk-integrity.c b/block/blk-integrity.c
index fbb0bd467eedbf..9a126c8d08f1d8 100644
--- a/block/blk-integrity.c
+++ b/block/blk-integrity.c
@@ -255,10 +255,11 @@ 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;
 }
 
@@ -267,7 +268,9 @@ 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->csum_type != BLK_INTEGRITY_CSUM_NONE &&
+		 !(bi->flags & flag)));
 }
 
 static ssize_t format_show(struct device *dev, struct device_attribute *attr,
@@ -302,26 +305,26 @@ 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,
@@ -373,8 +376,6 @@ void blk_integrity_register(struct gendisk *disk, struct blk_integrity *template
 
 	bi->csum_type = template->csum_type;
 	bi->flags = template->flags;
-	if (bi->csum_type != BLK_INTEGRITY_CSUM_NONE)
-		bi->flags |= BLK_INTEGRITY_VERIFY | BLK_INTEGRITY_GENERATE;
 	bi->interval_exp = template->interval_exp ? :
 		ilog2(queue_logical_block_size(disk->queue));
 	bi->tuple_size = template->tuple_size;
diff --git a/include/linux/blk-integrity.h b/include/linux/blk-integrity.h
index dea0fdebc3bdc7..a4bf2c78776c06 100644
--- a/include/linux/blk-integrity.h
+++ b/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,
 };
-- 
2.43.0