[PATCH 07/17] iomap: add a IOMAP_IOEND_INTEGRITY flag

[Christoph Hellwig <hch@lst.de>]

This will make it easier to share code for the various submit callback
provided by the file system to iomap.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
---
 fs/iomap/ioend.c      |  2 +-
 fs/xfs/xfs_aops.c     |  5 +++--
 fs/xfs/xfs_file.c     |  5 +++--
 include/linux/iomap.h | 12 +++++++++++-
 4 files changed, 18 insertions(+), 6 deletions(-)

diff --git a/fs/iomap/ioend.c b/fs/iomap/ioend.c
index 2d77c11e3c18..573fa89c1632 100644
--- a/fs/iomap/ioend.c
+++ b/fs/iomap/ioend.c
@@ -149,7 +149,7 @@ int iomap_ioend_writeback_submit(struct iomap_writepage_ctx *wpc, int error)
 		return error;
 	}
 
-	if (wpc->iomap.flags & IOMAP_F_INTEGRITY)
+	if (ioend->io_flags & IOMAP_IOEND_INTEGRITY)
 		fs_bio_integrity_generate(&ioend->io_bio);
 	submit_bio(&ioend->io_bio);
 	return 0;
diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
index 8b6119776fb3..4e862406eee9 100644
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -498,7 +498,7 @@ xfs_zoned_writeback_submit(
 		bio_endio(&ioend->io_bio);
 		return error;
 	}
-	if (wpc->iomap.flags & IOMAP_F_INTEGRITY)
+	if (ioend->io_flags & IOMAP_IOEND_INTEGRITY)
 		fs_bio_integrity_generate(&ioend->io_bio);
 	xfs_zone_alloc_and_submit(ioend, &XFS_ZWPC(wpc)->open_zone);
 	return 0;
@@ -588,7 +588,8 @@ xfs_bio_submit_read(
 	struct bio			*bio = ctx->read_ctx;
 
 	/* defer read completions to the ioend workqueue */
-	iomap_init_ioend(iter->inode, bio, ctx->read_ctx_file_offset, 0);
+	iomap_init_ioend(iter->inode, bio, ctx->read_ctx_file_offset,
+		iomap_ioend_flags(&iter->iomap));
 	iomap_bio_submit_read_endio(iter, ctx, xfs_end_bio);
 }
 
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index 426a67b813a7..4d7a284fcff9 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -241,7 +241,8 @@ xfs_dio_read_bounce_submit_io(
 	struct bio		*bio,
 	loff_t			file_offset)
 {
-	iomap_init_ioend(iter->inode, bio, file_offset, IOMAP_IOEND_DIRECT);
+	iomap_init_ioend(iter->inode, bio, file_offset,
+		iomap_ioend_flags(&iter->iomap) | IOMAP_IOEND_DIRECT);
 	bio->bi_end_io = xfs_end_bio;
 	submit_bio(bio);
 }
@@ -732,7 +733,7 @@ xfs_dio_zoned_submit_io(
 
 	bio->bi_end_io = xfs_end_bio;
 	ioend = iomap_init_ioend(iter->inode, bio, file_offset,
-			IOMAP_IOEND_DIRECT);
+		iomap_ioend_flags(&iter->iomap) | IOMAP_IOEND_DIRECT);
 	xfs_zone_alloc_and_submit(ioend, &ac->open_zone);
 }
 
diff --git a/include/linux/iomap.h b/include/linux/iomap.h
index 8e09b2d4eda0..1cc9a35fd5cc 100644
--- a/include/linux/iomap.h
+++ b/include/linux/iomap.h
@@ -483,13 +483,20 @@ sector_t iomap_bmap(struct address_space *mapping, sector_t bno,
 #define IOMAP_IOEND_BOUNDARY		(1U << 2)
 /* is direct I/O */
 #define IOMAP_IOEND_DIRECT		(1U << 3)
+/* generate integrity (PI) information */
+#ifdef CONFIG_BLK_DEV_INTEGRITY
+#define IOMAP_IOEND_INTEGRITY		(1U << 4)
+#else
+#define IOMAP_IOEND_INTEGRITY		0
+#endif /* CONFIG_BLK_DEV_INTEGRITY */
 
 /*
  * Flags that if set on either ioend prevent the merge of two ioends.
  * (IOMAP_IOEND_BOUNDARY also prevents merges, but only one-way)
  */
 #define IOMAP_IOEND_NOMERGE_FLAGS \
-	(IOMAP_IOEND_SHARED | IOMAP_IOEND_UNWRITTEN | IOMAP_IOEND_DIRECT)
+	(IOMAP_IOEND_SHARED | IOMAP_IOEND_UNWRITTEN | IOMAP_IOEND_DIRECT | \
+	 IOMAP_IOEND_INTEGRITY)
 
 /* ioend flags directly implied by iomap flags */
 static inline u16 iomap_ioend_flags(const struct iomap *iomap)
@@ -500,6 +507,9 @@ static inline u16 iomap_ioend_flags(const struct iomap *iomap)
 		flags |= IOMAP_IOEND_UNWRITTEN;
 	if (iomap->flags & IOMAP_F_SHARED)
 		flags |= IOMAP_IOEND_SHARED;
+	if (iomap->flags & IOMAP_F_INTEGRITY)
+		flags |= IOMAP_IOEND_INTEGRITY;
+
 	return flags;
 }
 
-- 
2.53.0