From: Christoph Hellwig <hch@lst.de>
Date: Tue, 7 Jan 2025 07:07:15 +0000 (+0100)
Subject: iomap: add a io_private field to struct iomap_ioend
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=aa6e4bbb7d20929bb6789a2e6c9417fea1e4d7f7;p=users%2Fhch%2Fmisc.git

iomap: add a io_private field to struct iomap_ioend

Add a private data field to struct iomap_ioend so that the file system
can attach information to it.  Zoned XFS will use this for a pointer to
the open zone.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---

diff --git a/fs/iomap/ioend.c b/fs/iomap/ioend.c
index 44f254ecab55..18894ebba6db 100644
--- a/fs/iomap/ioend.c
+++ b/fs/iomap/ioend.c
@@ -23,6 +23,7 @@ struct iomap_ioend *iomap_init_ioend(struct inode *inode,
 	ioend->io_offset = file_offset;
 	ioend->io_size = bio->bi_iter.bi_size;
 	ioend->io_sector = bio->bi_iter.bi_sector;
+	ioend->io_private = NULL;
 	return ioend;
 }
 EXPORT_SYMBOL_GPL(iomap_init_ioend);
diff --git a/include/linux/iomap.h b/include/linux/iomap.h
index 5768b9f2a1cc..b4be07e8ec94 100644
--- a/include/linux/iomap.h
+++ b/include/linux/iomap.h
@@ -370,6 +370,7 @@ struct iomap_ioend {
 	struct iomap_ioend	*io_parent;	/* parent for completions */
 	loff_t			io_offset;	/* offset in the file */
 	sector_t		io_sector;	/* start sector of ioend */
+	void			*io_private;	/* file system private data */
 	struct bio		io_bio;		/* MUST BE LAST! */
 };