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From: Christoph Hellwig <hch@lst.de>
To: xfs@oss.sgi.com
Subject: [PATCH 4/7] xfs: make xfs_bmbt_to_iomap available outside of xfs_pnfs.c
Date: Mon, 14 Mar 2016 22:02:47 +0100	[thread overview]
Message-ID: <1457989370-6904-5-git-send-email-hch@lst.de> (raw)
In-Reply-To: <1457989370-6904-1-git-send-email-hch@lst.de>

And ensure it works for RT subvolume files an set the block device,
both of which will be needed to be able to use the function in the
buffered write path.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 fs/xfs/xfs_iomap.c | 27 +++++++++++++++++++++++++++
 fs/xfs/xfs_iomap.h |  4 ++++
 fs/xfs/xfs_pnfs.c  | 26 --------------------------
 3 files changed, 31 insertions(+), 26 deletions(-)

diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
index d81bdc0..cc53430 100644
--- a/fs/xfs/xfs_iomap.c
+++ b/fs/xfs/xfs_iomap.c
@@ -15,6 +15,7 @@
  * along with this program; if not, write the Free Software Foundation,
  * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  */
+#include <linux/iomap.h>
 #include "xfs.h"
 #include "xfs_fs.h"
 #include "xfs_shared.h"
@@ -959,3 +960,29 @@ error_on_bmapi_transaction:
 	xfs_iunlock(ip, XFS_ILOCK_EXCL);
 	return error;
 }
+
+void
+xfs_bmbt_to_iomap(
+	struct xfs_inode	*ip,
+	struct iomap		*iomap,
+	struct xfs_bmbt_irec	*imap)
+{
+	struct xfs_mount	*mp = ip->i_mount;
+
+	if (imap->br_startblock == HOLESTARTBLOCK) {
+		iomap->blkno = IOMAP_NULL_BLOCK;
+		iomap->type = IOMAP_HOLE;
+	} else if (imap->br_startblock == DELAYSTARTBLOCK) {
+		iomap->blkno = IOMAP_NULL_BLOCK;
+		iomap->type = IOMAP_DELALLOC;
+	} else {
+		iomap->blkno = xfs_fsb_to_db(ip, imap->br_startblock);
+		if (imap->br_state == XFS_EXT_UNWRITTEN)
+			iomap->type = IOMAP_UNWRITTEN;
+		else
+			iomap->type = IOMAP_MAPPED;
+	}
+	iomap->offset = XFS_FSB_TO_B(mp, imap->br_startoff);
+	iomap->length = XFS_FSB_TO_B(mp, imap->br_blockcount);
+	iomap->bdev = xfs_find_bdev_for_inode(ip);
+}
diff --git a/fs/xfs/xfs_iomap.h b/fs/xfs/xfs_iomap.h
index 8688e66..718f07c 100644
--- a/fs/xfs/xfs_iomap.h
+++ b/fs/xfs/xfs_iomap.h
@@ -18,6 +18,7 @@
 #ifndef __XFS_IOMAP_H__
 #define __XFS_IOMAP_H__
 
+struct iomap;
 struct xfs_inode;
 struct xfs_bmbt_irec;
 
@@ -29,4 +30,7 @@ int xfs_iomap_write_allocate(struct xfs_inode *, xfs_off_t,
 			struct xfs_bmbt_irec *);
 int xfs_iomap_write_unwritten(struct xfs_inode *, xfs_off_t, xfs_off_t);
 
+void xfs_bmbt_to_iomap(struct xfs_inode *, struct iomap *,
+		struct xfs_bmbt_irec *);
+
 #endif /* __XFS_IOMAP_H__*/
diff --git a/fs/xfs/xfs_pnfs.c b/fs/xfs/xfs_pnfs.c
index 8b6f20f..7c5a8d5 100644
--- a/fs/xfs/xfs_pnfs.c
+++ b/fs/xfs/xfs_pnfs.c
@@ -80,32 +80,6 @@ xfs_fs_get_uuid(
 	return 0;
 }
 
-static void
-xfs_bmbt_to_iomap(
-	struct xfs_inode	*ip,
-	struct iomap		*iomap,
-	struct xfs_bmbt_irec	*imap)
-{
-	struct xfs_mount	*mp = ip->i_mount;
-
-	if (imap->br_startblock == HOLESTARTBLOCK) {
-		iomap->blkno = IOMAP_NULL_BLOCK;
-		iomap->type = IOMAP_HOLE;
-	} else if (imap->br_startblock == DELAYSTARTBLOCK) {
-		iomap->blkno = IOMAP_NULL_BLOCK;
-		iomap->type = IOMAP_DELALLOC;
-	} else {
-		iomap->blkno =
-			XFS_FSB_TO_DADDR(ip->i_mount, imap->br_startblock);
-		if (imap->br_state == XFS_EXT_UNWRITTEN)
-			iomap->type = IOMAP_UNWRITTEN;
-		else
-			iomap->type = IOMAP_MAPPED;
-	}
-	iomap->offset = XFS_FSB_TO_B(mp, imap->br_startoff);
-	iomap->length = XFS_FSB_TO_B(mp, imap->br_blockcount);
-}
-
 /*
  * Get a layout for the pNFS client.
  */
-- 
2.1.4

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  parent reply	other threads:[~2016-03-14 21:02 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-14 21:02 [RFC] iomap infrastructure and multipage writes Christoph Hellwig
2016-03-14 21:02 ` [PATCH 1/7] fs: move struct iomap from exportfs.h to a separate header Christoph Hellwig
2016-03-14 21:02 ` [PATCH 2/7] fs: introduce iomap infrastructure Christoph Hellwig
2016-04-04  1:28   ` Dave Chinner
2016-04-04  1:47     ` Dave Chinner
2016-04-04  7:12       ` Christoph Hellwig
2016-04-04  7:55         ` Dave Chinner
2016-03-14 21:02 ` [PATCH 3/7] xfs: make xfs_find_bdev_for_inode available outside of xfs_aops.c Christoph Hellwig
2016-03-14 21:02 ` Christoph Hellwig [this message]
2016-03-14 21:02 ` [PATCH 5/7] xfs: reshuffle truncate Christoph Hellwig
2016-03-14 21:02 ` [PATCH 6/7] xfs: implement iomap based buffered write path Christoph Hellwig
2016-03-14 21:02 ` [PATCH 7/7] xfs: remove buffered write support from __xfs_get_blocks Christoph Hellwig

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