Merge branch 'iomap-fixes-4.8-rc3' into for-next

4 files changed, 58 insertions, 12 deletions

diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
index 4398932a7d1b..2af0dda1c978 100644
--- a/fs/xfs/xfs_iomap.c
+++ b/fs/xfs/xfs_iomap.c
@@ -1041,20 +1041,14 @@ xfs_file_iomap_begin(
 			return error;
 
 		trace_xfs_iomap_alloc(ip, offset, length, 0, &imap);
-		xfs_bmbt_to_iomap(ip, iomap, &imap);
-	} else if (nimaps) {
-		xfs_iunlock(ip, XFS_ILOCK_EXCL);
-		trace_xfs_iomap_found(ip, offset, length, 0, &imap);
-		xfs_bmbt_to_iomap(ip, iomap, &imap);
 	} else {
+		ASSERT(nimaps);
+
 		xfs_iunlock(ip, XFS_ILOCK_EXCL);
-		trace_xfs_iomap_not_found(ip, offset, length, 0, &imap);
-		iomap->blkno = IOMAP_NULL_BLOCK;
-		iomap->type = IOMAP_HOLE;
-		iomap->offset = offset;
-		iomap->length = length;
+		trace_xfs_iomap_found(ip, offset, length, 0, &imap);
 	}
 
+	xfs_bmbt_to_iomap(ip, iomap, &imap);
 	return 0;
 }
 
@@ -1116,3 +1110,48 @@ struct iomap_ops xfs_iomap_ops = {
 	.iomap_begin		= xfs_file_iomap_begin,
 	.iomap_end		= xfs_file_iomap_end,
 };
+
+static int
+xfs_xattr_iomap_begin(
+	struct inode		*inode,
+	loff_t			offset,
+	loff_t			length,
+	unsigned		flags,
+	struct iomap		*iomap)
+{
+	struct xfs_inode	*ip = XFS_I(inode);
+	struct xfs_mount	*mp = ip->i_mount;
+	xfs_fileoff_t		offset_fsb = XFS_B_TO_FSBT(mp, offset);
+	xfs_fileoff_t		end_fsb = XFS_B_TO_FSB(mp, offset + length);
+	struct xfs_bmbt_irec	imap;
+	int			nimaps = 1, error = 0;
+	unsigned		lockmode;
+
+	if (XFS_FORCED_SHUTDOWN(mp))
+		return -EIO;
+
+	lockmode = xfs_ilock_data_map_shared(ip);
+
+	/* if there are no attribute fork or extents, return ENOENT */
+	if (XFS_IFORK_Q(ip) || !ip->i_d.di_anextents) {
+		error = -ENOENT;
+		goto out_unlock;
+	}
+
+	ASSERT(ip->i_d.di_aformat != XFS_DINODE_FMT_LOCAL);
+	error = xfs_bmapi_read(ip, offset_fsb, end_fsb - offset_fsb, &imap,
+			       &nimaps, XFS_BMAPI_ENTIRE | XFS_BMAPI_ATTRFORK);
+out_unlock:
+	xfs_iunlock(ip, lockmode);
+
+	if (!error) {
+		ASSERT(nimaps);
+		xfs_bmbt_to_iomap(ip, iomap, &imap);
+	}
+
+	return error;
+}
+
+struct iomap_ops xfs_xattr_iomap_ops = {
+	.iomap_begin		= xfs_xattr_iomap_begin,
+};
diff --git a/fs/xfs/xfs_iomap.h b/fs/xfs/xfs_iomap.h
index e066d045e2ff..fb8aca3d69ab 100644
--- a/fs/xfs/xfs_iomap.h
+++ b/fs/xfs/xfs_iomap.h
@@ -35,5 +35,6 @@ void xfs_bmbt_to_iomap(struct xfs_inode *, struct iomap *,
 		struct xfs_bmbt_irec *);
 
 extern struct iomap_ops xfs_iomap_ops;
+extern struct iomap_ops xfs_xattr_iomap_ops;
 
 #endif /* __XFS_IOMAP_H__*/
diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
index ab820f84ed50..b24c3102fa93 100644
--- a/fs/xfs/xfs_iops.c
+++ b/fs/xfs/xfs_iops.c
@@ -1009,7 +1009,14 @@ xfs_vn_fiemap(
 	int			error;
 
 	xfs_ilock(XFS_I(inode), XFS_IOLOCK_SHARED);
-	error = iomap_fiemap(inode, fieinfo, start, length, &xfs_iomap_ops);
+	if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) {
+		fieinfo->fi_flags &= ~FIEMAP_FLAG_XATTR;
+		error = iomap_fiemap(inode, fieinfo, start, length,
+				&xfs_xattr_iomap_ops);
+	} else {
+		error = iomap_fiemap(inode, fieinfo, start, length,
+				&xfs_iomap_ops);
+	}
 	xfs_iunlock(XFS_I(inode), XFS_IOLOCK_SHARED);
 
 	return error;
diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h
index 551b7e26980c..7e88bec3f359 100644
--- a/fs/xfs/xfs_trace.h
+++ b/fs/xfs/xfs_trace.h
@@ -1298,7 +1298,6 @@ DEFINE_IOMAP_EVENT(xfs_get_blocks_alloc);
 DEFINE_IOMAP_EVENT(xfs_get_blocks_map_direct);
 DEFINE_IOMAP_EVENT(xfs_iomap_alloc);
 DEFINE_IOMAP_EVENT(xfs_iomap_found);
-DEFINE_IOMAP_EVENT(xfs_iomap_not_found);
 
 DECLARE_EVENT_CLASS(xfs_simple_io_class,
 	TP_PROTO(struct xfs_inode *ip, xfs_off_t offset, ssize_t count),