From: Darrick J. Wong <djwong@kernel.org>
Date: Tue, 7 Mar 2023 03:56:24 +0000 (-0800)
Subject: xfs: enable extent size hints for CoW operations
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=f99ef4e69f10bb049aa216b3dabb5a948800cb60;p=users%2Fhch%2Fxfsprogs.git

xfs: enable extent size hints for CoW operations

Wire up the copy-on-write extent size hint for realtime files, and
connect it to the rt allocator so that we avoid fragmentation on rt
filesystems.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
---

diff --git a/libxfs/xfs_bmap.c b/libxfs/xfs_bmap.c
index da045a672..883ff111b 100644
--- a/libxfs/xfs_bmap.c
+++ b/libxfs/xfs_bmap.c
@@ -6408,7 +6408,13 @@ xfs_get_cowextsz_hint(
 	a = 0;
 	if (ip->i_diflags2 & XFS_DIFLAG2_COWEXTSIZE)
 		a = ip->i_cowextsize;
-	b = xfs_get_extsz_hint(ip);
+	if (XFS_IS_REALTIME_INODE(ip)) {
+		b = 0;
+		if (ip->i_diflags & XFS_DIFLAG_EXTSIZE)
+			b = ip->i_extsize;
+	} else {
+		b = xfs_get_extsz_hint(ip);
+	}
 
 	a = max(a, b);
 	if (a == 0)