linux-kernel - [PATCH v4 11/14] xfs: Only free full extents for forcealign

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Message-Id: <20240813163638.3751939-12-john.g.garry@oracle.com>
Date: Tue, 13 Aug 2024 16:36:35 +0000
From: John Garry <john.g.garry@...cle.com>
To: chandan.babu@...cle.com, djwong@...nel.org, dchinner@...hat.com,
        hch@....de
Cc: viro@...iv.linux.org.uk, brauner@...nel.org, jack@...e.cz,
        linux-xfs@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, catherine.hoang@...cle.com,
        martin.petersen@...cle.com, John Garry <john.g.garry@...cle.com>
Subject: [PATCH v4 11/14] xfs: Only free full extents for forcealign

Like we already do for rtvol, only free full extents for forcealign in
xfs_free_file_space().

Reviewed-by: "Darrick J. Wong" <djwong@...nel.org> #earlier version
Signed-off-by: John Garry <john.g.garry@...cle.com>
---
 fs/xfs/xfs_bmap_util.c |  8 +++-----
 fs/xfs/xfs_inode.c     | 12 ++++++++++++
 fs/xfs/xfs_inode.h     |  2 ++
 3 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c
index 7a51859eaf84..317ce8947e8d 100644
--- a/fs/xfs/xfs_bmap_util.c
+++ b/fs/xfs/xfs_bmap_util.c
@@ -851,11 +851,9 @@ xfs_free_file_space(
 	startoffset_fsb = XFS_B_TO_FSB(mp, offset);
 	endoffset_fsb = XFS_B_TO_FSBT(mp, offset + len);
 
-	/* We can only free complete realtime extents. */
-	if (xfs_inode_has_bigrtalloc(ip)) {
-		startoffset_fsb = xfs_rtb_roundup_rtx(mp, startoffset_fsb);
-		endoffset_fsb = xfs_rtb_rounddown_rtx(mp, endoffset_fsb);
-	}
+	/* Free only complete extents. */
+	startoffset_fsb = xfs_inode_roundup_alloc_unit(ip, startoffset_fsb);
+	endoffset_fsb = xfs_inode_rounddown_alloc_unit(ip, endoffset_fsb);
 
 	/*
 	 * Need to zero the stuff we're not freeing, on disk.
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 94ab3f4d6cef..73562c6f9a1d 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -3141,6 +3141,18 @@ xfs_inode_roundup_alloc_unit(
 	return roundup_64(offset, rounding);
 }
 
+xfs_fileoff_t
+xfs_inode_rounddown_alloc_unit(
+	struct xfs_inode	*ip,
+	xfs_fileoff_t		offset)
+{
+	unsigned int		rounding = xfs_inode_alloc_fsbsize(ip);
+
+	if (rounding == 1)
+		return offset;
+	return rounddown_64(offset, rounding);
+}
+
 /* Should we always be using copy on write for file writes? */
 bool
 xfs_is_always_cow_inode(
diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h
index 71acddb8061d..336124105c47 100644
--- a/fs/xfs/xfs_inode.h
+++ b/fs/xfs/xfs_inode.h
@@ -645,6 +645,8 @@ unsigned int xfs_inode_alloc_fsbsize(struct xfs_inode *ip);
 unsigned int xfs_inode_alloc_unitsize(struct xfs_inode *ip);
 xfs_fileoff_t xfs_inode_roundup_alloc_unit(struct xfs_inode *ip,
 		xfs_fileoff_t offset);
+xfs_fileoff_t xfs_inode_rounddown_alloc_unit(struct xfs_inode *ip,
+		xfs_fileoff_t offset);
 
 int xfs_icreate_dqalloc(const struct xfs_icreate_args *args,
 		struct xfs_dquot **udqpp, struct xfs_dquot **gdqpp,
-- 
2.31.1