linux-ext4 - [PATCH] ext4,fiemap: Add inode offset for xattr fiemap

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Message-ID: <20251217084708.494396-1-wangjianjian3@huawei.com>
Date: Wed, 17 Dec 2025 16:47:08 +0800
From: Wang Jianjian <wangjianjian3@...wei.com>
To: <tytso@....edu>
CC: <linux-ext4@...r.kernel.org>, <wangjianjian0@...mail.com>, Wang Jianjian
	<wangjianjian3@...wei.com>
Subject: [PATCH] ext4,fiemap: Add inode offset for xattr fiemap

For xattr in inode, need add inode offset in this block?
Also, there is one problem, if we have xattrs both in inode
and block, current implementation will only return xattr inode fiemap.
Is this by design?

Signed-off-by: Wang Jianjian <wangjianjian3@...wei.com>
---
 fs/ext4/extents.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 2cf5759ba689..a16bfc75345d 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -5043,6 +5043,7 @@ static int ext4_iomap_xattr_fiemap(struct inode *inode, struct iomap *iomap)
 		if (error)
 			return error;
 		physical = (__u64)iloc.bh->b_blocknr << blockbits;
+		physical += iloc.offset;
 		offset = EXT4_GOOD_OLD_INODE_SIZE +
 				EXT4_I(inode)->i_extra_isize;
 		physical += offset;
-- 
2.34.1