linux-kernel - [PATCH v4 3/5] erofs: make the size of read data stored in buffer

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Message-Id: <20230531031330.3504-4-jefflexu@linux.alibaba.com>
Date:   Wed, 31 May 2023 11:13:28 +0800
From:   Jingbo Xu <jefflexu@...ux.alibaba.com>
To:     xiang@...nel.org, chao@...nel.org, huyue2@...lpad.com,
        linux-erofs@...ts.ozlabs.org
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH v4 3/5] erofs: make the size of read data stored in buffer_ofs

Since now xattr_iter structures have been unified, make the size of the
read data stored in buffer_ofs.  Don't bother reusing buffer_size for
this use, which may be confusing.

This is in preparation for the following further cleanup.

Signed-off-by: Jingbo Xu <jefflexu@...ux.alibaba.com>
---
 fs/erofs/xattr.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/fs/erofs/xattr.c b/fs/erofs/xattr.c
index dffca38a46fd..7c76b4d31920 100644
--- a/fs/erofs/xattr.c
+++ b/fs/erofs/xattr.c
@@ -337,7 +337,7 @@ static int xattr_checkbuffer(struct erofs_xattr_iter *it,
 {
 	int err = it->buffer_size < value_sz ? -ERANGE : 0;
 
-	it->buffer_size = value_sz;
+	it->buffer_ofs = value_sz;
 	return !it->buffer ? 1 : err;
 }
 
@@ -370,7 +370,7 @@ static int inline_getxattr(struct inode *inode, struct erofs_xattr_iter *it)
 		if (ret != -ENOATTR)
 			break;
 	}
-	return ret ? ret : it->buffer_size;
+	return ret ? ret : it->buffer_ofs;
 }
 
 static int shared_getxattr(struct inode *inode, struct erofs_xattr_iter *it)
@@ -392,7 +392,7 @@ static int shared_getxattr(struct inode *inode, struct erofs_xattr_iter *it)
 		if (ret != -ENOATTR)
 			break;
 	}
-	return ret ? ret : it->buffer_size;
+	return ret ? ret : it->buffer_ofs;
 }
 
 static bool erofs_xattr_user_list(struct dentry *dentry)
-- 
2.19.1.6.gb485710b