From: Li Chen <me@linux.beauty>
Date: Fri, 6 Mar 2026 08:56:39 +0000 (+0800)
Subject: jbd2: add jinode dirty range accessors
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=5267f6ef49cb5fba426f2d286817b1355fde31da;p=thirdparty%2Fkernel%2Flinux.git

jbd2: add jinode dirty range accessors

Provide a helper to fetch jinode dirty ranges in bytes. This lets
filesystem callbacks avoid depending on the internal representation,
preparing for a later conversion to page units.

Suggested-by: Andreas Dilger <adilger@dilger.ca>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Li Chen <me@linux.beauty>
Link: https://patch.msgid.link/20260306085643.465275-2-me@linux.beauty
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
---

diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
index a53a00d36228c..64392baf5f4b4 100644
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -445,6 +445,20 @@ struct jbd2_inode {
 	loff_t i_dirty_end;
 };
 
+static inline bool jbd2_jinode_get_dirty_range(const struct jbd2_inode *jinode,
+					       loff_t *start, loff_t *end)
+{
+	loff_t start_byte = jinode->i_dirty_start;
+	loff_t end_byte = jinode->i_dirty_end;
+
+	if (!end_byte)
+		return false;
+
+	*start = start_byte;
+	*end = end_byte;
+	return true;
+}
+
 struct jbd2_revoke_table_s;
 
 /**