From: Wengang Wang <wen.gang.wang@oracle.com>
Date: Fri, 31 Oct 2025 21:05:01 +0000 (-0700)
Subject: jbd2: store more accurate errno in superblock when possible
X-Git-Tag: v6.19-rc1~161^2~38
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=80d05f640a51f94b88640db7f1551f8e8fee44b9;p=thirdparty%2Flinux.git

jbd2: store more accurate errno in superblock when possible

When jbd2_journal_abort() is called, the provided error code is stored
in the journal superblock. Some existing calls hard-code -EIO even when
the actual failure is not I/O related.

This patch updates those calls to pass more accurate error codes,
allowing the superblock to record the true cause of failure. This helps
improve diagnostics and debugging clarity when analyzing journal aborts.

Signed-off-by: Wengang Wang <wen.gang.wang@oracle.com>
Reviewed-by: Zhang Yi <yi.zhang@huawei.com>
Message-ID: <20251031210501.7337-1-wen.gang.wang@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
---

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 760c9d7588be8..7de15249e8267 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -698,7 +698,7 @@ static void ext4_handle_error(struct super_block *sb, bool force_ro, int error,
 		WARN_ON_ONCE(1);
 
 	if (!continue_fs && !ext4_emergency_ro(sb) && journal)
-		jbd2_journal_abort(journal, -EIO);
+		jbd2_journal_abort(journal, -error);
 
 	if (!bdev_read_only(sb->s_bdev)) {
 		save_error_info(sb, error, ino, block, func, line);
@@ -5843,7 +5843,7 @@ static int ext4_journal_bmap(journal_t *journal, sector_t *block)
 		ext4_msg(journal->j_inode->i_sb, KERN_CRIT,
 			 "journal bmap failed: block %llu ret %d\n",
 			 *block, ret);
-		jbd2_journal_abort(journal, ret ? ret : -EIO);
+		jbd2_journal_abort(journal, ret ? ret : -EFSCORRUPTED);
 		return ret;
 	}
 	*block = map.m_pblk;
diff --git a/fs/jbd2/checkpoint.c b/fs/jbd2/checkpoint.c
index 2d0719bf6d87c..de89c5bef6074 100644
--- a/fs/jbd2/checkpoint.c
+++ b/fs/jbd2/checkpoint.c
@@ -113,7 +113,7 @@ __releases(&journal->j_state_lock)
 				       "journal space in %s\n", __func__,
 				       journal->j_devname);
 				WARN_ON(1);
-				jbd2_journal_abort(journal, -EIO);
+				jbd2_journal_abort(journal, -ENOSPC);
 			}
 			write_lock(&journal->j_state_lock);
 		} else {
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index f43474002f50f..2fe1786a8f1b8 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -937,8 +937,8 @@ int jbd2_journal_bmap(journal_t *journal, unsigned long blocknr,
 			printk(KERN_ALERT "%s: journal block not found "
 					"at offset %lu on %s\n",
 			       __func__, blocknr, journal->j_devname);
+			jbd2_journal_abort(journal, ret ? ret : -EFSCORRUPTED);
 			err = -EIO;
-			jbd2_journal_abort(journal, err);
 		} else {
 			*retp = block;
 		}
@@ -1859,8 +1859,9 @@ int jbd2_journal_update_sb_log_tail(journal_t *journal, tid_t tail_tid,
 
 	if (is_journal_aborted(journal))
 		return -EIO;
-	if (jbd2_check_fs_dev_write_error(journal)) {
-		jbd2_journal_abort(journal, -EIO);
+	ret = jbd2_check_fs_dev_write_error(journal);
+	if (ret) {
+		jbd2_journal_abort(journal, ret);
 		return -EIO;
 	}
 
@@ -2157,9 +2158,11 @@ int jbd2_journal_destroy(journal_t *journal)
 	 * failed to write back to the original location, otherwise the
 	 * filesystem may become inconsistent.
 	 */
-	if (!is_journal_aborted(journal) &&
-	    jbd2_check_fs_dev_write_error(journal))
-		jbd2_journal_abort(journal, -EIO);
+	if (!is_journal_aborted(journal)) {
+		int ret = jbd2_check_fs_dev_write_error(journal);
+		if (ret)
+			jbd2_journal_abort(journal, ret);
+	}
 
 	if (journal->j_sb_buffer) {
 		if (!is_journal_aborted(journal)) {
diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c
index 653ee540c4a1b..dca4b5d8aaaa3 100644
--- a/fs/jbd2/transaction.c
+++ b/fs/jbd2/transaction.c
@@ -1219,7 +1219,8 @@ int jbd2_journal_get_write_access(handle_t *handle, struct buffer_head *bh)
 		return -EROFS;
 
 	journal = handle->h_transaction->t_journal;
-	if (jbd2_check_fs_dev_write_error(journal)) {
+	rc = jbd2_check_fs_dev_write_error(journal);
+	if (rc) {
 		/*
 		 * If the fs dev has writeback errors, it may have failed
 		 * to async write out metadata buffers in the background.
@@ -1227,7 +1228,7 @@ int jbd2_journal_get_write_access(handle_t *handle, struct buffer_head *bh)
 		 * it out again, which may lead to on-disk filesystem
 		 * inconsistency. Aborting journal can avoid it happen.
 		 */
-		jbd2_journal_abort(journal, -EIO);
+		jbd2_journal_abort(journal, rc);
 		return -EIO;
 	}