From 878520ac45f9f698432d4276db3d9144b83931b6 Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Tue, 19 Nov 2019 21:54:15 -0500 Subject: ext4: save the error code which triggered an ext4_error() in the superblock This allows the cause of an ext4_error() report to be categorized based on whether it was triggered due to an I/O error, or an memory allocation error, or other possible causes. Most errors are caused by a detected file system inconsistency, so the default code stored in the superblock will be EXT4_ERR_EFSCORRUPTED. Link: https://lore.kernel.org/r/20191204032335.7683-1-tytso@mit.edu Signed-off-by: Theodore Ts'o --- fs/ext4/ext4_jbd2.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'fs/ext4/ext4_jbd2.c') diff --git a/fs/ext4/ext4_jbd2.c b/fs/ext4/ext4_jbd2.c index d3b8cdea5df7..19217a3f1ae4 100644 --- a/fs/ext4/ext4_jbd2.c +++ b/fs/ext4/ext4_jbd2.c @@ -58,6 +58,7 @@ static int ext4_journal_check_start(struct super_block *sb) * take the FS itself readonly cleanly. */ if (journal && is_journal_aborted(journal)) { + ext4_set_errno(sb, -journal->j_errno); ext4_abort(sb, "Detected aborted journal"); return -EROFS; } @@ -249,6 +250,7 @@ int __ext4_forget(const char *where, unsigned int line, handle_t *handle, if (err) { ext4_journal_abort_handle(where, line, __func__, bh, handle, err); + ext4_set_errno(inode->i_sb, -err); __ext4_abort(inode->i_sb, where, line, "error %d when attempting revoke", err); } @@ -320,6 +322,7 @@ int __ext4_handle_dirty_metadata(const char *where, unsigned int line, es = EXT4_SB(inode->i_sb)->s_es; es->s_last_error_block = cpu_to_le64(bh->b_blocknr); + ext4_set_errno(inode->i_sb, EIO); ext4_error_inode(inode, where, line, bh->b_blocknr, "IO error syncing itable block"); -- cgit v1.2.3