[PATCH v6 02/51] mm: Print the inode number in dump_page

From: Matthew Wilcox
Date: Wed Jun 10 2020 - 16:14:22 EST


From: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>

The inode number helps correlate this page with debug messages elsewhere
in the kernel.

Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
---
mm/debug.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/mm/debug.c b/mm/debug.c
index 384eef80649d..e30e35b41d0e 100644
--- a/mm/debug.c
+++ b/mm/debug.c
@@ -133,15 +133,16 @@ void __dump_page(struct page *page, const char *reason)
goto out_mapping;
}

- if (probe_kernel_read(&dentry_first,
- &host->i_dentry.first, sizeof(struct hlist_node *))) {
+ if (probe_kernel_read(&dentry_first, &host->i_dentry.first,
+ sizeof(struct hlist_node *))) {
pr_warn("mapping->a_ops:%ps with invalid mapping->host inode address %px\n",
a_ops, host);
goto out_mapping;
}

if (!dentry_first) {
- pr_warn("mapping->a_ops:%ps\n", a_ops);
+ pr_warn("mapping->a_ops:%ps ino %lx\n", a_ops,
+ host->i_ino);
goto out_mapping;
}

@@ -156,8 +157,8 @@ void __dump_page(struct page *page, const char *reason)
* crash, but it's unlikely that we reach here with a
* corrupted struct page
*/
- pr_warn("mapping->aops:%ps dentry name:\"%pd\"\n",
- a_ops, &dentry);
+ pr_warn("mapping->aops:%ps ino %lx dentry name:\"%pd\"\n",
+ a_ops, host->i_ino, &dentry);
}
}
out_mapping:
--
2.26.2