Thanks to everyone for your feedback on v1. I haven't added any acks from v1 because most of the patches have changed substantially from v1. Here's a sample dump of a pagecache tail page with all of the patches applied: page:000000006d1c49ca refcount:6 mapcount:0 mapping:00000000136b8d90 index:0x109 pfn:0x6c645 head:000000008bd38076 order:2 compound_mapcount:0 compound_pincount:0 aops:xfs_address_space_operations ino:800042 dentry name:"fd" flags: 0x4000000000012014(uptodate|lru|private|head) raw: 4000000000000000 ffffd46ac1b19101 ffffffff00000202 dead000000000004 raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000 head: 4000000000012014 ffffd46ac1b1bbc8 ffffd46ac1b1bc08 ffff91976f659560 head: 0000000000000108 ffff919773220680 00000006ffffffff 0000000000000000 page dumped because: testing Matthew Wilcox (Oracle) (6): mm: Handle page->mapping better in dump_page mm: Dump compound page information on a second line mm: Print head flags in dump_page mm: Switch dump_page to get_kernel_nofault mm: Print the inode number in dump_page mm: Print hashed address of struct page mm/debug.c | 75 +++++++++++++++++++++++++----------------------------- 1 file changed, 35 insertions(+), 40 deletions(-) -- 2.27.0
