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authorMatthew Wilcox (Oracle) <willy@infradead.org>2023-08-16 16:11:58 +0100
committerAndrew Morton <akpm@linux-foundation.org>2023-08-21 14:28:45 -0700
commitebc1baf5c9b46c2240c580a2fd992b2e48606dfa (patch)
treec85f3ec8285498ef68bc6f63cdf63825647391d4 /kernel/crash_core.c
parentc704ae9797843402436190a6f094a035237fd012 (diff)
mm: free up a word in the first tail page
Store the folio order in the low byte of the flags word in the first tail page. This frees up the word that was being used to store the order and dtor bytes previously. Link: https://lkml.kernel.org/r/20230816151201.3655946-11-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: David Hildenbrand <david@redhat.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com> Cc: Yanteng Si <siyanteng@loongson.cn> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'kernel/crash_core.c')
-rw-r--r--kernel/crash_core.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/kernel/crash_core.c b/kernel/crash_core.c
index 934dd86e19f5..693445e1f7f6 100644
--- a/kernel/crash_core.c
+++ b/kernel/crash_core.c
@@ -455,7 +455,6 @@ static int __init crash_save_vmcoreinfo_init(void)
VMCOREINFO_OFFSET(page, lru);
VMCOREINFO_OFFSET(page, _mapcount);
VMCOREINFO_OFFSET(page, private);
- VMCOREINFO_OFFSET(folio, _folio_order);
VMCOREINFO_OFFSET(page, compound_head);
VMCOREINFO_OFFSET(pglist_data, node_zones);
VMCOREINFO_OFFSET(pglist_data, nr_zones);