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mm: add large_rmappable page flag

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Stored in the first tail page's flags, this flag replaces the destructor. 
That removes the last of the destructors, so remove all references to
folio_dtor and compound_dtor.

Link: https://lkml.kernel.org/r/20230816151201.3655946-9-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>
This commit is contained in:
Matthew Wilcox (Oracle)
2023-08-16 16:11:56 +01:00
committed by Andrew Morton
parent 9c5ccf2db0
commit de53c05f2a
8 changed files with 11 additions and 28 deletions
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4
Documentation/admin-guide/kdump/vmcoreinfo.rst
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@@ -141,8 +141,8 @@ nodemask_t
The size of a nodemask_t type. Used to compute the number of online
nodes.
(page, flags|_refcount|mapping|lru|_mapcount|private|compound_dtor|compound_order|compound_head)
-------------------------------------------------------------------------------------------------
(page, flags|_refcount|mapping|lru|_mapcount|private|compound_order|compound_head)
----------------------------------------------------------------------------------
User-space tools compute their values based on the offset of these
variables. The variables are used when excluding unnecessary pages.