+ mm-remove-fgp_head.patch added to mm-unstable branch

+ mm-remove-fgp_head.patch added to mm-unstable branch

[Andrew Morton]

The patch titled
     Subject: mm: remove FGP_HEAD
has been added to the -mm mm-unstable branch.  Its filename is
     mm-remove-fgp_head.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-remove-fgp_head.patch

This patch will later appear in the mm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Subject: mm: remove FGP_HEAD
Date: Wed, 19 Oct 2022 19:33:32 +0100

This is no longer used; all callers have been converted to use folios
instead.  Somehow this manages to save 11 bytes of text.

Link: https://lkml.kernel.org/r/20221019183332.2802139-5-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 include/linux/pagemap.h |    5 ++---
 mm/folio-compat.c       |    2 +-
 2 files changed, 3 insertions(+), 4 deletions(-)

--- a/include/linux/pagemap.h~mm-remove-fgp_head
+++ a/include/linux/pagemap.h
@@ -504,9 +504,8 @@ pgoff_t page_cache_prev_miss(struct addr
 #define FGP_NOFS		0x00000010
 #define FGP_NOWAIT		0x00000020
 #define FGP_FOR_MMAP		0x00000040
-#define FGP_HEAD		0x00000080
-#define FGP_ENTRY		0x00000100
-#define FGP_STABLE		0x00000200
+#define FGP_ENTRY		0x00000080
+#define FGP_STABLE		0x00000100
 
 struct folio *__filemap_get_folio(struct address_space *mapping, pgoff_t index,
 		int fgp_flags, gfp_t gfp);
--- a/mm/folio-compat.c~mm-remove-fgp_head
+++ a/mm/folio-compat.c
@@ -108,7 +108,7 @@ struct page *pagecache_get_page(struct a
 	struct folio *folio;
 
 	folio = __filemap_get_folio(mapping, index, fgp_flags, gfp);
-	if ((fgp_flags & FGP_HEAD) || !folio || xa_is_value(folio))
+	if (!folio || xa_is_value(folio))
 		return &folio->page;
 	return folio_file_page(folio, index);
 }
_

Patches currently in -mm which might be from willy@infradead.org are

mm-huge_memory-convert-split_huge_pages_in_file-to-use-a-folio.patch
mm-swap-convert-find_get_incore_page-to-use-folios.patch
mm-convert-find_get_incore_page-to-filemap_get_incore_folio.patch
mm-remove-fgp_head.patch