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@xxxxxxxxxxxxx>
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@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
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@xxxxxxxxxxxxx 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
