Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
mm: remove page_ref_sub_return()
With all callers converted to folios, we can act directly on
folio->_refcount.
Link: https://lkml.kernel.org/r/20240424191914.361554-5-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
authored by
Matthew Wilcox (Oracle)
and committed by
Andrew Morton
498aefbc
53e45c4f
+5
-10
+5
-10
include/linux/page_ref.h
+5
-10
include/linux/page_ref.h
···
139
139
page_ref_sub(&folio->page, nr);
140
140
}
141
141
142
-
static inline int page_ref_sub_return(struct page *page, int nr)
143
-
{
144
-
int ret = atomic_sub_return(nr, &page->_refcount);
145
-
146
-
if (page_ref_tracepoint_active(page_ref_mod_and_return))
147
-
__page_ref_mod_and_return(page, -nr, ret);
148
-
return ret;
149
-
}
150
-
151
142
static inline int folio_ref_sub_return(struct folio *folio, int nr)
152
143
{
153
-
return page_ref_sub_return(&folio->page, nr);
144
+
int ret = atomic_sub_return(nr, &folio->_refcount);
145
+
146
+
if (page_ref_tracepoint_active(page_ref_mod_and_return))
147
+
__page_ref_mod_and_return(&folio->page, -nr, ret);
148
+
return ret;
154
149
}
155
150
156
151
static inline void page_ref_inc(struct page *page)