JFIF$        dd7 

Viewing File: /usr/src/kernels/5.14.0-570.32.1.el9_6.x86_64/include/linux/page_idle.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_MM_PAGE_IDLE_H
#define _LINUX_MM_PAGE_IDLE_H

#include <linux/bitops.h>
#include <linux/page-flags.h>
#include <linux/page_ext.h>

#ifdef CONFIG_PAGE_IDLE_FLAG

#ifndef CONFIG_64BIT
/*
 * If there is not enough space to store Idle and Young bits in page flags, use
 * page ext flags instead.
 */
static inline bool folio_test_young(struct folio *folio)
{
	struct page_ext *page_ext = page_ext_get(&folio->page);
	bool page_young;

	if (unlikely(!page_ext))
		return false;

	page_young = test_bit(PAGE_EXT_YOUNG, &page_ext->flags);
	page_ext_put(page_ext);

	return page_young;
}

static inline void folio_set_young(struct folio *folio)
{
	struct page_ext *page_ext = page_ext_get(&folio->page);

	if (unlikely(!page_ext))
		return;

	set_bit(PAGE_EXT_YOUNG, &page_ext->flags);
	page_ext_put(page_ext);
}

static inline bool folio_test_clear_young(struct folio *folio)
{
	struct page_ext *page_ext = page_ext_get(&folio->page);
	bool page_young;

	if (unlikely(!page_ext))
		return false;

	page_young = test_and_clear_bit(PAGE_EXT_YOUNG, &page_ext->flags);
	page_ext_put(page_ext);

	return page_young;
}

static inline bool folio_test_idle(struct folio *folio)
{
	struct page_ext *page_ext = page_ext_get(&folio->page);
	bool page_idle;

	if (unlikely(!page_ext))
		return false;

	page_idle =  test_bit(PAGE_EXT_IDLE, &page_ext->flags);
	page_ext_put(page_ext);

	return page_idle;
}

static inline void folio_set_idle(struct folio *folio)
{
	struct page_ext *page_ext = page_ext_get(&folio->page);

	if (unlikely(!page_ext))
		return;

	set_bit(PAGE_EXT_IDLE, &page_ext->flags);
	page_ext_put(page_ext);
}

static inline void folio_clear_idle(struct folio *folio)
{
	struct page_ext *page_ext = page_ext_get(&folio->page);

	if (unlikely(!page_ext))
		return;

	clear_bit(PAGE_EXT_IDLE, &page_ext->flags);
	page_ext_put(page_ext);
}
#endif /* !CONFIG_64BIT */

#else /* !CONFIG_PAGE_IDLE_FLAG */

static inline bool folio_test_young(struct folio *folio)
{
	return false;
}

static inline void folio_set_young(struct folio *folio)
{
}

static inline bool folio_test_clear_young(struct folio *folio)
{
	return false;
}

static inline bool folio_test_idle(struct folio *folio)
{
	return false;
}

static inline void folio_set_idle(struct folio *folio)
{
}

static inline void folio_clear_idle(struct folio *folio)
{
}

#endif /* CONFIG_PAGE_IDLE_FLAG */

static inline bool page_is_young(struct page *page)
{
	return folio_test_young(page_folio(page));
}

static inline void set_page_young(struct page *page)
{
	folio_set_young(page_folio(page));
}

static inline bool test_and_clear_page_young(struct page *page)
{
	return folio_test_clear_young(page_folio(page));
}

static inline bool page_is_idle(struct page *page)
{
	return folio_test_idle(page_folio(page));
}

static inline void set_page_idle(struct page *page)
{
	folio_set_idle(page_folio(page));
}
#endif /* _LINUX_MM_PAGE_IDLE_H */
Back to Directory  nL+D550H?Mx ,D"v]qv;6*Zqn)ZP0!1 A "#a$2Qr D8 a Ri[f\mIykIw0cuFcRı?lO7к_f˓[C$殷WF<_W ԣsKcëIzyQy/_LKℂ;C",pFA:/]=H  ~,ls/9ć:[=/#f;)x{ٛEQ )~ =𘙲r*2~ a _V=' kumFD}KYYC)({ *g&f`툪ry`=^cJ.I](*`wq1dđ#̩͑0;H]u搂@:~וKL Nsh}OIR*8:2 !lDJVo(3=M(zȰ+i*NAr6KnSl)!JJӁ* %݉?|D}d5:eP0R;{$X'xF@.ÊB {,WJuQɲRI;9QE琯62fT.DUJ;*cP A\ILNj!J۱+O\͔]ޒS߼Jȧc%ANolՎprULZԛerE2=XDXgVQeӓk yP7U*omQIs,K`)6\G3t?pgjrmۛجwluGtfh9uyP0D;Uڽ"OXlif$)&|ML0Zrm1[HXPlPR0'G=i2N+0e2]]9VTPO׮7h(F*癈'=QVZDF,d߬~TX G[`le69CR(!S2!P <0x<!1AQ "Raq02Br#SCTb ?Ζ"]mH5WR7k.ۛ!}Q~+yԏz|@T20S~Kek *zFf^2X*(@8r?CIuI|֓>^ExLgNUY+{.RѪ τV׸YTD I62'8Y27'\TP.6d&˦@Vqi|8-OΕ]ʔ U=TL8=;6c| !qfF3aů&~$l}'NWUs$Uk^SV:U# 6w++s&r+nڐ{@29 gL u"TÙM=6(^"7r}=6YݾlCuhquympǦ GjhsǜNlɻ}o7#S6aw4!OSrD57%|?x>L |/nD6?/8w#[)L7+6〼T ATg!%5MmZ/c-{1_Je"|^$'O&ޱմTrb$w)R$& N1EtdU3Uȉ1pM"N*(DNyd96.(jQ)X 5cQɎMyW?Q*!R>6=7)Xj5`J]e8%t!+'!1Q5 !1 AQaqё#2"0BRb?Gt^## .llQT $v,,m㵜5ubV =sY+@d{N! dnO<.-B;_wJt6;QJd.Qc%p{ 1,sNDdFHI0ГoXшe黅XۢF:)[FGXƹ/w_cMeD,ʡcc.WDtA$j@:) -# u c1<@ۗ9F)KJ-hpP]_x[qBlbpʖw q"LFGdƶ*s+ډ_Zc"?%t[IP 6J]#=ɺVvvCGsGh1 >)6|ey?Lӣm,4GWUi`]uJVoVDG< SB6ϏQ@ TiUlyOU0kfV~~}SZ@*WUUi##; s/[=!7}"WN]'(L! ~y5g9T̅JkbM' +s:S +B)v@Mj e Cf jE 0Y\QnzG1д~Wo{T9?`Rmyhsy3!HAD]mc1~2LSu7xT;j$`}4->L#vzŏILS ֭T{rjGKC;bpU=-`BsK.SFw4Mq]ZdHS0)tLg