[PATCH 3/7] mm, page_flags: remove PG_slob_free

From: Vlastimil Babka <vbabka@suse.cz>
To: Christoph Lameter <cl@linux.com>,
	David Rientjes <rientjes@google.com>,
	Joonsoo Kim <iamjoonsoo.kim@lge.com>,
	Pekka Enberg <penberg@kernel.org>
Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com>,
	Roman Gushchin <roman.gushchin@linux.dev>,
	Andrew Morton <akpm@linux-foundation.org>,
	linux-mm@kvack.org, rcu@vger.kernel.org,
	linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
	patches@lists.linux.dev, netdev@vger.kernel.org,
	linux-doc@vger.kernel.org, Vlastimil Babka <vbabka@suse.cz>
Subject: [PATCH 3/7] mm, page_flags: remove PG_slob_free
Date: Fri, 10 Mar 2023 11:32:05 +0100	[thread overview]
Message-ID: <20230310103210.22372-4-vbabka@suse.cz> (raw)
In-Reply-To: <20230310103210.22372-1-vbabka@suse.cz>

With SLOB removed we no longer need the PG_slob_free alias for
PG_private. Also update tools/mm/page-types.

Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
---
 include/linux/page-flags.h | 4 ----
 tools/mm/page-types.c      | 6 +-----
 2 files changed, 1 insertion(+), 9 deletions(-)

diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index a7e3a3405520..2bdc41cb0594 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -174,9 +174,6 @@ enum pageflags {
 	/* Remapped by swiotlb-xen. */
 	PG_xen_remapped = PG_owner_priv_1,
 
-	/* SLOB */
-	PG_slob_free = PG_private,
-
 #ifdef CONFIG_MEMORY_FAILURE
 	/*
 	 * Compound pages. Stored in first tail page's flags.
@@ -483,7 +480,6 @@ PAGEFLAG(Active, active, PF_HEAD) __CLEARPAGEFLAG(Active, active, PF_HEAD)
 PAGEFLAG(Workingset, workingset, PF_HEAD)
 	TESTCLEARFLAG(Workingset, workingset, PF_HEAD)
 __PAGEFLAG(Slab, slab, PF_NO_TAIL)
-__PAGEFLAG(SlobFree, slob_free, PF_NO_TAIL)
 PAGEFLAG(Checked, checked, PF_NO_COMPOUND)	   /* Used by some filesystems */
 
 /* Xen */
diff --git a/tools/mm/page-types.c b/tools/mm/page-types.c
index 381dcc00cb62..8d5595b6c59f 100644
--- a/tools/mm/page-types.c
+++ b/tools/mm/page-types.c
@@ -85,7 +85,6 @@
  */
 #define KPF_ANON_EXCLUSIVE	47
 #define KPF_READAHEAD		48
-#define KPF_SLOB_FREE		49
 #define KPF_SLUB_FROZEN		50
 #define KPF_SLUB_DEBUG		51
 #define KPF_FILE		61
@@ -141,7 +140,6 @@ static const char * const page_flag_names[] = {
 
 	[KPF_ANON_EXCLUSIVE]	= "d:anon_exclusive",
 	[KPF_READAHEAD]		= "I:readahead",
-	[KPF_SLOB_FREE]		= "P:slob_free",
 	[KPF_SLUB_FROZEN]	= "A:slub_frozen",
 	[KPF_SLUB_DEBUG]	= "E:slub_debug",
 
@@ -478,10 +476,8 @@ static uint64_t expand_overloaded_flags(uint64_t flags, uint64_t pme)
 	if ((flags & BIT(ANON)) && (flags & BIT(MAPPEDTODISK)))
 		flags ^= BIT(MAPPEDTODISK) | BIT(ANON_EXCLUSIVE);
 
-	/* SLOB/SLUB overload several page flags */
+	/* SLUB overloads several page flags */
 	if (flags & BIT(SLAB)) {
-		if (flags & BIT(PRIVATE))
-			flags ^= BIT(PRIVATE) | BIT(SLOB_FREE);
 		if (flags & BIT(ACTIVE))
 			flags ^= BIT(ACTIVE) | BIT(SLUB_FROZEN);
 		if (flags & BIT(ERROR))
-- 
2.39.2

