diff mbox series

[v2,2/6] mm, page_flags: remove PG_slob_free

Message ID 20230317104307.29328-3-vbabka@suse.cz (mailing list archive)
State Mainlined, archived
Headers show
Series remove SLOB and allow kfree() with kmem_cache_alloc() | expand

Commit Message

Vlastimil Babka March 17, 2023, 10:43 a.m. UTC 
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>
Acked-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Acked-by: Lorenzo Stoakes <lstoakes@gmail.com>
---
 include/linux/page-flags.h | 4 ----
 tools/mm/page-types.c      | 6 +-----
 2 files changed, 1 insertion(+), 9 deletions(-)

Comments

Mike Rapoport March 17, 2023, 11:50 a.m. UTC | #1 
On Fri, Mar 17, 2023 at 11:43:03AM +0100, Vlastimil Babka wrote:
> 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>
> Acked-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
> Acked-by: Lorenzo Stoakes <lstoakes@gmail.com>

Acked-by: Mike Rapoport (IBM) <rppt@kernel.org>

> ---
>  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
>
diff mbox series

Patch

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))