| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20250827175247.83322-4-shivankg@amd.com>
Date: Wed, 27 Aug 2025 17:52:43 +0000
From: Shivank Garg <shivankg@....com>
To: <willy@...radead.org>, <akpm@...ux-foundation.org>, <david@...hat.com>,
<pbonzini@...hat.com>, <shuah@...nel.org>, <seanjc@...gle.com>,
<vbabka@...e.cz>
CC: <brauner@...nel.org>, <viro@...iv.linux.org.uk>, <dsterba@...e.com>,
<xiang@...nel.org>, <chao@...nel.org>, <jaegeuk@...nel.org>, <clm@...com>,
<josef@...icpanda.com>, <kent.overstreet@...ux.dev>, <zbestahu@...il.com>,
<jefflexu@...ux.alibaba.com>, <dhavale@...gle.com>, <lihongbo22@...wei.com>,
<lorenzo.stoakes@...cle.com>, <Liam.Howlett@...cle.com>, <rppt@...nel.org>,
<surenb@...gle.com>, <mhocko@...e.com>, <ziy@...dia.com>,
<matthew.brost@...el.com>, <joshua.hahnjy@...il.com>, <rakie.kim@...com>,
<byungchul@...com>, <gourry@...rry.net>, <ying.huang@...ux.alibaba.com>,
<apopple@...dia.com>, <tabba@...gle.com>, <ackerleytng@...gle.com>,
<shivankg@....com>, <paul@...l-moore.com>, <jmorris@...ei.org>,
<serge@...lyn.com>, <pvorel@...e.cz>, <bfoster@...hat.com>,
<vannapurve@...gle.com>, <chao.gao@...el.com>, <bharata@....com>,
<nikunj@....com>, <michael.day@....com>, <shdhiman@....com>,
<yan.y.zhao@...el.com>, <Neeraj.Upadhyay@....com>, <thomas.lendacky@....com>,
<michael.roth@....com>, <aik@....com>, <jgg@...dia.com>,
<kalyazin@...zon.com>, <peterx@...hat.com>, <jack@...e.cz>,
<hch@...radead.org>, <cgzones@...glemail.com>, <ira.weiny@...el.com>,
<rientjes@...gle.com>, <roypat@...zon.co.uk>, <chao.p.peng@...el.com>,
<amit@...radead.org>, <ddutile@...hat.com>, <dan.j.williams@...el.com>,
<ashish.kalra@....com>, <gshan@...hat.com>, <jgowans@...zon.com>,
<pankaj.gupta@....com>, <papaluri@....com>, <yuzhao@...gle.com>,
<suzuki.poulose@....com>, <quic_eberman@...cinc.com>,
<linux-bcachefs@...r.kernel.org>, <linux-btrfs@...r.kernel.org>,
<linux-erofs@...ts.ozlabs.org>, <linux-f2fs-devel@...ts.sourceforge.net>,
<linux-fsdevel@...r.kernel.org>, <linux-mm@...ck.org>,
<linux-kernel@...r.kernel.org>, <linux-security-module@...r.kernel.org>,
<kvm@...r.kernel.org>, <linux-kselftest@...r.kernel.org>,
<linux-coco@...ts.linux.dev>
Subject: [PATCH kvm-next V11 1/7] mm/filemap: Add NUMA mempolicy support to filemap_alloc_folio()
From: "Matthew Wilcox (Oracle)" <willy@...radead.org>
Add a mempolicy parameter to filemap_alloc_folio() to enable NUMA-aware
page cache allocations. This will be used by upcoming changes to
support NUMA policies in guest-memfd, where guest_memory need to be
allocated NUMA policy specified by VMM.
All existing users pass NULL maintaining current behavior.
Reviewed-by: Pankaj Gupta <pankaj.gupta@....com>
Reviewed-by: Vlastimil Babka <vbabka@...e.cz>
Signed-off-by: Matthew Wilcox (Oracle) <willy@...radead.org>
Reviewed-by: David Hildenbrand <david@...hat.com>
Signed-off-by: Shivank Garg <shivankg@....com>
---
fs/bcachefs/fs-io-buffered.c | 2 +-
fs/btrfs/compression.c | 4 ++--
fs/btrfs/verity.c | 2 +-
fs/erofs/zdata.c | 2 +-
fs/f2fs/compress.c | 2 +-
include/linux/pagemap.h | 8 +++++---
mm/filemap.c | 14 +++++++++-----
mm/readahead.c | 2 +-
8 files changed, 21 insertions(+), 15 deletions(-)
diff --git a/fs/bcachefs/fs-io-buffered.c b/fs/bcachefs/fs-io-buffered.c
index 1c54b9b5bd69..3af2eabb7ed3 100644
--- a/fs/bcachefs/fs-io-buffered.c
+++ b/fs/bcachefs/fs-io-buffered.c
@@ -124,7 +124,7 @@ static int readpage_bio_extend(struct btree_trans *trans,
if (folio && !xa_is_value(folio))
break;
- folio = filemap_alloc_folio(readahead_gfp_mask(iter->mapping), order);
+ folio = filemap_alloc_folio(readahead_gfp_mask(iter->mapping), order, NULL);
if (!folio)
break;
diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index d09d622016ef..139f9609e737 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -474,8 +474,8 @@ static noinline int add_ra_bio_pages(struct inode *inode,
continue;
}
- folio = filemap_alloc_folio(mapping_gfp_constraint(mapping,
- ~__GFP_FS), 0);
+ folio = filemap_alloc_folio(mapping_gfp_constraint(mapping, ~__GFP_FS),
+ 0, NULL);
if (!folio)
break;
diff --git a/fs/btrfs/verity.c b/fs/btrfs/verity.c
index b7a96a005487..c43a789ba6d2 100644
--- a/fs/btrfs/verity.c
+++ b/fs/btrfs/verity.c
@@ -742,7 +742,7 @@ static struct page *btrfs_read_merkle_tree_page(struct inode *inode,
}
folio = filemap_alloc_folio(mapping_gfp_constraint(inode->i_mapping, ~__GFP_FS),
- 0);
+ 0, NULL);
if (!folio)
return ERR_PTR(-ENOMEM);
diff --git a/fs/erofs/zdata.c b/fs/erofs/zdata.c
index 2d73297003d2..e9a1bf7568c9 100644
--- a/fs/erofs/zdata.c
+++ b/fs/erofs/zdata.c
@@ -562,7 +562,7 @@ static void z_erofs_bind_cache(struct z_erofs_frontend *fe)
* Allocate a managed folio for cached I/O, or it may be
* then filled with a file-backed folio for in-place I/O
*/
- newfolio = filemap_alloc_folio(gfp, 0);
+ newfolio = filemap_alloc_folio(gfp, 0, NULL);
if (!newfolio)
continue;
newfolio->private = Z_EROFS_PREALLOCATED_FOLIO;
diff --git a/fs/f2fs/compress.c b/fs/f2fs/compress.c
index 5c1f47e45dab..56a51c9ba4f1 100644
--- a/fs/f2fs/compress.c
+++ b/fs/f2fs/compress.c
@@ -1942,7 +1942,7 @@ static void f2fs_cache_compressed_page(struct f2fs_sb_info *sbi,
return;
}
- cfolio = filemap_alloc_folio(__GFP_NOWARN | __GFP_IO, 0);
+ cfolio = filemap_alloc_folio(__GFP_NOWARN | __GFP_IO, 0, NULL);
if (!cfolio)
return;
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index 12a12dae727d..ce617a35dc35 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -646,9 +646,11 @@ static inline void *detach_page_private(struct page *page)
}
#ifdef CONFIG_NUMA
-struct folio *filemap_alloc_folio_noprof(gfp_t gfp, unsigned int order);
+struct folio *filemap_alloc_folio_noprof(gfp_t gfp, unsigned int order,
+ struct mempolicy *policy);
#else
-static inline struct folio *filemap_alloc_folio_noprof(gfp_t gfp, unsigned int order)
+static inline struct folio *filemap_alloc_folio_noprof(gfp_t gfp, unsigned int order,
+ struct mempolicy *policy)
{
return folio_alloc_noprof(gfp, order);
}
@@ -659,7 +661,7 @@ static inline struct folio *filemap_alloc_folio_noprof(gfp_t gfp, unsigned int o
static inline struct page *__page_cache_alloc(gfp_t gfp)
{
- return &filemap_alloc_folio(gfp, 0)->page;
+ return &filemap_alloc_folio(gfp, 0, NULL)->page;
}
static inline gfp_t readahead_gfp_mask(struct address_space *x)
diff --git a/mm/filemap.c b/mm/filemap.c
index 751838ef05e5..495f7f5c3d2e 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -989,11 +989,16 @@ int filemap_add_folio(struct address_space *mapping, struct folio *folio,
EXPORT_SYMBOL_GPL(filemap_add_folio);
#ifdef CONFIG_NUMA
-struct folio *filemap_alloc_folio_noprof(gfp_t gfp, unsigned int order)
+struct folio *filemap_alloc_folio_noprof(gfp_t gfp, unsigned int order,
+ struct mempolicy *policy)
{
int n;
struct folio *folio;
+ if (policy)
+ return folio_alloc_mpol_noprof(gfp, order, policy,
+ NO_INTERLEAVE_INDEX, numa_node_id());
+
if (cpuset_do_page_mem_spread()) {
unsigned int cpuset_mems_cookie;
do {
@@ -1978,7 +1983,7 @@ struct folio *__filemap_get_folio(struct address_space *mapping, pgoff_t index,
err = -ENOMEM;
if (order > min_order)
alloc_gfp |= __GFP_NORETRY | __GFP_NOWARN;
- folio = filemap_alloc_folio(alloc_gfp, order);
+ folio = filemap_alloc_folio(alloc_gfp, order, NULL);
if (!folio)
continue;
@@ -2517,7 +2522,7 @@ static int filemap_create_folio(struct kiocb *iocb, struct folio_batch *fbatch)
if (iocb->ki_flags & (IOCB_NOWAIT | IOCB_WAITQ))
return -EAGAIN;
- folio = filemap_alloc_folio(mapping_gfp_mask(mapping), min_order);
+ folio = filemap_alloc_folio(mapping_gfp_mask(mapping), min_order, NULL);
if (!folio)
return -ENOMEM;
if (iocb->ki_flags & IOCB_DONTCACHE)
@@ -3916,8 +3921,7 @@ static struct folio *do_read_cache_folio(struct address_space *mapping,
repeat:
folio = filemap_get_folio(mapping, index);
if (IS_ERR(folio)) {
- folio = filemap_alloc_folio(gfp,
- mapping_min_folio_order(mapping));
+ folio = filemap_alloc_folio(gfp, mapping_min_folio_order(mapping), NULL);
if (!folio)
return ERR_PTR(-ENOMEM);
index = mapping_align_index(mapping, index);
diff --git a/mm/readahead.c b/mm/readahead.c
index 406756d34309..a4dfa837dfbd 100644
--- a/mm/readahead.c
+++ b/mm/readahead.c
@@ -183,7 +183,7 @@ static struct folio *ractl_alloc_folio(struct readahead_control *ractl,
{
struct folio *folio;
- folio = filemap_alloc_folio(gfp_mask, order);
+ folio = filemap_alloc_folio(gfp_mask, order, NULL);
if (folio && ractl->dropbehind)
__folio_set_dropbehind(folio);
--
2.43.0
Powered by blists - more mailing lists