| 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: <20201216182335.27227-10-willy@infradead.org>
Date: Wed, 16 Dec 2020 18:23:19 +0000
From: "Matthew Wilcox (Oracle)" <willy@...radead.org>
To: linux-fsdevel@...r.kernel.org, linux-mm@...ck.org
Cc: "Matthew Wilcox (Oracle)" <willy@...radead.org>,
linux-kernel@...r.kernel.org
Subject: [PATCH 09/25] mm: Convert __page_cache_alloc to return a folio
Most of the users turn it back into a struct page pointer, but
some can make use of it as a folio immediately.
Signed-off-by: Matthew Wilcox (Oracle) <willy@...radead.org>
---
fs/afs/dir.c | 2 +-
fs/btrfs/compression.c | 4 ++--
fs/cachefiles/rdwr.c | 6 ++++--
fs/ceph/addr.c | 2 +-
fs/ceph/file.c | 2 +-
include/linux/pagemap.h | 8 ++++----
mm/filemap.c | 16 ++++++++--------
mm/readahead.c | 2 +-
net/ceph/pagelist.c | 4 ++--
net/ceph/pagevec.c | 2 +-
10 files changed, 25 insertions(+), 23 deletions(-)
diff --git a/fs/afs/dir.c b/fs/afs/dir.c
index 9068d5578a26..52e9da468787 100644
--- a/fs/afs/dir.c
+++ b/fs/afs/dir.c
@@ -272,7 +272,7 @@ static struct afs_read *afs_read_dir(struct afs_vnode *dvnode, struct key *key)
afs_stat_v(dvnode, n_inval);
ret = -ENOMEM;
- req->pages[i] = __page_cache_alloc(gfp);
+ req->pages[i] = &__page_cache_alloc(gfp, 0)->page;
if (!req->pages[i])
goto error;
ret = add_to_page_cache_lru(req->pages[i],
diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index 5ae3fa0386b7..3309a973b678 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -532,8 +532,8 @@ static noinline int add_ra_bio_pages(struct inode *inode,
goto next;
}
- page = __page_cache_alloc(mapping_gfp_constraint(mapping,
- ~__GFP_FS));
+ page = &__page_cache_alloc(mapping_gfp_constraint(mapping,
+ ~__GFP_FS), 0)->page;
if (!page)
break;
diff --git a/fs/cachefiles/rdwr.c b/fs/cachefiles/rdwr.c
index 8bda092e60c5..268fbcac4afb 100644
--- a/fs/cachefiles/rdwr.c
+++ b/fs/cachefiles/rdwr.c
@@ -260,7 +260,7 @@ static int cachefiles_read_backing_file_one(struct cachefiles_object *object,
goto backing_page_already_present;
if (!newpage) {
- newpage = __page_cache_alloc(cachefiles_gfp);
+ newpage = &__page_cache_alloc(cachefiles_gfp, 0)->page;
if (!newpage)
goto nomem_monitor;
}
@@ -497,7 +497,9 @@ static int cachefiles_read_backing_file(struct cachefiles_object *object,
goto backing_page_already_present;
if (!newpage) {
- newpage = __page_cache_alloc(cachefiles_gfp);
+ struct folio *folio;
+ folio = __page_cache_alloc(cachefiles_gfp, 0);
+ newpage = &folio->page;
if (!newpage)
goto nomem;
}
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index 950552944436..5b2873b12904 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -1760,7 +1760,7 @@ int ceph_uninline_data(struct file *filp, struct page *locked_page)
if (len > PAGE_SIZE)
len = PAGE_SIZE;
} else {
- page = __page_cache_alloc(GFP_NOFS);
+ page = &__page_cache_alloc(GFP_NOFS, 0)->page;
if (!page) {
err = -ENOMEM;
goto out;
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 209535d5b8d3..f8e1482ea7c1 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -1587,7 +1587,7 @@ static ssize_t ceph_read_iter(struct kiocb *iocb, struct iov_iter *to)
struct page *page = NULL;
loff_t i_size;
if (retry_op == READ_INLINE) {
- page = __page_cache_alloc(GFP_KERNEL);
+ page = &__page_cache_alloc(GFP_KERNEL, 0)->page;
if (!page)
return -ENOMEM;
}
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index 5acebbb75d41..317f17e98412 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -282,17 +282,17 @@ static inline void *detach_page_private(struct page *page)
}
#ifdef CONFIG_NUMA
-extern struct page *__page_cache_alloc(gfp_t gfp);
+extern struct folio *__page_cache_alloc(gfp_t gfp, unsigned int order);
#else
-static inline struct page *__page_cache_alloc(gfp_t gfp)
+static inline struct folio *__page_cache_alloc(gfp_t gfp, unsigned int order)
{
- return alloc_pages(gfp, 0);
+ return alloc_folio(gfp, order);
}
#endif
static inline struct page *page_cache_alloc(struct address_space *x)
{
- return __page_cache_alloc(mapping_gfp_mask(x));
+ return &__page_cache_alloc(mapping_gfp_mask(x), 0)->page;
}
static inline gfp_t readahead_gfp_mask(struct address_space *x)
diff --git a/mm/filemap.c b/mm/filemap.c
index dd26b50e3676..6012e8a7bd6c 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -960,22 +960,22 @@ int add_to_page_cache_lru(struct page *page, struct address_space *mapping,
EXPORT_SYMBOL_GPL(add_to_page_cache_lru);
#ifdef CONFIG_NUMA
-struct page *__page_cache_alloc(gfp_t gfp)
+struct folio *__page_cache_alloc(gfp_t gfp, unsigned int order)
{
int n;
- struct page *page;
+ struct folio *folio;
if (cpuset_do_page_mem_spread()) {
unsigned int cpuset_mems_cookie;
do {
cpuset_mems_cookie = read_mems_allowed_begin();
n = cpuset_mem_spread_node();
- page = __alloc_pages_node(n, gfp, 0);
- } while (!page && read_mems_allowed_retry(cpuset_mems_cookie));
+ folio = __alloc_folio_node(n, gfp, order);
+ } while (!folio && read_mems_allowed_retry(cpuset_mems_cookie));
- return page;
+ return folio;
}
- return alloc_pages(gfp, 0);
+ return alloc_folio(gfp, order);
}
EXPORT_SYMBOL(__page_cache_alloc);
#endif
@@ -1801,7 +1801,7 @@ struct page *pagecache_get_page(struct address_space *mapping, pgoff_t index,
if (fgp_flags & FGP_NOFS)
gfp_mask &= ~__GFP_FS;
- page = __page_cache_alloc(gfp_mask);
+ page = &__page_cache_alloc(gfp_mask, 0)->page;
if (!page)
return NULL;
@@ -3192,7 +3192,7 @@ static struct page *do_read_cache_page(struct address_space *mapping,
repeat:
page = find_get_page(mapping, index);
if (!page) {
- page = __page_cache_alloc(gfp);
+ page = &__page_cache_alloc(gfp, 0)->page;
if (!page)
return ERR_PTR(-ENOMEM);
err = add_to_page_cache_lru(page, mapping, index, gfp);
diff --git a/mm/readahead.c b/mm/readahead.c
index c5b0457415be..d7a5424e3d0d 100644
--- a/mm/readahead.c
+++ b/mm/readahead.c
@@ -213,7 +213,7 @@ void page_cache_ra_unbounded(struct readahead_control *ractl,
continue;
}
- page = __page_cache_alloc(gfp_mask);
+ page = &__page_cache_alloc(gfp_mask, 0)->page;
if (!page)
break;
if (mapping->a_ops->readpages) {
diff --git a/net/ceph/pagelist.c b/net/ceph/pagelist.c
index 65e34f78b05d..bde78f5eea33 100644
--- a/net/ceph/pagelist.c
+++ b/net/ceph/pagelist.c
@@ -56,7 +56,7 @@ static int ceph_pagelist_addpage(struct ceph_pagelist *pl)
struct page *page;
if (!pl->num_pages_free) {
- page = __page_cache_alloc(GFP_NOFS);
+ page = &__page_cache_alloc(GFP_NOFS, 0)->page;
} else {
page = list_first_entry(&pl->free_list, struct page, lru);
list_del(&page->lru);
@@ -107,7 +107,7 @@ int ceph_pagelist_reserve(struct ceph_pagelist *pl, size_t space)
space = (space + PAGE_SIZE - 1) >> PAGE_SHIFT; /* conv to num pages */
while (space > pl->num_pages_free) {
- struct page *page = __page_cache_alloc(GFP_NOFS);
+ struct page *page = &__page_cache_alloc(GFP_NOFS, 0)->page;
if (!page)
return -ENOMEM;
list_add_tail(&page->lru, &pl->free_list);
diff --git a/net/ceph/pagevec.c b/net/ceph/pagevec.c
index 64305e7056a1..8e5f70b8fa10 100644
--- a/net/ceph/pagevec.c
+++ b/net/ceph/pagevec.c
@@ -45,7 +45,7 @@ struct page **ceph_alloc_page_vector(int num_pages, gfp_t flags)
if (!pages)
return ERR_PTR(-ENOMEM);
for (i = 0; i < num_pages; i++) {
- pages[i] = __page_cache_alloc(flags);
+ pages[i] = &__page_cache_alloc(flags, 0)->page;
if (pages[i] == NULL) {
ceph_release_page_vector(pages, i);
return ERR_PTR(-ENOMEM);
--
2.29.2
Powered by blists - more mailing lists