Merge tag 'mm-hotfixes-stable-2023-07-08-10-43' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull hotfixes from Andrew Morton:
 "16 hotfixes. Six are cc:stable and the remainder address post-6.4
  issues"

The merge undoes the disabling of the CONFIG_PER_VMA_LOCK feature, since
it was all hopefully fixed in mainline.

* tag 'mm-hotfixes-stable-2023-07-08-10-43' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  lib: dhry: fix sleeping allocations inside non-preemptable section
  kasan, slub: fix HW_TAGS zeroing with slub_debug
  kasan: fix type cast in memory_is_poisoned_n
  mailmap: add entries for Heiko Stuebner
  mailmap: update manpage link
  bootmem: remove the vmemmap pages from kmemleak in free_bootmem_page
  MAINTAINERS: add linux-next info
  mailmap: add Markus Schneider-Pargmann
  writeback: account the number of pages written back
  mm: call arch_swap_restore() from do_swap_page()
  squashfs: fix cache race with migration
  mm/hugetlb.c: fix a bug within a BUG(): inconsistent pte comparison
  docs: update ocfs2-devel mailing list address
  MAINTAINERS: update ocfs2-devel mailing list address
  mm: disable CONFIG_PER_VMA_LOCK until its fixed
  fork: lock VMAs of the parent process when forking

2 files changed, 26 insertions, 7 deletions

diff --git a/fs/ocfs2/Kconfig b/fs/ocfs2/Kconfig
index 304d12186ccd..3123da7cfb30 100644
--- a/fs/ocfs2/Kconfig
+++ b/fs/ocfs2/Kconfig
@@ -17,9 +17,9 @@ config OCFS2_FS
 	  You'll want to install the ocfs2-tools package in order to at least
 	  get "mount.ocfs2".
 
-	  Project web page:    https://oss.oracle.com/projects/ocfs2
-	  Tools web page:      https://oss.oracle.com/projects/ocfs2-tools
-	  OCFS2 mailing lists: https://oss.oracle.com/projects/ocfs2/mailman/
+	  Project web page:    https://ocfs2.wiki.kernel.org/
+	  Tools web page:      https://github.com/markfasheh/ocfs2-tools
+	  OCFS2 mailing lists: https://subspace.kernel.org/lists.linux.dev.html
 
 	  For more information on OCFS2, see the file
 	  <file:Documentation/filesystems/ocfs2.rst>.
diff --git a/fs/squashfs/block.c b/fs/squashfs/block.c
index 6aa9c2e1e8eb..581ce9519339 100644
--- a/fs/squashfs/block.c
+++ b/fs/squashfs/block.c
@@ -166,6 +166,26 @@ static int squashfs_bio_read_cached(struct bio *fullbio,
 	return 0;
 }
 
+static struct page *squashfs_get_cache_page(struct address_space *mapping,
+					    pgoff_t index)
+{
+	struct page *page;
+
+	if (!mapping)
+		return NULL;
+
+	page = find_get_page(mapping, index);
+	if (!page)
+		return NULL;
+
+	if (!PageUptodate(page)) {
+		put_page(page);
+		return NULL;
+	}
+
+	return page;
+}
+
 static int squashfs_bio_read(struct super_block *sb, u64 index, int length,
 			     struct bio **biop, int *block_offset)
 {
@@ -190,11 +210,10 @@ static int squashfs_bio_read(struct super_block *sb, u64 index, int length,
 	for (i = 0; i < page_count; ++i) {
 		unsigned int len =
 			min_t(unsigned int, PAGE_SIZE - offset, total_len);
-		struct page *page = NULL;
+		pgoff_t index = (read_start >> PAGE_SHIFT) + i;
+		struct page *page;
 
-		if (cache_mapping)
-			page = find_get_page(cache_mapping,
-					     (read_start >> PAGE_SHIFT) + i);
+		page = squashfs_get_cache_page(cache_mapping, index);
 		if (!page)
 			page = alloc_page(GFP_NOIO);