From: Mikulas Patocka <mpatocka@redhat.com>
Date: Mon, 30 May 2022 11:36:45 +0000 (+0200)
Subject: fs/ntfs3: provide block_invalidate_folio to fix memory leak
X-Git-Tag: v5.19-rc1~28^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=724bbe49c5e427cb077357d72d240a649f2e4054;p=thirdparty%2Flinux.git

fs/ntfs3: provide block_invalidate_folio to fix memory leak

The ntfs3 filesystem lacks the 'invalidate_folio' method and it causes
memory leak. If you write to the filesystem and then unmount it, the
cached written data are not freed and they are permanently leaked.
Fixes: 7ba13abbd31e ("fs: Turn block_invalidatepage into block_invalidate_folio")

Reported-by: José Luis Lara Carrascal <manualinux@yahoo.es>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Acked-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Cc: stable@vger.kernel.org  # v5.18
---

diff --git a/fs/ntfs3/inode.c b/fs/ntfs3/inode.c
index 76519c72a970f..38045264a61bd 100644
--- a/fs/ntfs3/inode.c
+++ b/fs/ntfs3/inode.c
@@ -1955,6 +1955,7 @@ const struct address_space_operations ntfs_aops = {
 	.direct_IO	= ntfs_direct_IO,
 	.bmap		= ntfs_bmap,
 	.dirty_folio	= block_dirty_folio,
+	.invalidate_folio = block_invalidate_folio,
 };
 
 const struct address_space_operations ntfs_aops_cmpr = {