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From:   "Matthew Wilcox (Oracle)" <willy@infradead.org>
To:     linux-fsdevel@vger.kernel.org
Cc:     "Matthew Wilcox (Oracle)" <willy@infradead.org>,
        linux-kernel@vger.kernel.org, linux-block@vger.kernel.org,
        linux-aio@kvack.org, linux-btrfs@vger.kernel.org,
        linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net,
        cluster-devel@redhat.com, linux-mm@kvack.org,
        linux-xfs@vger.kernel.org, linux-nfs@vger.kernel.org,
        linux-ntfs-dev@lists.sourceforge.net, ocfs2-devel@oss.oracle.com,
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Subject: [PATCH v2 01/19] secretmem: Remove isolate_page
Date:   Wed,  8 Jun 2022 16:02:31 +0100
Message-Id: <20220608150249.3033815-2-willy@infradead.org>
In-Reply-To: <20220608150249.3033815-1-willy@infradead.org>
References: <20220608150249.3033815-1-willy@infradead.org>
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The isolate_page operation is never called for filesystems, only
for device drivers which call SetPageMovable.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
 mm/secretmem.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/mm/secretmem.c b/mm/secretmem.c
index 206ed6b40c1d..1c7f1775b56e 100644
--- a/mm/secretmem.c
+++ b/mm/secretmem.c
@@ -133,11 +133,6 @@ static const struct file_operations secretmem_fops = {
 	.mmap		= secretmem_mmap,
 };
 
-static bool secretmem_isolate_page(struct page *page, isolate_mode_t mode)
-{
-	return false;
-}
-
 static int secretmem_migratepage(struct address_space *mapping,
 				 struct page *newpage, struct page *page,
 				 enum migrate_mode mode)
@@ -155,7 +150,6 @@ const struct address_space_operations secretmem_aops = {
 	.dirty_folio	= noop_dirty_folio,
 	.free_folio	= secretmem_free_folio,
 	.migratepage	= secretmem_migratepage,
-	.isolate_page	= secretmem_isolate_page,
 };
 
 static int secretmem_setattr(struct user_namespace *mnt_userns,
-- 
2.35.1