6.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: David Howells <dhowells@xxxxxxxxxx>
commit c26096ee0278c5e765009c5eee427bbafe6dc090 upstream.
Fix filemap_invalidate_inode() to use invalidate_inode_pages2_range()
rather than truncate_inode_pages_range(). The latter clears the
invalidated bit of a partial pages rather than discarding it entirely.
This causes copy_file_range() to fail on cifs because the partial pages at
either end of the destination range aren't evicted and reread, but rather
just partly cleared.
This causes generic/075 and generic/112 xfstests to fail.
Fixes: 74e797d79cf1 ("mm: Provide a means of invalidation without using launder_folio")
Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240828210249.1078637-5-dhowells@xxxxxxxxxx
cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
cc: Miklos Szeredi <miklos@xxxxxxxxxx>
cc: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
cc: Christoph Hellwig <hch@xxxxxx>
cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
cc: Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>
cc: Christian Brauner <brauner@xxxxxxxxxx>
cc: Jeff Layton <jlayton@xxxxxxxxxx>
cc: linux-mm@xxxxxxxxx
cc: linux-fsdevel@xxxxxxxxxxxxxxx
cc: netfs@xxxxxxxxxxxxxxx
cc: v9fs@xxxxxxxxxxxxxxx
cc: linux-afs@xxxxxxxxxxxxxxxxxxx
cc: ceph-devel@xxxxxxxxxxxxxxx
cc: linux-cifs@xxxxxxxxxxxxxxx
cc: linux-nfs@xxxxxxxxxxxxxxx
cc: devel@xxxxxxxxxxxxxxxxxx
Signed-off-by: Christian Brauner <brauner@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
mm/filemap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -4221,7 +4221,7 @@ int filemap_invalidate_inode(struct inod
}
/* Wait for writeback to complete on all folios and discard. */
- truncate_inode_pages_range(mapping, start, end);
+ invalidate_inode_pages2_range(mapping, start / PAGE_SIZE, end / PAGE_SIZE);
unlock:
filemap_invalidate_unlock(mapping);
