6.10-stable review patch. If anyone has any objections, please let me know.
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From: David Howells dhowells@redhat.com
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@redhat.com Link: https://lore.kernel.org/r/20240828210249.1078637-5-dhowells@redhat.com cc: Matthew Wilcox willy@infradead.org cc: Miklos Szeredi miklos@szeredi.hu cc: Trond Myklebust trond.myklebust@hammerspace.com cc: Christoph Hellwig hch@lst.de cc: Andrew Morton akpm@linux-foundation.org cc: Alexander Viro viro@zeniv.linux.org.uk cc: Christian Brauner brauner@kernel.org cc: Jeff Layton jlayton@kernel.org cc: linux-mm@kvack.org cc: linux-fsdevel@vger.kernel.org cc: netfs@lists.linux.dev cc: v9fs@lists.linux.dev cc: linux-afs@lists.infradead.org cc: ceph-devel@vger.kernel.org cc: linux-cifs@vger.kernel.org cc: linux-nfs@vger.kernel.org cc: devel@lists.orangefs.org Signed-off-by: Christian Brauner brauner@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- 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);