From: David Howells dhowells@redhat.com
[ Upstream commit bb413489288e4e457353bac513fddb6330d245ca ]
The mtime on an inode needs to be updated when a write is made into an mmap'ed section. There are three ways in which this could be done: update it when page_mkwrite is called, update it when a page is changed from dirty to writeback or leave it to the server and fix the mtime up from the reply to the StoreData RPC.
Found with the generic/215 xfstest.
Fixes: 1cf7a1518aef ("afs: Implement shared-writeable mmap") Signed-off-by: David Howells dhowells@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/afs/write.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/fs/afs/write.c b/fs/afs/write.c index cb76566763dba..371db86c6c5ec 100644 --- a/fs/afs/write.c +++ b/fs/afs/write.c @@ -811,6 +811,7 @@ vm_fault_t afs_page_mkwrite(struct vm_fault *vmf) vmf->page->index, priv); SetPagePrivate(vmf->page); set_page_private(vmf->page, priv); + file_update_time(file);
sb_end_pagefault(inode->i_sb); return VM_FAULT_LOCKED;