Commit 08de5907 authored Jun 12, 2020 by David Howells Committed by Greg Kroah-Hartman Jun 25, 2020

afs: Fix non-setting of mtime when writing into mmap



[ 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: 1cf7a151 ("afs: Implement shared-writeable mmap")
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

parent 2ee8f6e7

fs/afs/write.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -792,6 +792,7 @@ 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;