From 9d66154f73b7c7007c3be1113dfb50b99b791f8f Mon Sep 17 00:00:00 2001
From: David Howells <dhowells@redhat.com>
Date: Mon, 24 Jun 2024 12:24:03 +0100
Subject: [PATCH] netfs: Fix netfs_page_mkwrite() to flush conflicting data,
not wait
Fix netfs_page_mkwrite() to use filemap_fdatawrite_range(), not
filemap_fdatawait_range() to flush conflicting data.
Fixes: 102a7e2c598c ("netfs: Allow buffered shared-writeable mmap through netfs_page_mkwrite()")
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://lore.kernel.org/r/614300.1719228243@warthog.procyon.org.uk
cc: Matthew Wilcox <willy@infradead.org>
cc: Jeff Layton <jlayton@kernel.org>
cc: netfs@lists.linux.dev
cc: v9fs@lists.linux.dev
cc: linux-afs@lists.infradead.org
cc: linux-cifs@vger.kernel.org
cc: linux-mm@kvack.org
cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
---
fs/netfs/buffered_write.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/fs/netfs/buffered_write.c b/fs/netfs/buffered_write.c
index 270f8ebf83280..d583af7a2209e 100644
--- a/fs/netfs/buffered_write.c
+++ b/fs/netfs/buffered_write.c
@@ -555,9 +555,9 @@ vm_fault_t netfs_page_mkwrite(struct vm_fault *vmf, struct netfs_group *netfs_gr
group = netfs_folio_group(folio);
if (group != netfs_group && group != NETFS_FOLIO_COPY_TO_CACHE) {
folio_unlock(folio);
- err = filemap_fdatawait_range(mapping,
- folio_pos(folio),
- folio_pos(folio) + folio_size(folio));
+ err = filemap_fdatawrite_range(mapping,
+ folio_pos(folio),
+ folio_pos(folio) + folio_size(folio));
switch (err) {
case 0:
ret = VM_FAULT_RETRY;
--
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