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netfs: Fix netfs_page_mkwrite() to flush conflicting data, not wait

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BugLink: https://bugs.launchpad.net/bugs/2076435

[ Upstream commit 9d66154f73b7c7007c3be1113dfb50b99b791f8f ]

Fix netfs_page_mkwrite() to use filemap_fdatawrite_range(), not
filemap_fdatawait_range() to flush conflicting data.

Fixes: 102a7e2c59 ("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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Portia Stephens <portia.stephens@canonical.com>
Signed-off-by: Roxana Nicolescu <roxana.nicolescu@canonical.com>
This commit is contained in:
David Howells
2024-06-24 12:24:03 +01:00
committed by Stefan Bader
parent 73b1741a5a
commit bcdc871f06
1 changed files with 3 additions and 3 deletions
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fs/netfs/buffered_write.c
+3 -3
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@@ -535,9 +535,9 @@ vm_fault_t netfs_page_mkwrite(struct vm_fault *vmf, struct netfs_group *netfs_gr
if (netfs_folio_group(folio) != netfs_group) {
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;