diff options
| author | David Howells <dhowells@redhat.com> | 2023-11-28 17:26:44 +0100 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2024-05-01 19:08:20 +0200 |
| commit | 3758c485f6c9124d8ad76b88382004cbc28a0892 (patch) | |
| tree | 9174fedbeb520d4ec5c8fd719014f8818b63ef8f /fs/smb | |
| parent | cifs: Move cifs_loose_read_iter() and cifs_file_write_iter() to file.c (diff) | |
| download | linux-3758c485f6c9124d8ad76b88382004cbc28a0892.tar.xz linux-3758c485f6c9124d8ad76b88382004cbc28a0892.zip | |
cifs: Set zero_point in the copy_file_range() and remap_file_range()
Set zero_point in the copy_file_range() and remap_file_range()
implementations so that we don't skip reading data modified on a
server-side copy.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Steve French <sfrench@samba.org>
cc: Shyam Prasad N <nspmangalore@gmail.com>
cc: Rohith Surabattula <rohiths.msft@gmail.com>
cc: Jeff Layton <jlayton@kernel.org>
cc: linux-cifs@vger.kernel.org
cc: netfs@lists.linux.dev
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
Diffstat (limited to 'fs/smb')
| -rw-r--r-- | fs/smb/client/cifsfs.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/smb/client/cifsfs.c b/fs/smb/client/cifsfs.c index 847df5152835..9d656a08f617 100644 --- a/fs/smb/client/cifsfs.c +++ b/fs/smb/client/cifsfs.c @@ -1287,6 +1287,8 @@ static loff_t cifs_remap_file_range(struct file *src_file, loff_t off, rc = cifs_flush_folio(target_inode, destend, &fstart, &fend, false); if (rc) goto unlock; + if (fend > target_cifsi->netfs.zero_point) + target_cifsi->netfs.zero_point = fend + 1; /* Discard all the folios that overlap the destination region. */ cifs_dbg(FYI, "about to discard pages %llx-%llx\n", fstart, fend); @@ -1305,6 +1307,8 @@ static loff_t cifs_remap_file_range(struct file *src_file, loff_t off, fscache_resize_cookie(cifs_inode_cookie(target_inode), new_size); } + if (rc == 0 && new_size > target_cifsi->netfs.zero_point) + target_cifsi->netfs.zero_point = new_size; } /* force revalidate of size and timestamps of target file now @@ -1396,6 +1400,8 @@ ssize_t cifs_file_copychunk_range(unsigned int xid, rc = cifs_flush_folio(target_inode, destend, &fstart, &fend, false); if (rc) goto unlock; + if (fend > target_cifsi->netfs.zero_point) + target_cifsi->netfs.zero_point = fend + 1; /* Discard all the folios that overlap the destination region. */ truncate_inode_pages_range(&target_inode->i_data, fstart, fend); |