From 4f8ba8a0c095933dd54a2c281750c8a85b329b26 Mon Sep 17 00:00:00 2001 From: Pavel Shilovsky Date: Sun, 21 Nov 2010 22:36:12 +0300 Subject: CIFS: Make cifsFileInfo_put work with strict cache mode On strict cache mode when we close the last file handle of the inode we should set invalid_mapping flag on this inode to prevent data coherency problem when we open it again but it has been modified on the server. Reviewed-by: Jeff Layton Signed-off-by: Pavel Shilovsky Signed-off-by: Steve French --- fs/cifs/file.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'fs/cifs/file.c') diff --git a/fs/cifs/file.c b/fs/cifs/file.c index bd2a028af833..1b26c2717599 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -287,6 +287,7 @@ void cifsFileInfo_put(struct cifsFileInfo *cifs_file) struct inode *inode = cifs_file->dentry->d_inode; struct cifsTconInfo *tcon = tlink_tcon(cifs_file->tlink); struct cifsInodeInfo *cifsi = CIFS_I(inode); + struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); struct cifsLockInfo *li, *tmp; spin_lock(&cifs_file_list_lock); @@ -302,6 +303,13 @@ void cifsFileInfo_put(struct cifsFileInfo *cifs_file) if (list_empty(&cifsi->openFileList)) { cFYI(1, "closing last open instance for inode %p", cifs_file->dentry->d_inode); + + /* in strict cache mode we need invalidate mapping on the last + close because it may cause a error when we open this file + again and get at least level II oplock */ + if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_STRICT_IO) + CIFS_I(inode)->invalid_mapping = true; + cifs_set_oplock_level(cifsi, 0); } spin_unlock(&cifs_file_list_lock); -- cgit v1.2.3-59-g8ed1b