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CIFS: Implement cifs_strict_fsync

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Invalidate inode mapping if we don't have at least Level II oplock in
cifs_strict_fsync. Also remove filemap_write_and_wait call from cifs_fsync
because it is previously called from vfs_fsync_range. Add file operations'
structures for strict cache mode.

Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Pavel Shilovsky
2010-12-12 13:11:13 +03:00
committed by Steve French
父節點 4f8ba8a0c0
當前提交 8be7e6ba14
共有 4 個文件被更改，包括 78 次插入 和 12 次删除
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36
fs/cifs/file.c
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@@ -1528,27 +1528,47 @@ static int cifs_write_end(struct file *file, struct address_space *mapping,
return rc;
}
int cifs_fsync(struct file *file, int datasync)
int cifs_strict_fsync(struct file *file, int datasync)
{
int xid;
int rc = 0;
struct cifsTconInfo *tcon;
struct cifsFileInfo *smbfile = file->private_data;
struct inode *inode = file->f_path.dentry->d_inode;
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
xid = GetXid();
cFYI(1, "Sync file - name: %s datasync: 0x%x",
file->f_path.dentry->d_name.name, datasync);
rc = filemap_write_and_wait(inode->i_mapping);
if (rc == 0) {
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
if (!CIFS_I(inode)->clientCanCacheRead)
cifs_invalidate_mapping(inode);
tcon = tlink_tcon(smbfile->tlink);
if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOSSYNC))
rc = CIFSSMBFlush(xid, tcon, smbfile->netfid);
}
tcon = tlink_tcon(smbfile->tlink);
if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOSSYNC))
rc = CIFSSMBFlush(xid, tcon, smbfile->netfid);
FreeXid(xid);
return rc;
}
int cifs_fsync(struct file *file, int datasync)
{
int xid;
int rc = 0;
struct cifsTconInfo *tcon;
struct cifsFileInfo *smbfile = file->private_data;
struct cifs_sb_info *cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
xid = GetXid();
cFYI(1, "Sync file - name: %s datasync: 0x%x",
file->f_path.dentry->d_name.name, datasync);
tcon = tlink_tcon(smbfile->tlink);
if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOSSYNC))
rc = CIFSSMBFlush(xid, tcon, smbfile->netfid);
FreeXid(xid);
return rc;