Invalidate inode if we don't have at least Level II oplock and strict cache mode switched on.
Signed-off-by: Pavel Shilovsky <[email protected]> --- fs/cifs/file.c | 20 +++++++++++++++----- 1 files changed, 15 insertions(+), 5 deletions(-) diff --git a/fs/cifs/file.c b/fs/cifs/file.c index d216879..e9f2fae 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -1812,14 +1812,24 @@ static ssize_t cifs_read(struct file *file, char *read_data, size_t read_size, int cifs_file_mmap(struct file *file, struct vm_area_struct *vma) { int rc, xid; + struct inode *inode = file->f_path.dentry->d_inode; + struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); xid = GetXid(); - rc = cifs_revalidate_file(file); - if (rc) { - cFYI(1, "Validation prior to mmap failed, error=%d", rc); - FreeXid(xid); - return rc; + + if (!CIFS_I(inode)->clientCanCacheRead && + (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_STRICT_IO)) + cifs_invalidate_mapping(inode); + else { + rc = cifs_revalidate_file(file); + if (rc) { + cFYI(1, "Validation prior to mmap failed, error=%d", + rc); + FreeXid(xid); + return rc; + } } + rc = generic_file_mmap(file, vma); FreeXid(xid); return rc; -- 1.7.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-cifs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
