Invalidate inode if we don't have at least Level II oplock.
Signed-off-by: Pavel Shilovsky <piastryyy@xxxxxxxxx>
---
fs/cifs/file.c | 14 ++++++++++++--
1 files changed, 12 insertions(+), 2 deletions(-)
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 938f26a..dd1e59a 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -1829,8 +1829,16 @@ static ssize_t cifs_read(struct file *file, char *read_data, size_t read_size,
int cifs_file_strict_mmap(struct file *file, struct vm_area_struct *vma)
{
- int rc = 0;
- /* BB */
+ int rc, xid;
+ struct inode *inode = file->f_path.dentry->d_inode;
+
+ xid = GetXid();
+
+ if (!CIFS_I(inode)->clientCanCacheRead)
+ cifs_invalidate_mapping(inode);
+
+ rc = generic_file_mmap(file, vma);
+ FreeXid(xid);
return rc;
}
@@ -1839,12 +1847,14 @@ int cifs_file_mmap(struct file *file, struct vm_area_struct *vma)
int rc, xid;
xid = GetXid();
+
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
--
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