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| author | Pavel Shilovsky <piastryyy@gmail.com> | 2010-12-14 11:29:51 +0300 |
|---|---|---|
| committer | Steve French <sfrench@us.ibm.com> | 2011-01-20 21:42:25 +0000 |
| commit | 7a6a19b17ab9103ec708c18befd28f2a3908d4c1 (patch) | |
| tree | 3b781bf11b2a25c93ce20dbd80876e7e01c730e6 /fs/cifs/file.c | |
| parent | 8be7e6ba142423e6ad98fed293c96f196f685229 (diff) | |
| download | kernel_samsung_crespo-7a6a19b17ab9103ec708c18befd28f2a3908d4c1.zip kernel_samsung_crespo-7a6a19b17ab9103ec708c18befd28f2a3908d4c1.tar.gz kernel_samsung_crespo-7a6a19b17ab9103ec708c18befd28f2a3908d4c1.tar.bz2 | |
CIFS: Implement cifs_file_strict_mmap (try #2)
Invalidate inode mapping if we don't have at least Level II oplock.
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs/cifs/file.c')
| -rw-r--r-- | fs/cifs/file.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 5790fab..0b32377 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -1769,6 +1769,21 @@ static ssize_t cifs_read(struct file *file, char *read_data, size_t read_size, return total_read; } +int cifs_file_strict_mmap(struct file *file, struct vm_area_struct *vma) +{ + 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; +} + int cifs_file_mmap(struct file *file, struct vm_area_struct *vma) { int rc, xid; |