diff options
| 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 | |
| parent | 8be7e6ba142423e6ad98fed293c96f196f685229 (diff) | |
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>
| -rw-r--r-- | fs/cifs/cifsfs.c | 4 | ||||
| -rw-r--r-- | fs/cifs/cifsfs.h | 1 | ||||
| -rw-r--r-- | fs/cifs/file.c | 15 |
3 files changed, 18 insertions, 2 deletions
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index f6093e401c5..e24d966fb21 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -743,7 +743,7 @@ const struct file_operations cifs_file_strict_ops = { .lock = cifs_lock, .fsync = cifs_strict_fsync, .flush = cifs_flush, - .mmap = cifs_file_mmap, + .mmap = cifs_file_strict_mmap, .splice_read = generic_file_splice_read, .llseek = cifs_llseek, #ifdef CONFIG_CIFS_POSIX @@ -798,7 +798,7 @@ const struct file_operations cifs_file_strict_nobrl_ops = { .release = cifs_close, .fsync = cifs_strict_fsync, .flush = cifs_flush, - .mmap = cifs_file_mmap, + .mmap = cifs_file_strict_mmap, .splice_read = generic_file_splice_read, .llseek = cifs_llseek, #ifdef CONFIG_CIFS_POSIX diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h index 10c4303c282..710072e3691 100644 --- a/fs/cifs/cifsfs.h +++ b/fs/cifs/cifsfs.h @@ -89,6 +89,7 @@ extern int cifs_fsync(struct file *, int); extern int cifs_strict_fsync(struct file *, int); extern int cifs_flush(struct file *, fl_owner_t id); extern int cifs_file_mmap(struct file * , struct vm_area_struct *); +extern int cifs_file_strict_mmap(struct file * , struct vm_area_struct *); extern const struct file_operations cifs_dir_ops; extern int cifs_dir_open(struct inode *inode, struct file *file); extern int cifs_readdir(struct file *file, void *direntry, filldir_t filldir); diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 5790fab7349..0b32377ef8b 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; |