diff options
| -rw-r--r-- | fs/cifs/cifsfs.c | 3 | ||||
| -rw-r--r-- | fs/cifs/cifsglob.h | 7 | ||||
| -rw-r--r-- | fs/cifs/file.c | 30 |
3 files changed, 23 insertions, 17 deletions
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index 5c29721..b0a2e16 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -945,7 +945,8 @@ cifs_init_once(void *inode) struct cifsInodeInfo *cifsi = inode; inode_init_once(&cifsi->vfs_inode); - INIT_LIST_HEAD(&cifsi->lockList); + INIT_LIST_HEAD(&cifsi->llist); + mutex_init(&cifsi->lock_mutex); } static int diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index 1f265ff..55ebf39 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -494,6 +494,7 @@ struct cifsLockInfo { __u64 length; __u32 pid; __u8 type; + __u16 netfid; }; /* @@ -526,8 +527,6 @@ struct cifsFileInfo { struct dentry *dentry; unsigned int f_flags; struct tcon_link *tlink; - struct mutex lock_mutex; - struct list_head llist; /* list of byte range locks we have. */ bool invalidHandle:1; /* file closed via session abend */ bool oplock_break_cancelled:1; int count; /* refcount protected by cifs_file_list_lock */ @@ -560,7 +559,9 @@ void cifsFileInfo_put(struct cifsFileInfo *cifs_file); */ struct cifsInodeInfo { - struct list_head lockList; + struct list_head llist; /* brlocks for this inode */ + bool can_cache_brlcks; + struct mutex lock_mutex; /* protect two fields above */ /* BB add in lists for dirty pages i.e. write caching info for oplock */ struct list_head openFileList; __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */ diff --git a/fs/cifs/file.c b/fs/cifs/file.c index ab85699..7f84ece 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -262,8 +262,6 @@ cifs_new_fileinfo(__u16 fileHandle, struct file *file, pCifsFile->invalidHandle = false; pCifsFile->tlink = cifs_get_tlink(tlink); mutex_init(&pCifsFile->fh_mutex); - mutex_init(&pCifsFile->lock_mutex); - INIT_LIST_HEAD(&pCifsFile->llist); INIT_WORK(&pCifsFile->oplock_break, cifs_oplock_break); spin_lock(&cifs_file_list_lock); @@ -331,12 +329,14 @@ void cifsFileInfo_put(struct cifsFileInfo *cifs_file) /* Delete any outstanding lock records. We'll lose them when the file * is closed anyway. */ - mutex_lock(&cifs_file->lock_mutex); - list_for_each_entry_safe(li, tmp, &cifs_file->llist, llist) { + mutex_lock(&cifsi->lock_mutex); + list_for_each_entry_safe(li, tmp, &cifsi->llist, llist) { + if (li->netfid != cifs_file->netfid) + continue; list_del(&li->llist); kfree(li); } - mutex_unlock(&cifs_file->lock_mutex); + mutex_unlock(&cifsi->lock_mutex); cifs_put_tlink(cifs_file->tlink); dput(cifs_file->dentry); @@ -639,20 +639,21 @@ int cifs_closedir(struct inode *inode, struct file *file) return rc; } -static int store_file_lock(struct cifsFileInfo *cfile, __u64 len, +static int store_file_lock(struct cifsInodeInfo *cinode, __u64 len, __u64 offset, __u8 type, __u16 netfid) { struct cifsLockInfo *li = kmalloc(sizeof(struct cifsLockInfo), GFP_KERNEL); if (li == NULL) return -ENOMEM; + li->netfid = netfid; li->offset = offset; li->length = len; li->type = type; li->pid = current->tgid; - mutex_lock(&cfile->lock_mutex); - list_add_tail(&li->llist, &cfile->llist); - mutex_unlock(&cfile->lock_mutex); + mutex_lock(&cinode->lock_mutex); + list_add_tail(&li->llist, &cinode->llist); + mutex_unlock(&cinode->lock_mutex); return 0; } @@ -769,6 +770,7 @@ cifs_setlk(struct file *file, struct file_lock *flock, __u8 type, __u64 length = 1 + flock->fl_end - flock->fl_start; struct cifsFileInfo *cfile = (struct cifsFileInfo *)file->private_data; struct cifs_tcon *tcon = tlink_tcon(cfile->tlink); + struct cifsInodeInfo *cinode = CIFS_I(file->f_path.dentry->d_inode); __u16 netfid = cfile->netfid; if (posix_lck) { @@ -791,7 +793,7 @@ cifs_setlk(struct file *file, struct file_lock *flock, __u8 type, flock->fl_start, 0, lock, type, wait_flag, 0); if (rc == 0) { /* For Windows locks we must store them. */ - rc = store_file_lock(cfile, length, flock->fl_start, + rc = store_file_lock(cinode, length, flock->fl_start, type, netfid); } } else if (unlock) { @@ -802,14 +804,16 @@ cifs_setlk(struct file *file, struct file_lock *flock, __u8 type, int stored_rc = 0; struct cifsLockInfo *li, *tmp; - mutex_lock(&cfile->lock_mutex); - list_for_each_entry_safe(li, tmp, &cfile->llist, llist) { + mutex_lock(&cinode->lock_mutex); + list_for_each_entry_safe(li, tmp, &cinode->llist, llist) { if (flock->fl_start > li->offset || (flock->fl_start + length) < (li->offset + li->length)) continue; if (current->tgid != li->pid) continue; + if (cfile->netfid != li->netfid) + continue; stored_rc = CIFSSMBLock(xid, tcon, netfid, current->tgid, li->length, @@ -822,7 +826,7 @@ cifs_setlk(struct file *file, struct file_lock *flock, __u8 type, kfree(li); } } - mutex_unlock(&cfile->lock_mutex); + mutex_unlock(&cinode->lock_mutex); } out: if (flock->fl_flags & FL_POSIX) |
