fs/afs/file.c

93 int afs_cache_wb_key(struct afs_vnode *vnode, struct afs_file *af)
103 	spin_lock(&vnode->wb_lock);
104 	list_for_each_entry(p, &vnode->wb_keys, vnode_link) {
110 	list_add_tail(&wbk->vnode_link, &vnode->wb_keys);
111 	spin_unlock(&vnode->wb_lock);
117 	spin_unlock(&vnode->wb_lock);
128 	struct afs_vnode *vnode = AFS_FS_I(inode);
133 	_enter("{%llx:%llu},", vnode->fid.vid, vnode->fid.vnode);
135 	key = afs_request_key(vnode->volume->cell);
148 	ret = afs_validate(vnode, key);
153 		ret = afs_cache_wb_key(vnode, af);
159 		set_bit(AFS_VNODE_NEW_CONTENT, &vnode->flags);
161 	fscache_use_cookie(afs_vnode_cache(vnode), file->f_mode & FMODE_WRITE);
182 	struct afs_vnode *vnode = AFS_FS_I(inode);
187 	_enter("{%llx:%llu},", vnode->fid.vid, vnode->fid.vnode);
197 		i_size = i_size_read(&vnode->netfs.inode);
198 		afs_set_cache_aux(vnode, &aux);
199 		fscache_unuse_cookie(afs_vnode_cache(vnode), &aux, &i_size);
201 		fscache_unuse_cookie(afs_vnode_cache(vnode), NULL, NULL);
206 	afs_prune_wb_keys(vnode);
256 	struct afs_vnode *vnode = op->file[0].vnode;
260 	afs_stat_v(vnode, n_fetches);
283 int afs_fetch_data(struct afs_vnode *vnode, struct afs_read *req)
288 	       vnode->volume->name,
289 	       vnode->fid.vid,
290 	       vnode->fid.vnode,
291 	       vnode->fid.unique,
294 	op = afs_alloc_operation(req->key, vnode->volume);
301 	afs_op_set_vnode(op, 0, vnode);
310 	struct afs_vnode *vnode = AFS_FS_I(subreq->rreq->inode);
321 	fsreq->vnode	= vnode;
324 	afs_fetch_data(fsreq->vnode, fsreq);
330 	struct afs_vnode *vnode = AFS_FS_I(folio->mapping->host);
340 	fsreq->vnode	= vnode;
345 	ret = afs_fetch_data(fsreq->vnode, fsreq);
364 	struct afs_vnode *vnode = AFS_FS_I(file_inode(file));
366 	return test_bit(AFS_VNODE_DELETED, &vnode->flags) ? -ESTALE : 0;
376 	struct afs_vnode *vnode = AFS_FS_I(inode);
379 	write_seqlock(&vnode->cb_lock);
380 	i_size = i_size_read(&vnode->netfs.inode);
382 		i_size_write(&vnode->netfs.inode, new_i_size);
383 		inode_set_bytes(&vnode->netfs.inode, new_i_size);
385 	write_sequnlock(&vnode->cb_lock);
386 	fscache_update_cookie(afs_vnode_cache(vnode), NULL, &new_i_size);
391 	struct afs_vnode *vnode = AFS_FS_I(wreq->inode);
393 	afs_invalidate_cache(vnode, 0);
406 static void afs_add_open_mmap(struct afs_vnode *vnode)
408 	if (atomic_inc_return(&vnode->cb_nr_mmap) == 1) {
409 		down_write(&vnode->volume->open_mmaps_lock);
411 		if (list_empty(&vnode->cb_mmap_link))
412 			list_add_tail(&vnode->cb_mmap_link, &vnode->volume->open_mmaps);
414 		up_write(&vnode->volume->open_mmaps_lock);
418 static void afs_drop_open_mmap(struct afs_vnode *vnode)
420 	if (atomic_add_unless(&vnode->cb_nr_mmap, -1, 1))
423 	down_write(&vnode->volume->open_mmaps_lock);
425 	read_seqlock_excl(&vnode->cb_lock);
428 	if (atomic_dec_and_test(&vnode->cb_nr_mmap))
429 		list_del_init(&vnode->cb_mmap_link);
430 	read_sequnlock_excl(&vnode->cb_lock);
432 	up_write(&vnode->volume->open_mmaps_lock);
433 	flush_work(&vnode->cb_work);
441 	struct afs_vnode *vnode = AFS_FS_I(file_inode(file));
444 	afs_add_open_mmap(vnode);
450 		afs_drop_open_mmap(vnode);
466 	struct afs_vnode *vnode = AFS_FS_I(file_inode(vmf->vma->vm_file));
468 	if (afs_check_validity(vnode))
476 	struct afs_vnode *vnode = AFS_FS_I(inode);
486 	ret = afs_validate(vnode, af->key);
498 	struct afs_vnode *vnode = AFS_FS_I(inode);
505 	ret = afs_validate(vnode, af->key);