From 466b77bc954c23c5741ea7dd02f20212a72acdb2 Mon Sep 17 00:00:00 2001 From: David Howells Date: Tue, 17 Mar 2015 22:26:21 +0000 Subject: VFS: fs/cachefiles: d_backing_inode() annotations Signed-off-by: David Howells Signed-off-by: Al Viro --- fs/cachefiles/bind.c | 10 +++---- fs/cachefiles/interface.c | 2 +- fs/cachefiles/namei.c | 70 +++++++++++++++++++++++------------------------ fs/cachefiles/rdwr.c | 14 +++++----- fs/cachefiles/security.c | 6 ++-- fs/cachefiles/xattr.c | 22 +++++++-------- 6 files changed, 62 insertions(+), 62 deletions(-) (limited to 'fs/cachefiles') diff --git a/fs/cachefiles/bind.c b/fs/cachefiles/bind.c index fbb08e97438d..6af790fc3df8 100644 --- a/fs/cachefiles/bind.c +++ b/fs/cachefiles/bind.c @@ -123,11 +123,11 @@ static int cachefiles_daemon_add_cache(struct cachefiles_cache *cache) /* check parameters */ ret = -EOPNOTSUPP; - if (!root->d_inode || - !root->d_inode->i_op->lookup || - !root->d_inode->i_op->mkdir || - !root->d_inode->i_op->setxattr || - !root->d_inode->i_op->getxattr || + if (d_is_negative(root) || + !d_backing_inode(root)->i_op->lookup || + !d_backing_inode(root)->i_op->mkdir || + !d_backing_inode(root)->i_op->setxattr || + !d_backing_inode(root)->i_op->getxattr || !root->d_sb->s_op->statfs || !root->d_sb->s_op->sync_fs) goto error_unsupported; diff --git a/fs/cachefiles/interface.c b/fs/cachefiles/interface.c index f1fb0a21bb5a..afa023dded5b 100644 --- a/fs/cachefiles/interface.c +++ b/fs/cachefiles/interface.c @@ -441,7 +441,7 @@ static int cachefiles_attr_changed(struct fscache_object *_object) fscache_set_store_limit(&object->fscache, ni_size); - oi_size = i_size_read(object->backer->d_inode); + oi_size = i_size_read(d_backing_inode(object->backer)); if (oi_size == ni_size) return 0; diff --git a/fs/cachefiles/namei.c b/fs/cachefiles/namei.c index 61396359863f..ab857ab9f40d 100644 --- a/fs/cachefiles/namei.c +++ b/fs/cachefiles/namei.c @@ -355,7 +355,7 @@ try_again: return -EIO; } - if (grave->d_inode) { + if (d_is_positive(grave)) { unlock_rename(cache->graveyard, dir); dput(grave); grave = NULL; @@ -415,7 +415,7 @@ int cachefiles_delete_object(struct cachefiles_cache *cache, _enter(",OBJ%x{%p}", object->fscache.debug_id, object->dentry); ASSERT(object->dentry); - ASSERT(object->dentry->d_inode); + ASSERT(d_backing_inode(object->dentry)); ASSERT(object->dentry->d_parent); dir = dget_parent(object->dentry); @@ -473,7 +473,7 @@ int cachefiles_walk_to_object(struct cachefiles_object *parent, path.mnt = cache->mnt; ASSERT(parent->dentry); - ASSERT(parent->dentry->d_inode); + ASSERT(d_backing_inode(parent->dentry)); if (!(d_is_dir(parent->dentry))) { // TODO: convert file to dir @@ -505,21 +505,21 @@ lookup_again: if (IS_ERR(next)) goto lookup_error; - _debug("next -> %p %s", next, next->d_inode ? "positive" : "negative"); + _debug("next -> %p %s", next, d_backing_inode(next) ? "positive" : "negative"); if (!key) - object->new = !next->d_inode; + object->new = !d_backing_inode(next); /* if this element of the path doesn't exist, then the lookup phase * failed, and we can release any readers in the certain knowledge that * there's nothing for them to actually read */ - if (!next->d_inode) + if (d_is_negative(next)) fscache_object_lookup_negative(&object->fscache); /* we need to create the object if it's negative */ if (key || object->type == FSCACHE_COOKIE_TYPE_INDEX) { /* index objects and intervening tree levels must be subdirs */ - if (!next->d_inode) { + if (d_is_negative(next)) { ret = cachefiles_has_space(cache, 1, 0); if (ret < 0) goto create_error; @@ -534,21 +534,21 @@ lookup_again: if (ret < 0) goto create_error; - ASSERT(next->d_inode); + ASSERT(d_backing_inode(next)); _debug("mkdir -> %p{%p{ino=%lu}}", - next, next->d_inode, next->d_inode->i_ino); + next, d_backing_inode(next), d_backing_inode(next)->i_ino); } else if (!d_can_lookup(next)) { pr_err("inode %lu is not a directory\n", - next->d_inode->i_ino); + d_backing_inode(next)->i_ino); ret = -ENOBUFS; goto error; } } else { /* non-index objects start out life as files */ - if (!next->d_inode) { + if (d_is_negative(next)) { ret = cachefiles_has_space(cache, 1, 0); if (ret < 0) goto create_error; @@ -563,16 +563,16 @@ lookup_again: if (ret < 0) goto create_error; - ASSERT(next->d_inode); + ASSERT(d_backing_inode(next)); _debug("create -> %p{%p{ino=%lu}}", - next, next->d_inode, next->d_inode->i_ino); + next, d_backing_inode(next), d_backing_inode(next)->i_ino); } else if (!d_can_lookup(next) && !d_is_reg(next) ) { pr_err("inode %lu is not a file or directory\n", - next->d_inode->i_ino); + d_backing_inode(next)->i_ino); ret = -ENOBUFS; goto error; } @@ -646,7 +646,7 @@ lookup_again: const struct address_space_operations *aops; ret = -EPERM; - aops = object->dentry->d_inode->i_mapping->a_ops; + aops = d_backing_inode(object->dentry)->i_mapping->a_ops; if (!aops->bmap) goto check_error; @@ -659,7 +659,7 @@ lookup_again: object->new = 0; fscache_obtained_object(&object->fscache); - _leave(" = 0 [%lu]", object->dentry->d_inode->i_ino); + _leave(" = 0 [%lu]", d_backing_inode(object->dentry)->i_ino); return 0; create_error: @@ -731,10 +731,10 @@ struct dentry *cachefiles_get_directory(struct cachefiles_cache *cache, } _debug("subdir -> %p %s", - subdir, subdir->d_inode ? "positive" : "negative"); + subdir, d_backing_inode(subdir) ? "positive" : "negative"); /* we need to create the subdir if it doesn't exist yet */ - if (!subdir->d_inode) { + if (d_is_negative(subdir)) { ret = cachefiles_has_space(cache, 1, 0); if (ret < 0) goto mkdir_error; @@ -750,18 +750,18 @@ struct dentry *cachefiles_get_directory(struct cachefiles_cache *cache, if (ret < 0) goto mkdir_error; - ASSERT(subdir->d_inode); + ASSERT(d_backing_inode(subdir)); _debug("mkdir -> %p{%p{ino=%lu}}", subdir, - subdir->d_inode, - subdir->d_inode->i_ino); + d_backing_inode(subdir), + d_backing_inode(subdir)->i_ino); } mutex_unlock(&d_inode(dir)->i_mutex); /* we need to make sure the subdir is a directory */ - ASSERT(subdir->d_inode); + ASSERT(d_backing_inode(subdir)); if (!d_can_lookup(subdir)) { pr_err("%s is not a directory\n", dirname); @@ -770,18 +770,18 @@ struct dentry *cachefiles_get_directory(struct cachefiles_cache *cache, } ret = -EPERM; - if (!subdir->d_inode->i_op->setxattr || - !subdir->d_inode->i_op->getxattr || - !subdir->d_inode->i_op->lookup || - !subdir->d_inode->i_op->mkdir || - !subdir->d_inode->i_op->create || - (!subdir->d_inode->i_op->rename && - !subdir->d_inode->i_op->rename2) || - !subdir->d_inode->i_op->rmdir || - !subdir->d_inode->i_op->unlink) + if (!d_backing_inode(subdir)->i_op->setxattr || + !d_backing_inode(subdir)->i_op->getxattr || + !d_backing_inode(subdir)->i_op->lookup || + !d_backing_inode(subdir)->i_op->mkdir || + !d_backing_inode(subdir)->i_op->create || + (!d_backing_inode(subdir)->i_op->rename && + !d_backing_inode(subdir)->i_op->rename2) || + !d_backing_inode(subdir)->i_op->rmdir || + !d_backing_inode(subdir)->i_op->unlink) goto check_error; - _leave(" = [%lu]", subdir->d_inode->i_ino); + _leave(" = [%lu]", d_backing_inode(subdir)->i_ino); return subdir; check_error: @@ -836,12 +836,12 @@ static struct dentry *cachefiles_check_active(struct cachefiles_cache *cache, goto lookup_error; //_debug("victim -> %p %s", - // victim, victim->d_inode ? "positive" : "negative"); + // victim, d_backing_inode(victim) ? "positive" : "negative"); /* if the object is no longer there then we probably retired the object * at the netfs's request whilst the cull was in progress */ - if (!victim->d_inode) { + if (d_is_negative(victim)) { mutex_unlock(&d_inode(dir)->i_mutex); dput(victim); _leave(" = -ENOENT [absent]"); @@ -913,7 +913,7 @@ int cachefiles_cull(struct cachefiles_cache *cache, struct dentry *dir, return PTR_ERR(victim); _debug("victim -> %p %s", - victim, victim->d_inode ? "positive" : "negative"); + victim, d_backing_inode(victim) ? "positive" : "negative"); /* okay... the victim is not being used so we can cull it * - start by marking it as stale diff --git a/fs/cachefiles/rdwr.c b/fs/cachefiles/rdwr.c index c6cd8d7a4eef..3cbb0e834694 100644 --- a/fs/cachefiles/rdwr.c +++ b/fs/cachefiles/rdwr.c @@ -74,12 +74,12 @@ static int cachefiles_read_waiter(wait_queue_t *wait, unsigned mode, static int cachefiles_read_reissue(struct cachefiles_object *object, struct cachefiles_one_read *monitor) { - struct address_space *bmapping = object->backer->d_inode->i_mapping; + struct address_space *bmapping = d_backing_inode(object->backer)->i_mapping; struct page *backpage = monitor->back_page, *backpage2; int ret; _enter("{ino=%lx},{%lx,%lx}", - object->backer->d_inode->i_ino, + d_backing_inode(object->backer)->i_ino, backpage->index, backpage->flags); /* skip if the page was truncated away completely */ @@ -157,7 +157,7 @@ static void cachefiles_read_copier(struct fscache_operation *_op) object = container_of(op->op.object, struct cachefiles_object, fscache); - _enter("{ino=%lu}", object->backer->d_inode->i_ino); + _enter("{ino=%lu}", d_backing_inode(object->backer)->i_ino); max = 8; spin_lock_irq(&object->work_lock); @@ -247,7 +247,7 @@ static int cachefiles_read_backing_file_one(struct cachefiles_object *object, init_waitqueue_func_entry(&monitor->monitor, cachefiles_read_waiter); /* attempt to get hold of the backing page */ - bmapping = object->backer->d_inode->i_mapping; + bmapping = d_backing_inode(object->backer)->i_mapping; newpage = NULL; for (;;) { @@ -408,7 +408,7 @@ int cachefiles_read_or_alloc_page(struct fscache_retrieval *op, if (!object->backer) goto enobufs; - inode = object->backer->d_inode; + inode = d_backing_inode(object->backer); ASSERT(S_ISREG(inode->i_mode)); ASSERT(inode->i_mapping->a_ops->bmap); ASSERT(inode->i_mapping->a_ops->readpages); @@ -468,7 +468,7 @@ static int cachefiles_read_backing_file(struct cachefiles_object *object, struct list_head *list) { struct cachefiles_one_read *monitor = NULL; - struct address_space *bmapping = object->backer->d_inode->i_mapping; + struct address_space *bmapping = d_backing_inode(object->backer)->i_mapping; struct page *newpage = NULL, *netpage, *_n, *backpage = NULL; int ret = 0; @@ -705,7 +705,7 @@ int cachefiles_read_or_alloc_pages(struct fscache_retrieval *op, if (cachefiles_has_space(cache, 0, *nr_pages) < 0) space = 0; - inode = object->backer->d_inode; + inode = d_backing_inode(object->backer); ASSERT(S_ISREG(inode->i_mode)); ASSERT(inode->i_mapping->a_ops->bmap); ASSERT(inode->i_mapping->a_ops->readpages); diff --git a/fs/cachefiles/security.c b/fs/cachefiles/security.c index 396c18ea2764..31bbc0528b11 100644 --- a/fs/cachefiles/security.c +++ b/fs/cachefiles/security.c @@ -55,14 +55,14 @@ static int cachefiles_check_cache_dir(struct cachefiles_cache *cache, { int ret; - ret = security_inode_mkdir(root->d_inode, root, 0); + ret = security_inode_mkdir(d_backing_inode(root), root, 0); if (ret < 0) { pr_err("Security denies permission to make dirs: error %d", ret); return ret; } - ret = security_inode_create(root->d_inode, root, 0); + ret = security_inode_create(d_backing_inode(root), root, 0); if (ret < 0) pr_err("Security denies permission to create files: error %d", ret); @@ -95,7 +95,7 @@ int cachefiles_determine_cache_security(struct cachefiles_cache *cache, /* use the cache root dir's security context as the basis with * which create files */ - ret = set_create_files_as(new, root->d_inode); + ret = set_create_files_as(new, d_backing_inode(root)); if (ret < 0) { abort_creds(new); cachefiles_begin_secure(cache, _saved_cred); diff --git a/fs/cachefiles/xattr.c b/fs/cachefiles/xattr.c index a8a68745e11d..d31c1a72d8a5 100644 --- a/fs/cachefiles/xattr.c +++ b/fs/cachefiles/xattr.c @@ -33,7 +33,7 @@ int cachefiles_check_object_type(struct cachefiles_object *object) int ret; ASSERT(dentry); - ASSERT(dentry->d_inode); + ASSERT(d_backing_inode(dentry)); if (!object->fscache.cookie) strcpy(type, "C3"); @@ -52,7 +52,7 @@ int cachefiles_check_object_type(struct cachefiles_object *object) if (ret != -EEXIST) { pr_err("Can't set xattr on %pd [%lu] (err %d)\n", - dentry, dentry->d_inode->i_ino, + dentry, d_backing_inode(dentry)->i_ino, -ret); goto error; } @@ -64,7 +64,7 @@ int cachefiles_check_object_type(struct cachefiles_object *object) goto bad_type_length; pr_err("Can't read xattr on %pd [%lu] (err %d)\n", - dentry, dentry->d_inode->i_ino, + dentry, d_backing_inode(dentry)->i_ino, -ret); goto error; } @@ -84,14 +84,14 @@ error: bad_type_length: pr_err("Cache object %lu type xattr length incorrect\n", - dentry->d_inode->i_ino); + d_backing_inode(dentry)->i_ino); ret = -EIO; goto error; bad_type: xtype[2] = 0; pr_err("Cache object %pd [%lu] type %s not %s\n", - dentry, dentry->d_inode->i_ino, + dentry, d_backing_inode(dentry)->i_ino, xtype, type); ret = -EIO; goto error; @@ -165,7 +165,7 @@ int cachefiles_check_auxdata(struct cachefiles_object *object) int ret; ASSERT(dentry); - ASSERT(dentry->d_inode); + ASSERT(d_backing_inode(dentry)); ASSERT(object->fscache.cookie->def->check_aux); auxbuf = kmalloc(sizeof(struct cachefiles_xattr) + 512, GFP_KERNEL); @@ -204,7 +204,7 @@ int cachefiles_check_object_xattr(struct cachefiles_object *object, _enter("%p,#%d", object, auxdata->len); ASSERT(dentry); - ASSERT(dentry->d_inode); + ASSERT(d_backing_inode(dentry)); auxbuf = kmalloc(sizeof(struct cachefiles_xattr) + 512, cachefiles_gfp); if (!auxbuf) { @@ -225,7 +225,7 @@ int cachefiles_check_object_xattr(struct cachefiles_object *object, cachefiles_io_error_obj(object, "Can't read xattr on %lu (err %d)", - dentry->d_inode->i_ino, -ret); + d_backing_inode(dentry)->i_ino, -ret); goto error; } @@ -276,7 +276,7 @@ int cachefiles_check_object_xattr(struct cachefiles_object *object, cachefiles_io_error_obj(object, "Can't update xattr on %lu" " (error %d)", - dentry->d_inode->i_ino, -ret); + d_backing_inode(dentry)->i_ino, -ret); goto error; } } @@ -291,7 +291,7 @@ error: bad_type_length: pr_err("Cache object %lu xattr length incorrect\n", - dentry->d_inode->i_ino); + d_backing_inode(dentry)->i_ino); ret = -EIO; goto error; @@ -316,7 +316,7 @@ int cachefiles_remove_object_xattr(struct cachefiles_cache *cache, cachefiles_io_error(cache, "Can't remove xattr from %lu" " (error %d)", - dentry->d_inode->i_ino, -ret); + d_backing_inode(dentry)->i_ino, -ret); } _leave(" = %d", ret); -- cgit