From e0bf68ddec4f4f90e5871404be4f1854c17f3120 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Tue, 16 Oct 2007 23:25:46 -0700 Subject: mm: bdi init hooks provide BDI constructor/destructor hooks [akpm@linux-foundation.org: compile fix] Signed-off-by: Peter Zijlstra Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/char_dev.c | 1 + fs/configfs/configfs_internal.h | 2 ++ fs/configfs/inode.c | 8 ++++++++ fs/configfs/mount.c | 9 +++++++++ fs/fuse/inode.c | 9 +++++++++ fs/hugetlbfs/inode.c | 9 ++++++++- fs/nfs/client.c | 6 ++++++ fs/ocfs2/dlm/dlmfs.c | 9 ++++++++- fs/ramfs/inode.c | 12 +++++++++++- fs/sysfs/inode.c | 5 +++++ fs/sysfs/mount.c | 4 ++++ fs/sysfs/sysfs.h | 1 + 12 files changed, 72 insertions(+), 3 deletions(-) (limited to 'fs') diff --git a/fs/char_dev.c b/fs/char_dev.c index bbbf07b..c3bfa76 100644 --- a/fs/char_dev.c +++ b/fs/char_dev.c @@ -545,6 +545,7 @@ static struct kobject *base_probe(dev_t dev, int *part, void *data) void __init chrdev_init(void) { cdev_map = kobj_map_init(base_probe, &chrdevs_lock); + bdi_init(&directly_mappable_cdev_bdi); } diff --git a/fs/configfs/configfs_internal.h b/fs/configfs/configfs_internal.h index 3b0185f..cca9860 100644 --- a/fs/configfs/configfs_internal.h +++ b/fs/configfs/configfs_internal.h @@ -56,6 +56,8 @@ extern int configfs_is_root(struct config_item *item); extern struct inode * configfs_new_inode(mode_t mode, struct configfs_dirent *); extern int configfs_create(struct dentry *, int mode, int (*init)(struct inode *)); +extern int configfs_inode_init(void); +extern void configfs_inode_exit(void); extern int configfs_create_file(struct config_item *, const struct configfs_attribute *); extern int configfs_make_dirent(struct configfs_dirent *, diff --git a/fs/configfs/inode.c b/fs/configfs/inode.c index dbd257d..4c1ebff 100644 --- a/fs/configfs/inode.c +++ b/fs/configfs/inode.c @@ -256,4 +256,12 @@ void configfs_hash_and_remove(struct dentry * dir, const char * name) mutex_unlock(&dir->d_inode->i_mutex); } +int __init configfs_inode_init(void) +{ + return bdi_init(&configfs_backing_dev_info); +} +void __exit configfs_inode_exit(void) +{ + bdi_destroy(&configfs_backing_dev_info); +} diff --git a/fs/configfs/mount.c b/fs/configfs/mount.c index 871b0cb6..3bf0278 100644 --- a/fs/configfs/mount.c +++ b/fs/configfs/mount.c @@ -154,8 +154,16 @@ static int __init configfs_init(void) subsystem_unregister(&config_subsys); kmem_cache_destroy(configfs_dir_cachep); configfs_dir_cachep = NULL; + goto out; } + err = configfs_inode_init(); + if (err) { + unregister_filesystem(&configfs_fs_type); + subsystem_unregister(&config_subsys); + kmem_cache_destroy(configfs_dir_cachep); + configfs_dir_cachep = NULL; + } out: return err; } @@ -166,6 +174,7 @@ static void __exit configfs_exit(void) subsystem_unregister(&config_subsys); kmem_cache_destroy(configfs_dir_cachep); configfs_dir_cachep = NULL; + configfs_inode_exit(); } MODULE_AUTHOR("Oracle"); diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index 5448f62..ca30b6a 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -401,6 +401,7 @@ static int fuse_show_options(struct seq_file *m, struct vfsmount *mnt) static struct fuse_conn *new_conn(void) { struct fuse_conn *fc; + int err; fc = kzalloc(sizeof(*fc), GFP_KERNEL); if (fc) { @@ -416,10 +417,17 @@ static struct fuse_conn *new_conn(void) atomic_set(&fc->num_waiting, 0); fc->bdi.ra_pages = (VM_MAX_READAHEAD * 1024) / PAGE_CACHE_SIZE; fc->bdi.unplug_io_fn = default_unplug_io_fn; + err = bdi_init(&fc->bdi); + if (err) { + kfree(fc); + fc = NULL; + goto out; + } fc->reqctr = 0; fc->blocked = 1; get_random_bytes(&fc->scramble_key, sizeof(fc->scramble_key)); } +out: return fc; } @@ -429,6 +437,7 @@ void fuse_conn_put(struct fuse_conn *fc) if (fc->destroy_req) fuse_request_free(fc->destroy_req); mutex_destroy(&fc->inst_mutex); + bdi_destroy(&fc->bdi); kfree(fc); } } diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index 04598e1..0d9a205 100644 --- a/fs/hugetlbfs/inode.c +++ b/fs/hugetlbfs/inode.c @@ -974,11 +974,15 @@ static int __init init_hugetlbfs_fs(void) int error; struct vfsmount *vfsmount; + error = bdi_init(&hugetlbfs_backing_dev_info); + if (error) + return error; + hugetlbfs_inode_cachep = kmem_cache_create("hugetlbfs_inode_cache", sizeof(struct hugetlbfs_inode_info), 0, 0, init_once); if (hugetlbfs_inode_cachep == NULL) - return -ENOMEM; + goto out2; error = register_filesystem(&hugetlbfs_fs_type); if (error) @@ -996,6 +1000,8 @@ static int __init init_hugetlbfs_fs(void) out: if (error) kmem_cache_destroy(hugetlbfs_inode_cachep); + out2: + bdi_destroy(&hugetlbfs_backing_dev_info); return error; } @@ -1003,6 +1009,7 @@ static void __exit exit_hugetlbfs_fs(void) { kmem_cache_destroy(hugetlbfs_inode_cachep); unregister_filesystem(&hugetlbfs_fs_type); + bdi_destroy(&hugetlbfs_backing_dev_info); } module_init(init_hugetlbfs_fs) diff --git a/fs/nfs/client.c b/fs/nfs/client.c index a532ee1..70587f3 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -627,6 +627,7 @@ static void nfs_server_set_fsinfo(struct nfs_server *server, struct nfs_fsinfo * if (server->rsize > NFS_MAX_FILE_IO_SIZE) server->rsize = NFS_MAX_FILE_IO_SIZE; server->rpages = (server->rsize + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT; + server->backing_dev_info.ra_pages = server->rpages * NFS_MAX_READAHEAD; if (server->wsize > max_rpc_payload) @@ -677,6 +678,10 @@ static int nfs_probe_fsinfo(struct nfs_server *server, struct nfs_fh *mntfh, str goto out_error; nfs_server_set_fsinfo(server, &fsinfo); + error = bdi_init(&server->backing_dev_info); + if (error) + goto out_error; + /* Get some general file system info */ if (server->namelen == 0) { @@ -756,6 +761,7 @@ void nfs_free_server(struct nfs_server *server) nfs_put_client(server->nfs_client); nfs_free_iostats(server->io_stats); + bdi_destroy(&server->backing_dev_info); kfree(server); nfs_release_automount_timer(); dprintk("<-- nfs_free_server()\n"); diff --git a/fs/ocfs2/dlm/dlmfs.c b/fs/ocfs2/dlm/dlmfs.c index 7418dc8..1150412 100644 --- a/fs/ocfs2/dlm/dlmfs.c +++ b/fs/ocfs2/dlm/dlmfs.c @@ -588,13 +588,17 @@ static int __init init_dlmfs_fs(void) dlmfs_print_version(); + status = bdi_init(&dlmfs_backing_dev_info); + if (status) + return status; + dlmfs_inode_cache = kmem_cache_create("dlmfs_inode_cache", sizeof(struct dlmfs_inode_private), 0, (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT| SLAB_MEM_SPREAD), dlmfs_init_once); if (!dlmfs_inode_cache) - return -ENOMEM; + goto bail; cleanup_inode = 1; user_dlm_worker = create_singlethread_workqueue("user_dlm"); @@ -611,6 +615,7 @@ bail: kmem_cache_destroy(dlmfs_inode_cache); if (cleanup_worker) destroy_workqueue(user_dlm_worker); + bdi_destroy(&dlmfs_backing_dev_info); } else printk("OCFS2 User DLM kernel interface loaded\n"); return status; @@ -624,6 +629,8 @@ static void __exit exit_dlmfs_fs(void) destroy_workqueue(user_dlm_worker); kmem_cache_destroy(dlmfs_inode_cache); + + bdi_destroy(&dlmfs_backing_dev_info); } MODULE_AUTHOR("Oracle"); diff --git a/fs/ramfs/inode.c b/fs/ramfs/inode.c index ef2b46d..8428d5b 100644 --- a/fs/ramfs/inode.c +++ b/fs/ramfs/inode.c @@ -223,7 +223,17 @@ module_exit(exit_ramfs_fs) int __init init_rootfs(void) { - return register_filesystem(&rootfs_fs_type); + int err; + + err = bdi_init(&ramfs_backing_dev_info); + if (err) + return err; + + err = register_filesystem(&rootfs_fs_type); + if (err) + bdi_destroy(&ramfs_backing_dev_info); + + return err; } MODULE_LICENSE("GPL"); diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c index c4ef945..d9262f7 100644 --- a/fs/sysfs/inode.c +++ b/fs/sysfs/inode.c @@ -37,6 +37,11 @@ static const struct inode_operations sysfs_inode_operations ={ .setattr = sysfs_setattr, }; +int __init sysfs_inode_init(void) +{ + return bdi_init(&sysfs_backing_dev_info); +} + int sysfs_setattr(struct dentry * dentry, struct iattr * iattr) { struct inode * inode = dentry->d_inode; diff --git a/fs/sysfs/mount.c b/fs/sysfs/mount.c index c76c540..7416826 100644 --- a/fs/sysfs/mount.c +++ b/fs/sysfs/mount.c @@ -92,6 +92,10 @@ int __init sysfs_init(void) if (!sysfs_dir_cachep) goto out; + err = sysfs_inode_init(); + if (err) + goto out_err; + err = register_filesystem(&sysfs_fs_type); if (!err) { sysfs_mount = kern_mount(&sysfs_fs_type); diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h index f0326f2..f841798 100644 --- a/fs/sysfs/sysfs.h +++ b/fs/sysfs/sysfs.h @@ -146,6 +146,7 @@ static inline void sysfs_put(struct sysfs_dirent *sd) struct inode *sysfs_get_inode(struct sysfs_dirent *sd); int sysfs_setattr(struct dentry *dentry, struct iattr *iattr); int sysfs_hash_and_remove(struct sysfs_dirent *dir_sd, const char *name); +int sysfs_inode_init(void); /* * file.c -- cgit v1.1