diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/coda/psdev.c | 2 | ||||
| -rw-r--r-- | fs/fuse/cuse.c | 2 | ||||
| -rw-r--r-- | fs/kernfs/dir.c | 26 | ||||
| -rw-r--r-- | fs/kernfs/file.c | 4 | ||||
| -rw-r--r-- | fs/kernfs/inode.c | 16 | ||||
| -rw-r--r-- | fs/kernfs/kernfs-internal.h | 2 | ||||
| -rw-r--r-- | fs/kernfs/mount.c | 8 | ||||
| -rw-r--r-- | fs/ksmbd/server.c | 11 | ||||
| -rw-r--r-- | fs/pstore/pmsg.c | 2 |
9 files changed, 41 insertions, 32 deletions
diff --git a/fs/coda/psdev.c b/fs/coda/psdev.c index b39580ad4ce5..3c3148588491 100644 --- a/fs/coda/psdev.c +++ b/fs/coda/psdev.c @@ -361,7 +361,7 @@ static int __init init_coda_psdev(void) __func__, CODA_PSDEV_MAJOR); return -EIO; } - coda_psdev_class = class_create(THIS_MODULE, "coda"); + coda_psdev_class = class_create("coda"); if (IS_ERR(coda_psdev_class)) { err = PTR_ERR(coda_psdev_class); goto out_chrdev; diff --git a/fs/fuse/cuse.c b/fs/fuse/cuse.c index 179a5c5e28fd..91e89e68177e 100644 --- a/fs/fuse/cuse.c +++ b/fs/fuse/cuse.c @@ -623,7 +623,7 @@ static int __init cuse_init(void) /* CUSE is not prepared for FUSE_DEV_IOC_CLONE */ cuse_channel_fops.unlocked_ioctl = NULL; - cuse_class = class_create(THIS_MODULE, "cuse"); + cuse_class = class_create("cuse"); if (IS_ERR(cuse_class)) return PTR_ERR(cuse_class); diff --git a/fs/kernfs/dir.c b/fs/kernfs/dir.c index 90de0e498371..45b6919903e6 100644 --- a/fs/kernfs/dir.c +++ b/fs/kernfs/dir.c @@ -17,7 +17,7 @@ #include "kernfs-internal.h" -static DEFINE_SPINLOCK(kernfs_rename_lock); /* kn->parent and ->name */ +static DEFINE_RWLOCK(kernfs_rename_lock); /* kn->parent and ->name */ /* * Don't use rename_lock to piggy back on pr_cont_buf. We don't want to * call pr_cont() while holding rename_lock. Because sometimes pr_cont() @@ -196,9 +196,9 @@ int kernfs_name(struct kernfs_node *kn, char *buf, size_t buflen) unsigned long flags; int ret; - spin_lock_irqsave(&kernfs_rename_lock, flags); + read_lock_irqsave(&kernfs_rename_lock, flags); ret = kernfs_name_locked(kn, buf, buflen); - spin_unlock_irqrestore(&kernfs_rename_lock, flags); + read_unlock_irqrestore(&kernfs_rename_lock, flags); return ret; } @@ -224,9 +224,9 @@ int kernfs_path_from_node(struct kernfs_node *to, struct kernfs_node *from, unsigned long flags; int ret; - spin_lock_irqsave(&kernfs_rename_lock, flags); + read_lock_irqsave(&kernfs_rename_lock, flags); ret = kernfs_path_from_node_locked(to, from, buf, buflen); - spin_unlock_irqrestore(&kernfs_rename_lock, flags); + read_unlock_irqrestore(&kernfs_rename_lock, flags); return ret; } EXPORT_SYMBOL_GPL(kernfs_path_from_node); @@ -294,10 +294,10 @@ struct kernfs_node *kernfs_get_parent(struct kernfs_node *kn) struct kernfs_node *parent; unsigned long flags; - spin_lock_irqsave(&kernfs_rename_lock, flags); + read_lock_irqsave(&kernfs_rename_lock, flags); parent = kn->parent; kernfs_get(parent); - spin_unlock_irqrestore(&kernfs_rename_lock, flags); + read_unlock_irqrestore(&kernfs_rename_lock, flags); return parent; } @@ -770,12 +770,15 @@ int kernfs_add_one(struct kernfs_node *kn) goto out_unlock; /* Update timestamps on the parent */ + down_write(&root->kernfs_iattr_rwsem); + ps_iattr = parent->iattr; if (ps_iattr) { ktime_get_real_ts64(&ps_iattr->ia_ctime); ps_iattr->ia_mtime = ps_iattr->ia_ctime; } + up_write(&root->kernfs_iattr_rwsem); up_write(&root->kernfs_rwsem); /* @@ -940,6 +943,8 @@ struct kernfs_root *kernfs_create_root(struct kernfs_syscall_ops *scops, idr_init(&root->ino_idr); init_rwsem(&root->kernfs_rwsem); + init_rwsem(&root->kernfs_iattr_rwsem); + init_rwsem(&root->kernfs_supers_rwsem); INIT_LIST_HEAD(&root->supers); /* @@ -1462,11 +1467,14 @@ static void __kernfs_remove(struct kernfs_node *kn) pos->parent ? pos->parent->iattr : NULL; /* update timestamps on the parent */ + down_write(&kernfs_root(kn)->kernfs_iattr_rwsem); + if (ps_iattr) { ktime_get_real_ts64(&ps_iattr->ia_ctime); ps_iattr->ia_mtime = ps_iattr->ia_ctime; } + up_write(&kernfs_root(kn)->kernfs_iattr_rwsem); kernfs_put(pos); } @@ -1723,7 +1731,7 @@ int kernfs_rename_ns(struct kernfs_node *kn, struct kernfs_node *new_parent, kernfs_get(new_parent); /* rename_lock protects ->parent and ->name accessors */ - spin_lock_irq(&kernfs_rename_lock); + write_lock_irq(&kernfs_rename_lock); old_parent = kn->parent; kn->parent = new_parent; @@ -1734,7 +1742,7 @@ int kernfs_rename_ns(struct kernfs_node *kn, struct kernfs_node *new_parent, kn->name = new_name; } - spin_unlock_irq(&kernfs_rename_lock); + write_unlock_irq(&kernfs_rename_lock); kn->hash = kernfs_name_hash(kn->name, kn->ns); kernfs_link_sibling(kn); diff --git a/fs/kernfs/file.c b/fs/kernfs/file.c index e4a50e4ff0d2..40c4661f15b7 100644 --- a/fs/kernfs/file.c +++ b/fs/kernfs/file.c @@ -922,8 +922,8 @@ repeat: root = kernfs_root(kn); /* kick fsnotify */ - down_write(&root->kernfs_rwsem); + down_read(&root->kernfs_supers_rwsem); list_for_each_entry(info, &kernfs_root(kn)->supers, node) { struct kernfs_node *parent; struct inode *p_inode = NULL; @@ -960,7 +960,7 @@ repeat: iput(inode); } - up_write(&root->kernfs_rwsem); + up_read(&root->kernfs_supers_rwsem); kernfs_put(kn); goto repeat; } diff --git a/fs/kernfs/inode.c b/fs/kernfs/inode.c index 30494dcb0df3..b22b74d1a115 100644 --- a/fs/kernfs/inode.c +++ b/fs/kernfs/inode.c @@ -101,9 +101,9 @@ int kernfs_setattr(struct kernfs_node *kn, const struct iattr *iattr) int ret; struct kernfs_root *root = kernfs_root(kn); - down_write(&root->kernfs_rwsem); + down_write(&root->kernfs_iattr_rwsem); ret = __kernfs_setattr(kn, iattr); - up_write(&root->kernfs_rwsem); + up_write(&root->kernfs_iattr_rwsem); return ret; } @@ -119,7 +119,7 @@ int kernfs_iop_setattr(struct mnt_idmap *idmap, struct dentry *dentry, return -EINVAL; root = kernfs_root(kn); - down_write(&root->kernfs_rwsem); + down_write(&root->kernfs_iattr_rwsem); error = setattr_prepare(&nop_mnt_idmap, dentry, iattr); if (error) goto out; @@ -132,7 +132,7 @@ int kernfs_iop_setattr(struct mnt_idmap *idmap, struct dentry *dentry, setattr_copy(&nop_mnt_idmap, inode, iattr); out: - up_write(&root->kernfs_rwsem); + up_write(&root->kernfs_iattr_rwsem); return error; } @@ -189,10 +189,10 @@ int kernfs_iop_getattr(struct mnt_idmap *idmap, struct kernfs_node *kn = inode->i_private; struct kernfs_root *root = kernfs_root(kn); - down_read(&root->kernfs_rwsem); + down_read(&root->kernfs_iattr_rwsem); kernfs_refresh_inode(kn, inode); generic_fillattr(&nop_mnt_idmap, inode, stat); - up_read(&root->kernfs_rwsem); + up_read(&root->kernfs_iattr_rwsem); return 0; } @@ -285,10 +285,10 @@ int kernfs_iop_permission(struct mnt_idmap *idmap, kn = inode->i_private; root = kernfs_root(kn); - down_read(&root->kernfs_rwsem); + down_read(&root->kernfs_iattr_rwsem); kernfs_refresh_inode(kn, inode); ret = generic_permission(&nop_mnt_idmap, inode, mask); - up_read(&root->kernfs_rwsem); + up_read(&root->kernfs_iattr_rwsem); return ret; } diff --git a/fs/kernfs/kernfs-internal.h b/fs/kernfs/kernfs-internal.h index 236c3a6113f1..a9b854cdfdb5 100644 --- a/fs/kernfs/kernfs-internal.h +++ b/fs/kernfs/kernfs-internal.h @@ -47,6 +47,8 @@ struct kernfs_root { wait_queue_head_t deactivate_waitq; struct rw_semaphore kernfs_rwsem; + struct rw_semaphore kernfs_iattr_rwsem; + struct rw_semaphore kernfs_supers_rwsem; }; /* +1 to avoid triggering overflow warning when negating it */ diff --git a/fs/kernfs/mount.c b/fs/kernfs/mount.c index e08e8d999807..d49606accb07 100644 --- a/fs/kernfs/mount.c +++ b/fs/kernfs/mount.c @@ -351,9 +351,9 @@ int kernfs_get_tree(struct fs_context *fc) } sb->s_flags |= SB_ACTIVE; - down_write(&root->kernfs_rwsem); + down_write(&root->kernfs_supers_rwsem); list_add(&info->node, &info->root->supers); - up_write(&root->kernfs_rwsem); + up_write(&root->kernfs_supers_rwsem); } fc->root = dget(sb->s_root); @@ -380,9 +380,9 @@ void kernfs_kill_sb(struct super_block *sb) struct kernfs_super_info *info = kernfs_info(sb); struct kernfs_root *root = info->root; - down_write(&root->kernfs_rwsem); + down_write(&root->kernfs_supers_rwsem); list_del(&info->node); - up_write(&root->kernfs_rwsem); + up_write(&root->kernfs_supers_rwsem); /* * Remove the superblock from fs_supers/s_instances diff --git a/fs/ksmbd/server.c b/fs/ksmbd/server.c index 0d8242789dc8..0979577fd23e 100644 --- a/fs/ksmbd/server.c +++ b/fs/ksmbd/server.c @@ -415,7 +415,7 @@ int server_queue_ctrl_reset_work(void) return __queue_ctrl_work(SERVER_CTRL_TYPE_RESET); } -static ssize_t stats_show(struct class *class, struct class_attribute *attr, +static ssize_t stats_show(const struct class *class, const struct class_attribute *attr, char *buf) { /* @@ -434,8 +434,8 @@ static ssize_t stats_show(struct class *class, struct class_attribute *attr, server_conf.ipc_last_active / HZ); } -static ssize_t kill_server_store(struct class *class, - struct class_attribute *attr, const char *buf, +static ssize_t kill_server_store(const struct class *class, + const struct class_attribute *attr, const char *buf, size_t len) { if (!sysfs_streq(buf, "hard")) @@ -455,7 +455,7 @@ static const char * const debug_type_strings[] = {"smb", "auth", "vfs", "oplock", "ipc", "conn", "rdma"}; -static ssize_t debug_show(struct class *class, struct class_attribute *attr, +static ssize_t debug_show(const struct class *class, const struct class_attribute *attr, char *buf) { ssize_t sz = 0; @@ -473,7 +473,7 @@ static ssize_t debug_show(struct class *class, struct class_attribute *attr, return sz; } -static ssize_t debug_store(struct class *class, struct class_attribute *attr, +static ssize_t debug_store(const struct class *class, const struct class_attribute *attr, const char *buf, size_t len) { int i; @@ -513,7 +513,6 @@ ATTRIBUTE_GROUPS(ksmbd_control_class); static struct class ksmbd_control_class = { .name = "ksmbd-control", - .owner = THIS_MODULE, .class_groups = ksmbd_control_class_groups, }; diff --git a/fs/pstore/pmsg.c b/fs/pstore/pmsg.c index ab82e5f05346..aa178304bc03 100644 --- a/fs/pstore/pmsg.c +++ b/fs/pstore/pmsg.c @@ -64,7 +64,7 @@ void pstore_register_pmsg(void) goto err; } - pmsg_class = class_create(THIS_MODULE, PMSG_NAME); + pmsg_class = class_create(PMSG_NAME); if (IS_ERR(pmsg_class)) { pr_err("device class file already in use\n"); goto err_class; |