diff options
Diffstat (limited to 'fs/namespace.c')
| -rw-r--r-- | fs/namespace.c | 25 |
1 files changed, 10 insertions, 15 deletions
diff --git a/fs/namespace.c b/fs/namespace.c index b696e3a0d18..ddbda13c2d3 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -28,6 +28,7 @@ #include <asm/uaccess.h> #include <asm/unistd.h> #include "pnode.h" +#include "internal.h" /* spinlock for vfsmount related operations, inplace of dcache_lock */ __cacheline_aligned_in_smp DEFINE_SPINLOCK(vfsmount_lock); @@ -320,22 +321,16 @@ EXPORT_SYMBOL(mnt_unpin); static void *m_start(struct seq_file *m, loff_t *pos) { struct mnt_namespace *n = m->private; - struct list_head *p; - loff_t l = *pos; down_read(&namespace_sem); - list_for_each(p, &n->list) - if (!l--) - return list_entry(p, struct vfsmount, mnt_list); - return NULL; + return seq_list_start(&n->list, *pos); } static void *m_next(struct seq_file *m, void *v, loff_t *pos) { struct mnt_namespace *n = m->private; - struct list_head *p = ((struct vfsmount *)v)->mnt_list.next; - (*pos)++; - return p == &n->list ? NULL : list_entry(p, struct vfsmount, mnt_list); + + return seq_list_next(v, &n->list, pos); } static void m_stop(struct seq_file *m, void *v) @@ -350,7 +345,7 @@ static inline void mangle(struct seq_file *m, const char *s) static int show_vfsmnt(struct seq_file *m, void *v) { - struct vfsmount *mnt = v; + struct vfsmount *mnt = list_entry(v, struct vfsmount, mnt_list); int err = 0; static struct proc_fs_info { int flag; @@ -405,7 +400,7 @@ struct seq_operations mounts_op = { static int show_vfsstat(struct seq_file *m, void *v) { - struct vfsmount *mnt = v; + struct vfsmount *mnt = list_entry(v, struct vfsmount, mnt_list); int err = 0; /* device */ @@ -1457,7 +1452,7 @@ static struct mnt_namespace *dup_mnt_ns(struct mnt_namespace *mnt_ns, new_ns = kmalloc(sizeof(struct mnt_namespace), GFP_KERNEL); if (!new_ns) - return NULL; + return ERR_PTR(-ENOMEM); atomic_set(&new_ns->count, 1); INIT_LIST_HEAD(&new_ns->list); @@ -1471,7 +1466,7 @@ static struct mnt_namespace *dup_mnt_ns(struct mnt_namespace *mnt_ns, if (!new_ns->root) { up_write(&namespace_sem); kfree(new_ns); - return NULL; + return ERR_PTR(-ENOMEM);; } spin_lock(&vfsmount_lock); list_add_tail(&new_ns->list, &new_ns->root->mnt_list); @@ -1515,7 +1510,7 @@ static struct mnt_namespace *dup_mnt_ns(struct mnt_namespace *mnt_ns, return new_ns; } -struct mnt_namespace *copy_mnt_ns(int flags, struct mnt_namespace *ns, +struct mnt_namespace *copy_mnt_ns(unsigned long flags, struct mnt_namespace *ns, struct fs_struct *new_fs) { struct mnt_namespace *new_ns; @@ -1806,7 +1801,7 @@ void __init mnt_init(unsigned long mempages) init_rwsem(&namespace_sem); mnt_cache = kmem_cache_create("mnt_cache", sizeof(struct vfsmount), - 0, SLAB_HWCACHE_ALIGN | SLAB_PANIC, NULL, NULL); + 0, SLAB_HWCACHE_ALIGN | SLAB_PANIC, NULL); mount_hashtable = (struct list_head *)__get_free_page(GFP_ATOMIC); |