/*
* 2.6.32 - 2.6.33, bdi_setup_and_register() is not available.
* 2.6.34 - 3.19, bdi_setup_and_register() takes 3 arguments.
- * 4.0 - x.y, bdi_setup_and_register() takes 2 arguments.
+ * 4.0 - 4.11, bdi_setup_and_register() takes 2 arguments.
+ * 4.12 - x.y, super_setup_bdi_name() new interface.
*/
-#if defined(HAVE_2ARGS_BDI_SETUP_AND_REGISTER)
+#if defined(HAVE_SUPER_SETUP_BDI_NAME)
+extern atomic_long_t zfs_bdi_seq;
+
+static inline int
+zpl_bdi_setup(struct super_block *sb, char *name)
+{
+ return super_setup_bdi_name(sb, "%.28s-%ld", name,
+ atomic_long_inc_return(&zfs_bdi_seq));
+}
+static inline void
+zpl_bdi_destroy(struct super_block *sb)
+{
+}
+#elif defined(HAVE_2ARGS_BDI_SETUP_AND_REGISTER)
static inline int
-zpl_bdi_setup_and_register(struct backing_dev_info *bdi, char *name)
+zpl_bdi_setup(struct super_block *sb, char *name)
+{
+ struct backing_dev_info *bdi;
+ int error;
+
+ bdi = kmem_zalloc(sizeof (struct backing_dev_info), KM_SLEEP);
+ error = bdi_setup_and_register(bdi, name);
+ if (error) {
+ kmem_free(bdi, sizeof (struct backing_dev_info));
+ return (error);
+ }
+
+ sb->s_bdi = bdi;
+
+ return (0);
+}
+static inline void
+zpl_bdi_destroy(struct super_block *sb)
{
- return (bdi_setup_and_register(bdi, name));
+ struct backing_dev_info *bdi = sb->s_bdi;
+
+ bdi_destroy(bdi);
+ kmem_free(bdi, sizeof (struct backing_dev_info));
+ sb->s_bdi = NULL;
}
#elif defined(HAVE_3ARGS_BDI_SETUP_AND_REGISTER)
static inline int
-zpl_bdi_setup_and_register(struct backing_dev_info *bdi, char *name)
+zpl_bdi_setup(struct super_block *sb, char *name)
{
- return (bdi_setup_and_register(bdi, name, BDI_CAP_MAP_COPY));
+ struct backing_dev_info *bdi;
+ int error;
+
+ bdi = kmem_zalloc(sizeof (struct backing_dev_info), KM_SLEEP);
+ error = bdi_setup_and_register(bdi, name, BDI_CAP_MAP_COPY);
+ if (error) {
+ kmem_free(sb->s_bdi, sizeof (struct backing_dev_info));
+ return (error);
+ }
+
+ sb->s_bdi = bdi;
+
+ return (0);
+}
+static inline void
+zpl_bdi_destroy(struct super_block *sb)
+{
+ struct backing_dev_info *bdi = sb->s_bdi;
+
+ bdi_destroy(bdi);
+ kmem_free(bdi, sizeof (struct backing_dev_info));
+ sb->s_bdi = NULL;
}
#else
extern atomic_long_t zfs_bdi_seq;
static inline int
-zpl_bdi_setup_and_register(struct backing_dev_info *bdi, char *name)
+zpl_bdi_setup(struct super_block *sb, char *name)
{
- char tmp[32];
+ struct backing_dev_info *bdi;
int error;
+ bdi = kmem_zalloc(sizeof (struct backing_dev_info), KM_SLEEP);
bdi->name = name;
bdi->capabilities = BDI_CAP_MAP_COPY;
error = bdi_init(bdi);
- if (error)
+ if (error) {
+ kmem_free(bdi, sizeof (struct backing_dev_info));
return (error);
+ }
- sprintf(tmp, "%.28s%s", name, "-%d");
- error = bdi_register(bdi, NULL, tmp,
+ error = bdi_register(bdi, NULL, "%.28s-%ld", name,
atomic_long_inc_return(&zfs_bdi_seq));
if (error) {
bdi_destroy(bdi);
+ kmem_free(bdi, sizeof (struct backing_dev_info));
return (error);
}
- return (error);
+ sb->s_bdi = bdi;
+
+ return (0);
+}
+static inline void
+zpl_bdi_destroy(struct super_block *sb)
+{
+ struct backing_dev_info *bdi = sb->s_bdi;
+
+ bdi_destroy(bdi);
+ kmem_free(bdi, sizeof (struct backing_dev_info));
+ sb->s_bdi = NULL;
}
#endif
#error
#endif
+/*
+ * 4.9 API change
+ * Preferred interface to get the current FS time.
+ */
+#if !defined(HAVE_CURRENT_TIME)
+static inline struct timespec
+current_time(struct inode *ip)
+{
+ return (timespec_trunc(current_kernel_time(), ip->i_sb->s_time_gran));
+}
+#endif
#endif /* _ZFS_VFS_H */