diff options
Diffstat (limited to 'module/zfs/zfs_vfsops.c')
| -rw-r--r-- | module/zfs/zfs_vfsops.c | 48 |
1 files changed, 23 insertions, 25 deletions
diff --git a/module/zfs/zfs_vfsops.c b/module/zfs/zfs_vfsops.c index ed847f130..920d87e4f 100644 --- a/module/zfs/zfs_vfsops.c +++ b/module/zfs/zfs_vfsops.c @@ -600,12 +600,6 @@ zfs_sb_create(const char *osname, zfs_sb_t **zsbp) zsb->z_show_ctldir = ZFS_SNAPDIR_VISIBLE; zsb->z_os = os; - error = -bdi_init(&zsb->z_bdi); - if (error) { - kmem_free(zsb, sizeof (zfs_sb_t)); - return (error); - } - error = zfs_get_zplprop(os, ZFS_PROP_VERSION, &zsb->z_version); if (error) { goto out; @@ -807,7 +801,6 @@ zfs_sb_free(zfs_sb_t *zsb) zfs_fuid_destroy(zsb); - bdi_destroy(&zsb->z_bdi); mutex_destroy(&zsb->z_znodes_lock); mutex_destroy(&zsb->z_lock); list_destroy(&zsb->z_all_znodes); @@ -1089,9 +1082,9 @@ zfs_sb_teardown(zfs_sb_t *zsb, boolean_t unmounting) } EXPORT_SYMBOL(zfs_sb_teardown); -#ifdef HAVE_BDI -static atomic_long_t bdi_seq = ATOMIC_LONG_INIT(0); -#endif /* HAVE_BDI */ +#if defined(HAVE_BDI) && !defined(HAVE_BDI_SETUP_AND_REGISTER) +atomic_long_t zfs_bdi_seq = ATOMIC_LONG_INIT(0); +#endif /* HAVE_BDI && !HAVE_BDI_SETUP_AND_REGISTER */ int zfs_domount(struct super_block *sb, void *data, int silent) @@ -1118,7 +1111,23 @@ zfs_domount(struct super_block *sb, void *data, int silent) sb->s_time_gran = 1; sb->s_blocksize = recordsize; sb->s_blocksize_bits = ilog2(recordsize); - bdi_put_sb(sb, NULL); + +#ifdef HAVE_BDI + /* + * 2.6.32 API change, + * Added backing_device_info (BDI) per super block interfaces. A BDI + * must be configured when using a non-device backed filesystem for + * proper writeback. This is not required for older pdflush kernels. + * + * NOTE: Linux read-ahead is disabled in favor of zfs read-ahead. + */ + zsb->z_bdi.ra_pages = 0; + sb->s_bdi = &zsb->z_bdi; + + error = -bdi_setup_and_register(&zsb->z_bdi, "zfs", BDI_CAP_MAP_COPY); + if (error) + goto out; +#endif /* HAVE_BDI */ /* Set callback operations for the file system. */ sb->s_op = &zpl_super_operations; @@ -1143,16 +1152,6 @@ zfs_domount(struct super_block *sb, void *data, int silent) dmu_objset_set_user(zsb->z_os, zsb); mutex_exit(&zsb->z_os->os_user_ptr_lock); } else { - /* Disable Linux read-ahead handled by lower layers */ - zsb->z_bdi.ra_pages = 0; - - error = -bdi_register(&zsb->z_bdi, NULL, "zfs-%d", - atomic_long_inc_return(&bdi_seq)); - if (error) - goto out; - - bdi_put_sb(sb, &zsb->z_bdi); - error = zfs_sb_setup(zsb, B_TRUE); #ifdef HAVE_SNAPSHOT (void) zfs_snap_create(zsb); @@ -1193,10 +1192,9 @@ zfs_umount(struct super_block *sb) VERIFY(zfs_sb_teardown(zsb, B_TRUE) == 0); os = zsb->z_os; - if (bdi_get_sb(sb)) { - bdi_unregister(bdi_get_sb(sb)); - bdi_put_sb(sb, NULL); - } +#ifdef HAVE_BDI + bdi_destroy(sb->s_bdi); +#endif /* HAVE_BDI */ /* * z_os will be NULL if there was an error in |