static void
zpl_inode_destroy(struct inode *ip)
{
- ASSERT(atomic_read(&ip->i_count) == 0);
+ ASSERT(atomic_read(&ip->i_count) == 0);
zfs_inode_destroy(ip);
}
static void
zpl_dirty_inode(struct inode *ip, int flags)
{
+ fstrans_cookie_t cookie;
+
+ cookie = spl_fstrans_mark();
zfs_dirty_inode(ip, flags);
+ spl_fstrans_unmark(cookie);
}
#else
static void
zpl_dirty_inode(struct inode *ip)
{
+ fstrans_cookie_t cookie;
+
+ cookie = spl_fstrans_mark();
zfs_dirty_inode(ip, 0);
+ spl_fstrans_unmark(cookie);
}
#endif /* HAVE_DIRTY_INODE_WITH_FLAGS */
static void
zpl_evict_inode(struct inode *ip)
{
+ fstrans_cookie_t cookie;
+
+ cookie = spl_fstrans_mark();
truncate_setsize(ip, 0);
clear_inode(ip);
zfs_inactive(ip);
+ spl_fstrans_unmark(cookie);
}
#else
+static void
+zpl_drop_inode(struct inode *ip)
+{
+ generic_delete_inode(ip);
+}
+
static void
zpl_clear_inode(struct inode *ip)
{
+ fstrans_cookie_t cookie;
+
+ cookie = spl_fstrans_mark();
zfs_inactive(ip);
+ spl_fstrans_unmark(cookie);
}
static void
truncate_setsize(ip, 0);
clear_inode(ip);
}
-
#endif /* HAVE_EVICT_INODE */
static void
zpl_put_super(struct super_block *sb)
{
+ fstrans_cookie_t cookie;
int error;
+ cookie = spl_fstrans_mark();
error = -zfs_umount(sb);
+ spl_fstrans_unmark(cookie);
ASSERT3S(error, <=, 0);
}
static int
zpl_sync_fs(struct super_block *sb, int wait)
{
+ fstrans_cookie_t cookie;
cred_t *cr = CRED();
int error;
crhold(cr);
+ cookie = spl_fstrans_mark();
error = -zfs_sync(sb, wait, cr);
+ spl_fstrans_unmark(cookie);
crfree(cr);
ASSERT3S(error, <=, 0);
static int
zpl_statfs(struct dentry *dentry, struct kstatfs *statp)
{
+ fstrans_cookie_t cookie;
int error;
+ cookie = spl_fstrans_mark();
error = -zfs_statvfs(dentry, statp);
+ spl_fstrans_unmark(cookie);
ASSERT3S(error, <=, 0);
return (error);
}
+enum {
+ TOKEN_RO,
+ TOKEN_RW,
+ TOKEN_SETUID,
+ TOKEN_NOSETUID,
+ TOKEN_EXEC,
+ TOKEN_NOEXEC,
+ TOKEN_DEVICES,
+ TOKEN_NODEVICES,
+ TOKEN_DIRXATTR,
+ TOKEN_SAXATTR,
+ TOKEN_XATTR,
+ TOKEN_NOXATTR,
+ TOKEN_ATIME,
+ TOKEN_NOATIME,
+ TOKEN_RELATIME,
+ TOKEN_NORELATIME,
+ TOKEN_NBMAND,
+ TOKEN_NONBMAND,
+ TOKEN_MNTPOINT,
+ TOKEN_LAST,
+};
+
+static const match_table_t zpl_tokens = {
+ { TOKEN_RO, MNTOPT_RO },
+ { TOKEN_RW, MNTOPT_RW },
+ { TOKEN_SETUID, MNTOPT_SETUID },
+ { TOKEN_NOSETUID, MNTOPT_NOSETUID },
+ { TOKEN_EXEC, MNTOPT_EXEC },
+ { TOKEN_NOEXEC, MNTOPT_NOEXEC },
+ { TOKEN_DEVICES, MNTOPT_DEVICES },
+ { TOKEN_NODEVICES, MNTOPT_NODEVICES },
+ { TOKEN_DIRXATTR, MNTOPT_DIRXATTR },
+ { TOKEN_SAXATTR, MNTOPT_SAXATTR },
+ { TOKEN_XATTR, MNTOPT_XATTR },
+ { TOKEN_NOXATTR, MNTOPT_NOXATTR },
+ { TOKEN_ATIME, MNTOPT_ATIME },
+ { TOKEN_NOATIME, MNTOPT_NOATIME },
+ { TOKEN_RELATIME, MNTOPT_RELATIME },
+ { TOKEN_NORELATIME, MNTOPT_NORELATIME },
+ { TOKEN_NBMAND, MNTOPT_NBMAND },
+ { TOKEN_NONBMAND, MNTOPT_NONBMAND },
+ { TOKEN_MNTPOINT, MNTOPT_MNTPOINT "=%s" },
+ { TOKEN_LAST, NULL },
+};
+
+static int
+zpl_parse_option(char *option, int token, substring_t *args, zfs_mntopts_t *zmo)
+{
+ switch (token) {
+ case TOKEN_RO:
+ zmo->z_readonly = B_TRUE;
+ zmo->z_do_readonly = B_TRUE;
+ break;
+ case TOKEN_RW:
+ zmo->z_readonly = B_FALSE;
+ zmo->z_do_readonly = B_TRUE;
+ break;
+ case TOKEN_SETUID:
+ zmo->z_setuid = B_TRUE;
+ zmo->z_do_setuid = B_TRUE;
+ break;
+ case TOKEN_NOSETUID:
+ zmo->z_setuid = B_FALSE;
+ zmo->z_do_setuid = B_TRUE;
+ break;
+ case TOKEN_EXEC:
+ zmo->z_exec = B_TRUE;
+ zmo->z_do_exec = B_TRUE;
+ break;
+ case TOKEN_NOEXEC:
+ zmo->z_exec = B_FALSE;
+ zmo->z_do_exec = B_TRUE;
+ break;
+ case TOKEN_DEVICES:
+ zmo->z_devices = B_TRUE;
+ zmo->z_do_devices = B_TRUE;
+ break;
+ case TOKEN_NODEVICES:
+ zmo->z_devices = B_FALSE;
+ zmo->z_do_devices = B_TRUE;
+ break;
+ case TOKEN_DIRXATTR:
+ zmo->z_xattr = ZFS_XATTR_DIR;
+ zmo->z_do_xattr = B_TRUE;
+ break;
+ case TOKEN_SAXATTR:
+ zmo->z_xattr = ZFS_XATTR_SA;
+ zmo->z_do_xattr = B_TRUE;
+ break;
+ case TOKEN_XATTR:
+ zmo->z_xattr = ZFS_XATTR_DIR;
+ zmo->z_do_xattr = B_TRUE;
+ break;
+ case TOKEN_NOXATTR:
+ zmo->z_xattr = ZFS_XATTR_OFF;
+ zmo->z_do_xattr = B_TRUE;
+ break;
+ case TOKEN_ATIME:
+ zmo->z_atime = B_TRUE;
+ zmo->z_do_atime = B_TRUE;
+ break;
+ case TOKEN_NOATIME:
+ zmo->z_atime = B_FALSE;
+ zmo->z_do_atime = B_TRUE;
+ break;
+ case TOKEN_RELATIME:
+ zmo->z_relatime = B_TRUE;
+ zmo->z_do_relatime = B_TRUE;
+ break;
+ case TOKEN_NORELATIME:
+ zmo->z_relatime = B_FALSE;
+ zmo->z_do_relatime = B_TRUE;
+ break;
+ case TOKEN_NBMAND:
+ zmo->z_nbmand = B_TRUE;
+ zmo->z_do_nbmand = B_TRUE;
+ break;
+ case TOKEN_NONBMAND:
+ zmo->z_nbmand = B_FALSE;
+ zmo->z_do_nbmand = B_TRUE;
+ break;
+ case TOKEN_MNTPOINT:
+ zmo->z_mntpoint = match_strdup(&args[0]);
+ if (zmo->z_mntpoint == NULL)
+ return (-ENOMEM);
+
+ break;
+ default:
+ break;
+ }
+
+ return (0);
+}
+
+/*
+ * Parse the mntopts string storing the results in provided zmo argument.
+ * If an error occurs the zmo argument will not be modified. The caller
+ * needs to set isremount when recycling an existing zfs_mntopts_t.
+ */
+static int
+zpl_parse_options(char *osname, char *mntopts, zfs_mntopts_t *zmo,
+ boolean_t isremount)
+{
+ zfs_mntopts_t *tmp_zmo;
+ int error;
+
+ tmp_zmo = zfs_mntopts_alloc();
+ tmp_zmo->z_osname = strdup(osname);
+
+ if (mntopts) {
+ substring_t args[MAX_OPT_ARGS];
+ char *tmp_mntopts, *p;
+ int token;
+
+ tmp_mntopts = strdup(mntopts);
+
+ while ((p = strsep(&tmp_mntopts, ",")) != NULL) {
+ if (!*p)
+ continue;
+
+ args[0].to = args[0].from = NULL;
+ token = match_token(p, zpl_tokens, args);
+ error = zpl_parse_option(p, token, args, tmp_zmo);
+ if (error) {
+ zfs_mntopts_free(tmp_zmo);
+ strfree(tmp_mntopts);
+ return (error);
+ }
+ }
+
+ strfree(tmp_mntopts);
+ }
+
+ if (isremount == B_TRUE) {
+ if (zmo->z_osname)
+ strfree(zmo->z_osname);
+
+ if (zmo->z_mntpoint)
+ strfree(zmo->z_mntpoint);
+ } else {
+ ASSERT3P(zmo->z_osname, ==, NULL);
+ ASSERT3P(zmo->z_mntpoint, ==, NULL);
+ }
+
+ memcpy(zmo, tmp_zmo, sizeof (zfs_mntopts_t));
+ kmem_free(tmp_zmo, sizeof (zfs_mntopts_t));
+
+ return (0);
+}
+
static int
zpl_remount_fs(struct super_block *sb, int *flags, char *data)
{
+ zfs_sb_t *zsb = sb->s_fs_info;
+ fstrans_cookie_t cookie;
int error;
- error = -zfs_remount(sb, flags, data);
+
+ error = zpl_parse_options(zsb->z_mntopts->z_osname, data,
+ zsb->z_mntopts, B_TRUE);
+ if (error)
+ return (error);
+
+ cookie = spl_fstrans_mark();
+ error = -zfs_remount(sb, flags, zsb->z_mntopts);
+ spl_fstrans_unmark(cookie);
ASSERT3S(error, <=, 0);
return (error);
}
-static void
-zpl_umount_begin(struct super_block *sb)
+static int
+__zpl_show_options(struct seq_file *seq, zfs_sb_t *zsb)
{
- zfs_sb_t *zsb = sb->s_fs_info;
- int count;
-
- /*
- * Best effort to unmount snapshots in .zfs/snapshot/. Normally this
- * isn't required because snapshots have the MNT_SHRINKABLE flag set.
- */
- if (zsb->z_ctldir)
- (void) zfsctl_unmount_snapshots(zsb, MNT_FORCE, &count);
+ seq_printf(seq, ",%s", zsb->z_flags & ZSB_XATTR ? "xattr" : "noxattr");
+
+#ifdef CONFIG_FS_POSIX_ACL
+ switch (zsb->z_acl_type) {
+ case ZFS_ACLTYPE_POSIXACL:
+ seq_puts(seq, ",posixacl");
+ break;
+ default:
+ seq_puts(seq, ",noacl");
+ break;
+ }
+#endif /* CONFIG_FS_POSIX_ACL */
+
+ return (0);
}
-/*
- * The Linux VFS automatically handles the following flags:
- * MNT_NOSUID, MNT_NODEV, MNT_NOEXEC, MNT_NOATIME, MNT_READONLY
- */
#ifdef HAVE_SHOW_OPTIONS_WITH_DENTRY
static int
zpl_show_options(struct seq_file *seq, struct dentry *root)
{
- zfs_sb_t *zsb = root->d_sb->s_fs_info;
-
- seq_printf(seq, ",%s", zsb->z_flags & ZSB_XATTR ? "xattr" : "noxattr");
-
- return (0);
+ return (__zpl_show_options(seq, root->d_sb->s_fs_info));
}
#else
static int
zpl_show_options(struct seq_file *seq, struct vfsmount *vfsp)
{
- zfs_sb_t *zsb = vfsp->mnt_sb->s_fs_info;
-
- seq_printf(seq, ",%s", zsb->z_flags & ZSB_XATTR ? "xattr" : "noxattr");
-
- return (0);
+ return (__zpl_show_options(seq, vfsp->mnt_sb->s_fs_info));
}
#endif /* HAVE_SHOW_OPTIONS_WITH_DENTRY */
static int
zpl_fill_super(struct super_block *sb, void *data, int silent)
{
+ zfs_mntopts_t *zmo = (zfs_mntopts_t *)data;
+ fstrans_cookie_t cookie;
int error;
- error = -zfs_domount(sb, data, silent);
+ cookie = spl_fstrans_mark();
+ error = -zfs_domount(sb, zmo, silent);
+ spl_fstrans_unmark(cookie);
ASSERT3S(error, <=, 0);
return (error);
zpl_mount(struct file_system_type *fs_type, int flags,
const char *osname, void *data)
{
- zpl_mount_data_t zmd = { osname, data };
+ zfs_mntopts_t *zmo = zfs_mntopts_alloc();
+ int error;
+
+ error = zpl_parse_options((char *)osname, (char *)data, zmo, B_FALSE);
+ if (error) {
+ zfs_mntopts_free(zmo);
+ return (ERR_PTR(error));
+ }
- return mount_nodev(fs_type, flags, &zmd, zpl_fill_super);
+ return (mount_nodev(fs_type, flags, zmo, zpl_fill_super));
}
#else
static int
zpl_get_sb(struct file_system_type *fs_type, int flags,
const char *osname, void *data, struct vfsmount *mnt)
{
- zpl_mount_data_t zmd = { osname, data };
+ zfs_mntopts_t *zmo = zfs_mntopts_alloc();
+ int error;
+
+ error = zpl_parse_options((char *)osname, (char *)data, zmo, B_FALSE);
+ if (error) {
+ zfs_mntopts_free(zmo);
+ return (error);
+ }
- return get_sb_nodev(fs_type, flags, &zmd, zpl_fill_super, mnt);
+ return (get_sb_nodev(fs_type, flags, zmo, zpl_fill_super, mnt));
}
#endif /* HAVE_MOUNT_NODEV */
#endif /* HAVE_S_INSTANCES_LIST_HEAD */
}
-#ifdef HAVE_SHRINK
-/*
- * Linux 3.1 - 3.x API
- *
- * The Linux 3.1 API introduced per-sb cache shrinkers to replace the
- * global ones. This allows us a mechanism to cleanly target a specific
- * zfs file system when the dnode and inode caches grow too large.
- *
- * In addition, the 3.0 kernel added the iterate_supers_type() helper
- * function which is used to safely walk all of the zfs file systems.
- */
-static void
-zpl_prune_sb(struct super_block *sb, void *arg)
-{
- int objects = 0;
- int error;
-
- error = -zfs_sb_prune(sb, *(unsigned long *)arg, &objects);
- ASSERT3S(error, <=, 0);
-
- return;
-}
-
-void
-zpl_prune_sbs(int64_t bytes_to_scan, void *private)
-{
- unsigned long nr_to_scan = (bytes_to_scan / sizeof(znode_t));
-
- iterate_supers_type(&zpl_fs_type, zpl_prune_sb, &nr_to_scan);
- kmem_reap();
-}
-#else
-/*
- * Linux 2.6.x - 3.0 API
- *
- * These are best effort interfaces are provided by the SPL to induce
- * the Linux VM subsystem to reclaim a fraction of the both dnode and
- * inode caches. Ideally, we want to just target the zfs file systems
- * however our only option is to reclaim from them all.
- */
void
-zpl_prune_sbs(int64_t bytes_to_scan, void *private)
+zpl_prune_sb(int64_t nr_to_scan, void *arg)
{
- unsigned long nr_to_scan = (bytes_to_scan / sizeof(znode_t));
+ struct super_block *sb = (struct super_block *)arg;
+ int objects = 0;
- shrink_dcache_memory(nr_to_scan, GFP_KERNEL);
- shrink_icache_memory(nr_to_scan, GFP_KERNEL);
- kmem_reap();
+ (void) -zfs_sb_prune(sb, nr_to_scan, &objects);
}
-#endif /* HAVE_SHRINK */
#ifdef HAVE_NR_CACHED_OBJECTS
static int
zpl_nr_cached_objects(struct super_block *sb)
{
- zfs_sb_t *zsb = sb->s_fs_info;
- int nr;
-
- mutex_enter(&zsb->z_znodes_lock);
- nr = zsb->z_nr_znodes;
- mutex_exit(&zsb->z_znodes_lock);
-
- return (nr);
+ return (0);
}
#endif /* HAVE_NR_CACHED_OBJECTS */
#ifdef HAVE_FREE_CACHED_OBJECTS
-/*
- * Attempt to evict some meta data from the cache. The ARC operates in
- * terms of bytes while the Linux VFS uses objects. Now because this is
- * just a best effort eviction and the exact values aren't critical so we
- * extrapolate from an object count to a byte size using the znode_t size.
- */
static void
zpl_free_cached_objects(struct super_block *sb, int nr_to_scan)
{
- arc_adjust_meta(nr_to_scan * sizeof(znode_t), B_FALSE);
+ /* noop */
}
#endif /* HAVE_FREE_CACHED_OBJECTS */
.destroy_inode = zpl_inode_destroy,
.dirty_inode = zpl_dirty_inode,
.write_inode = NULL,
- .drop_inode = NULL,
#ifdef HAVE_EVICT_INODE
.evict_inode = zpl_evict_inode,
#else
+ .drop_inode = zpl_drop_inode,
.clear_inode = zpl_clear_inode,
.delete_inode = zpl_inode_delete,
#endif /* HAVE_EVICT_INODE */
.sync_fs = zpl_sync_fs,
.statfs = zpl_statfs,
.remount_fs = zpl_remount_fs,
- .umount_begin = zpl_umount_begin,
.show_options = zpl_show_options,
.show_stats = NULL,
#ifdef HAVE_NR_CACHED_OBJECTS
projects / mirror_zfs-debian.git / blobdiff