static void ufs_put_super(struct super_block *sb) { struct ufs_sb_info * sbi = UFS_SB(sb); UFSD("ENTER\n"); if (!(sb->s_flags & MS_RDONLY)) ufs_put_super_internal(sb); ubh_brelse_uspi (sbi->s_uspi); kfree (sbi->s_uspi); kfree (sbi); sb->s_fs_info = NULL; UFSD("EXIT\n"); return; }
static void ufs_put_super(struct super_block *sb) { struct ufs_sb_info * sbi = UFS_SB(sb); UFSD("ENTER\n"); if (!(sb->s_flags & MS_RDONLY)) ufs_put_super_internal(sb); cancel_delayed_work_sync(&sbi->sync_work); ubh_brelse_uspi (sbi->s_uspi); kfree (sbi->s_uspi); mutex_destroy(&sbi->mutex); kfree (sbi); sb->s_fs_info = NULL; UFSD("EXIT\n"); return; }
static int ufs_remount (struct super_block *sb, int *mount_flags, char *data) { struct ufs_sb_private_info * uspi; struct ufs_super_block_first * usb1; struct ufs_super_block_third * usb3; unsigned new_mount_opt, ufstype; unsigned flags; sync_filesystem(sb); mutex_lock(&UFS_SB(sb)->s_lock); uspi = UFS_SB(sb)->s_uspi; flags = UFS_SB(sb)->s_flags; usb1 = ubh_get_usb_first(uspi); usb3 = ubh_get_usb_third(uspi); /* * Allow the "check" option to be passed as a remount option. * It is not possible to change ufstype option during remount */ ufstype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE; new_mount_opt = 0; ufs_set_opt (new_mount_opt, ONERROR_LOCK); if (!ufs_parse_options (data, &new_mount_opt)) { mutex_unlock(&UFS_SB(sb)->s_lock); return -EINVAL; } if (!(new_mount_opt & UFS_MOUNT_UFSTYPE)) { new_mount_opt |= ufstype; } else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) { pr_err("ufstype can't be changed during remount\n"); mutex_unlock(&UFS_SB(sb)->s_lock); return -EINVAL; } if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) { UFS_SB(sb)->s_mount_opt = new_mount_opt; mutex_unlock(&UFS_SB(sb)->s_lock); return 0; } /* * fs was mouted as rw, remounting ro */ if (*mount_flags & MS_RDONLY) { ufs_put_super_internal(sb); usb1->fs_time = cpu_to_fs32(sb, get_seconds()); if ((flags & UFS_ST_MASK) == UFS_ST_SUN || (flags & UFS_ST_MASK) == UFS_ST_SUNOS || (flags & UFS_ST_MASK) == UFS_ST_SUNx86) ufs_set_fs_state(sb, usb1, usb3, UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time)); ubh_mark_buffer_dirty (USPI_UBH(uspi)); sb->s_flags |= MS_RDONLY; } else { /* * fs was mounted as ro, remounting rw */ #ifndef CONFIG_UFS_FS_WRITE pr_err("ufs was compiled with read-only support, can't be mounted as read-write\n"); mutex_unlock(&UFS_SB(sb)->s_lock); return -EINVAL; #else if (ufstype != UFS_MOUNT_UFSTYPE_SUN && ufstype != UFS_MOUNT_UFSTYPE_SUNOS && ufstype != UFS_MOUNT_UFSTYPE_44BSD && ufstype != UFS_MOUNT_UFSTYPE_SUNx86 && ufstype != UFS_MOUNT_UFSTYPE_UFS2) { pr_err("this ufstype is read-only supported\n"); mutex_unlock(&UFS_SB(sb)->s_lock); return -EINVAL; } if (!ufs_read_cylinder_structures(sb)) { pr_err("failed during remounting\n"); mutex_unlock(&UFS_SB(sb)->s_lock); return -EPERM; } sb->s_flags &= ~MS_RDONLY; #endif } UFS_SB(sb)->s_mount_opt = new_mount_opt; mutex_unlock(&UFS_SB(sb)->s_lock); return 0; }