int nilfs_commit_super(struct super_block *sb, int flag) { struct the_nilfs *nilfs = sb->s_fs_info; struct nilfs_super_block **sbp = nilfs->ns_sbp; time_t t; /* nilfs->ns_sem must be locked by the caller. */ t = get_seconds(); nilfs->ns_sbwtime = t; sbp[0]->s_wtime = cpu_to_le64(t); sbp[0]->s_sum = 0; sbp[0]->s_sum = cpu_to_le32(crc32_le(nilfs->ns_crc_seed, (unsigned char *)sbp[0], nilfs->ns_sbsize)); if (flag == NILFS_SB_COMMIT_ALL && sbp[1]) { sbp[1]->s_wtime = sbp[0]->s_wtime; sbp[1]->s_sum = 0; sbp[1]->s_sum = cpu_to_le32(crc32_le(nilfs->ns_crc_seed, (unsigned char *)sbp[1], nilfs->ns_sbsize)); } clear_nilfs_sb_dirty(nilfs); nilfs->ns_flushed_device = 1; /* make sure store to ns_flushed_device cannot be reordered */ smp_wmb(); return nilfs_sync_super(sb, flag); }
int nilfs_commit_super(struct nilfs_sb_info *sbi, int dupsb) { struct the_nilfs *nilfs = sbi->s_nilfs; struct nilfs_super_block **sbp = nilfs->ns_sbp; sector_t nfreeblocks; time_t t; int err; /* nilfs->sem must be locked by the caller. */ nilfs_debug(2, "called\n"); if (sbp[0]->s_magic != NILFS_SUPER_MAGIC) { if (sbp[1] && sbp[1]->s_magic == NILFS_SUPER_MAGIC) nilfs_swap_super_block(nilfs); else { printk(KERN_CRIT "NILFS: superblock broke on dev %s\n", sbi->s_super->s_id); return -EIO; } } err = nilfs_count_free_blocks(nilfs, &nfreeblocks); if (unlikely(err)) { printk(KERN_ERR "NILFS: failed to count free blocks\n"); return err; } spin_lock(&nilfs->ns_last_segment_lock); sbp[0]->s_last_seq = cpu_to_le64(nilfs->ns_last_seq); sbp[0]->s_last_pseg = cpu_to_le64(nilfs->ns_last_pseg); sbp[0]->s_last_cno = cpu_to_le64(nilfs->ns_last_cno); spin_unlock(&nilfs->ns_last_segment_lock); t = get_seconds(); nilfs->ns_sbwtime[0] = t; sbp[0]->s_free_blocks_count = cpu_to_le64(nfreeblocks); sbp[0]->s_wtime = cpu_to_le64(t); sbp[0]->s_sum = 0; sbp[0]->s_sum = cpu_to_le32(crc32_le(nilfs->ns_crc_seed, (unsigned char *)sbp[0], nilfs->ns_sbsize)); if (dupsb && sbp[1]) { memcpy(sbp[1], sbp[0], nilfs->ns_sbsize); nilfs->ns_sbwtime[1] = t; } sbi->s_super->s_dirt = 0; return nilfs_sync_super(sbi, dupsb); }
int nilfs_commit_super(struct nilfs_sb_info *sbi, int flag) { struct the_nilfs *nilfs = sbi->s_nilfs; struct nilfs_super_block **sbp = nilfs->ns_sbp; time_t t; /* nilfs->ns_sem must be locked by the caller. */ t = get_seconds(); nilfs->ns_sbwtime = t; sbp[0]->s_wtime = cpu_to_le64(t); sbp[0]->s_sum = 0; sbp[0]->s_sum = cpu_to_le32(crc32_le(nilfs->ns_crc_seed, (unsigned char *)sbp[0], nilfs->ns_sbsize)); if (flag == NILFS_SB_COMMIT_ALL && sbp[1]) { sbp[1]->s_wtime = sbp[0]->s_wtime; sbp[1]->s_sum = 0; sbp[1]->s_sum = cpu_to_le32(crc32_le(nilfs->ns_crc_seed, (unsigned char *)sbp[1], nilfs->ns_sbsize)); } clear_nilfs_sb_dirty(nilfs); return nilfs_sync_super(sbi, flag); }