Function Ext2LoadGroup

Ext4Fsd/ext3/generic.c:203–260

BOOLEAN
Ext2LoadGroup(IN PEXT2_VCB Vcb)
{
    struct super_block  *sb = &Vcb->sb;
    struct ext4_sb_info *sbi = &Vcb->sbi;
    ext3_fsblk_t sb_block = 1;
    unsigned long i;
    BOOLEAN rc = FALSE;

    __try {

        ExAcquireResourceExclusiveLite(&Vcb->sbi.s_gd_lock, TRUE);

        if (NULL == sbi->s_gd) {
            sbi->s_gd = kzalloc(sbi->s_gdb_count * sizeof(struct ext3_gd),
                                        GFP_KERNEL);
        }
        if (sbi->s_gd == NULL) {
            DEBUG(DL_ERR, ("Ext2LoadGroup: not enough memory.\n"));
            __leave;
        }

        if (BLOCK_SIZE != EXT3_MIN_BLOCK_SIZE) {
            sb_block = EXT4_MIN_BLOCK_SIZE / BLOCK_SIZE;
        }

        for (i = 0; i < sbi->s_gdb_count; i++) {
            sbi->s_gd[i].block =  descriptor_loc(sb, sb_block, i);
            if (!sbi->s_gd[i].block) {
                DEBUG(DL_ERR, ("Ext2LoadGroup: can't locate group descriptor %d\n", i));
                __leave;
            }
        }

        if (!Ext2LoadGroupBH(Vcb)) {
            DEBUG(DL_ERR, ("Ext2LoadGroup: Failed to load group descriptions !\n"));
            __leave;
        }

        if (!ext4_check_descriptors(sb)) {
            DbgBreak();
            DEBUG(DL_ERR, ("Ext2LoadGroup: group descriptors corrupted !\n"));
            __leave;
        }

        SetFlag(Vcb->Flags, VCB_GD_LOADED);
        rc = TRUE;

    } __finally {

        if (!rc)
            Ext2PutGroup(Vcb);

        ExReleaseResourceLite(&Vcb->sbi.s_gd_lock);
    }

    return rc;
}