C++ (Cpp) OST_LVB_IS_ERR Examples

Example #1

File: lov_merge.c Project: 020gzh/linux

/** Merge the lock value block(&lvb) attributes and KMS from each of the
 * stripes in a file into a single lvb. It is expected that the caller
 * initializes the current atime, mtime, ctime to avoid regressing a more
 * uptodate time on the local client.
 */
int lov_merge_lvb_kms(struct lov_stripe_md *lsm,
		      struct ost_lvb *lvb, __u64 *kms_place)
{
	__u64 size = 0;
	__u64 kms = 0;
	__u64 blocks = 0;
	s64 current_mtime = lvb->lvb_mtime;
	s64 current_atime = lvb->lvb_atime;
	s64 current_ctime = lvb->lvb_ctime;
	int i;
	int rc = 0;

	assert_spin_locked(&lsm->lsm_lock);
	LASSERT(lsm->lsm_lock_owner == current_pid());

	CDEBUG(D_INODE, "MDT ID "DOSTID" initial value: s=%llu m=%llu a=%llu c=%llu b=%llu\n",
	       POSTID(&lsm->lsm_oi), lvb->lvb_size, lvb->lvb_mtime,
	       lvb->lvb_atime, lvb->lvb_ctime, lvb->lvb_blocks);
	for (i = 0; i < lsm->lsm_stripe_count; i++) {
		struct lov_oinfo *loi = lsm->lsm_oinfo[i];
		u64 lov_size, tmpsize;

		if (OST_LVB_IS_ERR(loi->loi_lvb.lvb_blocks)) {
			rc = OST_LVB_GET_ERR(loi->loi_lvb.lvb_blocks);
			continue;
		}

		tmpsize = loi->loi_kms;
		lov_size = lov_stripe_size(lsm, tmpsize, i);
		if (lov_size > kms)
			kms = lov_size;

		if (loi->loi_lvb.lvb_size > tmpsize)
			tmpsize = loi->loi_lvb.lvb_size;

		lov_size = lov_stripe_size(lsm, tmpsize, i);
		if (lov_size > size)
			size = lov_size;
		/* merge blocks, mtime, atime */
		blocks += loi->loi_lvb.lvb_blocks;
		if (loi->loi_lvb.lvb_mtime > current_mtime)
			current_mtime = loi->loi_lvb.lvb_mtime;
		if (loi->loi_lvb.lvb_atime > current_atime)
			current_atime = loi->loi_lvb.lvb_atime;
		if (loi->loi_lvb.lvb_ctime > current_ctime)
			current_ctime = loi->loi_lvb.lvb_ctime;

		CDEBUG(D_INODE, "MDT ID "DOSTID" on OST[%u]: s=%llu m=%llu a=%llu c=%llu b=%llu\n",
		       POSTID(&lsm->lsm_oi), loi->loi_ost_idx,
		       loi->loi_lvb.lvb_size, loi->loi_lvb.lvb_mtime,
		       loi->loi_lvb.lvb_atime, loi->loi_lvb.lvb_ctime,
		       loi->loi_lvb.lvb_blocks);
	}

	*kms_place = kms;
	lvb->lvb_size = size;
	lvb->lvb_blocks = blocks;
	lvb->lvb_mtime = current_mtime;
	lvb->lvb_atime = current_atime;
	lvb->lvb_ctime = current_ctime;
	return rc;
}

Example #2

File: lov_merge.c Project: dmlb2000/lustre-release

/** Merge the lock value block(&lvb) attributes and KMS from each of the
 * stripes in a file into a single lvb. It is expected that the caller
 * initializes the current atime, mtime, ctime to avoid regressing a more
 * uptodate time on the local client.
 */
int lov_merge_lvb_kms(struct lov_stripe_md *lsm,
                      struct ost_lvb *lvb, __u64 *kms_place)
{
    __u64 size = 0;
    __u64 kms = 0;
    __u64 blocks = 0;
    obd_time current_mtime = lvb->lvb_mtime;
    obd_time current_atime = lvb->lvb_atime;
    obd_time current_ctime = lvb->lvb_ctime;
    int i;
    int rc = 0;

    LASSERT_SPIN_LOCKED(&lsm->lsm_lock);
#ifdef __KERNEL__
    LASSERT(lsm->lsm_lock_owner == cfs_curproc_pid());
#endif

    CDEBUG(D_INODE, "MDT FID "DFID" initial value: s="LPU64" m="LPU64
           " a="LPU64" c="LPU64" b="LPU64"\n",
           lsm->lsm_object_seq, (__u32)lsm->lsm_object_id,
           (__u32)(lsm->lsm_object_id >> 32), lvb->lvb_size,
           lvb->lvb_mtime, lvb->lvb_atime, lvb->lvb_ctime, lvb->lvb_blocks);
    for (i = 0; i < lsm->lsm_stripe_count; i++) {
        struct lov_oinfo *loi = lsm->lsm_oinfo[i];
        obd_size lov_size, tmpsize;

        if (OST_LVB_IS_ERR(loi->loi_lvb.lvb_blocks)) {
            rc = OST_LVB_GET_ERR(loi->loi_lvb.lvb_blocks);
            continue;
        }

        tmpsize = loi->loi_kms;
        lov_size = lov_stripe_size(lsm, tmpsize, i);
        if (lov_size > kms)
            kms = lov_size;

        if (loi->loi_lvb.lvb_size > tmpsize)
            tmpsize = loi->loi_lvb.lvb_size;

        lov_size = lov_stripe_size(lsm, tmpsize, i);
        if (lov_size > size)
            size = lov_size;
        /* merge blocks, mtime, atime */
        blocks += loi->loi_lvb.lvb_blocks;
        if (loi->loi_lvb.lvb_mtime > current_mtime)
            current_mtime = loi->loi_lvb.lvb_mtime;
        if (loi->loi_lvb.lvb_atime > current_atime)
            current_atime = loi->loi_lvb.lvb_atime;
        if (loi->loi_lvb.lvb_ctime > current_ctime)
            current_ctime = loi->loi_lvb.lvb_ctime;
        CDEBUG(D_INODE, "MDT FID "DFID" on OST[%u]: s="LPU64" m="LPU64
               " a="LPU64" c="LPU64" b="LPU64"\n",
               lsm->lsm_object_seq, (__u32)lsm->lsm_object_id,
               (__u32)(lsm->lsm_object_id >> 32), loi->loi_ost_idx,
               loi->loi_lvb.lvb_size, loi->loi_lvb.lvb_mtime,
               loi->loi_lvb.lvb_atime, loi->loi_lvb.lvb_ctime,
               loi->loi_lvb.lvb_blocks);
    }

    *kms_place = kms;
    lvb->lvb_size = size;
    lvb->lvb_blocks = blocks;
    lvb->lvb_mtime = current_mtime;
    lvb->lvb_atime = current_atime;
    lvb->lvb_ctime = current_ctime;
    RETURN(rc);
}