-/** Merge the lock value block(&lvb) attributes 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.
- *
- * If \a kms_only is set then we do not consider the recently seen size (rss)
- * when updating the known minimum size (kms). Even when merging RSS, we will
- * take the KMS value if it's larger. This prevents getattr from stomping on
- * dirty cached pages which extend the file size. */
-int lov_merge_lvb(struct obd_export *exp,
- struct lov_stripe_md *lsm, struct ost_lvb *lvb, int kms_only)
-{
- int rc;
- __u64 kms;
-
- ENTRY;
- lov_stripe_lock(lsm);
- rc = lov_merge_lvb_kms(lsm, lvb, &kms);
- lov_stripe_unlock(lsm);
- if (kms_only)
- lvb->lvb_size = kms;
-
- CDEBUG(D_INODE, "merged for ID "DOSTID" s="LPU64" m="LPU64" a="LPU64
- " c="LPU64" b="LPU64"\n", POSTID(&lsm->lsm_oi), lvb->lvb_size,
- lvb->lvb_mtime, lvb->lvb_atime, lvb->lvb_ctime, lvb->lvb_blocks);
- RETURN(rc);
-}
-
-/* Must be called under the lov_stripe_lock() */
-int lov_adjust_kms(struct obd_export *exp, struct lov_stripe_md *lsm,
- obd_off size, int shrink)
-{
- struct lov_oinfo *loi;
- int stripe = 0;
- __u64 kms;
- ENTRY;
-
- LASSERT(spin_is_locked(&lsm->lsm_lock));
-#ifdef __KERNEL__
- LASSERT(lsm->lsm_lock_owner == current_pid());
-#endif
-
- if (shrink) {
- for (; stripe < lsm->lsm_stripe_count; stripe++) {
- struct lov_oinfo *loi = lsm->lsm_oinfo[stripe];
- kms = lov_size_to_stripe(lsm, size, stripe);
- CDEBUG(D_INODE,
- "stripe %d KMS %sing "LPU64"->"LPU64"\n",
- stripe, kms > loi->loi_kms ? "increas":"shrink",
- loi->loi_kms, kms);
- loi_kms_set(loi, loi->loi_lvb.lvb_size = kms);
- }
- RETURN(0);
- }
-
- if (size > 0)
- stripe = lov_stripe_number(lsm, size - 1);
- kms = lov_size_to_stripe(lsm, size, stripe);
- loi = lsm->lsm_oinfo[stripe];
-
- CDEBUG(D_INODE, "stripe %d KMS %sincreasing "LPU64"->"LPU64"\n",
- stripe, kms > loi->loi_kms ? "" : "not ", loi->loi_kms, kms);
- if (kms > loi->loi_kms)
- loi_kms_set(loi, kms);
-
- RETURN(0);
-}
-