X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Flov%2Flov_merge.c;h=a4cf45196e567482ecf8a24b3337cfc01def94e5;hb=e9bac5fa455eab5371cdfb141b73a3beb0cc8d9c;hp=b302efa32ba35bc36d1f508dca1b23605f7fc357;hpb=725f3f8eb96203b5679da46bfc4e6d22bf1cdf9c;p=fs%2Flustre-release.git diff --git a/lustre/lov/lov_merge.c b/lustre/lov/lov_merge.c index b302efa..a4cf451 100644 --- a/lustre/lov/lov_merge.c +++ b/lustre/lov/lov_merge.c @@ -15,11 +15,7 @@ * * You should have received a copy of the GNU General Public License * version 2 along with this program; If not, see - * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf - * - * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, - * CA 95054 USA or visit www.sun.com if you need additional information or - * have any questions. + * http://www.gnu.org/licenses/gpl-2.0.html * * GPL HEADER END */ @@ -27,7 +23,7 @@ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. * Use is subject to license terms. * - * Copyright (c) 2012, Intel Corporation. + * Copyright (c) 2012, 2017, Intel Corporation. */ /* * This file is part of Lustre, http://www.lustre.org/ @@ -36,15 +32,9 @@ #define DEBUG_SUBSYSTEM S_LOV -#ifdef __KERNEL__ #include -#else -#include -#endif #include -#include - #include "lov_internal.h" /** Merge the lock value block(&lvb) attributes and KMS from each of the @@ -52,175 +42,68 @@ * 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) +int lov_merge_lvb_kms(struct lov_stripe_md *lsm, int index, + 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; + struct lov_stripe_md_entry *lse = lsm->lsm_entries[index]; + 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; - LASSERT_SPIN_LOCKED(&lsm->lsm_lock); -#ifdef __KERNEL__ - LASSERT(lsm->lsm_lock_owner == cfs_curproc_pid()); -#endif + assert_spin_locked(&lsm->lsm_lock); + LASSERT(lsm->lsm_lock_owner == current->pid); - CDEBUG(D_INODE, "MDT ID "DOSTID" initial value: s="LPU64" m="LPU64 - " a="LPU64" c="LPU64" b="LPU64"\n", POSTID(&lsm->lsm_oi), + 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]; - 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 ID "DOSTID" on OST[%u]: s="LPU64" m="LPU64 - " a="LPU64" c="LPU64" b="LPU64"\n", POSTID(&lsm->lsm_oi), + for (i = 0; i < lse->lsme_stripe_count; i++) { + struct lov_oinfo *loi = lse->lsme_oinfo[i]; + u64 lov_size; + u64 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, index, 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, index, 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); -} - -/** 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_LOCKED(&lsm->lsm_lock); -#ifdef __KERNEL__ - LASSERT(lsm->lsm_lock_owner == cfs_curproc_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); -} - -void lov_merge_attrs(struct obdo *tgt, struct obdo *src, obd_valid valid, - struct lov_stripe_md *lsm, int stripeno, int *set) -{ - valid &= src->o_valid; - - if (*set) { - if (valid & OBD_MD_FLSIZE) { - /* this handles sparse files properly */ - obd_size lov_size; - - lov_size = lov_stripe_size(lsm, src->o_size, stripeno); - if (lov_size > tgt->o_size) - tgt->o_size = lov_size; - } - if (valid & OBD_MD_FLBLOCKS) - tgt->o_blocks += src->o_blocks; - if (valid & OBD_MD_FLBLKSZ) - tgt->o_blksize += src->o_blksize; - if (valid & OBD_MD_FLCTIME && tgt->o_ctime < src->o_ctime) - tgt->o_ctime = src->o_ctime; - if (valid & OBD_MD_FLMTIME && tgt->o_mtime < src->o_mtime) - tgt->o_mtime = src->o_mtime; - if (valid & OBD_MD_FLDATAVERSION) - tgt->o_data_version += src->o_data_version; - } else { - memcpy(tgt, src, sizeof(*tgt)); - tgt->o_oi = lsm->lsm_oi; - if (valid & OBD_MD_FLSIZE) - tgt->o_size = lov_stripe_size(lsm, src->o_size, - stripeno); } - /* data_version needs to be valid on all stripes to be correct! */ - if (!(valid & OBD_MD_FLDATAVERSION)) - tgt->o_valid &= ~OBD_MD_FLDATAVERSION; - - *set += 1; + *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); }