diff options
Diffstat (limited to 'fs/nfs/nfs4filelayout.c')
-rw-r--r-- | fs/nfs/nfs4filelayout.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c index 7954e16a6d83..9fd7cebbff04 100644 --- a/fs/nfs/nfs4filelayout.c +++ b/fs/nfs/nfs4filelayout.c @@ -1067,6 +1067,7 @@ filelayout_choose_commit_list(struct nfs_page *req, */ j = nfs4_fl_calc_j_index(lseg, req_offset(req)); i = select_bucket_index(fl, j); + spin_lock(cinfo->lock); buckets = cinfo->ds->buckets; list = &buckets[i].written; if (list_empty(list)) { @@ -1080,6 +1081,7 @@ filelayout_choose_commit_list(struct nfs_page *req, } set_bit(PG_COMMIT_TO_DS, &req->wb_flags); cinfo->ds->nwritten++; + spin_unlock(cinfo->lock); return list; } @@ -1176,6 +1178,7 @@ transfer_commit_list(struct list_head *src, struct list_head *dst, return ret; } +/* Note called with cinfo->lock held. */ static int filelayout_scan_ds_commit_list(struct pnfs_commit_bucket *bucket, struct nfs_commit_info *cinfo, @@ -1220,15 +1223,18 @@ static void filelayout_recover_commit_reqs(struct list_head *dst, struct nfs_commit_info *cinfo) { struct pnfs_commit_bucket *b; + struct pnfs_layout_segment *freeme; int i; +restart: spin_lock(cinfo->lock); for (i = 0, b = cinfo->ds->buckets; i < cinfo->ds->nbuckets; i++, b++) { if (transfer_commit_list(&b->written, dst, cinfo, 0)) { - spin_unlock(cinfo->lock); - pnfs_put_lseg(b->wlseg); + freeme = b->wlseg; b->wlseg = NULL; - spin_lock(cinfo->lock); + spin_unlock(cinfo->lock); + pnfs_put_lseg(freeme); + goto restart; } } cinfo->ds->nwritten = 0; @@ -1243,6 +1249,7 @@ alloc_ds_commits(struct nfs_commit_info *cinfo, struct list_head *list) struct nfs_commit_data *data; int i, j; unsigned int nreq = 0; + struct pnfs_layout_segment *freeme; fl_cinfo = cinfo->ds; bucket = fl_cinfo->buckets; @@ -1253,8 +1260,10 @@ alloc_ds_commits(struct nfs_commit_info *cinfo, struct list_head *list) if (!data) break; data->ds_commit_index = i; + spin_lock(cinfo->lock); data->lseg = bucket->clseg; bucket->clseg = NULL; + spin_unlock(cinfo->lock); list_add(&data->pages, list); nreq++; } @@ -1264,8 +1273,11 @@ alloc_ds_commits(struct nfs_commit_info *cinfo, struct list_head *list) if (list_empty(&bucket->committing)) continue; nfs_retry_commit(&bucket->committing, bucket->clseg, cinfo); - pnfs_put_lseg(bucket->clseg); + spin_lock(cinfo->lock); + freeme = bucket->clseg; bucket->clseg = NULL; + spin_unlock(cinfo->lock); + pnfs_put_lseg(freeme); } /* Caller will clean up entries put on list */ return nreq; |