diff options
| author | Weston Andros Adamson <dros@primarydata.com> | 2014-05-15 17:56:49 +0200 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2014-05-29 17:11:46 +0200 |
| commit | dd7663e7000d3408b5a5037ae8f774feaa9c0628 (patch) | |
| tree | b8f2422e7179b98b18b7873d39ac4dc3f7e4f8d9 /fs | |
| parent | nfs: page group support in nfs_mark_uptodate (diff) | |
| download | linux-dd7663e7000d3408b5a5037ae8f774feaa9c0628.tar.xz linux-dd7663e7000d3408b5a5037ae8f774feaa9c0628.zip | |
pnfs: clean up filelayout_alloc_commit_info
Remove unneeded else statement and clean up how commit info
dataserver buckets are replaced.
Suggested-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Weston Andros Adamson <dros@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/nfs/nfs4filelayout.c | 46 |
1 files changed, 26 insertions, 20 deletions
diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c index 9319427e43e3..9cea9358fe52 100644 --- a/fs/nfs/nfs4filelayout.c +++ b/fs/nfs/nfs4filelayout.c @@ -850,11 +850,15 @@ filelayout_alloc_commit_info(struct pnfs_layout_segment *lseg, { struct nfs4_filelayout_segment *fl = FILELAYOUT_LSEG(lseg); struct pnfs_commit_bucket *buckets; - int size; + int size, i; if (fl->commit_through_mds) return 0; - if (cinfo->ds->nbuckets != 0) { + + size = (fl->stripe_type == STRIPE_SPARSE) ? + fl->dsaddr->ds_num : fl->dsaddr->stripe_count; + + if (cinfo->ds->nbuckets >= size) { /* This assumes there is only one IOMODE_RW lseg. What * we really want to do is have a layout_hdr level * dictionary of <multipath_list4, fh> keys, each @@ -864,30 +868,32 @@ filelayout_alloc_commit_info(struct pnfs_layout_segment *lseg, return 0; } - size = (fl->stripe_type == STRIPE_SPARSE) ? - fl->dsaddr->ds_num : fl->dsaddr->stripe_count; - buckets = kcalloc(size, sizeof(struct pnfs_commit_bucket), gfp_flags); if (!buckets) return -ENOMEM; - else { - int i; + for (i = 0; i < size; i++) { + INIT_LIST_HEAD(&buckets[i].written); + INIT_LIST_HEAD(&buckets[i].committing); + } - spin_lock(cinfo->lock); - if (cinfo->ds->nbuckets != 0) - kfree(buckets); - else { - cinfo->ds->buckets = buckets; - cinfo->ds->nbuckets = size; - for (i = 0; i < size; i++) { - INIT_LIST_HEAD(&buckets[i].written); - INIT_LIST_HEAD(&buckets[i].committing); - } - } - spin_unlock(cinfo->lock); - return 0; + spin_lock(cinfo->lock); + if (cinfo->ds->nbuckets >= size) + goto out; + for (i = 0; i < cinfo->ds->nbuckets; i++) { + list_splice(&cinfo->ds->buckets[i].written, + &buckets[i].written); + list_splice(&cinfo->ds->buckets[i].committing, + &buckets[i].committing); + buckets[i].wlseg = cinfo->ds->buckets[i].wlseg; + buckets[i].clseg = cinfo->ds->buckets[i].clseg; } + swap(cinfo->ds->buckets, buckets); + cinfo->ds->nbuckets = size; +out: + spin_unlock(cinfo->lock); + kfree(buckets); + return 0; } static struct pnfs_layout_segment * |