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| author |   Trond Myklebust <trond.myklebust@hammerspace.com> | 2021-01-06 11:54:57 -0500 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@hammerspace.com> | 2021-01-10 13:32:52 -0500 |
| commit | 46c9ea1d4fee4cf1f8cc6001b9c14aae61b3d502 (patch) | |
| tree | 8f0287d8612116558e0684281057f9af955c039d | |
| parent | NFS/pNFS: Don't call pnfs_free_bucket_lseg() before removing the request (diff) | |
| download | linux-dev-46c9ea1d4fee4cf1f8cc6001b9c14aae61b3d502.tar.xz linux-dev-46c9ea1d4fee4cf1f8cc6001b9c14aae61b3d502.zip | |
NFS/pNFS: Don't leak DS commits in pnfs_generic_retry_commit()
We must ensure that we pass a layout segment to nfs_retry_commit() when
we're cleaning up after pnfs_bucket_alloc_ds_commits(). Otherwise,
requests that should be committed to the DS will get committed to the
MDS.
Do so by ensuring that pnfs_bucket_get_committing() always tries to
return a layout segment when it returns a non-empty page list.
Fixes: c84bea59449a ("NFS/pNFS: Simplify bucket layout segment reference counting")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
| -rw-r--r-- | fs/nfs/pnfs_nfs.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/fs/nfs/pnfs_nfs.c b/fs/nfs/pnfs_nfs.c index df20bbe8d15e..49d3389bd813 100644 --- a/fs/nfs/pnfs_nfs.c +++ b/fs/nfs/pnfs_nfs.c @@ -403,12 +403,16 @@ pnfs_bucket_get_committing(struct list_head *head, struct pnfs_commit_bucket *bucket, struct nfs_commit_info *cinfo) { + struct pnfs_layout_segment *lseg; struct list_head *pos; list_for_each(pos, &bucket->committing) cinfo->ds->ncommitting--; list_splice_init(&bucket->committing, head); - return pnfs_free_bucket_lseg(bucket); + lseg = pnfs_free_bucket_lseg(bucket); + if (!lseg) + lseg = pnfs_get_lseg(bucket->lseg); + return lseg; } static struct nfs_commit_data * @@ -420,8 +424,6 @@ pnfs_bucket_fetch_commitdata(struct pnfs_commit_bucket *bucket, if (!data) return NULL; data->lseg = pnfs_bucket_get_committing(&data->pages, bucket, cinfo); - if (!data->lseg) - data->lseg = pnfs_get_lseg(bucket->lseg); return data; } |