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| author | Trond Myklebust <trond.myklebust@primarydata.com> | 2017-09-09 22:43:09 +0200 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2017-09-09 22:43:09 +0200 |
| commit | 1bd5d6d08ea7ed0794c8a3908383d6d6fc202cdd (patch) | |
| tree | 964725f949b9f7ec7aa97d40921b7b588c8a7c80 /fs/nfs | |
| parent | NFS: Don't hold the group lock when calling nfs_release_request() (diff) | |
| download | linux-1bd5d6d08ea7ed0794c8a3908383d6d6fc202cdd.tar.xz linux-1bd5d6d08ea7ed0794c8a3908383d6d6fc202cdd.zip | |
NFS: Count the bytes of skipped subrequests in nfs_lock_and_join_requests()
If we skip a subrequest due to a zero refcount, we should still count
the byte range that it covered so that we accurately reconstruct the
original request size.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/write.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 36d34a4c86bd..f68083db63c8 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -504,8 +504,12 @@ try_again: for (subreq = head->wb_this_page; subreq != head; subreq = subreq->wb_this_page) { - if (!kref_get_unless_zero(&subreq->wb_kref)) + if (!kref_get_unless_zero(&subreq->wb_kref)) { + if (subreq->wb_offset == head->wb_offset + total_bytes) + total_bytes += subreq->wb_bytes; continue; + } + while (!nfs_lock_request(subreq)) { /* * Unlock page to allow nfs_page_group_sync_on_bit() |