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| author | Trond Myklebust <trondmy@gmail.com> | 2020-01-06 23:25:14 +0300 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2020-01-15 18:54:33 +0300 |
| commit | 4daaeba938228f7c97e80817ccda1e091c7d3fb6 (patch) | |
| tree | d291385160b694f2f3e0834fee154122891fe4a6 /fs/nfs | |
| parent | 8c9cb71491e7fd3ebee90d9799c9ca5b769bd0f4 (diff) | |
| download | linux-4daaeba938228f7c97e80817ccda1e091c7d3fb6.tar.xz | |
NFS: Fix nfs_direct_write_reschedule_io()
The 'hdr->good_bytes' is defined as the number of bytes we expect to
read or write starting at offset hdr->io_start. In the case of a partial
read/write we may end up adjusting hdr->args.offset and hdr->args.count
to skip I/O for data that was already read/written, and so we must ensure
the calculation takes that into account.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/direct.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index 29f00da8a0b7..b768a0b42e82 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -824,7 +824,8 @@ static void nfs_direct_write_reschedule_io(struct nfs_pgio_header *hdr) dreq->flags = NFS_ODIRECT_RESCHED_WRITES; /* fake unstable write to let common nfs resend pages */ hdr->verf.committed = NFS_UNSTABLE; - hdr->good_bytes = hdr->args.count; + hdr->good_bytes = hdr->args.offset + hdr->args.count - + hdr->io_start; } spin_unlock(&dreq->lock); } |