| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.20 43/80] NFS: Fix up return value on fatal errors in nfs_page_async_flush() | Date | Mon, 4 Feb 2019 11:37:03 +0100 |
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4.20-stable review patch. If anyone has any objections, please let me know.
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From: Trond Myklebust <trondmy@gmail.com>
commit 8fc75bed96bb94e23ca51bd9be4daf65c57697bf upstream.
Ensure that we return the fatal error value that caused us to exit nfs_page_async_flush().
Fixes: c373fff7bd25 ("NFSv4: Don't special case "launder"") Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> Cc: stable@vger.kernel.org # v4.12+ Reviewed-by: Benjamin Coddington <bcodding@redhat.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- fs/nfs/write.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-)
--- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -621,11 +621,12 @@ static int nfs_page_async_flush(struct n nfs_set_page_writeback(page); WARN_ON_ONCE(test_bit(PG_CLEAN, &req->wb_flags)); - ret = 0; + ret = req->wb_context->error; /* If there is a fatal error that covers this write, just exit */ - if (nfs_error_is_fatal_on_server(req->wb_context->error)) + if (nfs_error_is_fatal_on_server(ret)) goto out_launder; + ret = 0; if (!nfs_pageio_add_request(pgio, req)) { ret = pgio->pg_error; /* @@ -635,9 +636,9 @@ static int nfs_page_async_flush(struct n nfs_context_set_write_error(req->wb_context, ret); if (nfs_error_is_fatal_on_server(ret)) goto out_launder; - } + } else + ret = -EAGAIN; nfs_redirty_request(req); - ret = -EAGAIN; } else nfs_add_stats(page_file_mapping(page)->host, NFSIOS_WRITEPAGES, 1);
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