From: Trond Myklebust trond.myklebust@hammerspace.com
[ Upstream commit 96c4145599b30c0eb6cbeaa24207802452dd1872 ]
If writepage()/writepages() saw an error, but handled it without reporting it, we should not be re-reporting that error on exit.
Signed-off-by: Trond Myklebust trond.myklebust@hammerspace.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/nfs/write.c | 21 +++++++++++++-------- 1 file changed, 13 insertions(+), 8 deletions(-)
diff --git a/fs/nfs/write.c b/fs/nfs/write.c index f15dda5efb741..0d6d7beb85053 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -621,12 +621,12 @@ static int nfs_page_async_flush(struct nfs_pageio_descriptor *pgio, WARN_ON_ONCE(test_bit(PG_CLEAN, &req->wb_flags));
/* If there is a fatal error that covers this write, just exit */ - ret = 0; mapping = page_file_mapping(page); - if (test_bit(AS_ENOSPC, &mapping->flags) || - test_bit(AS_EIO, &mapping->flags)) + ret = pgio->pg_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; /* @@ -638,6 +638,7 @@ static int nfs_page_async_flush(struct nfs_pageio_descriptor *pgio, } else ret = -EAGAIN; nfs_redirty_request(req); + pgio->pg_error = 0; } else nfs_add_stats(page_file_mapping(page)->host, NFSIOS_WRITEPAGES, 1); @@ -657,7 +658,7 @@ static int nfs_do_writepage(struct page *page, struct writeback_control *wbc, ret = nfs_page_async_flush(pgio, page); if (ret == -EAGAIN) { redirty_page_for_writepage(wbc, page); - ret = 0; + ret = AOP_WRITEPAGE_ACTIVATE; } return ret; } @@ -676,10 +677,11 @@ static int nfs_writepage_locked(struct page *page, nfs_pageio_init_write(&pgio, inode, 0, false, &nfs_async_write_completion_ops); err = nfs_do_writepage(page, wbc, &pgio); + pgio.pg_error = 0; nfs_pageio_complete(&pgio); if (err < 0) return err; - if (pgio.pg_error < 0) + if (nfs_error_is_fatal(pgio.pg_error)) return pgio.pg_error; return 0; } @@ -689,7 +691,8 @@ int nfs_writepage(struct page *page, struct writeback_control *wbc) int ret;
ret = nfs_writepage_locked(page, wbc); - unlock_page(page); + if (ret != AOP_WRITEPAGE_ACTIVATE) + unlock_page(page); return ret; }
@@ -698,7 +701,8 @@ static int nfs_writepages_callback(struct page *page, struct writeback_control * int ret;
ret = nfs_do_writepage(page, wbc, data); - unlock_page(page); + if (ret != AOP_WRITEPAGE_ACTIVATE) + unlock_page(page); return ret; }
@@ -725,6 +729,7 @@ int nfs_writepages(struct address_space *mapping, struct writeback_control *wbc) &nfs_async_write_completion_ops); pgio.pg_io_completion = ioc; err = write_cache_pages(mapping, wbc, nfs_writepages_callback, &pgio); + pgio.pg_error = 0; nfs_pageio_complete(&pgio); nfs_io_completion_put(ioc);
@@ -733,7 +738,7 @@ int nfs_writepages(struct address_space *mapping, struct writeback_control *wbc) if (err < 0) goto out_err; err = pgio.pg_error; - if (err < 0) + if (nfs_error_is_fatal(err)) goto out_err; return 0; out_err: