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Message-Id: <20170616193427.13955-7-jlayton@redhat.com> Date: Fri, 16 Jun 2017 15:34:11 -0400 From: Jeff Layton <jlayton@...hat.com> To: Andrew Morton <akpm@...ux-foundation.org>, Al Viro <viro@...IV.linux.org.uk>, Jan Kara <jack@...e.cz>, tytso@....edu, axboe@...nel.dk, mawilcox@...rosoft.com, ross.zwisler@...ux.intel.com, corbet@....net, Chris Mason <clm@...com>, Josef Bacik <jbacik@...com>, David Sterba <dsterba@...e.com>, "Darrick J . Wong" <darrick.wong@...cle.com> Cc: Carlos Maiolino <cmaiolino@...hat.com>, Eryu Guan <eguan@...hat.com>, David Howells <dhowells@...hat.com>, Christoph Hellwig <hch@...radead.org>, linux-fsdevel@...r.kernel.org, linux-mm@...ck.org, linux-ext4@...r.kernel.org, linux-xfs@...r.kernel.org, linux-btrfs@...r.kernel.org, linux-block@...r.kernel.org Subject: [PATCH v7 06/22] mm: clear AS_EIO/AS_ENOSPC when writeback initiation fails filemap_write_and_wait{_range} will return an error if writeback initiation fails, but won't clear errors in the address_space. This is particularly problematic on DAX, as it's effectively synchronous. Ensure that we clear the AS_EIO/AS_ENOSPC flags when filemap_fdatawrite returns an error. Signed-off-by: Jeff Layton <jlayton@...hat.com> --- mm/filemap.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/mm/filemap.c b/mm/filemap.c index 37f286df7c95..c349a5d3a34b 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -517,6 +517,9 @@ int filemap_write_and_wait(struct address_space *mapping) int err2 = filemap_fdatawait(mapping); if (!err) err = err2; + } else { + /* Clear any previously stored errors */ + filemap_check_errors(mapping); } } else { err = filemap_check_errors(mapping); @@ -551,6 +554,9 @@ int filemap_write_and_wait_range(struct address_space *mapping, lstart, lend); if (!err) err = err2; + } else { + /* Clear any previously stored errors */ + filemap_check_errors(mapping); } } else { err = filemap_check_errors(mapping); -- 2.13.0
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