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authorJeff Layton <jlayton@redhat.com>2017-07-06 07:02:23 -0400
committerJeff Layton <jlayton@redhat.com>2017-07-06 07:02:23 -0400
commitcbeaf9510a8631e9bb0077a95fd8b0db0b3be200 (patch)
tree4c69537c66c0057e30d7ef7dd2a46f4bdb2f54db
parent76341cabbdad65c10a4162e9dfa82a6342afc02f (diff)
downloadop-kernel-dev-cbeaf9510a8631e9bb0077a95fd8b0db0b3be200.zip
op-kernel-dev-cbeaf9510a8631e9bb0077a95fd8b0db0b3be200.tar.gz
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 filemap_fdatawrite* is effectively synchronous there. Ensure that we clear the AS_EIO/AS_ENOSPC flags when filemap_fdatawrite* returns an error. Signed-off-by: Jeff Layton <jlayton@redhat.com>
-rw-r--r--mm/filemap.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/mm/filemap.c b/mm/filemap.c
index e5711b2..49bc972 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -515,6 +515,9 @@ 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);
@@ -549,6 +552,9 @@ 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);
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