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Commit cbeaf951 authored by Jeff Layton's avatar Jeff Layton
Browse files

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: default avatarJeff Layton <jlayton@redhat.com>
parent 76341cab

mm/filemap.c

+6 −0
Original line number Diff line number Diff line
@@ -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);