[Cluster-devel] [gfs2:for-next.recovery3 2/19] fs/gfs2/lops.c:215:43: sparse: incorrect type in assignment (different base types)

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2.git for-next.recovery3
head:   725ee1535ef0a6ce4067347eac0c7c194ae01eae
commit: 92333b5f1f148bef6ebe737236d7b58b99f127c9 [2/19] gfs2: log error reform
reproduce:
        # apt-get install sparse
        git checkout 92333b5f1f148bef6ebe737236d7b58b99f127c9
        make ARCH=x86_64 allmodconfig
        make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'


sparse warnings: (new ones prefixed by >>)

>> fs/gfs2/lops.c:215:43: sparse: incorrect type in assignment (different base types) @@    expected int [signed] sd_log_error @@    got restricted blk_status_int [signed] sd_log_error @@
   fs/gfs2/lops.c:215:43:    expected int [signed] sd_log_error
   fs/gfs2/lops.c:215:43:    got restricted blk_status_t [usertype] bi_status
   include/linux/bvec.h:166:22: sparse: expression using sizeof(void)
   include/linux/bvec.h:166:22: sparse: expression using sizeof(void)

vim +215 fs/gfs2/lops.c

   193	
   194	/**
   195	 * gfs2_end_log_write - end of i/o to the log
   196	 * @bio: The bio
   197	 * @error: Status of i/o request
   198	 *
   199	 * Each bio_vec contains either data from the pagecache or data
   200	 * relating to the log itself. Here we iterate over the bio_vec
   201	 * array, processing both kinds of data.
   202	 *
   203	 */
   204	
   205	static void gfs2_end_log_write(struct bio *bio)
   206	{
   207		struct gfs2_sbd *sdp = bio->bi_private;
   208		struct bio_vec *bvec;
   209		struct page *page;
   210		int i;
   211		struct bvec_iter_all iter_all;
   212	
   213		if (bio->bi_status) {
   214			if (atomic_add_return(1, &sdp->sd_log_errors) == 1) {
 > 215				sdp->sd_log_error = bio->bi_status;
   216				fs_err(sdp, "Error %d writing to journal, jid=%u\n",
   217				       bio->bi_status, sdp->sd_jdesc->jd_jid);
   218			}
   219			wake_up(&sdp->sd_logd_waitq);
   220		}
   221	
   222		bio_for_each_segment_all(bvec, bio, i, iter_all) {
   223			page = bvec->bv_page;
   224			if (page_has_buffers(page))
   225				gfs2_end_log_write_bh(sdp, bvec, bio->bi_status);
   226			else
   227				mempool_free(page, gfs2_page_pool);
   228		}
   229	
   230		bio_put(bio);
   231		if (atomic_dec_and_test(&sdp->sd_log_in_flight))
   232			wake_up(&sdp->sd_log_flush_wait);
   233	}
   234	

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