---- linux-stage/fs/ext4/mballoc.c 2016-11-25 15:31:40.353249364 +0530
-+++ linux-stage.orig/fs/ext4/mballoc.c 2016-11-25 15:35:07.816249363 +0530
-@@ -3369,6 +3369,11 @@
- unsigned short max = EXT4_BLOCKS_PER_GROUP(sb);
- unsigned short i, first, free = 0;
-
-+#ifdef HAVE_CLEAR_RDONLY_ON_PUT
-+ /* be quiet if readonly device */
-+ if (dev_check_rdonly(sb->s_bdev))
-+ return 0;
-+#endif
- i = mb_find_next_zero_bit(bitmap, max, 0);
-
- while (i < max) {
-@@ -3750,6 +3755,13 @@
- bit = next + 1;
- }
-
-+#ifdef HAVE_CLEAR_RDONLY_ON_PUT
-+ /* be quiet if readonly device */
-+ if (dev_check_rdonly(sb->s_bdev)) {
-+ atomic_add(free, &sbi->s_mb_discarded);
-+ return err;
-+ }
-+#endif
- /* "free < pa->pa_free" means we maybe double alloc the same blocks,
- * otherwise maybe leave some free blocks unavailable, no need to BUG.*/
- if ((free > pa->pa_free && !pa->pa_error) || (free < pa->pa_free)) {
git://git.whamcloud.com / fs / lustre-release.git / commitdiff