nilfs2: wait for discard to finish
nilfs_discard_segment() doesn't wait for completion of discard
requests. This specifies BLKDEV_IFL_WAIT flag when calling
blkdev_issue_discard() in order to fix the sync failure.
Reported-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Cc: Christoph Hellwig <hch@lst.de>
diff --git a/fs/nilfs2/the_nilfs.c b/fs/nilfs2/the_nilfs.c
index 6af1c00..4317f17 100644
--- a/fs/nilfs2/the_nilfs.c
+++ b/fs/nilfs2/the_nilfs.c
@@ -775,6 +775,7 @@
start * sects_per_block,
nblocks * sects_per_block,
GFP_NOFS,
+ BLKDEV_IFL_WAIT |
BLKDEV_IFL_BARRIER);
if (ret < 0)
return ret;
@@ -785,7 +786,8 @@
ret = blkdev_issue_discard(nilfs->ns_bdev,
start * sects_per_block,
nblocks * sects_per_block,
- GFP_NOFS, BLKDEV_IFL_BARRIER);
+ GFP_NOFS,
+ BLKDEV_IFL_WAIT | BLKDEV_IFL_BARRIER);
return ret;
}