loop: fastfs must invalidate past bmap() for non-page cache IO

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 5b4b23ff9f1f6c8aba3c6fc48f5ad841eeaa11fe..1b3abd01605a8721e5c0c1d7dc9bdc6bb4946f31 100644 (file)
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -1752,13 +1752,11 @@ static void loop_read_bmap(struct loop_device *lo, u64 disk_start, u64 size,
        /*
         * total_size is in bytes and has been masked off to block boundaries
         */
-       u64 total_size;
        u64 this_fill;
 
        mask = (1 << inode->i_blkbits) - 1;
        disk_end = (disk_start + size + mask) & ~mask;
        nr_blocks = (disk_end - (disk_start & ~mask)) >> inode->i_blkbits;
-       total_size = nr_blocks << inode->i_blkbits;
 
        offset_to_bmap = disk_start & ~mask;
        expected_block = 0;
@@ -1807,6 +1805,9 @@ new_extent:
        }
 
        BUG_ON(total_blocks < nr_blocks);
+
+       if (!pcache)
+               lo_inval_pgcache(lo, disk_start, total_blocks << inode->i_blkbits);
 }
 
 /*