btrfs: scrub: setup all fields for sblock_to_check

scrub_setup_recheck_block() isn't setup all necessary fields for
sblock_to_check because history reason.

So current code need more arguments in severial functions,
and more local variables, just to passing these lacked values to
necessary place.

This patch setup above fields to sblock_to_check in
scrub_setup_recheck_block(), for:
1: more cleanup for function arg, local variable
2: to make sblock_to_check complete, then we can use sblock_to_check
   without concern about some uninitialized member.

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>

diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index 3e2755eb0f08a75ff0f63e397c06f76af0e9dbe6..12ed8a77f11cd5fa1933c9e1a4fc3fe022d75303 100644 (file)
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -1318,6 +1318,9 @@ static int scrub_setup_recheck_block(struct scrub_block *original_sblock,
        struct btrfs_fs_info *fs_info = sctx->dev_root->fs_info;
        u64 length = original_sblock->page_count * PAGE_SIZE;
        u64 logical = original_sblock->pagev[0]->logical;
+       u64 generation = original_sblock->pagev[0]->generation;
+       u64 flags = original_sblock->pagev[0]->flags;
+       u64 have_csum = original_sblock->pagev[0]->have_csum;
        struct scrub_recover *recover;
        struct btrfs_bio *bbio;
        u64 sublen;
@@ -1372,6 +1375,7 @@ static int scrub_setup_recheck_block(struct scrub_block *original_sblock,
 
                        sblock = sblocks_for_recheck + mirror_index;
                        sblock->sctx = sctx;
+
                        page = kzalloc(sizeof(*page), GFP_NOFS);
                        if (!page) {
 leave_nomem:
@@ -1383,7 +1387,15 @@ leave_nomem:
                        }
                        scrub_page_get(page);
                        sblock->pagev[page_index] = page;
+                       page->sblock = sblock;
+                       page->flags = flags;
+                       page->generation = generation;
                        page->logical = logical;
+                       page->have_csum = have_csum;
+                       if (have_csum)
+                               memcpy(page->csum,
+                                      original_sblock->pagev[0]->csum,
+                                      sctx->csum_size);
 
                        scrub_stripe_index_and_offset(logical,
                                                      bbio->map_type,