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authorDavid Sterba <dsterba@suse.com>2020-05-29 16:20:35 +0200
committerDavid Sterba <dsterba@suse.com>2020-07-27 12:55:23 +0200
commit100aa5d9f9f9d1163218bbbaad21bffbd8ee3e8d (patch)
tree040ebcdba64a5c1103c5751cb7cb9a590fe3fdbd /fs/btrfs/scrub.c
parent521e1022274000af1981411673e4019d44bdea7f (diff)
btrfs: scrub: clean up temporary page variables in scrub_checksum_tree_block
Add proper variable for the scrub page and use it instead of repeatedly dereferencing the other structures. Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/scrub.c')
-rw-r--r--fs/btrfs/scrub.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index 663bb2c22c50..d935ac06323f 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -1816,12 +1816,12 @@ static int scrub_checksum_tree_block(struct scrub_block *sblock)
u8 on_disk_csum[BTRFS_CSUM_SIZE];
const int num_pages = sctx->fs_info->nodesize >> PAGE_SHIFT;
int i;
- struct page *page;
+ struct scrub_page *spage;
char *kaddr;
BUG_ON(sblock->page_count < 1);
- page = sblock->pagev[0]->page;
- kaddr = page_address(page);
+ spage = sblock->pagev[0];
+ kaddr = page_address(spage->page);
h = (struct btrfs_header *)kaddr;
memcpy(on_disk_csum, h->csum, sctx->csum_size);
@@ -1830,15 +1830,15 @@ static int scrub_checksum_tree_block(struct scrub_block *sblock)
* a) don't have an extent buffer and
* b) the page is already kmapped
*/
- if (sblock->pagev[0]->logical != btrfs_stack_header_bytenr(h))
+ if (spage->logical != btrfs_stack_header_bytenr(h))
sblock->header_error = 1;
- if (sblock->pagev[0]->generation != btrfs_stack_header_generation(h)) {
+ if (spage->generation != btrfs_stack_header_generation(h)) {
sblock->header_error = 1;
sblock->generation_error = 1;
}
- if (!scrub_check_fsid(h->fsid, sblock->pagev[0]))
+ if (!scrub_check_fsid(h->fsid, spage))
sblock->header_error = 1;
if (memcmp(h->chunk_tree_uuid, fs_info->chunk_tree_uuid,