diff options
Diffstat (limited to 'fs/btrfs/check-integrity.c')
| -rw-r--r-- | fs/btrfs/check-integrity.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/btrfs/check-integrity.c b/fs/btrfs/check-integrity.c index 6cc8296be030..169508609324 100644 --- a/fs/btrfs/check-integrity.c +++ b/fs/btrfs/check-integrity.c @@ -1555,10 +1555,11 @@ static void btrfsic_release_block_ctx(struct btrfsic_block_data_ctx *block_ctx) BUG_ON(!block_ctx->pagev); num_pages = (block_ctx->len + (u64)PAGE_SIZE - 1) >> PAGE_SHIFT; + /* Pages must be unmapped in reverse order */ while (num_pages > 0) { num_pages--; if (block_ctx->datav[num_pages]) { - kunmap(block_ctx->pagev[num_pages]); + kunmap_local(block_ctx->datav[num_pages]); block_ctx->datav[num_pages] = NULL; } if (block_ctx->pagev[num_pages]) { @@ -1637,7 +1638,7 @@ static int btrfsic_read_block(struct btrfsic_state *state, i = j; } for (i = 0; i < num_pages; i++) - block_ctx->datav[i] = kmap(block_ctx->pagev[i]); + block_ctx->datav[i] = kmap_local_page(block_ctx->pagev[i]); return block_ctx->len; } |