diff options
Diffstat (limited to 'fs/btrfs/extent_map.c')
| -rw-r--r-- | fs/btrfs/extent_map.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c index 6053f9db073..8ad6f8efc5a 100644 --- a/fs/btrfs/extent_map.c +++ b/fs/btrfs/extent_map.c @@ -77,6 +77,8 @@ EXPORT_SYMBOL(alloc_extent_map); void free_extent_map(struct extent_map *em) { + if (!em) + return; if (atomic_dec_and_test(&em->refs)) { WARN_ON(em->in_tree); kmem_cache_free(extent_map_cache, em); @@ -102,6 +104,8 @@ EXPORT_SYMBOL(alloc_extent_state); void free_extent_state(struct extent_state *state) { + if (!state) + return; if (atomic_dec_and_test(&state->refs)) { WARN_ON(state->in_tree); kmem_cache_free(extent_state_cache, state); @@ -1395,8 +1399,8 @@ int extent_read_full_page(struct extent_map_tree *tree, struct page *page, if (!PagePrivate(page)) { SetPagePrivate(page); - set_page_private(page, 1); WARN_ON(!page->mapping->a_ops->invalidatepage); + set_page_private(page, 1); page_cache_get(page); } @@ -1638,7 +1642,8 @@ int extent_invalidatepage(struct extent_map_tree *tree, lock_extent(tree, start, end, GFP_NOFS); wait_on_extent_writeback(tree, start, end); - clear_extent_bit(tree, start, end, EXTENT_LOCKED | EXTENT_DIRTY, + clear_extent_bit(tree, start, end, + EXTENT_LOCKED | EXTENT_DIRTY | EXTENT_DELALLOC, 1, 1, GFP_NOFS); return 0; } |