Merge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...

[~andy/linux] / fs / btrfs / inode.c

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index ebd7d6c37df8b39126f85e2e71364b816ddac463..8f0706210a478cc8866b3dd280b2860e75089757 100644 (file)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -360,6 +360,19 @@ again:
        nr_pages = (end >> PAGE_CACHE_SHIFT) - (start >> PAGE_CACHE_SHIFT) + 1;
        nr_pages = min(nr_pages, (128 * 1024UL) / PAGE_CACHE_SIZE);
 
+       /*
+        * we don't want to send crud past the end of i_size through
+        * compression, that's just a waste of CPU time.  So, if the
+        * end of the file is before the start of our current
+        * requested range of bytes, we bail out to the uncompressed
+        * cleanup code that can deal with all of this.
+        *
+        * It isn't really the fastest way to fix things, but this is a
+        * very uncommon corner.
+        */
+       if (actual_end <= start)
+               goto cleanup_and_bail_uncompressed;
+
        total_compressed = actual_end - start;
 
        /* we want to make sure that amount of ram required to uncompress
@@ -504,6 +517,7 @@ again:
                        goto again;
                }
        } else {
+cleanup_and_bail_uncompressed:
                /*
                 * No compression, but we still need to write the pages in
                 * the file we've been given so far.  redirty the locked
@@ -2441,6 +2455,8 @@ next_node:
                        ref->generation = leaf_gen;
                        ref->nritems = 0;
 
+                       btrfs_sort_leaf_ref(ref);
+
                        ret = btrfs_add_leaf_ref(root, ref, 0);
                        WARN_ON(ret);
                        btrfs_free_leaf_ref(root, ref);
@@ -2488,7 +2504,7 @@ noinline int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans,
        struct btrfs_path *path;
        struct btrfs_key key;
        struct btrfs_key found_key;
-       u32 found_type;
+       u32 found_type = (u8)-1;
        struct extent_buffer *leaf;
        struct btrfs_file_extent_item *fi;
        u64 extent_start = 0;
@@ -2675,6 +2691,8 @@ next:
                        if (pending_del_nr)
                                goto del_pending;
                        btrfs_release_path(root, path);
+                       if (found_type == BTRFS_INODE_ITEM_KEY)
+                               break;
                        goto search_again;
                }
 
@@ -2691,6 +2709,8 @@ del_pending:
                        BUG_ON(ret);
                        pending_del_nr = 0;
                        btrfs_release_path(root, path);
+                       if (found_type == BTRFS_INODE_ITEM_KEY)
+                               break;
                        goto search_again;
                }
        }
@@ -3470,7 +3490,14 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans,
                root->highest_inode = objectid;
 
        inode->i_uid = current_fsuid();
-       inode->i_gid = current_fsgid();
+
+       if (dir && (dir->i_mode & S_ISGID)) {
+               inode->i_gid = dir->i_gid;
+               if (S_ISDIR(mode))
+                       mode |= S_ISGID;
+       } else
+               inode->i_gid = current_fsgid();
+
        inode->i_mode = mode;
        inode->i_ino = objectid;
        inode_set_bytes(inode, 0);