Merge branch 'drm-next-ast-fixes' of ssh://people.freedesktop.org/~/linux into drm...

[karo-tx-linux.git] / fs / btrfs / file.c

diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index d3afac292d677e0ed492255ca7cb3890cde717b1..ff1cc0399b9a206c127b4707b6dcd69d455d8231 100644 (file)
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -1840,7 +1840,15 @@ int btrfs_release_file(struct inode *inode, struct file *filp)
 {
        if (filp->private_data)
                btrfs_ioctl_trans_end(filp);
-       filemap_flush(inode->i_mapping);
+       /*
+        * ordered_data_close is set by settattr when we are about to truncate
+        * a file from a non-zero size to a zero size.  This tries to
+        * flush down new bytes that may have been written if the
+        * application were using truncate to replace a file in place.
+        */
+       if (test_and_clear_bit(BTRFS_INODE_ORDERED_DATA_CLOSE,
+                              &BTRFS_I(inode)->runtime_flags))
+                       filemap_flush(inode->i_mapping);
        return 0;
 }
 
@@ -1958,7 +1966,7 @@ int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
 
        btrfs_init_log_ctx(&ctx);
 
-       ret = btrfs_log_dentry_safe(trans, root, dentry, &ctx);
+       ret = btrfs_log_dentry_safe(trans, root, dentry, start, end, &ctx);
        if (ret < 0) {
                /* Fallthrough and commit/free transaction. */
                ret = 1;
@@ -2088,10 +2096,9 @@ static int fill_holes(struct btrfs_trans_handle *trans, struct inode *inode,
                goto out;
        }
 
-       if (hole_mergeable(inode, leaf, path->slots[0]+1, offset, end)) {
+       if (hole_mergeable(inode, leaf, path->slots[0], offset, end)) {
                u64 num_bytes;
 
-               path->slots[0]++;
                key.offset = offset;
                btrfs_set_item_key_safe(root, path, &key);
                fi = btrfs_item_ptr(leaf, path->slots[0],
@@ -2216,7 +2223,7 @@ static int btrfs_punch_hole(struct inode *inode, loff_t offset, loff_t len)
                goto out_only_mutex;
        }
 
-       lockstart = round_up(offset , BTRFS_I(inode)->root->sectorsize);
+       lockstart = round_up(offset, BTRFS_I(inode)->root->sectorsize);
        lockend = round_down(offset + len,
                             BTRFS_I(inode)->root->sectorsize) - 1;
        same_page = ((offset >> PAGE_CACHE_SHIFT) ==
@@ -2277,7 +2284,7 @@ static int btrfs_punch_hole(struct inode *inode, loff_t offset, loff_t len)
                                                tail_start + tail_len, 0, 1);
                                if (ret)
                                        goto out_only_mutex;
-                               }
+                       }
                }
        }