Merge branch 'tip/perf/core' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt...

[mirror_ubuntu-eoan-kernel.git] / fs / btrfs / ioctl.c

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 4a34c472f1261bea0c3c228e9800d04a26a6d714..c04f02c7d5bbea215557a1d8ae2fc8ccce6e5862 100644 (file)
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -252,11 +252,11 @@ static int btrfs_ioctl_setflags(struct file *file, void __user *arg)
        trans = btrfs_join_transaction(root);
        BUG_ON(IS_ERR(trans));
 
+       btrfs_update_iflags(inode);
+       inode->i_ctime = CURRENT_TIME;
        ret = btrfs_update_inode(trans, root, inode);
        BUG_ON(ret);
 
-       btrfs_update_iflags(inode);
-       inode->i_ctime = CURRENT_TIME;
        btrfs_end_transaction(trans, root);
 
        mnt_drop_write(file->f_path.mnt);
@@ -858,8 +858,10 @@ static int cluster_pages_for_defrag(struct inode *inode,
                return 0;
        file_end = (isize - 1) >> PAGE_CACHE_SHIFT;
 
+       mutex_lock(&inode->i_mutex);
        ret = btrfs_delalloc_reserve_space(inode,
                                           num_pages << PAGE_CACHE_SHIFT);
+       mutex_unlock(&inode->i_mutex);
        if (ret)
                return ret;
 again:
@@ -1216,12 +1218,12 @@ static noinline int btrfs_ioctl_resize(struct btrfs_root *root,
                *devstr = '\0';
                devstr = vol_args->name;
                devid = simple_strtoull(devstr, &end, 10);
-               printk(KERN_INFO "resizing devid %llu\n",
+               printk(KERN_INFO "btrfs: resizing devid %llu\n",
                       (unsigned long long)devid);
        }
        device = btrfs_find_device(root, devid, NULL, NULL);
        if (!device) {
-               printk(KERN_INFO "resizer unable to find device %llu\n",
+               printk(KERN_INFO "btrfs: resizer unable to find device %llu\n",
                       (unsigned long long)devid);
                ret = -EINVAL;
                goto out_unlock;
@@ -1267,7 +1269,7 @@ static noinline int btrfs_ioctl_resize(struct btrfs_root *root,
        do_div(new_size, root->sectorsize);
        new_size *= root->sectorsize;
 
-       printk(KERN_INFO "new size for %s is %llu\n",
+       printk(KERN_INFO "btrfs: new size for %s is %llu\n",
                device->name, (unsigned long long)new_size);
 
        if (new_size > old_size) {
@@ -1278,7 +1280,7 @@ static noinline int btrfs_ioctl_resize(struct btrfs_root *root,
                }
                ret = btrfs_grow_device(trans, device, new_size);
                btrfs_commit_transaction(trans, root);
-       } else {
+       } else if (new_size < old_size) {
                ret = btrfs_shrink_device(device, new_size);
        }
 
@@ -2930,11 +2932,13 @@ static long btrfs_ioctl_ino_to_path(struct btrfs_root *root, void __user *arg)
                goto out;
 
        for (i = 0; i < ipath->fspath->elem_cnt; ++i) {
-               rel_ptr = ipath->fspath->val[i] - (u64)ipath->fspath->val;
+               rel_ptr = ipath->fspath->val[i] -
+                         (u64)(unsigned long)ipath->fspath->val;
                ipath->fspath->val[i] = rel_ptr;
        }
 
-       ret = copy_to_user((void *)ipa->fspath, (void *)ipath->fspath, size);
+       ret = copy_to_user((void *)(unsigned long)ipa->fspath,
+                          (void *)(unsigned long)ipath->fspath, size);
        if (ret) {
                ret = -EFAULT;
                goto out;
@@ -3017,7 +3021,8 @@ static long btrfs_ioctl_logical_to_ino(struct btrfs_root *root,
        if (ret < 0)
                goto out;
 
-       ret = copy_to_user((void *)loi->inodes, (void *)inodes, size);
+       ret = copy_to_user((void *)(unsigned long)loi->inodes,
+                          (void *)(unsigned long)inodes, size);
        if (ret)
                ret = -EFAULT;