Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux...
[~shefty/rdma-dev.git] / fs / btrfs / file.c
index 859ba2dd88903ba207c7b0e448e0f5ce7f99e46e..e8d06b6b9194af2839c686d9a651a56852876f96 100644 (file)
@@ -1604,6 +1604,14 @@ static long btrfs_fallocate(struct file *file, int mode,
        if (mode & ~FALLOC_FL_KEEP_SIZE)
                return -EOPNOTSUPP;
 
+       /*
+        * Make sure we have enough space before we do the
+        * allocation.
+        */
+       ret = btrfs_check_data_free_space(inode, len);
+       if (ret)
+               return ret;
+
        /*
         * wait for ordered IO before we have any locks.  We'll loop again
         * below with the locks held.
@@ -1667,27 +1675,12 @@ static long btrfs_fallocate(struct file *file, int mode,
                if (em->block_start == EXTENT_MAP_HOLE ||
                    (cur_offset >= inode->i_size &&
                     !test_bit(EXTENT_FLAG_PREALLOC, &em->flags))) {
-
-                       /*
-                        * Make sure we have enough space before we do the
-                        * allocation.
-                        */
-                       ret = btrfs_check_data_free_space(inode, last_byte -
-                                                         cur_offset);
-                       if (ret) {
-                               free_extent_map(em);
-                               break;
-                       }
-
                        ret = btrfs_prealloc_file_range(inode, mode, cur_offset,
                                                        last_byte - cur_offset,
                                                        1 << inode->i_blkbits,
                                                        offset + len,
                                                        &alloc_hint);
 
-                       /* Let go of our reservation. */
-                       btrfs_free_reserved_data_space(inode, last_byte -
-                                                      cur_offset);
                        if (ret < 0) {
                                free_extent_map(em);
                                break;
@@ -1715,6 +1708,8 @@ static long btrfs_fallocate(struct file *file, int mode,
                             &cached_state, GFP_NOFS);
 out:
        mutex_unlock(&inode->i_mutex);
+       /* Let go of our reservation. */
+       btrfs_free_reserved_data_space(inode, len);
        return ret;
 }
 
@@ -1761,7 +1756,7 @@ static int find_desired_extent(struct inode *inode, loff_t *offset, int origin)
                                                     start - root->sectorsize,
                                                     root->sectorsize, 0);
                if (IS_ERR(em)) {
-                       ret = -ENXIO;
+                       ret = PTR_ERR(em);
                        goto out;
                }
                last_end = em->start + em->len;
@@ -1773,7 +1768,7 @@ static int find_desired_extent(struct inode *inode, loff_t *offset, int origin)
        while (1) {
                em = btrfs_get_extent_fiemap(inode, NULL, 0, start, len, 0);
                if (IS_ERR(em)) {
-                       ret = -ENXIO;
+                       ret = PTR_ERR(em);
                        break;
                }