Commit 1c8b5b6e authored May 13, 2016 by Liu Bo Committed by David Sterba May 25, 2016

Btrfs: free sys_array eb as soon as possible



While reading sys_chunk_array in superblock, btrfs creates a temporary
extent buffer.  Since we don't use it after finishing reading
 sys_chunk_array, we don't need to keep it in memory.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>

parent c315ef8d

fs/btrfs/volumes.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -6630,13 +6630,13 @@ int btrfs_read_sys_array(struct btrfs_root *root)
		sb_array_offset += len;
		cur_offset += len;
		}
		free_extent_buffer(sb);
		free_extent_buffer_stale(sb);
		return ret;

		out_short_read:
		printk(KERN_ERR "BTRFS: sys_array too short to read %u bytes at offset %u\n",
		len, cur_offset);
		free_extent_buffer(sb);
		free_extent_buffer_stale(sb);
		return -EIO;
		}