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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>
This commit is contained in:
Liu Bo 2016-05-13 17:06:59 -07:00 committed by David Sterba
parent c315ef8d9d
commit 1c8b5b6e8b
1 changed files with 2 additions and 2 deletions
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4
fs/btrfs/volumes.c
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@ -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;
}