Merge branch 'sp/fast-import-large-blob'

* sp/fast-import-large-blob:
  fast-import: Stream very large blobs directly to pack

Documentation/config.txt

@@ -417,6 +417,20 @@ You probably do not need to adjust this value.
 +
 Common unit suffixes of 'k', 'm', or 'g' are supported.
 
+core.bigFileThreshold::
+	Files larger than this size are stored deflated, without
+	attempting delta compression.  Storing large files without
+	delta compression avoids excessive memory usage, at the
+	slight expense of increased disk usage.
++
+Default is 512 MiB on all platforms.  This should be reasonable
+for most projects as source code and other text files can still
+be delta compressed, but larger binary media files won't be.
++
+Common unit suffixes of 'k', 'm', or 'g' are supported.
++
+Currently only linkgit:git-fast-import[1] honors this setting.
+
 core.excludesfile::
 	In addition to '.gitignore' (per-directory) and
 	'.git/info/exclude', git looks into this file for patterns

Documentation/git-fast-import.txt

@@ -50,6 +50,12 @@ OPTIONS
 	importers may wish to lower this, such as to ensure the
 	resulting packfiles fit on CDs.
 
+--big-file-threshold=<n>::
+	Maximum size of a blob that fast-import will attempt to
+	create a delta for, expressed in bytes.  The default is 512m
+	(512 MiB).  Some importers may wish to lower this on systems
+	with constrained memory.
+
 --depth=<n>::
 	Maximum delta depth, for blob and tree deltification.
 	Default is 10.