[PATCH] fast-import: Document the core.bigFileThreshold configuration setting

["Shawn O. Pearce" <spearce@spearce.org>]

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
---
 Junio C Hamano <gitster@pobox.com> wrote:
 > You may want to add the new option to the output from "cmd -h" and
 > probably description of the configuration in the doc before any of this
 > gets official.

 Doc patch.  :-)

 Feel free to squash, or to apply as its own change, I don't care
 either way.

 Documentation/config.txt |   14 ++++++++++++++
 fast-import.c            |    2 +-
 2 files changed, 15 insertions(+), 1 deletions(-)

diff --git a/Documentation/config.txt b/Documentation/config.txt
index f7728ec..b16a20b 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -409,6 +409,20 @@ 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
diff --git a/fast-import.c b/fast-import.c
index 8055f73..1bcf3bb 100644
--- a/fast-import.c
+++ b/fast-import.c
@@ -2613,7 +2613,7 @@ static int git_pack_config(const char *k, const char *v, void *cb)
 }
 
 static const char fast_import_usage[] =
-"git fast-import [--date-format=f] [--max-pack-size=n] [--depth=n] [--active-branches=n] [--export-marks=marks.file]";
+"git fast-import [--date-format=f] [--max-pack-size=n] [--big-file-threshold=n] [--depth=n] [--active-branches=n] [--export-marks=marks.file]";
 
 int main(int argc, const char **argv)
 {
-- 
1.7.0.rc0.170.g7207c

-- 
Shawn.