### Please describe the problem.

When adding files, the error

 fatal: Out of memory? mmap failed: No error

appears 


### What steps will reproduce the problem?

In Windows, I have a directory with 8GB and 333.820 files (of course, in different directory, the big one is probably the Android SDK).

### What version of git-annex are you using? On what operating system?

Windows 8.

 $ git annex version
 git-annex version: 5.20140411-gda795e0
 build flags: Assistant Webapp Webapp-secure Pairing Testsuite S3 WebDAV DNS Feeds Quvi TDFA CryptoHash
 key/value backends: SHA256E SHA1E SHA512E SHA224E SHA384E SKEIN256E SKEIN512E SHA256 SHA1 SHA512 SHA224 SHA384 SKEIN256 SKEIN512 WORM URL
 remote types: git gcrypt S3 bup directory rsync web webdav tahoe glacier hook external
 local repository version: 5
 supported repository version: 5
 upgrade supported from repository versions: 2 3 4


### Please provide any additional information below.


> closing as not a git-annex bug at all, but a git bug. [[done]] --[[Joey]]