Merge branch 'ym/fix-opportunistic-index-update-race' into maint
commit1881d2b88c4b889dcb95782ad4bc5395808438e9
authorJunio C Hamano <gitster@pobox.com>
Wed, 25 Jun 2014 18:49:48 +0000 (25 11:49 -0700)
committerJunio C Hamano <gitster@pobox.com>
Wed, 25 Jun 2014 18:49:48 +0000 (25 11:49 -0700)
treecab7b82ccfc98e89b355c3dc209b7ec6656e1b93
parent85785df6d6db50ff37d0ff1878c16ad69a063f6a
parent426ddeead6112955dfb50ccf9bb4af05d1ca9082
Merge branch 'ym/fix-opportunistic-index-update-race' into maint

"git status", even though it is a read-only operation, tries to
update the index with refreshed lstat(2) info to optimize future
accesses to the working tree opportunistically, but this could
race with a "read-write" operation that modify the index while it
is running.  Detect such a race and avoid overwriting the index.

* ym/fix-opportunistic-index-update-race:
  read-cache.c: verify index file before we opportunistically update it
  wrapper.c: add xpread() similar to xread()
builtin/index-pack.c
cache.h
git-compat-util.h
read-cache.c