git/read-cache.c, branch v2.0.2

Merge branch 'ym/fix-opportunistic-index-update-race' into maint

2014-06-25T18:49:48Z

"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()

read-cache.c: verify index file before we opportunistically update it

2014-04-10T19:27:58Z

Before we proceed to opportunistically update the index (often done by an otherwise read-only operation like "git status" and "git diff" that internally refreshes the index), we must verify that the current index file is the same as the one that we read earlier before we took the lock on it, in order to avoid a possible race. In the example below git-status does "opportunistic update" and git-rebase updates the index, but the race can happen in general. 1. process A calls git-rebase (or does anything that uses the index) 2. process A applies 1st commit 3. process B calls git-status (or does anything that updates the index) 4. process B reads index 5. process A applies 2nd commit 6. process B takes the lock, then overwrites process A's changes. 7. process A applies 3rd commit As an end result the 3rd commit will have a revert of the 2nd commit. When process B takes the lock, it needs to make sure that the index hasn't changed since step 4. Signed-off-by: Yiannis Marangos Signed-off-by: Junio C Hamano

Merge branch 'dd/use-alloc-grow'

2014-03-18T20:50:21Z

Replace open-coded reallocation with ALLOC_GROW() macro. * dd/use-alloc-grow: sha1_file.c: use ALLOC_GROW() in pretend_sha1_file() read-cache.c: use ALLOC_GROW() in add_index_entry() builtin/mktree.c: use ALLOC_GROW() in append_to_tree() attr.c: use ALLOC_GROW() in handle_attr_line() dir.c: use ALLOC_GROW() in create_simplify() reflog-walk.c: use ALLOC_GROW() replace_object.c: use ALLOC_GROW() in register_replace_object() patch-ids.c: use ALLOC_GROW() in add_commit() diffcore-rename.c: use ALLOC_GROW() diff.c: use ALLOC_GROW() commit.c: use ALLOC_GROW() in register_commit_graft() cache-tree.c: use ALLOC_GROW() in find_subtree() bundle.c: use ALLOC_GROW() in add_to_ref_list() builtin/pack-objects.c: use ALLOC_GROW() in check_pbase_path()

Merge branch 'tg/index-v4-format'

2014-03-14T21:26:50Z

* tg/index-v4-format: read-cache: add index.version config variable test-lib: allow setting the index format version introduce GIT_INDEX_VERSION environment variable

read-cache.c: use ALLOC_GROW() in add_index_entry()

2014-03-03T22:54:54Z

Signed-off-by: Dmitry S. Dolzhenko Signed-off-by: Junio C Hamano

Merge branch 'jk/pack-bitmap'

2014-02-27T22:01:48Z

Borrow the bitmap index into packfiles from JGit to speed up enumeration of objects involved in a commit range without having to fully traverse the history. * jk/pack-bitmap: (26 commits) ewah: unconditionally ntohll ewah data ewah: support platforms that require aligned reads read-cache: use get_be32 instead of hand-rolled ntoh_l block-sha1: factor out get_be and put_be wrappers do not discard revindex when re-preparing packfiles pack-bitmap: implement optional name_hash cache t/perf: add tests for pack bitmaps t: add basic bitmap functionality tests count-objects: recognize .bitmap in garbage-checking repack: consider bitmaps when performing repacks repack: handle optional files created by pack-objects repack: turn exts array into array-of-struct repack: stop using magic number for ARRAY_SIZE(exts) pack-objects: implement bitmap writing rev-list: add bitmap mode to speed up object lists pack-objects: use bitmaps when packing objects pack-objects: split add_object_entry pack-bitmap: add support for bitmap indexes documentation: add documentation for the bitmap format ewah: compressed bitmap implementation ...

Merge branch 'nd/reset-intent-to-add'

2014-02-27T22:01:40Z

* nd/reset-intent-to-add: reset: support "--mixed --intent-to-add" mode

Merge branch 'nd/submodule-pathspec-ending-with-slash'

2014-02-27T22:01:15Z

Allow "git cmd path/", when the 'path' is where a submodule is bound to the top-level working tree, to match 'path', despite the extra and unnecessary trailing slash. * nd/submodule-pathspec-ending-with-slash: clean: use cache_name_is_other() clean: replace match_pathspec() with dir_path_match() pathspec: pass directory indicator to match_pathspec_item() match_pathspec: match pathspec "foo/" against directory "foo" dir.c: prepare match_pathspec_item for taking more flags pathspec: rename match_pathspec_depth() to match_pathspec() pathspec: convert some match_pathspec_depth() to dir_path_match() pathspec: convert some match_pathspec_depth() to ce_path_match()

Merge branch 'bk/refresh-missing-ok-in-merge-recursive'

2014-02-27T22:01:14Z

Allow "merge-recursive" to work in an empty (temporary) working tree again when there are renames involved, correcting an old regression in 1.7.7 era. * bk/refresh-missing-ok-in-merge-recursive: merge-recursive.c: tolerate missing files while refreshing index read-cache.c: extend make_cache_entry refresh flag with options read-cache.c: refactor --ignore-missing implementation t3030-merge-recursive: test known breakage with empty work tree

pathspec: convert some match_pathspec_depth() to ce_path_match()

2014-02-24T22:36:52Z

This helps reduce the number of match_pathspec_depth() call sites and show how match_pathspec_depth() is used. Signed-off-by: Nguyễn Thái Ngọc Duy Signed-off-by: Junio C Hamano