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| author |  Michael Haggerty <mhagger@alum.mit.edu> | 2015-05-11 12:35:26 +0200 |
|---|---|---|
| committer |  Junio C Hamano <gitster@pobox.com> | 2015-05-14 14:51:51 -0700 |
| commit | f4ab4f3ab117cf375ae7bb8908c7b5ad687342b1 (patch) | |
| tree | b24e6af2887c9c5f8b2904bf46e47cdb7d7b4cdc /Documentation | |
| parent | lockfile: allow file locking to be retried with a timeout (diff) | |
| download | tgif-f4ab4f3ab117cf375ae7bb8908c7b5ad687342b1.tar.xz | |
lock_packed_refs(): allow retries when acquiring the packed-refs lock
Currently, there is only one attempt to acquire any lockfile, and if
the lock is held by another process, the locking attempt fails
immediately.
This is not such a limitation for loose reference files. First, they
don't take long to rewrite. Second, most reference updates have a
known "old" value, so if another process is updating a reference at
the same moment that we are trying to lock it, then probably the
expected "old" value will not longer be valid, and the update will
fail anyway.
But these arguments do not hold for packed-refs:
* The packed-refs file can be large and take significant time to
rewrite.
* Many references are stored in a single packed-refs file, so it could
be that the other process was changing a different reference than
the one that we are interested in.
Therefore, it is much more likely for there to be spurious lock
conflicts in connection to the packed-refs file, resulting in
unnecessary command failures.
So, if the first attempt to lock the packed-refs file fails, continue
retrying for a configurable length of time before giving up. The
default timeout is 1 second.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/config.txt | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/config.txt b/Documentation/config.txt index 948b8b0e5c..863057b25f 100644 --- a/Documentation/config.txt +++ b/Documentation/config.txt @@ -624,6 +624,12 @@ core.commentChar:: If set to "auto", `git-commit` would select a character that is not the beginning character of any line in existing commit messages. +core.packedRefsTimeout:: + The length of time, in milliseconds, to retry when trying to + lock the `packed-refs` file. Value 0 means not to retry at + all; -1 means to try indefinitely. Default is 1000 (i.e., + retry for 1 second). + sequence.editor:: Text editor used by `git rebase -i` for editing the rebase instruction file. The value is meant to be interpreted by the shell when it is used. |