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From: Michael Haggerty <mhagger@alum.mit.edu>
To: Junio C Hamano <gitster@pobox.com>
Cc: git@vger.kernel.org, Michael Haggerty <mhagger@alum.mit.edu>
Subject: [PATCH v3 17/17] rename_tmp_log(): on SCLD_VANISHED, retry
Date: Sat, 18 Jan 2014 23:49:01 +0100	[thread overview]
Message-ID: <1390085341-2553-18-git-send-email-mhagger@alum.mit.edu> (raw)
In-Reply-To: <1390085341-2553-1-git-send-email-mhagger@alum.mit.edu>

If safe_create_leading_directories() fails because a file along the
path unexpectedly vanished, try again from the beginning.  Try at most
4 times.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
---
 refs.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/refs.c b/refs.c
index 134d5aa..0148bbd 100644
--- a/refs.c
+++ b/refs.c
@@ -2533,7 +2533,14 @@ static int rename_tmp_log(const char *newrefname)
 	int attempts_remaining = 4;
 
  retry:
-	if (safe_create_leading_directories(git_path("logs/%s", newrefname))) {
+	switch (safe_create_leading_directories(git_path("logs/%s", newrefname))) {
+	case SCLD_OK:
+		break; /* success */
+	case SCLD_VANISHED:
+		if (--attempts_remaining > 0)
+			goto retry;
+		/* fall through */
+	default:
 		error("unable to create directory for %s", newrefname);
 		return -1;
 	}
-- 
1.8.5.2

      parent reply	other threads:[~2014-01-18 22:50 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-01-18 22:48 [PATCH v3 00/17] Fix some mkdir/rmdir races Michael Haggerty
2014-01-18 22:48 ` [PATCH v3 01/17] safe_create_leading_directories(): fix format of "if" chaining Michael Haggerty
2014-01-18 22:48 ` [PATCH v3 02/17] safe_create_leading_directories(): reduce scope of local variable Michael Haggerty
2014-01-18 22:48 ` [PATCH v3 03/17] safe_create_leading_directories(): add explicit "slash" pointer Michael Haggerty
2014-01-18 22:48 ` [PATCH v3 04/17] safe_create_leading_directories(): rename local variable Michael Haggerty
2014-01-18 22:48 ` [PATCH v3 05/17] safe_create_leading_directories(): split on first of multiple slashes Michael Haggerty
2014-01-18 22:48 ` [PATCH v3 06/17] safe_create_leading_directories(): always restore slash at end of loop Michael Haggerty
2014-01-18 22:48 ` [PATCH v3 07/17] safe_create_leading_directories(): introduce enum for return values Michael Haggerty
2014-01-18 22:48 ` [PATCH v3 08/17] cmd_init_db(): when creating directories, handle errors conservatively Michael Haggerty
2014-01-18 22:48 ` [PATCH v3 09/17] safe_create_leading_directories(): add new error value SCLD_VANISHED Michael Haggerty
2014-01-18 22:48 ` [PATCH v3 10/17] lock_ref_sha1_basic(): on SCLD_VANISHED, retry Michael Haggerty
2014-01-18 22:48 ` [PATCH v3 11/17] lock_ref_sha1_basic(): if locking fails with ENOENT, retry Michael Haggerty
2014-01-18 22:48 ` [PATCH v3 12/17] remove_dir_recurse(): tighten condition for removing unreadable dir Michael Haggerty
2014-01-18 22:48 ` [PATCH v3 13/17] remove_dir_recurse(): handle disappearing files and directories Michael Haggerty
2014-01-18 22:48 ` [PATCH v3 14/17] rename_ref(): extract function rename_tmp_log() Michael Haggerty
2014-01-18 22:48 ` [PATCH v3 15/17] rename_tmp_log(): handle a possible mkdir/rmdir race Michael Haggerty
2014-01-18 22:49 ` [PATCH v3 16/17] rename_tmp_log(): limit the number of remote_empty_directories() attempts Michael Haggerty
2014-01-18 22:49 ` Michael Haggerty [this message]

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