From: Ramsay Jones <ramsay@ramsay1•demon.co.uk>
To: Stefan Beller <sbeller@google•com>,
peff@peff•net, git@vger•kernel.org, gitster@pobox•com,
mhagger@alum•mit.edu, loic@dachary•org
Subject: Re: [PATCHv2 5/5] refs.c: enable large transactions
Date: Thu, 22 Jan 2015 12:59:11 +0000 [thread overview]
Message-ID: <54C0F41F.2080705@ramsay1.demon.co.uk> (raw)
In-Reply-To: <1421893929-7447-6-git-send-email-sbeller@google.com>
On 22/01/15 02:32, Stefan Beller wrote:
> By closing the file descriptors after creating the lock file we are not
> limiting the size of the transaction by the number of available file
> descriptors.
>
> Signed-off-by: Stefan Beller <sbeller@google•com>
> ---
> refs.c | 17 +++++++++++++----
> t/t1400-update-ref.sh | 4 ++--
> 2 files changed, 15 insertions(+), 6 deletions(-)
>
> diff --git a/refs.c b/refs.c
> index 2013d37..9d01102 100644
> --- a/refs.c
> +++ b/refs.c
> @@ -3055,11 +3055,18 @@ int is_branch(const char *refname)
> static int write_sha1_to_lock_file(struct ref_lock *lock,
> const unsigned char *sha1)
> {
> - if (fdopen_lock_file(lock->lk, "w") < 0
> - || fprintf(lock->lk->fp, "%s\n", sha1_to_hex(sha1)) != 41)
> + if (lock->lk->fd == -1) {
> + if (reopen_lock_file(lock->lk) < 0
> + || fdopen_lock_file(lock->lk, "w") < 0
fdopen_lock_file() returns a 'FILE *', so this causes sparse to bark:
refs.c:3105:56: error: incompatible types for operation (<)
refs.c:3105:56: left side has type struct _IO_FILE [usertype] *
refs.c:3105:56: right side has type int
> + || fprintf(lock->lk->fp, "%s\n", sha1_to_hex(sha1)) != 41
> + || close_lock_file(lock->lk) < 0)
> + return -1;
> + } else {
> + if (fdopen_lock_file(lock->lk, "w") < 0
Similarly, sparse barks:
refs.c:3110:53: error: incompatible types for operation (<)
refs.c:3110:53: left side has type struct _IO_FILE [usertype] *
refs.c:3110:53: right side has type int
> + || fprintf(lock->lk->fp, "%s\n", sha1_to_hex(sha1)) != 41)
> return -1;
> - else
> - return 0;
> + }
> + return 0;
> }
>
> /*
> @@ -3761,6 +3768,8 @@ int ref_transaction_commit(struct ref_transaction *transaction,
> update->refname);
> goto cleanup;
> }
> + /* Do not keep all lock files open at the same time. */
> + close_lock_file(update->lock->lk);
> }
>
> /* Perform updates first so live commits remain referenced */
> diff --git a/t/t1400-update-ref.sh b/t/t1400-update-ref.sh
> index 47d2fe9..c593a1d 100755
> --- a/t/t1400-update-ref.sh
> +++ b/t/t1400-update-ref.sh
> @@ -979,7 +979,7 @@ run_with_limited_open_files () {
>
> test_lazy_prereq ULIMIT_FILE_DESCRIPTORS 'run_with_limited_open_files true'
>
> -test_expect_failure ULIMIT_FILE_DESCRIPTORS 'large transaction creating branches does not burst open file limit' '
> +test_expect_success ULIMIT_FILE_DESCRIPTORS 'large transaction creating branches does not burst open file limit' '
> (
> for i in $(test_seq 33)
> do
> @@ -990,7 +990,7 @@ test_expect_failure ULIMIT_FILE_DESCRIPTORS 'large transaction creating branches
> )
> '
>
> -test_expect_failure ULIMIT_FILE_DESCRIPTORS 'large transaction deleting branches does not burst open file limit' '
> +test_expect_success ULIMIT_FILE_DESCRIPTORS 'large transaction deleting branches does not burst open file limit' '
> (
> for i in $(test_seq 33)
> do
>
ATB,
Ramsay Jones
next prev parent reply other threads:[~2015-01-22 12:59 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-22 2:32 [PATCHv2 0/5] Fix bug in large transactions Stefan Beller
2015-01-22 2:32 ` [PATCHv2 1/5] update-ref: test handling large transactions properly Stefan Beller
2015-01-22 10:54 ` Michael Haggerty
2015-01-22 13:07 ` Jeff King
2015-01-22 2:32 ` [PATCHv2 2/5] t7004: rename ULIMIT test prerequisite to ULIMIT_STACK_SIZE Stefan Beller
2015-01-22 2:32 ` [PATCHv2 3/5] refs.c: remove lock_fd from struct ref_lock Stefan Beller
2015-01-22 2:32 ` [PATCHv2 4/5] refs.c: have a write_sha1_to_lock_file wrapper Stefan Beller
2015-01-22 2:32 ` [PATCHv2 5/5] refs.c: enable large transactions Stefan Beller
2015-01-22 11:24 ` Michael Haggerty
2015-01-22 13:10 ` Jeff King
2015-01-22 16:33 ` Michael Haggerty
2015-01-22 19:24 ` Stefan Beller
2015-01-22 23:11 ` [RFC PATCH 0/5] So you dislike the sequence of system calls? Stefan Beller
2015-01-22 23:11 ` [PATCH 1/5] fixup for "refs.c: enable large transactions" Stefan Beller
2015-01-22 23:11 ` [PATCH 2/5] refs.c: remove unlock_ref from write_ref_sha1 Stefan Beller
2015-01-22 23:11 ` [PATCH 3/5] refs.c: move static functions to close and commit refs Stefan Beller
2015-01-22 23:11 ` [PATCH 4/5] refs.c: remove committing the ref from write_ref_sha1 Stefan Beller
2015-01-22 23:11 ` [PATCH 5/5] refs.c: write values to lock files early for committing Stefan Beller
2015-01-22 12:59 ` Ramsay Jones [this message]
2015-01-22 19:16 ` [PATCHv2 5/5] refs.c: enable large transactions Stefan Beller
2015-01-22 19:51 ` Ramsay Jones
2015-01-22 20:13 ` Ramsay Jones
2015-01-22 20:20 ` Stefan Beller
2015-01-22 20:59 ` Ramsay Jones
2015-01-22 12:05 ` [PATCHv2 0/5] Fix bug in " Michael Haggerty
2015-01-23 20:03 ` [PATCHv3 0/6] " Stefan Beller
2015-01-23 20:03 ` [PATCHv3 1/6] update-ref: test handling large transactions properly Stefan Beller
2015-01-23 20:03 ` [PATCHv3 2/6] t7004: rename ULIMIT test prerequisite to ULIMIT_STACK_SIZE Stefan Beller
2015-01-23 20:03 ` [PATCHv3 3/6] refs.c: remove lock_fd from struct ref_lock Stefan Beller
2015-01-23 20:04 ` [PATCHv3 4/6] refs.c: move static functions to close and commit refs Stefan Beller
2015-01-23 20:04 ` [PATCHv3 5/6] refs.c: remove unlock_ref and commit_ref from write_ref_sha1 Stefan Beller
2015-01-23 23:57 ` Junio C Hamano
2015-01-24 0:22 ` Stefan Beller
2015-01-24 0:39 ` Junio C Hamano
2015-01-24 1:04 ` Stefan Beller
2015-01-24 1:29 ` Junio C Hamano
2015-01-23 20:04 ` [PATCHv3 6/6] refs.c: enable large transactions Stefan Beller
2015-01-24 0:14 ` Junio C Hamano
2015-01-24 0:24 ` Stefan Beller
2015-01-24 0:38 ` Junio C Hamano
2015-01-26 19:30 ` Stefan Beller
2015-01-26 21:10 ` [PATCH] refs.c: clean up write_ref_sha1 returns Stefan Beller
2015-01-27 3:22 ` Junio C Hamano
2015-01-28 21:35 ` Stefan Beller
2015-01-27 3:17 ` [PATCHv3 6/6] refs.c: enable large transactions Junio C Hamano
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