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Junio C Hamano b4d065df03 sha1_file: stop opening files with O_NOATIME When we open object files, we try to do so with O_NOATIME. This dates back to `144bde78e9` (Use O_NOATIME when opening the sha1 files., 2005-04-23), which is an optimization to avoid creating a bunch of dirty inodes when we're accessing many objects. But a few things have changed since then: 1. In June 2005, git learned about packfiles, which means we would do a lot fewer atime updates (rather than one per object access, we'd generally get one per packfile). 2. In late 2006, Linux learned about "relatime", which is generally the default on modern installs. So performance around atimes updates is a non-issue there these days. All the world isn't Linux, but as it turns out, Linux is the only platform to implement O_NOATIME in the first place. So it's very unlikely that this code is helping anybody these days. Helped-by: Jeff King <peff@peff.net> [jc: took idea and log message from peff] Signed-off-by: Junio C Hamano <gitster@pobox.com>		2016-11-02 19:34:41 -07:00
Documentation	Merge branch 'jk/alt-odb-cleanup'	2016-10-17 13:25:20 -07:00
block-sha1	…
builtin	sha1_file: rename git_open_noatime() to git_open()	2016-10-25 10:59:13 -07:00
ci	…
compat	Merge branch 'rs/compat-strdup' into maint	2016-09-19 13:51:42 -07:00
contrib	Merge branch 'rs/copy-array' into maint	2016-10-11 14:18:32 -07:00
ewah	…
git-gui	Merge branch 'rs/git-gui-use-modern-git-merge-syntax' into maint	2016-10-11 14:20:37 -07:00
gitk-git	…
gitweb	gitweb: use highlight's shebang detection	2016-09-25 16:39:11 -07:00
mergetools	…
perl	…
po	git-gui: l10n: add Portuguese translation	2016-09-26 07:18:33 -07:00
ppc	…
refs	use QSORT	2016-09-29 15:42:18 -07:00
t	Merge branch 'jk/alt-odb-cleanup'	2016-10-17 13:25:20 -07:00
templates	…
vcs-svn	Merge branch 'mr/vcs-svn-printf-ulong' into maint	2016-09-29 16:49:37 -07:00
xdiff	Merge branch 'mh/diff-indent-heuristic'	2016-10-03 13:30:38 -07:00
.gitattributes	…
.gitignore	…
.mailmap	add David Turner's Two Sigma address	2016-09-26 17:46:44 -07:00
.travis.yml	Merge branch 'ls/travis-homebrew-path-fix' into maint	2016-09-29 16:49:45 -07:00
COPYING	…
GIT-VERSION-GEN	Git 2.10.1	2016-10-03 13:24:18 -07:00
INSTALL	…
LGPL-2.1	…
Makefile	coccicheck: use --all-includes by default	2016-09-29 20:40:18 -07:00
README.md	…
RelNotes	Start preparing for 2.10.2	2016-10-11 14:24:02 -07:00
abspath.c	…
aclocal.m4	…
advice.c	…
advice.h	…
alias.c	…
alloc.c	…
apply.c	introduce CHECKOUT_INIT	2016-09-22 13:42:18 -07:00
apply.h	apply: learn to use a different index file	2016-09-07 12:29:54 -07:00
archive-tar.c	Merge branch 'jk/big-and-future-archive-tar'	2016-08-12 09:47:37 -07:00
archive-zip.c	…
archive.c	i18n: archive: mark errors for translation	2016-08-09 12:44:59 -07:00
archive.h	…
argv-array.c	…
argv-array.h	…
attr.c	…
attr.h	…
base85.c	…
bisect.c	use QSORT	2016-09-29 15:42:18 -07:00
bisect.h	…
blob.c	…
blob.h	…
branch.c	…
branch.h	…
builtin.h	builtin: convert textconv_object to use struct object_id	2016-09-07 12:59:42 -07:00
bulk-checkin.c	…
bulk-checkin.h	…
bundle.c	…
bundle.h	…
cache-tree.c	cache: convert struct cache_entry to use struct object_id	2016-09-07 12:59:42 -07:00
cache-tree.h	…
cache.h	sha1_file: stop opening files with O_NOATIME	2016-11-02 19:34:41 -07:00
check-builtins.sh	…
check-racy.c	…
check_bindir	…
color.c	Merge branch 'jk/squelch-false-warning-from-gcc-o3' into maint	2016-09-19 13:51:41 -07:00
color.h	…
column.c	…
column.h	…
combine-diff.c	…
command-list.txt	…
commit-slab.h	Merge branch 'vs/typofix'	2016-08-12 09:47:37 -07:00
commit.c	Merge branch 'rs/copy-array' into maint	2016-10-11 14:18:32 -07:00
commit.h	Merge branch 'nd/shallow-deepen'	2016-10-10 14:03:50 -07:00
common-main.c	…
config.c	get_short_sha1: make default disambiguation configurable	2016-09-27 10:29:56 -07:00
config.mak.in	…
config.mak.uname	Merge branch 'ew/build-time-pager-tweaks'	2016-08-08 14:48:44 -07:00
configure.ac	Merge branch 'dp/autoconf-curl-ssl'	2016-10-10 14:03:48 -07:00
connect.c	Merge branch 'va/i18n-more'	2016-09-26 16:09:18 -07:00
connect.h	…
connected.c	…
connected.h	…
convert.c	convert: Correct NNO tests and missing `LF will be replaced by CRLF`	2016-08-14 13:45:52 -07:00
convert.h	…
copy.c	…
credential-cache--daemon.c	…
credential-cache.c	…
credential-store.c	…
credential.c	…
credential.h	…
csum-file.c	…
csum-file.h	…
ctype.c	…
daemon.c	Merge branch 'jk/common-main' into maint	2016-09-08 21:35:51 -07:00
date.c	…
decorate.c	…
decorate.h	…
delta.h	…
diff-delta.c	…
diff-lib.c	cache: convert struct cache_entry to use struct object_id	2016-09-07 12:59:42 -07:00
diff-no-index.c	Merge branch 'jk/setup-sequence-update'	2016-09-21 15:15:24 -07:00
diff.c	Merge branch 'rs/qsort'	2016-10-10 14:03:46 -07:00
diff.h	Merge branch 'mh/diff-indent-heuristic'	2016-09-26 16:09:16 -07:00
diffcore-break.c	…
diffcore-delta.c	use QSORT	2016-09-29 15:42:18 -07:00
diffcore-order.c	use QSORT	2016-09-29 15:42:18 -07:00
diffcore-pickaxe.c	Merge branch 'js/regexec-buf' into maint	2016-09-29 16:49:45 -07:00
diffcore-rename.c	use QSORT	2016-09-29 15:42:18 -07:00
diffcore.h	…
dir-iterator.c	…
dir-iterator.h	…
dir.c	use QSORT	2016-09-29 15:42:18 -07:00
dir.h	…
editor.c	…
entry.c	streaming: make stream_blob_to_fd take struct object_id	2016-09-07 12:59:42 -07:00
environment.c	Merge branch 'jk/setup-sequence-update'	2016-09-21 15:15:24 -07:00
exec_cmd.c	…
exec_cmd.h	…
fast-import.c	use QSORT	2016-09-29 15:42:18 -07:00
fetch-pack.c	Merge branch 'nd/shallow-deepen'	2016-10-10 14:03:50 -07:00
fetch-pack.h	…
fmt-merge-msg.h	…
fsck.c	fsck: handle bad trees like other errors	2016-09-27 14:09:10 -07:00
fsck.h	…
generate-cmdlist.sh	…
gettext.c	…
gettext.h	…
git-add--interactive.perl	diff: improve positioning of add/delete blocks in diffs	2016-09-19 10:25:11 -07:00
git-archimport.perl	…
git-bisect.sh	…
git-compat-util.h	Merge branch 'rs/copy-array' into maint	2016-10-11 14:18:32 -07:00
git-cvsexportcommit.perl	…
git-cvsimport.perl	…
git-cvsserver.perl	…
git-difftool--helper.sh	difftool: always honor fatal error exit codes	2016-08-15 15:24:05 -07:00
git-difftool.perl	…
git-filter-branch.sh	…
git-instaweb.sh	…
git-merge-octopus.sh	git-merge-octopus: do not capitalize "octopus"	2016-09-08 12:17:10 -07:00
git-merge-one-file.sh	…
git-merge-resolve.sh	…
git-mergetool--lib.sh	…
git-mergetool.sh	…
git-p4.py	Spelling fixes	2016-08-11 14:35:42 -07:00
git-parse-remote.sh	…
git-quiltimport.sh	…
git-rebase--am.sh	…
git-rebase--interactive.sh	Merge branch 'rt/rebase-i-broken-insn-advise' into maint	2016-09-29 16:49:46 -07:00
git-rebase--merge.sh	…
git-rebase.sh	…
git-relink.perl	…
git-remote-testgit.sh	…
git-request-pull.sh	…
git-send-email.perl	…
git-sh-i18n.sh	…
git-sh-setup.sh	Merge branch 'ew/build-time-pager-tweaks'	2016-08-08 14:48:44 -07:00
git-stash.sh	i18n: stash: mark messages for translation	2016-09-21 10:20:43 -07:00
git-submodule.sh	clone: pass --progress decision to recursive submodules	2016-09-22 11:22:47 -07:00
git-svn.perl	…
git-web--browse.sh	…
git.c	Merge branch 'jk/setup-sequence-update'	2016-09-21 15:15:24 -07:00
git.rc	…
gpg-interface.c	Merge branch 'lt/gpg-show-long-key-in-signature-verification-maint' into lt/gpg-show-long-key-in-signature-verification	2016-08-16 15:04:13 -07:00
gpg-interface.h	…
graph.c	Merge branch 'jk/graph-padding-fix' into maint	2016-10-11 14:19:03 -07:00
graph.h	graph: add support for --line-prefix on all graph-aware output	2016-08-31 18:07:09 -07:00
grep.c	Merge branch 'js/regexec-buf' into maint	2016-09-29 16:49:45 -07:00
grep.h	Merge branch 'jc/grep-commandline-vs-configuration' into maint	2016-08-10 11:55:29 -07:00
hashmap.c	…
hashmap.h	…
help.c	use QSORT	2016-09-29 15:42:18 -07:00
help.h	…
hex.c	Merge branch 'rs/hex2chr' into maint	2016-09-19 13:51:43 -07:00
http-backend.c	Merge branch 'ew/http-backend-batch-headers'	2016-08-12 09:47:38 -07:00
http-fetch.c	…
http-push.c	Merge branch 'jk/common-main' into maint	2016-09-08 21:35:51 -07:00
http-walker.c	…
http.c	Merge branch 'dt/http-empty-auth'	2016-10-17 13:25:18 -07:00
http.h	…
ident.c	Merge branch 'jk/ident-ai-canonname-could-be-null' into maint	2016-10-03 13:22:32 -07:00
imap-send.c	Merge branch 'ak/curl-imap-send-explicit-scheme'	2016-10-10 14:03:48 -07:00
iterator.h	…
khash.h	…
kwset.c	…
kwset.h	…
levenshtein.c	…
levenshtein.h	…
line-log.c	use QSORT	2016-09-29 15:42:18 -07:00
line-log.h	…
line-range.c	…
line-range.h	…
list-objects.c	…
list-objects.h	…
list.h	…
ll-merge.c	…
ll-merge.h	…
lockfile.c	…
lockfile.h	mingw: ensure temporary file handles are not inherited by child processes	2016-08-23 09:09:55 -07:00
log-tree.c	graph: add support for --line-prefix on all graph-aware output	2016-08-31 18:07:09 -07:00
log-tree.h	…
mailinfo.c	Merge branch 'kd/mailinfo-quoted-string'	2016-10-03 13:30:38 -07:00
mailinfo.h	mailinfo: handle in-body header continuations	2016-09-21 10:23:11 -07:00
mailmap.c	…
mailmap.h	…
match-trees.c	…
merge-blobs.c	…
merge-blobs.h	…
merge-recursive.c	Merge branch 'rs/cocci'	2016-09-26 16:09:14 -07:00
merge-recursive.h	…
merge.c	sequencer: lib'ify checkout_fast_forward()	2016-09-09 11:24:52 -07:00
mergesort.c	…
mergesort.h	…
mru.c	…
mru.h	…
name-hash.c	…
notes-cache.c	…
notes-cache.h	…
notes-merge.c	Merge branch 'va/i18n-more'	2016-09-26 16:09:18 -07:00
notes-merge.h	…
notes-utils.c	…
notes-utils.h	…
notes.c	notes: convert init_notes to use struct object_id	2016-09-07 12:59:42 -07:00
notes.h	…
object.c	…
object.h	…
pack-bitmap-write.c	use QSORT	2016-09-29 15:42:18 -07:00
pack-bitmap.c	sha1_file: rename git_open_noatime() to git_open()	2016-10-25 10:59:13 -07:00
pack-bitmap.h	…
pack-check.c	Merge branch 'jk/verify-packfile-gently' into maint	2016-10-11 14:21:36 -07:00
pack-objects.c	…
pack-objects.h	pack-objects: break delta cycles before delta-search phase	2016-08-11 10:44:13 -07:00
pack-revindex.c	use COPY_ARRAY	2016-09-25 16:44:13 -07:00
pack-revindex.h	…
pack-write.c	use QSORT	2016-09-29 15:42:18 -07:00
pack.h	…
pager.c	Merge branch 'jk/setup-sequence-update'	2016-09-21 15:15:24 -07:00
parse-options-cb.c	Merge branch 'mh/diff-indent-heuristic'	2016-09-26 16:09:16 -07:00
parse-options.c	…
parse-options.h	Merge branch 'mh/diff-indent-heuristic'	2016-09-26 16:09:16 -07:00
patch-delta.c	…
patch-ids.c	patch-ids: refuse to compute patch-id for merge commit	2016-09-12 13:45:01 -07:00
patch-ids.h	rebase: avoid computing unnecessary patch IDs	2016-08-11 14:39:16 -07:00
path.c	Merge branch 'jk/diff-submodule-diff-inline'	2016-09-12 15:34:31 -07:00
pathspec.c	Merge branch 'rs/qsort'	2016-10-10 14:03:46 -07:00
pathspec.h	Merge branch 'bw/pathspec-remove-unused-extern-decl' into maint	2016-09-29 16:49:34 -07:00
pkt-line.c	introduce hex2chr() for converting two hexadecimal digits to a character	2016-09-07 10:42:46 -07:00
pkt-line.h	…
preload-index.c	…
pretty.c	Merge branch 'rs/c-auto-resets-attributes'	2016-10-06 14:53:12 -07:00
prio-queue.c	…
prio-queue.h	…
progress.c	…
progress.h	…
prompt.c	…
prompt.h	…
quote.c	…
quote.h	…
reachable.c	…
reachable.h	…
read-cache.c	git_open(): untangle possible NOATIME and CLOEXEC interactions	2016-10-28 06:23:07 -07:00
ref-filter.c	Merge branch 'rs/qsort'	2016-10-10 14:03:46 -07:00
ref-filter.h	…
reflog-walk.c	…
reflog-walk.h	…
refs.c	Merge branch 'nd/shallow-deepen'	2016-10-10 14:03:50 -07:00
refs.h	Merge branch 'nd/shallow-deepen'	2016-10-10 14:03:50 -07:00
remote-curl.c	Merge branch 'nd/shallow-deepen'	2016-10-10 14:03:50 -07:00
remote-testsvn.c	…
remote.c	use strbuf_addstr() for adding constant strings to a strbuf, part 2	2016-09-15 12:23:38 -07:00
remote.h	Merge branch 'jk/push-force-with-lease-creation' into maint	2016-09-08 21:35:53 -07:00
replace_object.c	…
rerere.c	cache: convert struct cache_entry to use struct object_id	2016-09-07 12:59:42 -07:00
rerere.h	…
resolve-undo.c	cache: convert struct cache_entry to use struct object_id	2016-09-07 12:59:42 -07:00
resolve-undo.h	…
revision.c	Merge branch 'vn/revision-shorthand-for-side-branch-log'	2016-10-06 14:53:10 -07:00
revision.h	…
run-command.c	Merge branch 'ab/hooks'	2016-08-19 15:34:16 -07:00
run-command.h	…
send-pack.c	Merge branch 'rs/use-strbuf-addstr' into maint	2016-08-10 11:55:34 -07:00
send-pack.h	…
sequencer.c	sequencer: ensure to release the lock when we could not read the index	2016-09-09 11:24:52 -07:00
sequencer.h	…
server-info.c	use QSORT	2016-09-29 15:42:18 -07:00
setup.c	i18n: setup: mark error messages for translation	2016-08-09 12:44:59 -07:00
sh-i18n--envsubst.c	remove unnecessary check before QSORT	2016-09-29 15:42:18 -07:00
sha1-array.c	Merge branch 'rs/qsort'	2016-10-10 14:03:46 -07:00
sha1-array.h	sha1_array: let callbacks interrupt iteration	2016-09-26 11:46:41 -07:00
sha1-lookup.c	…
sha1-lookup.h	…
sha1_file.c	sha1_file: stop opening files with O_NOATIME	2016-11-02 19:34:41 -07:00
sha1_name.c	Merge branch 'jk/alt-odb-cleanup'	2016-10-17 13:25:20 -07:00
shallow.c	Merge branch 'nd/shallow-deepen'	2016-10-10 14:03:50 -07:00
shell.c	…
shortlog.h	…
show-index.c	…
sideband.c	Merge branch 'lf/recv-sideband-cleanup' into maint	2016-08-08 14:21:41 -07:00
sideband.h	…
sigchain.c	…
sigchain.h	…
split-index.c	use COPY_ARRAY	2016-09-25 16:44:13 -07:00
split-index.h	…
strbuf.c	link_alt_odb_entry: handle normalize_path errors	2016-10-10 13:52:36 -07:00
strbuf.h	link_alt_odb_entry: handle normalize_path errors	2016-10-10 13:52:36 -07:00
streaming.c	Merge branch 'jk/pack-objects-optim-mru'	2016-10-10 14:03:47 -07:00
streaming.h	streaming: make stream_blob_to_fd take struct object_id	2016-09-07 12:59:42 -07:00
string-list.c	use QSORT	2016-09-29 15:42:18 -07:00
string-list.h	…
submodule-config.c	Merge branch 'sb/submodule-update-dot-branch'	2016-08-10 12:33:20 -07:00
submodule-config.h	…
submodule.c	Merge branch 'jk/alt-odb-cleanup'	2016-10-17 13:25:20 -07:00
submodule.h	diff: teach diff to display submodule difference with an inline diff	2016-08-31 18:07:10 -07:00
symlinks.c	…
tag.c	…
tag.h	…
tar.h	…
tempfile.c	mingw: ensure temporary file handles are not inherited by child processes	2016-08-23 09:09:55 -07:00
tempfile.h	mingw: ensure temporary file handles are not inherited by child processes	2016-08-23 09:09:55 -07:00
thread-utils.c	…
thread-utils.h	…
trace.c	trace: do not fall back to stderr	2016-08-05 09:28:17 -07:00
trace.h	…
trailer.c	…
trailer.h	…
transport-helper.c	Merge branch 'nd/shallow-deepen'	2016-10-10 14:03:50 -07:00
transport.c	Merge branch 'jk/alt-odb-cleanup'	2016-10-17 13:25:20 -07:00
transport.h	Merge branch 'nd/shallow-deepen'	2016-10-10 14:03:50 -07:00
tree-diff.c	…
tree-walk.c	fsck: handle bad trees like other errors	2016-09-27 14:09:10 -07:00
tree-walk.h	fsck: handle bad trees like other errors	2016-09-27 14:09:10 -07:00
tree.c	use QSORT	2016-09-29 15:42:18 -07:00
tree.h	…
unicode_width.h	…
unimplemented.sh	…
unix-socket.c	…
unix-socket.h	…
unpack-trees.c	Merge branch 'rs/unpack-trees-reduce-file-scope-global' into maint	2016-09-29 16:49:36 -07:00
unpack-trees.h	…
update_unicode.sh	…
upload-pack.c	Merge branch 'nd/shallow-deepen'	2016-10-10 14:03:50 -07:00
url.c	introduce hex2chr() for converting two hexadecimal digits to a character	2016-09-07 10:42:46 -07:00
url.h	…
urlmatch.c	…
urlmatch.h	…
usage.c	Merge branch 'cc/apply-am'	2016-09-19 13:47:18 -07:00
userdiff.c	…
userdiff.h	…
utf8.c	…
utf8.h	…
varint.c	…
varint.h	…
version.c	…
version.h	…
versioncmp.c	…
walker.c	…
walker.h	…
wildmatch.c	…
wildmatch.h	…
worktree.c	…
worktree.h	…
wrap-for-bin.sh	…
wrapper.c	…
write_or_die.c	write_or_die: drop write_or_whine_pipe()	2016-08-05 09:28:17 -07:00
ws.c	…
wt-status.c	Merge branch 'rs/cocci'	2016-10-06 14:53:12 -07:00
wt-status.h	status: print branch info with --porcelain=v2 --branch	2016-08-11 11:15:40 -07:00
xdiff-interface.c	Merge branch 'js/regexec-buf' into maint	2016-09-29 16:49:45 -07:00
xdiff-interface.h	Convert read_mmblob to take struct object_id.	2016-09-07 12:59:42 -07:00
zlib.c	…

README.md

Git - fast, scalable, distributed revision control system

Git is a fast, scalable, distributed revision control system with an unusually rich command set that provides both high-level operations and full access to internals.

Git is an Open Source project covered by the GNU General Public License version 2 (some parts of it are under different licenses, compatible with the GPLv2). It was originally written by Linus Torvalds with help of a group of hackers around the net.

Please read the file INSTALL for installation instructions.

Many Git online resources are accessible from http://git-scm.com/ including full documentation and Git related tools.

See Documentation/gittutorial.txt to get started, then see Documentation/giteveryday.txt for a useful minimum set of commands, and Documentation/git-.txt for documentation of each command. If git has been correctly installed, then the tutorial can also be read with man gittutorial or git help tutorial, and the documentation of each command with man git-<commandname> or git help <commandname>.

CVS users may also want to read Documentation/gitcvs-migration.txt (man gitcvs-migration or git help cvs-migration if git is installed).

The user discussion and development of Git take place on the Git mailing list -- everyone is welcome to post bug reports, feature requests, comments and patches to git@vger.kernel.org (read Documentation/SubmittingPatches for instructions on patch submission). To subscribe to the list, send an email with just "subscribe git" in the body to majordomo@vger.kernel.org. The mailing list archives are available at http://news.gmane.org/gmane.comp.version-control.git/, http://marc.info/?l=git and other archival sites.

The maintainer frequently sends the "What's cooking" reports that list the current status of various development topics to the mailing list. The discussion following them give a good reference for project status, development direction and remaining tasks.

The name "git" was given by Linus Torvalds when he wrote the very first version. He described the tool as "the stupid content tracker" and the name as (depending on your mood):

random three-letter combination that is pronounceable, and not actually used by any common UNIX command. The fact that it is a mispronunciation of "get" may or may not be relevant.
stupid. contemptible and despicable. simple. Take your pick from the dictionary of slang.
"global information tracker": you're in a good mood, and it actually works for you. Angels sing, and a light suddenly fills the room.
"goddamn idiotic truckload of sh*t": when it breaks