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Peter Geoghegan 9945ad6e90 Justify nbtree page split locking in code comment. 
Delaying unlocking the right child page until after the point that the
left child's parent page has been refound is no longer truly necessary.
Commit 40dae7ec made nbtree tolerant of interrupted page splits.  VACUUM
was taught to avoid deleting a page that happens to be the right half of
an incomplete split.  As long as page splits don't unlock the left child
page until the end of the second/final phase, it should be safe to
unlock the right child page earlier (at the end of the first phase).

It probably isn't actually useful to release the right child's lock
earlier like this (it probably won't improve performance).  Even still,
pointing out that it ought to be safe to do so should make it easier to
understand the overall design.
2020-03-27 16:44:52 -07:00
..
backend Justify nbtree page split locking in code comment. 2020-03-27 16:44:52 -07:00
bin pg_dump new test: Change order of arguments 2020-03-25 15:15:32 -03:00
common Add support for other normal forms to Unicode normalization API 2020-03-24 10:02:46 +01:00
fe_utils Fix bug in pg_basebackup -F plain -R. 2020-02-12 09:08:22 +09:00
include Allow walreceiver configuration to change on reload 2020-03-27 19:51:37 -03:00
interfaces Fix issues around .pgpass file. 2020-03-05 13:00:38 +09:00
makefiles Remove libpq.rc, use win32ver.rc for libpq 2020-01-15 15:06:12 +01:00
pl Rearrange validity checks for plpgsql "simple" expressions. 2020-03-27 14:47:34 -04:00
port Fix our getopt_long's behavior for a command line argument of just "-". 2020-03-23 11:58:00 -04:00
template Fix compiler warning for ppoll() on Cygwin 2019-12-22 23:20:00 +01:00
test Allow walreceiver configuration to change on reload 2020-03-27 19:51:37 -03:00
timezone Require stdint.h 2020-02-21 09:20:32 +01:00
tools Provide a TLS init hook 2020-03-25 17:13:17 -04:00
tutorial Update copyrights for 2020 2020-01-01 12:21:45 -05:00
.gitignore
DEVELOPERS
Makefile Fix partial-build problems introduced by having more generated headers. 2018-04-09 16:42:10 -04:00
Makefile.global.in Add PostgreSQL home page to --help output 2020-02-28 13:12:21 +01:00
Makefile.shlib Add PostgreSQL home page to --help output 2020-02-28 13:12:21 +01:00
nls-global.mk NLS: Fix backend gettext triggers 2019-09-23 09:04:20 +02:00