in write_changed_bitmap(), and page cache forbids that. Here we make the page
cache more relaxed. Original patch by Sanja, simplified by me as limited to
not-locked. See comment of ma_bitmap.c.
With that, maria_stress.yy runs until hitting BUG 39665.
storage/maria/ma_bitmap.c:
A thread which unpins bitmap pages in _ma_bitmap_unpin_all() sometimes
hit an assertion in the page cache (info!=0 in remove_pin()) which states
that you can unpin/unlock only what *you* have pinned/locked.
Fixed by setting the new last parameter of pagecache_unlock_by_link()
to TRUE in _ma_bitmap_unpin_all().
storage/maria/ma_blockrec.c:
new prototype and splitting assertion in three (3rd one fires: BUG 39665)
storage/maria/ma_check.c:
new prototype
storage/maria/ma_key_recover.c:
new prototype
storage/maria/ma_loghandler.c:
new prototype
storage/maria/ma_pagecache.c:
Allow a thread to unpin, with pagecache_unlock_by_link(), a non-locked page pinned by others.
This is a hack for _ma_bitmap_unpin_all() which needs to unpin pages which were
pinned by other threads in write_changed_bitmap().
storage/maria/ma_pagecache.h:
new prototype
storage/maria/ma_preload.c:
new prototype
storage/maria/unittest/ma_pagecache_rwconsist.c:
new prototype
storage/maria/unittest/ma_pagecache_single.c:
new prototype
mysys/wqueue.c:
Problems of partially freed waiting quque fixed.
storage/maria/unittest/ma_pagecache_rwconsist.c:
Explicitly assigned initial value for increasing readability.
Dbug file flush after each line for better debugging.
Fixed code style.
scheme for the same thread locking).
include/my_pthread.h:
Added variable for lock diffirentiation.
include/wqueue.h:
New release call.
mysys/wqueue.c:
New release call in case of read/write lock.
storage/maria/ma_pagecache.c:
Locking for read and write made waitimg for each other.
storage/maria/unittest/Makefile.am:
New test added.
storage/maria/unittest/ma_pagecache_consist.c:
Fixed thread initialization in the test.
storage/maria/unittest/ma_pagecache_rwconsist.c:
New BitKeeper file ``storage/maria/unittest/ma_pagecache_rwconsist.c''
