[PATCH 0/6] Various libpager fixes

[Sergey Bugaev]

While hacking further on tarfs mmap support, I've come across some
issues in libpager and I thought I'd fix them. The issues range from
plain bugs (such as pager_offer_page () always silently failing) to
minor things that could be improved.

The patches are fairly independent, but they touch a lot of the same
code, so they may be hard to apply separately. I can regenerate diffs
for individual patches if needed.

Most of the patches only modify internal workings of libpager; the
3rd patch slightly modifies the public API by adding return codes
to various functions that have previously returned void. This should
not break any callers though.

I have tested that the modified libpager builds without warnings, and
tmpfs seems to work as expected with libpager.so replaced.

Sergey Bugaev (6):
  libpager: Fix mixing up success and error
  libpager: Do not flush in-core pages on offer
  libpager: Add error handling to various functions
  libpager: Store pagemapsize as vm_size_t
  libpager: Fix overallocating pagemap
  libpager: Use libc heap for pagemap

 doc/hurd.texi               | 16 +++++------
 libpager/data-unlock.c      | 13 +++++----
 libpager/lock-object.c      | 32 ++++++++++++++-------
 libpager/object-terminate.c |  5 ++--
 libpager/offer-page.c       | 28 +++++++++----------
 libpager/pagemap.c          | 27 +++++++-----------
 libpager/pager-attr.c       | 56 +++++++++++++++++++++----------------
 libpager/pager-flush.c      | 21 ++++++++------
 libpager/pager-return.c     | 21 ++++++++------
 libpager/pager-sync.c       | 19 +++++++------
 libpager/pager.h            | 20 ++++++-------
 libpager/priv.h             |  6 ++--
 12 files changed, 143 insertions(+), 121 deletions(-)

-- 
2.31.1