Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit e5ffae5)

Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit 21f990e)

Conditionally support helgrind annotations if valgrind support is
enabled during the build.

Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit 650ad32)

librbd use of an image hierarchy resulted in lock names being
re-used and incorrectly analyzed.  librbd now uses unique lock
names per instance, but to prevent an unbounded growth of
tracked locks, we now remove lock tracking once a lock is
destructed.

Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit 7c7df2c)

Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit 6e400b9)

Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit b65ae4b)

Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit c1e1445)

This is needed to allow an atomic compare and update operation
from the rebuild object map utility.

Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit 2db758c)

The ObjectCacher complete the read callback while still holding
the cache lock.  This introduces lock ordering issues which are
resolved by queuing the completion to execute in a clean (unlocked)
context.

Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit 0024677)

Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit c474ee4)

The callback routine most likely will attempt to retrieve the result
code, which will result in a recursive lock attempt.

Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit 3ad19ae)

It is only used by clients and it causes a large slowdown
in performance due to the rate at which the lock is constructed/
destructed for each IO request.

Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit 66e7464)

In order to support the invariant that all state machine
callbacks occur without holding locks, transitions that
don't always involve a librados call should queue their
callback.

Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit 218bc2d)

Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit 5f157f2)

Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit c352bcd)

Signed-off-by: Jason Dillaman <dillaman@redhat.com>

Fix for:

CID 1274319: Uninitialized scalar field (UNINIT_CTOR)
 uninit_member: Non-static class member m_object_state is not
 initialized in this constructor nor in any functions that it calls.

Signed-off-by: Danny Al-Gaaf <danny.al-gaaf@bisect.de>
(cherry picked from commit 48f18ea)

Moved all parent overlap computation to within AioRequest so that
callers don't need to independently compute the overlap.  Also
removed the need to pass the snap_id for write operations since
it can only be CEPH_NOSNAP.

Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit 4651597)

Move AbstractWrite's invocation of copyup to the CopyupRequest
class.  The AioRequest write path will now always create a
CopyupRequest, which will now append the actual write ops to the
copyup.

Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit 7be3df6)

Detected during an fsx run where a refresh and CoR were occurring
concurrently.  The refresh held the snap_lock and was waiting on
the object_map_lock, while the CoR held object_map_lock and was
waiting for snap_lock.

Fixes: #11577
Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit 8cbd92b)

It is expected that all IO is flushed and all async ops are cancelled
prior to releasing the exclusive lock.  Therefore, replace handling of
lost exclusive locks in state machines with an assertion.

Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit d6b733d)

Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit 1b57cc1)

librbd requires the ObjectCacher flusher thread to acquire
an additional lock in order to maintain lock ordering
constraints.

Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit a38f9e5)

Flush might result in the cache writing out dirty objects, which
would require that the owner_lock be held.

Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit c9142fe)

Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit 45cb9cb)

Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit 742a85d)

Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit 3d5cef3)

Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit 43e0e3c)

Cache writeback operations will expect the owner lock to be held.

Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit adfa2e0)

It is expensive to collect backtraces every time a lock is
checked in order to provide cycle backtraces.  The backtraces
can be forced on for specific locks or globally via the new
config option "lockdep_force_backtrace".

Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit 7354d25)

When shrinking an image, it's possible that the op flush callback
will be from within the cache callback context.  This would result
in a deadlock when attempting to re-lock the cache lock in order to
invalidate the cache.

Fixes: #11743
Backport: hammer
Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit 726d699)

Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit 8dfcc72)