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path: root/drivers/md/dm-vdo/memory-alloc.h
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2026-03-02dm vdo: remove redundant TYPE argument from vdo_allocate macroKen Raeburn
We can infer the type needed from the supplied pointer argument. A couple invocation sites needed fixing to supply the proper type of pointer. Use overflow.h's size_mul, and we can remove the __vdo_do_allocation wrapper which did the same overflow check. Signed-off-by: Ken Raeburn <raeburn@redhat.com> Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
2026-03-02dm vdo: update vdo_allocate_extended to take a field name, no typesKen Raeburn
All of VDO's "extended" allocations use a flexible array field at the end of the allocated structure. We can infer the struct type from the supplied pointer. Replacing the array field type with the field name lets us use struct_size from overflow.h to compute the size instead of the local __vdo_do_allocation version. One allocation of bio structures doesn't conform to this pattern, since the removal of bi_inline_vecs; directly compute the total size for that case. Signed-off-by: Ken Raeburn <raeburn@redhat.com> Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
2024-03-04dm vdo memory-alloc: return VDO_SUCCESS on successMike Snitzer
Signed-off-by: Mike Snitzer <snitzer@kernel.org> Signed-off-by: Matthew Sakai <msakai@redhat.com>
2024-03-04dm vdo memory-alloc: rename vdo_do_allocation to __vdo_do_allocationMike Snitzer
__vdo_do_allocation shouldn't be used outside of memory-alloc.h, so add hidden prefix. Also, tabify the vdo_allocate_extended macro. Signed-off-by: Mike Snitzer <snitzer@kernel.org> Signed-off-by: Matthew Sakai <msakai@redhat.com>
2024-03-04dm vdo memory-alloc: change from uds_ to vdo_ namespaceMike Snitzer
Signed-off-by: Mike Snitzer <snitzer@kernel.org> Signed-off-by: Matthew Sakai <msakai@redhat.com>
2024-02-20dm vdo: add memory allocation utilitiesMatthew Sakai
This patch adds standardized allocation macros and memory tracking tools to track and report any allocated memory that is not freed. This makes it easier to ensure that the vdo target does not leak memory. This patch also adds utilities for controlling whether certain threads are allowed to allocate memory, since memory allocation during certain critical code sections can cause the vdo target to deadlock. Co-developed-by: J. corwin Coburn <corwin@hurlbutnet.net> Signed-off-by: J. corwin Coburn <corwin@hurlbutnet.net> Co-developed-by: Michael Sclafani <dm-devel@lists.linux.dev> Signed-off-by: Michael Sclafani <dm-devel@lists.linux.dev> Co-developed-by: Thomas Jaskiewicz <tom@jaskiewicz.us> Signed-off-by: Thomas Jaskiewicz <tom@jaskiewicz.us> Co-developed-by: Ken Raeburn <raeburn@redhat.com> Signed-off-by: Ken Raeburn <raeburn@redhat.com> Signed-off-by: Matthew Sakai <msakai@redhat.com> Signed-off-by: Mike Snitzer <snitzer@kernel.org>