v5: - Remove useless qemu_aio_count variable from BDRVArchipelagoState struct. - Cleanup xseg signal descriptor, call xseg_quit_local_signal() when closing block device. - Fix ds and volname leaks. - Make xseg request handler thread joinable and wait until exits before destroying condition variables and mutexes. Thanks to Stefan Hajnoczi for pointing this out. - Remove error_propagate() useless call. - Use memcpy instead of strncpy. - Remove check after trying to allocate memory with g_malloc(). - Remove pipe code and complete AIO by introducing QEMU "bottom-half". - Add Archipelago shared memory segment name in options list and QMP. - Remove functions archipelago_aio_read()/_write() and introduce new and simpler function, __archipelago_submit_request(). Refactor archipelago_aio_segmented_rw() function. - Enable Archipelago support in qemu-iotests
v4: - Move Archipelago QMP support from qapi-schema.json file to qapi/block-core.json. Fixe various typographic errors, thanks to Kevin Wolf and Eric Blake. - Use new .create_opts format, define new QemuOptsList structure and refactor qemu_archipelago_create function. v3: - Break down initial patch from one to three. First patch implements Archipelago QEMU block backend with read/write functionality. Second patch implements .bdrv_create() and adds support for creating Archipelago images. Third patch adds QMP support. - Remove global variable g_xseg_init, make xseg_initialize(), xseg_join() and xseg_leave() reentrant and thread-safe. - Introduce new enum BlockdevOptionsArchipelago for the QMP support. v2: - Implement .bdrv_parse_filename() function to convert the shortuct version with a single string to the individual options. - Remove global variables and move relevant fields to ArchipelagoAIOCB struct. - Remove ArchipelagoConf struct and use the relevant fields as individual arguments. - Remove ArchipelagoCB struct and use ArchipelagoAIOCB instead. - Remove ArchipelagoThread struct and move relevant fields to ArchipelagoAIOCB instead. Now an I/O thread is spawned for per-device to handle all async I/O requests. - Remove double data copy, use qemu_iovec_from_buf() and copy data directly to the destination buffer. - Remove archipelago_aio_bh_cb() function, a full request is completed in qemu_archipelago_complete_aio() instead. - Resolve proposed changes from Kevin Wolf and miscellaneous style issues. Chrysostomos Nanakos (3): block: Support Archipelago as a QEMU block backend block/archipelago: Add support for creating images QMP: Add support for Archipelago MAINTAINERS | 6 + block/Makefile.objs | 2 + block/archipelago.c | 1065 ++++++++++++++++++++++++++++++++++++++++++++++++++ configure | 40 ++ qapi/block-core.json | 39 +- 5 files changed, 1149 insertions(+), 3 deletions(-) create mode 100644 block/archipelago.c -- 1.7.10.4
