Hi, This series: - Fixes some bugs/minor inconveniences, - Removes libfuse from the request processing path, - Make the FUSE export use coroutines for request handling, - Introduces multi-threading into the FUSE export.
More detail on the v1 cover letter: https://lists.nongnu.org/archive/html/qemu-block/2025-03/msg00359.html v2 cover letter: https://lists.nongnu.org/archive/html/qemu-block/2025-06/msg00040.html Changes from v2: - Patch 12: Moved qemu_fcntl_addfl() into the #ifndef _WIN32 section where other fcntl() wrappers reside - Patch 13: Fixed comment to say `export` instead of `exp`; kept Stefan’s R-b - Patch 15: Same as patch 13 - Patch 18: In macro, use correct parameter `queue` instead of the non-existing `q` git-backport-diff from v2: Key: [----] : patches are identical [####] : number of functional differences between upstream/downstream patch [down] : patch is downstream-only The flags [FC] indicate (F)unctional and (C)ontextual differences, respectively 001/21:[----] [--] 'fuse: Copy write buffer content before polling' 002/21:[----] [--] 'fuse: Ensure init clean-up even with error_fatal' 003/21:[----] [--] 'fuse: Remove superfluous empty line' 004/21:[----] [--] 'fuse: Explicitly set inode ID to 1' 005/21:[----] [--] 'fuse: Change setup_... to mount_fuse_export()' 006/21:[----] [--] 'fuse: Fix mount options' 007/21:[----] [--] 'fuse: Set direct_io and parallel_direct_writes' 008/21:[----] [--] 'fuse: Introduce fuse_{at,de}tach_handlers()' 009/21:[----] [--] 'fuse: Introduce fuse_{inc,dec}_in_flight()' 010/21:[----] [--] 'fuse: Add halted flag' 011/21:[----] [--] 'fuse: Rename length to blk_len in fuse_write()' 012/21:[----] [-C] 'block: Move qemu_fcntl_addfl() into osdep.c' 013/21:[0008] [FC] 'fuse: Manually process requests (without libfuse)' 014/21:[----] [--] 'fuse: Reduce max read size' 015/21:[0008] [FC] 'fuse: Process requests in coroutines' 016/21:[----] [--] 'block/export: Add multi-threading interface' 017/21:[----] [--] 'iotests/307: Test multi-thread export interface' 018/21:[0016] [FC] 'fuse: Implement multi-threading' 019/21:[----] [--] 'qapi/block-export: Document FUSE's multi-threading' 020/21:[----] [--] 'iotests/308: Add multi-threading sanity test' 021/21:[----] [--] 'fuse: Increase MAX_WRITE_SIZE with a second buffer' Hanna Czenczek (21): fuse: Copy write buffer content before polling fuse: Ensure init clean-up even with error_fatal fuse: Remove superfluous empty line fuse: Explicitly set inode ID to 1 fuse: Change setup_... to mount_fuse_export() fuse: Fix mount options fuse: Set direct_io and parallel_direct_writes fuse: Introduce fuse_{at,de}tach_handlers() fuse: Introduce fuse_{inc,dec}_in_flight() fuse: Add halted flag fuse: Rename length to blk_len in fuse_write() block: Move qemu_fcntl_addfl() into osdep.c fuse: Manually process requests (without libfuse) fuse: Reduce max read size fuse: Process requests in coroutines block/export: Add multi-threading interface iotests/307: Test multi-thread export interface fuse: Implement multi-threading qapi/block-export: Document FUSE's multi-threading iotests/308: Add multi-threading sanity test fuse: Increase MAX_WRITE_SIZE with a second buffer qapi/block-export.json | 39 +- include/block/export.h | 12 +- include/qemu/osdep.h | 1 + block/export/export.c | 48 +- block/export/fuse.c | 1181 ++++++++++++++++++++------ block/export/vduse-blk.c | 7 + block/export/vhost-user-blk-server.c | 8 + block/file-posix.c | 17 +- nbd/server.c | 6 + util/osdep.c | 18 + tests/qemu-iotests/307 | 47 + tests/qemu-iotests/307.out | 18 + tests/qemu-iotests/308 | 55 +- tests/qemu-iotests/308.out | 61 +- 14 files changed, 1213 insertions(+), 305 deletions(-) -- 2.49.0
