diff options
author | mav <mav@FreeBSD.org> | 2015-10-05 11:02:17 +0000 |
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committer | mav <mav@FreeBSD.org> | 2015-10-05 11:02:17 +0000 |
commit | c5a6a52cc6756f590647fd6f8d45909104f46369 (patch) | |
tree | bfa95d10e9ecc700b9027b8a1e9cff596f85f759 /sys/cam/ctl/ctl_backend_block.c | |
parent | 06a6d5a7e3b17cc5d5954391a0381bd879162cd9 (diff) | |
download | FreeBSD-src-c5a6a52cc6756f590647fd6f8d45909104f46369.zip FreeBSD-src-c5a6a52cc6756f590647fd6f8d45909104f46369.tar.gz |
MFC r288220: Remove stale comments and some excessive empty lines.
Diffstat (limited to 'sys/cam/ctl/ctl_backend_block.c')
-rw-r--r-- | sys/cam/ctl/ctl_backend_block.c | 48 |
1 files changed, 4 insertions, 44 deletions
diff --git a/sys/cam/ctl/ctl_backend_block.c b/sys/cam/ctl/ctl_backend_block.c index 5985993..1839e47 100644 --- a/sys/cam/ctl/ctl_backend_block.c +++ b/sys/cam/ctl/ctl_backend_block.c @@ -466,14 +466,8 @@ ctl_be_block_move_done(union ctl_io *io) * interrupt context, and therefore we cannot block. */ mtx_lock(&be_lun->queue_lock); - /* - * XXX KDM make sure that links is okay to use at this point. - * Otherwise, we either need to add another field to ctl_io_hdr, - * or deal with resource allocation here. - */ STAILQ_INSERT_TAIL(&be_lun->datamove_queue, &io->io_hdr, links); mtx_unlock(&be_lun->queue_lock); - taskqueue_enqueue(be_lun->io_taskqueue, &be_lun->io_task); return (0); @@ -589,15 +583,12 @@ ctl_be_block_flush_file(struct ctl_be_block_lun *be_lun, (void) vn_start_write(be_lun->vn, &mountpoint, V_WAIT); - if (MNT_SHARED_WRITES(mountpoint) - || ((mountpoint == NULL) - && MNT_SHARED_WRITES(be_lun->vn->v_mount))) + if (MNT_SHARED_WRITES(mountpoint) || + ((mountpoint == NULL) && MNT_SHARED_WRITES(be_lun->vn->v_mount))) lock_flags = LK_SHARED; else lock_flags = LK_EXCLUSIVE; - vn_lock(be_lun->vn, lock_flags | LK_RETRY); - error = VOP_FSYNC(be_lun->vn, beio->io_arg ? MNT_NOWAIT : MNT_WAIT, curthread); VOP_UNLOCK(be_lun->vn, 0); @@ -719,13 +710,11 @@ ctl_be_block_dispatch_file(struct ctl_be_block_lun *be_lun, (void)vn_start_write(be_lun->vn, &mountpoint, V_WAIT); - if (MNT_SHARED_WRITES(mountpoint) - || ((mountpoint == NULL) + if (MNT_SHARED_WRITES(mountpoint) || ((mountpoint == NULL) && MNT_SHARED_WRITES(be_lun->vn->v_mount))) lock_flags = LK_SHARED; else lock_flags = LK_EXCLUSIVE; - vn_lock(be_lun->vn, lock_flags | LK_RETRY); /* @@ -1543,14 +1532,8 @@ ctl_be_block_next(struct ctl_be_block_io *beio) io->io_hdr.status |= CTL_STATUS_NONE; mtx_lock(&be_lun->queue_lock); - /* - * XXX KDM make sure that links is okay to use at this point. - * Otherwise, we either need to add another field to ctl_io_hdr, - * or deal with resource allocation here. - */ STAILQ_INSERT_TAIL(&be_lun->input_queue, &io->io_hdr, links); mtx_unlock(&be_lun->queue_lock); - taskqueue_enqueue(be_lun->io_taskqueue, &be_lun->io_task); } @@ -1781,11 +1764,6 @@ ctl_be_block_submit(union ctl_io *io) PRIV(io)->len = 0; mtx_lock(&be_lun->queue_lock); - /* - * XXX KDM make sure that links is okay to use at this point. - * Otherwise, we either need to add another field to ctl_io_hdr, - * or deal with resource allocation here. - */ STAILQ_INSERT_TAIL(&be_lun->input_queue, &io->io_hdr, links); mtx_unlock(&be_lun->queue_lock); taskqueue_enqueue(be_lun->io_taskqueue, &be_lun->io_task); @@ -2336,10 +2314,6 @@ ctl_be_block_create(struct ctl_be_block_softc *softc, struct ctl_lun_req *req) num_threads = 1; } - /* - * XXX This searching loop might be refactored to be combined with - * the loop above, - */ value = ctl_get_opt(&cbe_lun->options, "num_threads"); if (value != NULL) { tmp_num_threads = strtol(value, NULL, 0); @@ -2529,7 +2503,6 @@ ctl_be_block_rm(struct ctl_be_block_softc *softc, struct ctl_lun_req *req) break; } mtx_unlock(&softc->lock); - if (be_lun == NULL) { snprintf(req->error_str, sizeof(req->error_str), "LUN %u is not managed by the block backend", @@ -2597,13 +2570,10 @@ ctl_be_block_rm(struct ctl_be_block_softc *softc, struct ctl_lun_req *req) free(be_lun, M_CTLBLK); req->status = CTL_LUN_OK; - return (0); bailout_error: - req->status = CTL_LUN_ERROR; - return (0); } @@ -2625,7 +2595,6 @@ ctl_be_block_modify(struct ctl_be_block_softc *softc, struct ctl_lun_req *req) break; } mtx_unlock(&softc->lock); - if (be_lun == NULL) { snprintf(req->error_str, sizeof(req->error_str), "LUN %u is not managed by the block backend", @@ -2702,7 +2671,6 @@ ctl_be_block_lun_shutdown(void *be_lun) struct ctl_be_block_softc *softc; lun = (struct ctl_be_block_lun *)be_lun; - softc = lun->softc; mtx_lock(&softc->lock); @@ -2710,7 +2678,6 @@ ctl_be_block_lun_shutdown(void *be_lun) if (lun->flags & CTL_BE_BLOCK_LUN_WAITING) wakeup(lun); mtx_unlock(&softc->lock); - } static void @@ -2759,14 +2726,13 @@ ctl_be_block_config_write(union ctl_io *io) struct ctl_be_lun *cbe_lun; int retval; - retval = 0; - DPRINTF("entered\n"); cbe_lun = (struct ctl_be_lun *)io->io_hdr.ctl_private[ CTL_PRIV_BACKEND_LUN].ptr; be_lun = (struct ctl_be_block_lun *)cbe_lun->be_lun; + retval = 0; switch (io->scsiio.cdb[0]) { case SYNCHRONIZE_CACHE: case SYNCHRONIZE_CACHE_16: @@ -2884,22 +2850,16 @@ ctl_be_block_lun_info(void *be_lun, struct sbuf *sb) int retval; lun = (struct ctl_be_block_lun *)be_lun; - retval = 0; retval = sbuf_printf(sb, "\t<num_threads>"); - if (retval != 0) goto bailout; - retval = sbuf_printf(sb, "%d", lun->num_threads); - if (retval != 0) goto bailout; - retval = sbuf_printf(sb, "</num_threads>\n"); bailout: - return (retval); } |