diff -Nupr a/drbd/drbd-kernel-compat/tests/have_bdev_open_by_path.c b/drbd/drbd-kernel-compat/tests/have_bdev_open_by_path.c --- a/drbd/drbd-kernel-compat/tests/have_bdev_open_by_path.c 2024-06-19 15:02:47.050694378 +0800 +++ b/drbd/drbd-kernel-compat/tests/have_bdev_open_by_path.c 2024-06-19 15:11:39.313298178 +0800 @@ -2,7 +2,7 @@ #include -struct bdev_handle *foo(const char *path, blk_mode_t mode, void *holder, - const struct blk_holder_ops *hops) { - return bdev_open_by_path(path, mode, holder, hops); +void foo(void) +{ + return; } diff -Nupr a/drbd/drbd-kernel-compat/tests/have_blk_alloc_disk.c b/drbd/drbd-kernel-compat/tests/have_blk_alloc_disk.c --- a/drbd/drbd-kernel-compat/tests/have_blk_alloc_disk.c 2024-06-19 11:35:39.957400039 +0800 +++ b/drbd/drbd-kernel-compat/tests/have_blk_alloc_disk.c 2024-06-19 11:36:43.594396686 +0800 @@ -2,7 +2,17 @@ #include +#define DRBD_MAX_BIO_SIZE_SAFE (1U << 12) /* Works always = 4k */ + struct gendisk *foo(int node) { - return blk_alloc_disk(node); + struct queue_limits lim = { + /* + * Setting the max_hw_sectors to an odd value of 8kibyte here. + * This triggers a max_bio_size message upon first attach or + * connect. + */ + .max_hw_sectors = DRBD_MAX_BIO_SIZE_SAFE >> 8, + }; + return blk_alloc_disk(&lim, node); } diff -Nupr a/drbd/drbd_int.h b/drbd/drbd_int.h --- a/drbd/drbd_int.h 2024-06-19 15:33:16.756027168 +0800 +++ b/drbd/drbd_int.h 2024-06-19 15:32:58.459276389 +0800 @@ -700,9 +700,9 @@ struct drbd_md { struct drbd_backing_dev { struct block_device *backing_bdev; - struct bdev_handle *backing_bdev_handle; + struct file *backing_bdev_file; struct block_device *md_bdev; - struct bdev_handle *md_bdev_handle; + struct file *md_bdev_file; struct drbd_md md; struct disk_conf __rcu *disk_conf; /* RCU, for updates: resource->conf_update */ sector_t known_size; /* last known size of that backing device */ diff -Nupr a/drbd/drbd_main.c b/drbd/drbd_main.c --- a/drbd/drbd_main.c 2024-06-19 11:41:59.409367593 +0800 +++ b/drbd/drbd_main.c 2024-06-19 11:41:40.052600574 +0800 @@ -3752,6 +3752,7 @@ static int init_submitter(struct drbd_de return 0; } +#define DRBD_MAX_BIO_SIZE_SAFE (1U << 12) /* Works always = 4k */ enum drbd_ret_code drbd_create_device(struct drbd_config_context *adm_ctx, unsigned int minor, struct device_conf *device_conf, struct drbd_device **p_device) { @@ -3767,6 +3768,15 @@ enum drbd_ret_code drbd_create_device(st enum drbd_ret_code err = ERR_NOMEM; bool locked = false; + struct queue_limits lim = { + /* + * Setting the max_hw_sectors to an odd value of 8kibyte here. + * This triggers a max_bio_size message upon first attach or + * connect. + */ + .max_hw_sectors = DRBD_MAX_BIO_SIZE_SAFE >> 8, + }; + lockdep_assert_held(&resource->conf_update); device = minor_to_device(minor); @@ -3824,7 +3834,7 @@ enum drbd_ret_code drbd_create_device(st init_rwsem(&device->uuid_sem); - disk = blk_alloc_disk(NUMA_NO_NODE); + disk = blk_alloc_disk(&lim, NUMA_NO_NODE); if (!disk) goto out_no_disk; diff -Nupr a/drbd/drbd_nl.c b/drbd/drbd_nl.c --- a/drbd/drbd_nl.c 2024-06-19 15:16:28.118044330 +0800 +++ b/drbd/drbd_nl.c 2024-06-19 15:32:49.535902019 +0800 @@ -2536,13 +2536,13 @@ bool want_bitmap(struct drbd_peer_device } static void close_backing_dev(struct drbd_device *device, - struct bdev_handle *handle, bool do_bd_unlink) + struct file *bdev_file, bool do_bd_unlink) { - if (!handle) + if (!bdev_file) return; if (do_bd_unlink) - bd_unlink_disk_holder(handle->bdev, device->vdisk); - bdev_release(handle); + bd_unlink_disk_holder(file_bdev(bdev_file), device->vdisk); + fput(bdev_file); } void drbd_backing_dev_free(struct drbd_device *device, struct drbd_backing_dev *ldev) @@ -2553,33 +2553,34 @@ void drbd_backing_dev_free(struct drbd_d drbd_dax_close(ldev); close_backing_dev(device, - ldev->md_bdev_handle, + ldev->md_bdev_file, ldev->md_bdev != ldev->backing_bdev); - close_backing_dev(device, ldev->backing_bdev_handle, true); + close_backing_dev(device, ldev->backing_bdev_file, true); kfree(ldev->disk_conf); kfree(ldev); } -static struct bdev_handle *open_backing_dev(struct drbd_device *device, +static struct file *open_backing_dev(struct drbd_device *device, const char *bdev_path, void *claim_ptr) { - struct bdev_handle *handle = bdev_open_by_path(bdev_path, - BLK_OPEN_READ | BLK_OPEN_WRITE, - claim_ptr, NULL); - if (IS_ERR(handle)) { + struct file *file; + + file = bdev_file_open_by_path(bdev_path, BLK_OPEN_READ | BLK_OPEN_WRITE, + claim_ptr, NULL); + if (IS_ERR(file)) { drbd_err(device, "open(\"%s\") failed with %ld\n", - bdev_path, PTR_ERR(handle)); + bdev_path, PTR_ERR(file)); } - return handle; + return file; } static int link_backing_dev(struct drbd_device *device, - const char *bdev_path, struct bdev_handle *handle) + const char *bdev_path, struct file *file) { - int err = bd_link_disk_holder(handle->bdev, device->vdisk); + int err = bd_link_disk_holder(file_bdev(file), device->vdisk); if (err) { - bdev_release(handle); + fput(file); drbd_err(device, "bd_link_disk_holder(\"%s\", ...) failed with %d\n", bdev_path, err); } @@ -2590,22 +2591,22 @@ static int open_backing_devices(struct d struct disk_conf *new_disk_conf, struct drbd_backing_dev *nbc) { - struct bdev_handle *handle; + struct file *file; void *meta_claim_ptr; int err; - handle = open_backing_dev(device, new_disk_conf->backing_dev, device); - if (IS_ERR(handle)) + file = open_backing_dev(device, new_disk_conf->backing_dev, device); + if (IS_ERR(file)) return ERR_OPEN_DISK; - err = link_backing_dev(device, new_disk_conf->backing_dev, handle); + err = link_backing_dev(device, new_disk_conf->backing_dev, file); if (err) { /* close without unlinking; otherwise error path will try to unlink */ - close_backing_dev(device, handle, false); + close_backing_dev(device, file, false); return ERR_OPEN_DISK; } - nbc->backing_bdev = handle->bdev; - nbc->backing_bdev_handle = handle; + nbc->backing_bdev = file_bdev(file); + nbc->backing_bdev_file = file; /* meta_claim_ptr: device, if claimed exclusively; shared drbd_m_holder, * if potentially shared with other drbd minors @@ -2620,23 +2621,23 @@ static int open_backing_devices(struct d * should check it for you already; but if you don't, or * someone fooled it, we need to double check here) */ - handle = open_backing_dev(device, new_disk_conf->meta_dev, meta_claim_ptr); - if (IS_ERR(handle)) + file = open_backing_dev(device, new_disk_conf->meta_dev, meta_claim_ptr); + if (IS_ERR(file)) return ERR_OPEN_MD_DISK; /* avoid double bd_claim_by_disk() for the same (source,target) tuple, * as would happen with internal metadata. */ - if (handle != nbc->backing_bdev_handle) { - err = link_backing_dev(device, new_disk_conf->meta_dev, handle); + if (file != nbc->backing_bdev_file) { + err = link_backing_dev(device, new_disk_conf->meta_dev, file); if (err) { /* close without unlinking; otherwise error path will try to unlink */ - close_backing_dev(device, handle, false); + close_backing_dev(device, file, false); return ERR_OPEN_MD_DISK; } } - nbc->md_bdev = handle->bdev; - nbc->md_bdev_handle = handle; + nbc->md_bdev = file_bdev(file); + nbc->md_bdev_file = file; return NO_ERROR; }