From b30ab7913b0a7b1d3b1091c8cb3abb1a9f1e0824 Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Sun, 3 Jul 2011 13:26:43 +0200 Subject: drbd: Rename "mdev" to "device" sed -i -e 's:mdev:device:g' Signed-off-by: Andreas Gruenbacher Signed-off-by: Philipp Reisner --- drivers/block/drbd/drbd_bitmap.c | 294 +++++++++++++++++++-------------------- 1 file changed, 147 insertions(+), 147 deletions(-) (limited to 'drivers/block/drbd/drbd_bitmap.c') diff --git a/drivers/block/drbd/drbd_bitmap.c b/drivers/block/drbd/drbd_bitmap.c index 49d25cf2f973..001bf43dfc8f 100644 --- a/drivers/block/drbd/drbd_bitmap.c +++ b/drivers/block/drbd/drbd_bitmap.c @@ -113,20 +113,20 @@ struct drbd_bitmap { }; #define bm_print_lock_info(m) __bm_print_lock_info(m, __func__) -static void __bm_print_lock_info(struct drbd_device *mdev, const char *func) +static void __bm_print_lock_info(struct drbd_device *device, const char *func) { - struct drbd_bitmap *b = mdev->bitmap; + struct drbd_bitmap *b = device->bitmap; if (!__ratelimit(&drbd_ratelimit_state)) return; dev_err(DEV, "FIXME %s in %s, bitmap locked for '%s' by %s\n", - drbd_task_to_thread_name(mdev->tconn, current), + drbd_task_to_thread_name(device->tconn, current), func, b->bm_why ?: "?", - drbd_task_to_thread_name(mdev->tconn, b->bm_task)); + drbd_task_to_thread_name(device->tconn, b->bm_task)); } -void drbd_bm_lock(struct drbd_device *mdev, char *why, enum bm_flag flags) +void drbd_bm_lock(struct drbd_device *device, char *why, enum bm_flag flags) { - struct drbd_bitmap *b = mdev->bitmap; + struct drbd_bitmap *b = device->bitmap; int trylock_failed; if (!b) { @@ -138,9 +138,9 @@ void drbd_bm_lock(struct drbd_device *mdev, char *why, enum bm_flag flags) if (trylock_failed) { dev_warn(DEV, "%s going to '%s' but bitmap already locked for '%s' by %s\n", - drbd_task_to_thread_name(mdev->tconn, current), + drbd_task_to_thread_name(device->tconn, current), why, b->bm_why ?: "?", - drbd_task_to_thread_name(mdev->tconn, b->bm_task)); + drbd_task_to_thread_name(device->tconn, b->bm_task)); mutex_lock(&b->bm_change); } if (BM_LOCKED_MASK & b->bm_flags) @@ -151,15 +151,15 @@ void drbd_bm_lock(struct drbd_device *mdev, char *why, enum bm_flag flags) b->bm_task = current; } -void drbd_bm_unlock(struct drbd_device *mdev) +void drbd_bm_unlock(struct drbd_device *device) { - struct drbd_bitmap *b = mdev->bitmap; + struct drbd_bitmap *b = device->bitmap; if (!b) { dev_err(DEV, "FIXME no bitmap in drbd_bm_unlock!?\n"); return; } - if (!(BM_LOCKED_MASK & mdev->bitmap->bm_flags)) + if (!(BM_LOCKED_MASK & device->bitmap->bm_flags)) dev_err(DEV, "FIXME bitmap not locked in bm_unlock\n"); b->bm_flags &= ~BM_LOCKED_MASK; @@ -211,19 +211,19 @@ static unsigned long bm_page_to_idx(struct page *page) /* As is very unlikely that the same page is under IO from more than one * context, we can get away with a bit per page and one wait queue per bitmap. */ -static void bm_page_lock_io(struct drbd_device *mdev, int page_nr) +static void bm_page_lock_io(struct drbd_device *device, int page_nr) { - struct drbd_bitmap *b = mdev->bitmap; + struct drbd_bitmap *b = device->bitmap; void *addr = &page_private(b->bm_pages[page_nr]); wait_event(b->bm_io_wait, !test_and_set_bit(BM_PAGE_IO_LOCK, addr)); } -static void bm_page_unlock_io(struct drbd_device *mdev, int page_nr) +static void bm_page_unlock_io(struct drbd_device *device, int page_nr) { - struct drbd_bitmap *b = mdev->bitmap; + struct drbd_bitmap *b = device->bitmap; void *addr = &page_private(b->bm_pages[page_nr]); clear_bit_unlock(BM_PAGE_IO_LOCK, addr); - wake_up(&mdev->bitmap->bm_io_wait); + wake_up(&device->bitmap->bm_io_wait); } /* set _before_ submit_io, so it may be reset due to being changed @@ -242,22 +242,22 @@ static void bm_set_page_need_writeout(struct page *page) /** * drbd_bm_mark_for_writeout() - mark a page with a "hint" to be considered for writeout - * @mdev: DRBD device. + * @device: DRBD device. * @page_nr: the bitmap page to mark with the "hint" flag * * From within an activity log transaction, we mark a few pages with these * hints, then call drbd_bm_write_hinted(), which will only write out changed * pages which are flagged with this mark. */ -void drbd_bm_mark_for_writeout(struct drbd_device *mdev, int page_nr) +void drbd_bm_mark_for_writeout(struct drbd_device *device, int page_nr) { struct page *page; - if (page_nr >= mdev->bitmap->bm_number_of_pages) { + if (page_nr >= device->bitmap->bm_number_of_pages) { dev_warn(DEV, "BAD: page_nr: %u, number_of_pages: %u\n", - page_nr, (int)mdev->bitmap->bm_number_of_pages); + page_nr, (int)device->bitmap->bm_number_of_pages); return; } - page = mdev->bitmap->bm_pages[page_nr]; + page = device->bitmap->bm_pages[page_nr]; set_bit(BM_PAGE_HINT_WRITEOUT, &page_private(page)); } @@ -340,7 +340,7 @@ static void bm_unmap(unsigned long *p_addr) /* * actually most functions herein should take a struct drbd_bitmap*, not a - * struct drbd_device*, but for the debug macros I like to have the mdev around + * struct drbd_device*, but for the debug macros I like to have the device around * to be able to report device specific. */ @@ -436,11 +436,11 @@ static struct page **bm_realloc_pages(struct drbd_bitmap *b, unsigned long want) /* * called on driver init only. TODO call when a device is created. - * allocates the drbd_bitmap, and stores it in mdev->bitmap. + * allocates the drbd_bitmap, and stores it in device->bitmap. */ -int drbd_bm_init(struct drbd_device *mdev) +int drbd_bm_init(struct drbd_device *device) { - struct drbd_bitmap *b = mdev->bitmap; + struct drbd_bitmap *b = device->bitmap; WARN_ON(b != NULL); b = kzalloc(sizeof(struct drbd_bitmap), GFP_KERNEL); if (!b) @@ -449,28 +449,28 @@ int drbd_bm_init(struct drbd_device *mdev) mutex_init(&b->bm_change); init_waitqueue_head(&b->bm_io_wait); - mdev->bitmap = b; + device->bitmap = b; return 0; } -sector_t drbd_bm_capacity(struct drbd_device *mdev) +sector_t drbd_bm_capacity(struct drbd_device *device) { - if (!expect(mdev->bitmap)) + if (!expect(device->bitmap)) return 0; - return mdev->bitmap->bm_dev_capacity; + return device->bitmap->bm_dev_capacity; } /* called on driver unload. TODO: call when a device is destroyed. */ -void drbd_bm_cleanup(struct drbd_device *mdev) +void drbd_bm_cleanup(struct drbd_device *device) { - if (!expect(mdev->bitmap)) + if (!expect(device->bitmap)) return; - bm_free_pages(mdev->bitmap->bm_pages, mdev->bitmap->bm_number_of_pages); - bm_vk_free(mdev->bitmap->bm_pages, (BM_P_VMALLOCED & mdev->bitmap->bm_flags)); - kfree(mdev->bitmap); - mdev->bitmap = NULL; + bm_free_pages(device->bitmap->bm_pages, device->bitmap->bm_number_of_pages); + bm_vk_free(device->bitmap->bm_pages, (BM_P_VMALLOCED & device->bitmap->bm_flags)); + kfree(device->bitmap); + device->bitmap = NULL; } /* @@ -631,9 +631,9 @@ static u64 drbd_md_on_disk_bits(struct drbd_backing_dev *ldev) * In case this is actually a resize, we copy the old bitmap into the new one. * Otherwise, the bitmap is initialized to all bits set. */ -int drbd_bm_resize(struct drbd_device *mdev, sector_t capacity, int set_new_bits) +int drbd_bm_resize(struct drbd_device *device, sector_t capacity, int set_new_bits) { - struct drbd_bitmap *b = mdev->bitmap; + struct drbd_bitmap *b = device->bitmap; unsigned long bits, words, owords, obits; unsigned long want, have, onpages; /* number of pages */ struct page **npages, **opages = NULL; @@ -643,7 +643,7 @@ int drbd_bm_resize(struct drbd_device *mdev, sector_t capacity, int set_new_bits if (!expect(b)) return -ENOMEM; - drbd_bm_lock(mdev, "resize", BM_LOCKED_MASK); + drbd_bm_lock(device, "resize", BM_LOCKED_MASK); dev_info(DEV, "drbd_bm_resize called with capacity == %llu\n", (unsigned long long)capacity); @@ -678,9 +678,9 @@ int drbd_bm_resize(struct drbd_device *mdev, sector_t capacity, int set_new_bits */ words = ALIGN(bits, 64) >> LN2_BPL; - if (get_ldev(mdev)) { - u64 bits_on_disk = drbd_md_on_disk_bits(mdev->ldev); - put_ldev(mdev); + if (get_ldev(device)) { + u64 bits_on_disk = drbd_md_on_disk_bits(device->ldev); + put_ldev(device); if (bits > bits_on_disk) { dev_info(DEV, "bits = %lu\n", bits); dev_info(DEV, "bits_on_disk = %llu\n", bits_on_disk); @@ -695,7 +695,7 @@ int drbd_bm_resize(struct drbd_device *mdev, sector_t capacity, int set_new_bits D_ASSERT(b->bm_pages != NULL); npages = b->bm_pages; } else { - if (drbd_insert_fault(mdev, DRBD_FAULT_BM_ALLOC)) + if (drbd_insert_fault(device, DRBD_FAULT_BM_ALLOC)) npages = NULL; else npages = bm_realloc_pages(b, want); @@ -745,7 +745,7 @@ int drbd_bm_resize(struct drbd_device *mdev, sector_t capacity, int set_new_bits dev_info(DEV, "resync bitmap: bits=%lu words=%lu pages=%lu\n", bits, words, want); out: - drbd_bm_unlock(mdev); + drbd_bm_unlock(device); return err; } @@ -757,9 +757,9 @@ int drbd_bm_resize(struct drbd_device *mdev, sector_t capacity, int set_new_bits * * maybe bm_set should be atomic_t ? */ -unsigned long _drbd_bm_total_weight(struct drbd_device *mdev) +unsigned long _drbd_bm_total_weight(struct drbd_device *device) { - struct drbd_bitmap *b = mdev->bitmap; + struct drbd_bitmap *b = device->bitmap; unsigned long s; unsigned long flags; @@ -775,20 +775,20 @@ unsigned long _drbd_bm_total_weight(struct drbd_device *mdev) return s; } -unsigned long drbd_bm_total_weight(struct drbd_device *mdev) +unsigned long drbd_bm_total_weight(struct drbd_device *device) { unsigned long s; /* if I don't have a disk, I don't know about out-of-sync status */ - if (!get_ldev_if_state(mdev, D_NEGOTIATING)) + if (!get_ldev_if_state(device, D_NEGOTIATING)) return 0; - s = _drbd_bm_total_weight(mdev); - put_ldev(mdev); + s = _drbd_bm_total_weight(device); + put_ldev(device); return s; } -size_t drbd_bm_words(struct drbd_device *mdev) +size_t drbd_bm_words(struct drbd_device *device) { - struct drbd_bitmap *b = mdev->bitmap; + struct drbd_bitmap *b = device->bitmap; if (!expect(b)) return 0; if (!expect(b->bm_pages)) @@ -797,9 +797,9 @@ size_t drbd_bm_words(struct drbd_device *mdev) return b->bm_words; } -unsigned long drbd_bm_bits(struct drbd_device *mdev) +unsigned long drbd_bm_bits(struct drbd_device *device) { - struct drbd_bitmap *b = mdev->bitmap; + struct drbd_bitmap *b = device->bitmap; if (!expect(b)) return 0; @@ -811,10 +811,10 @@ unsigned long drbd_bm_bits(struct drbd_device *mdev) * bitmap must be locked by drbd_bm_lock. * currently only used from receive_bitmap. */ -void drbd_bm_merge_lel(struct drbd_device *mdev, size_t offset, size_t number, +void drbd_bm_merge_lel(struct drbd_device *device, size_t offset, size_t number, unsigned long *buffer) { - struct drbd_bitmap *b = mdev->bitmap; + struct drbd_bitmap *b = device->bitmap; unsigned long *p_addr, *bm; unsigned long word, bits; unsigned int idx; @@ -860,10 +860,10 @@ void drbd_bm_merge_lel(struct drbd_device *mdev, size_t offset, size_t number, /* copy number words from the bitmap starting at offset into the buffer. * buffer[i] will be little endian unsigned long. */ -void drbd_bm_get_lel(struct drbd_device *mdev, size_t offset, size_t number, +void drbd_bm_get_lel(struct drbd_device *device, size_t offset, size_t number, unsigned long *buffer) { - struct drbd_bitmap *b = mdev->bitmap; + struct drbd_bitmap *b = device->bitmap; unsigned long *p_addr, *bm; size_t end, do_now; @@ -897,9 +897,9 @@ void drbd_bm_get_lel(struct drbd_device *mdev, size_t offset, size_t number, } /* set all bits in the bitmap */ -void drbd_bm_set_all(struct drbd_device *mdev) +void drbd_bm_set_all(struct drbd_device *device) { - struct drbd_bitmap *b = mdev->bitmap; + struct drbd_bitmap *b = device->bitmap; if (!expect(b)) return; if (!expect(b->bm_pages)) @@ -913,9 +913,9 @@ void drbd_bm_set_all(struct drbd_device *mdev) } /* clear all bits in the bitmap */ -void drbd_bm_clear_all(struct drbd_device *mdev) +void drbd_bm_clear_all(struct drbd_device *device) { - struct drbd_bitmap *b = mdev->bitmap; + struct drbd_bitmap *b = device->bitmap; if (!expect(b)) return; if (!expect(b->bm_pages)) @@ -928,7 +928,7 @@ void drbd_bm_clear_all(struct drbd_device *mdev) } struct bm_aio_ctx { - struct drbd_device *mdev; + struct drbd_device *device; atomic_t in_flight; unsigned int done; unsigned flags; @@ -943,7 +943,7 @@ static void bm_aio_ctx_destroy(struct kref *kref) { struct bm_aio_ctx *ctx = container_of(kref, struct bm_aio_ctx, kref); - put_ldev(ctx->mdev); + put_ldev(ctx->device); kfree(ctx); } @@ -951,8 +951,8 @@ static void bm_aio_ctx_destroy(struct kref *kref) static void bm_async_io_complete(struct bio *bio, int error) { struct bm_aio_ctx *ctx = bio->bi_private; - struct drbd_device *mdev = ctx->mdev; - struct drbd_bitmap *b = mdev->bitmap; + struct drbd_device *device = ctx->device; + struct drbd_bitmap *b = device->bitmap; unsigned int idx = bm_page_to_idx(bio->bi_io_vec[0].bv_page); int uptodate = bio_flagged(bio, BIO_UPTODATE); @@ -983,7 +983,7 @@ static void bm_async_io_complete(struct bio *bio, int error) dynamic_dev_dbg(DEV, "bitmap page idx %u completed\n", idx); } - bm_page_unlock_io(mdev, idx); + bm_page_unlock_io(device, idx); if (ctx->flags & BM_AIO_COPY_PAGES) mempool_free(bio->bi_io_vec[0].bv_page, drbd_md_io_page_pool); @@ -992,7 +992,7 @@ static void bm_async_io_complete(struct bio *bio, int error) if (atomic_dec_and_test(&ctx->in_flight)) { ctx->done = 1; - wake_up(&mdev->misc_wait); + wake_up(&device->misc_wait); kref_put(&ctx->kref, &bm_aio_ctx_destroy); } } @@ -1000,23 +1000,23 @@ static void bm_async_io_complete(struct bio *bio, int error) static void bm_page_io_async(struct bm_aio_ctx *ctx, int page_nr, int rw) __must_hold(local) { struct bio *bio = bio_alloc_drbd(GFP_NOIO); - struct drbd_device *mdev = ctx->mdev; - struct drbd_bitmap *b = mdev->bitmap; + struct drbd_device *device = ctx->device; + struct drbd_bitmap *b = device->bitmap; struct page *page; unsigned int len; sector_t on_disk_sector = - mdev->ldev->md.md_offset + mdev->ldev->md.bm_offset; + device->ldev->md.md_offset + device->ldev->md.bm_offset; on_disk_sector += ((sector_t)page_nr) << (PAGE_SHIFT-9); /* this might happen with very small * flexible external meta data device, * or with PAGE_SIZE > 4k */ len = min_t(unsigned int, PAGE_SIZE, - (drbd_md_last_sector(mdev->ldev) - on_disk_sector + 1)<<9); + (drbd_md_last_sector(device->ldev) - on_disk_sector + 1)<<9); /* serialize IO on this page */ - bm_page_lock_io(mdev, page_nr); + bm_page_lock_io(device, page_nr); /* before memcpy and submit, * so it can be redirtied any time */ bm_set_page_unchanged(b->bm_pages[page_nr]); @@ -1027,7 +1027,7 @@ static void bm_page_io_async(struct bm_aio_ctx *ctx, int page_nr, int rw) __must bm_store_page_idx(page, page_nr); } else page = b->bm_pages[page_nr]; - bio->bi_bdev = mdev->ldev->md_bdev; + bio->bi_bdev = device->ldev->md_bdev; bio->bi_iter.bi_sector = on_disk_sector; /* bio_add_page of a single page to an empty bio will always succeed, * according to api. Do we want to assert that? */ @@ -1035,24 +1035,24 @@ static void bm_page_io_async(struct bm_aio_ctx *ctx, int page_nr, int rw) __must bio->bi_private = ctx; bio->bi_end_io = bm_async_io_complete; - if (drbd_insert_fault(mdev, (rw & WRITE) ? DRBD_FAULT_MD_WR : DRBD_FAULT_MD_RD)) { + if (drbd_insert_fault(device, (rw & WRITE) ? DRBD_FAULT_MD_WR : DRBD_FAULT_MD_RD)) { bio->bi_rw |= rw; bio_endio(bio, -EIO); } else { submit_bio(rw, bio); /* this should not count as user activity and cause the * resync to throttle -- see drbd_rs_should_slow_down(). */ - atomic_add(len >> 9, &mdev->rs_sect_ev); + atomic_add(len >> 9, &device->rs_sect_ev); } } /* * bm_rw: read/write the whole bitmap from/to its on disk location. */ -static int bm_rw(struct drbd_device *mdev, int rw, unsigned flags, unsigned lazy_writeout_upper_idx) __must_hold(local) +static int bm_rw(struct drbd_device *device, int rw, unsigned flags, unsigned lazy_writeout_upper_idx) __must_hold(local) { struct bm_aio_ctx *ctx; - struct drbd_bitmap *b = mdev->bitmap; + struct drbd_bitmap *b = device->bitmap; int num_pages, i, count = 0; unsigned long now; char ppb[10]; @@ -1072,7 +1072,7 @@ static int bm_rw(struct drbd_device *mdev, int rw, unsigned flags, unsigned lazy return -ENOMEM; *ctx = (struct bm_aio_ctx) { - .mdev = mdev, + .device = device, .in_flight = ATOMIC_INIT(1), .done = 0, .flags = flags, @@ -1080,7 +1080,7 @@ static int bm_rw(struct drbd_device *mdev, int rw, unsigned flags, unsigned lazy .kref = { ATOMIC_INIT(2) }, }; - if (!get_ldev_if_state(mdev, D_ATTACHING)) { /* put is in bm_aio_ctx_destroy() */ + if (!get_ldev_if_state(device, D_ATTACHING)) { /* put is in bm_aio_ctx_destroy() */ dev_err(DEV, "ASSERT FAILED: get_ldev_if_state() == 1 in bm_rw()\n"); kfree(ctx); return -ENODEV; @@ -1132,7 +1132,7 @@ static int bm_rw(struct drbd_device *mdev, int rw, unsigned flags, unsigned lazy * "in_flight reached zero, all done" event. */ if (!atomic_dec_and_test(&ctx->in_flight)) - wait_until_done_or_force_detached(mdev, mdev->ldev, &ctx->done); + wait_until_done_or_force_detached(device, device->ldev, &ctx->done); else kref_put(&ctx->kref, &bm_aio_ctx_destroy); @@ -1144,7 +1144,7 @@ static int bm_rw(struct drbd_device *mdev, int rw, unsigned flags, unsigned lazy if (ctx->error) { dev_alert(DEV, "we had at least one MD IO ERROR during bitmap IO\n"); - drbd_chk_io_error(mdev, 1, DRBD_META_IO_ERROR); + drbd_chk_io_error(device, 1, DRBD_META_IO_ERROR); err = -EIO; /* ctx->error ? */ } @@ -1153,7 +1153,7 @@ static int bm_rw(struct drbd_device *mdev, int rw, unsigned flags, unsigned lazy now = jiffies; if (rw == WRITE) { - drbd_md_flush(mdev); + drbd_md_flush(device); } else /* rw == READ */ { b->bm_set = bm_count_bits(b); dev_info(DEV, "recounting of set bits took additional %lu jiffies\n", @@ -1171,38 +1171,38 @@ static int bm_rw(struct drbd_device *mdev, int rw, unsigned flags, unsigned lazy /** * drbd_bm_read() - Read the whole bitmap from its on disk location. - * @mdev: DRBD device. + * @device: DRBD device. */ -int drbd_bm_read(struct drbd_device *mdev) __must_hold(local) +int drbd_bm_read(struct drbd_device *device) __must_hold(local) { - return bm_rw(mdev, READ, 0, 0); + return bm_rw(device, READ, 0, 0); } /** * drbd_bm_write() - Write the whole bitmap to its on disk location. - * @mdev: DRBD device. + * @device: DRBD device. * * Will only write pages that have changed since last IO. */ -int drbd_bm_write(struct drbd_device *mdev) __must_hold(local) +int drbd_bm_write(struct drbd_device *device) __must_hold(local) { - return bm_rw(mdev, WRITE, 0, 0); + return bm_rw(device, WRITE, 0, 0); } /** * drbd_bm_write_all() - Write the whole bitmap to its on disk location. - * @mdev: DRBD device. + * @device: DRBD device. * * Will write all pages. */ -int drbd_bm_write_all(struct drbd_device *mdev) __must_hold(local) +int drbd_bm_write_all(struct drbd_device *device) __must_hold(local) { - return bm_rw(mdev, WRITE, BM_WRITE_ALL_PAGES, 0); + return bm_rw(device, WRITE, BM_WRITE_ALL_PAGES, 0); } /** * drbd_bm_write_copy_pages() - Write the whole bitmap to its on disk location. - * @mdev: DRBD device. + * @device: DRBD device. * * Will only write pages that have changed since last IO. * In contrast to drbd_bm_write(), this will copy the bitmap pages @@ -1211,23 +1211,23 @@ int drbd_bm_write_all(struct drbd_device *mdev) __must_hold(local) * verify is aborted due to a failed peer disk, while local IO continues, or * pending resync acks are still being processed. */ -int drbd_bm_write_copy_pages(struct drbd_device *mdev) __must_hold(local) +int drbd_bm_write_copy_pages(struct drbd_device *device) __must_hold(local) { - return bm_rw(mdev, WRITE, BM_AIO_COPY_PAGES, 0); + return bm_rw(device, WRITE, BM_AIO_COPY_PAGES, 0); } /** * drbd_bm_write_hinted() - Write bitmap pages with "hint" marks, if they have changed. - * @mdev: DRBD device. + * @device: DRBD device. */ -int drbd_bm_write_hinted(struct drbd_device *mdev) __must_hold(local) +int drbd_bm_write_hinted(struct drbd_device *device) __must_hold(local) { - return bm_rw(mdev, WRITE, BM_AIO_WRITE_HINTED | BM_AIO_COPY_PAGES, 0); + return bm_rw(device, WRITE, BM_AIO_WRITE_HINTED | BM_AIO_COPY_PAGES, 0); } /** * drbd_bm_write_page() - Writes a PAGE_SIZE aligned piece of bitmap - * @mdev: DRBD device. + * @device: DRBD device. * @idx: bitmap page index * * We don't want to special case on logical_block_size of the backend device, @@ -1237,12 +1237,12 @@ int drbd_bm_write_hinted(struct drbd_device *mdev) __must_hold(local) * In case this becomes an issue on systems with larger PAGE_SIZE, * we may want to change this again to write 4k aligned 4k pieces. */ -int drbd_bm_write_page(struct drbd_device *mdev, unsigned int idx) __must_hold(local) +int drbd_bm_write_page(struct drbd_device *device, unsigned int idx) __must_hold(local) { struct bm_aio_ctx *ctx; int err; - if (bm_test_page_unchanged(mdev->bitmap->bm_pages[idx])) { + if (bm_test_page_unchanged(device->bitmap->bm_pages[idx])) { dynamic_dev_dbg(DEV, "skipped bm page write for idx %u\n", idx); return 0; } @@ -1252,7 +1252,7 @@ int drbd_bm_write_page(struct drbd_device *mdev, unsigned int idx) __must_hold(l return -ENOMEM; *ctx = (struct bm_aio_ctx) { - .mdev = mdev, + .device = device, .in_flight = ATOMIC_INIT(1), .done = 0, .flags = BM_AIO_COPY_PAGES, @@ -1260,21 +1260,21 @@ int drbd_bm_write_page(struct drbd_device *mdev, unsigned int idx) __must_hold(l .kref = { ATOMIC_INIT(2) }, }; - if (!get_ldev_if_state(mdev, D_ATTACHING)) { /* put is in bm_aio_ctx_destroy() */ + if (!get_ldev_if_state(device, D_ATTACHING)) { /* put is in bm_aio_ctx_destroy() */ dev_err(DEV, "ASSERT FAILED: get_ldev_if_state() == 1 in drbd_bm_write_page()\n"); kfree(ctx); return -ENODEV; } bm_page_io_async(ctx, idx, WRITE_SYNC); - wait_until_done_or_force_detached(mdev, mdev->ldev, &ctx->done); + wait_until_done_or_force_detached(device, device->ldev, &ctx->done); if (ctx->error) - drbd_chk_io_error(mdev, 1, DRBD_META_IO_ERROR); + drbd_chk_io_error(device, 1, DRBD_META_IO_ERROR); /* that causes us to detach, so the in memory bitmap will be * gone in a moment as well. */ - mdev->bm_writ_cnt++; + device->bm_writ_cnt++; err = atomic_read(&ctx->in_flight) ? -EIO : ctx->error; kref_put(&ctx->kref, &bm_aio_ctx_destroy); return err; @@ -1288,10 +1288,10 @@ int drbd_bm_write_page(struct drbd_device *mdev, unsigned int idx) __must_hold(l * * this returns a bit number, NOT a sector! */ -static unsigned long __bm_find_next(struct drbd_device *mdev, unsigned long bm_fo, +static unsigned long __bm_find_next(struct drbd_device *device, unsigned long bm_fo, const int find_zero_bit) { - struct drbd_bitmap *b = mdev->bitmap; + struct drbd_bitmap *b = device->bitmap; unsigned long *p_addr; unsigned long bit_offset; unsigned i; @@ -1328,10 +1328,10 @@ static unsigned long __bm_find_next(struct drbd_device *mdev, unsigned long bm_f return bm_fo; } -static unsigned long bm_find_next(struct drbd_device *mdev, +static unsigned long bm_find_next(struct drbd_device *device, unsigned long bm_fo, const int find_zero_bit) { - struct drbd_bitmap *b = mdev->bitmap; + struct drbd_bitmap *b = device->bitmap; unsigned long i = DRBD_END_OF_BITMAP; if (!expect(b)) @@ -1341,39 +1341,39 @@ static unsigned long bm_find_next(struct drbd_device *mdev, spin_lock_irq(&b->bm_lock); if (BM_DONT_TEST & b->bm_flags) - bm_print_lock_info(mdev); + bm_print_lock_info(device); - i = __bm_find_next(mdev, bm_fo, find_zero_bit); + i = __bm_find_next(device, bm_fo, find_zero_bit); spin_unlock_irq(&b->bm_lock); return i; } -unsigned long drbd_bm_find_next(struct drbd_device *mdev, unsigned long bm_fo) +unsigned long drbd_bm_find_next(struct drbd_device *device, unsigned long bm_fo) { - return bm_find_next(mdev, bm_fo, 0); + return bm_find_next(device, bm_fo, 0); } #if 0 /* not yet needed for anything. */ -unsigned long drbd_bm_find_next_zero(struct drbd_device *mdev, unsigned long bm_fo) +unsigned long drbd_bm_find_next_zero(struct drbd_device *device, unsigned long bm_fo) { - return bm_find_next(mdev, bm_fo, 1); + return bm_find_next(device, bm_fo, 1); } #endif /* does not spin_lock_irqsave. * you must take drbd_bm_lock() first */ -unsigned long _drbd_bm_find_next(struct drbd_device *mdev, unsigned long bm_fo) +unsigned long _drbd_bm_find_next(struct drbd_device *device, unsigned long bm_fo) { - /* WARN_ON(!(BM_DONT_SET & mdev->b->bm_flags)); */ - return __bm_find_next(mdev, bm_fo, 0); + /* WARN_ON(!(BM_DONT_SET & device->b->bm_flags)); */ + return __bm_find_next(device, bm_fo, 0); } -unsigned long _drbd_bm_find_next_zero(struct drbd_device *mdev, unsigned long bm_fo) +unsigned long _drbd_bm_find_next_zero(struct drbd_device *device, unsigned long bm_fo) { - /* WARN_ON(!(BM_DONT_SET & mdev->b->bm_flags)); */ - return __bm_find_next(mdev, bm_fo, 1); + /* WARN_ON(!(BM_DONT_SET & device->b->bm_flags)); */ + return __bm_find_next(device, bm_fo, 1); } /* returns number of bits actually changed. @@ -1382,10 +1382,10 @@ unsigned long _drbd_bm_find_next_zero(struct drbd_device *mdev, unsigned long bm * wants bitnr, not sector. * expected to be called for only a few bits (e - s about BITS_PER_LONG). * Must hold bitmap lock already. */ -static int __bm_change_bits_to(struct drbd_device *mdev, const unsigned long s, +static int __bm_change_bits_to(struct drbd_device *device, const unsigned long s, unsigned long e, int val) { - struct drbd_bitmap *b = mdev->bitmap; + struct drbd_bitmap *b = device->bitmap; unsigned long *p_addr = NULL; unsigned long bitnr; unsigned int last_page_nr = -1U; @@ -1431,11 +1431,11 @@ static int __bm_change_bits_to(struct drbd_device *mdev, const unsigned long s, * for val != 0, we change 0 -> 1, return code positive * for val == 0, we change 1 -> 0, return code negative * wants bitnr, not sector */ -static int bm_change_bits_to(struct drbd_device *mdev, const unsigned long s, +static int bm_change_bits_to(struct drbd_device *device, const unsigned long s, const unsigned long e, int val) { unsigned long flags; - struct drbd_bitmap *b = mdev->bitmap; + struct drbd_bitmap *b = device->bitmap; int c = 0; if (!expect(b)) @@ -1445,24 +1445,24 @@ static int bm_change_bits_to(struct drbd_device *mdev, const unsigned long s, spin_lock_irqsave(&b->bm_lock, flags); if ((val ? BM_DONT_SET : BM_DONT_CLEAR) & b->bm_flags) - bm_print_lock_info(mdev); + bm_print_lock_info(device); - c = __bm_change_bits_to(mdev, s, e, val); + c = __bm_change_bits_to(device, s, e, val); spin_unlock_irqrestore(&b->bm_lock, flags); return c; } /* returns number of bits changed 0 -> 1 */ -int drbd_bm_set_bits(struct drbd_device *mdev, const unsigned long s, const unsigned long e) +int drbd_bm_set_bits(struct drbd_device *device, const unsigned long s, const unsigned long e) { - return bm_change_bits_to(mdev, s, e, 1); + return bm_change_bits_to(device, s, e, 1); } /* returns number of bits changed 1 -> 0 */ -int drbd_bm_clear_bits(struct drbd_device *mdev, const unsigned long s, const unsigned long e) +int drbd_bm_clear_bits(struct drbd_device *device, const unsigned long s, const unsigned long e) { - return -bm_change_bits_to(mdev, s, e, 0); + return -bm_change_bits_to(device, s, e, 0); } /* sets all bits in full words, @@ -1494,7 +1494,7 @@ static inline void bm_set_full_words_within_one_page(struct drbd_bitmap *b, * You must first drbd_bm_lock(). * Can be called to set the whole bitmap in one go. * Sets bits from s to e _inclusive_. */ -void _drbd_bm_set_bits(struct drbd_device *mdev, const unsigned long s, const unsigned long e) +void _drbd_bm_set_bits(struct drbd_device *device, const unsigned long s, const unsigned long e) { /* First set_bit from the first bit (s) * up to the next long boundary (sl), @@ -1504,7 +1504,7 @@ void _drbd_bm_set_bits(struct drbd_device *mdev, const unsigned long s, const un * Do not use memset, because we must account for changes, * so we need to loop over the words with hweight() anyways. */ - struct drbd_bitmap *b = mdev->bitmap; + struct drbd_bitmap *b = device->bitmap; unsigned long sl = ALIGN(s,BITS_PER_LONG); unsigned long el = (e+1) & ~((unsigned long)BITS_PER_LONG-1); int first_page; @@ -1516,7 +1516,7 @@ void _drbd_bm_set_bits(struct drbd_device *mdev, const unsigned long s, const un if (e - s <= 3*BITS_PER_LONG) { /* don't bother; el and sl may even be wrong. */ spin_lock_irq(&b->bm_lock); - __bm_change_bits_to(mdev, s, e, 1); + __bm_change_bits_to(device, s, e, 1); spin_unlock_irq(&b->bm_lock); return; } @@ -1527,7 +1527,7 @@ void _drbd_bm_set_bits(struct drbd_device *mdev, const unsigned long s, const un /* bits filling the current long */ if (sl) - __bm_change_bits_to(mdev, s, sl-1, 1); + __bm_change_bits_to(device, s, sl-1, 1); first_page = sl >> (3 + PAGE_SHIFT); last_page = el >> (3 + PAGE_SHIFT); @@ -1539,7 +1539,7 @@ void _drbd_bm_set_bits(struct drbd_device *mdev, const unsigned long s, const un /* first and full pages, unless first page == last page */ for (page_nr = first_page; page_nr < last_page; page_nr++) { - bm_set_full_words_within_one_page(mdev->bitmap, page_nr, first_word, last_word); + bm_set_full_words_within_one_page(device->bitmap, page_nr, first_word, last_word); spin_unlock_irq(&b->bm_lock); cond_resched(); first_word = 0; @@ -1555,7 +1555,7 @@ void _drbd_bm_set_bits(struct drbd_device *mdev, const unsigned long s, const un * as we did not allocate it, it is not present in bitmap->bm_pages. */ if (last_word) - bm_set_full_words_within_one_page(mdev->bitmap, last_page, first_word, last_word); + bm_set_full_words_within_one_page(device->bitmap, last_page, first_word, last_word); /* possibly trailing bits. * example: (e & 63) == 63, el will be e+1. @@ -1563,7 +1563,7 @@ void _drbd_bm_set_bits(struct drbd_device *mdev, const unsigned long s, const un * it would trigger an assert in __bm_change_bits_to() */ if (el <= e) - __bm_change_bits_to(mdev, el, e, 1); + __bm_change_bits_to(device, el, e, 1); spin_unlock_irq(&b->bm_lock); } @@ -1574,10 +1574,10 @@ void _drbd_bm_set_bits(struct drbd_device *mdev, const unsigned long s, const un * 0 ... bit not set * -1 ... first out of bounds access, stop testing for bits! */ -int drbd_bm_test_bit(struct drbd_device *mdev, const unsigned long bitnr) +int drbd_bm_test_bit(struct drbd_device *device, const unsigned long bitnr) { unsigned long flags; - struct drbd_bitmap *b = mdev->bitmap; + struct drbd_bitmap *b = device->bitmap; unsigned long *p_addr; int i; @@ -1588,7 +1588,7 @@ int drbd_bm_test_bit(struct drbd_device *mdev, const unsigned long bitnr) spin_lock_irqsave(&b->bm_lock, flags); if (BM_DONT_TEST & b->bm_flags) - bm_print_lock_info(mdev); + bm_print_lock_info(device); if (bitnr < b->bm_bits) { p_addr = bm_map_pidx(b, bm_bit_to_page_idx(b, bitnr)); i = test_bit_le(bitnr & BITS_PER_PAGE_MASK, p_addr) ? 1 : 0; @@ -1605,10 +1605,10 @@ int drbd_bm_test_bit(struct drbd_device *mdev, const unsigned long bitnr) } /* returns number of bits set in the range [s, e] */ -int drbd_bm_count_bits(struct drbd_device *mdev, const unsigned long s, const unsigned long e) +int drbd_bm_count_bits(struct drbd_device *device, const unsigned long s, const unsigned long e) { unsigned long flags; - struct drbd_bitmap *b = mdev->bitmap; + struct drbd_bitmap *b = device->bitmap; unsigned long *p_addr = NULL; unsigned long bitnr; unsigned int page_nr = -1U; @@ -1625,7 +1625,7 @@ int drbd_bm_count_bits(struct drbd_device *mdev, const unsigned long s, const un spin_lock_irqsave(&b->bm_lock, flags); if (BM_DONT_TEST & b->bm_flags) - bm_print_lock_info(mdev); + bm_print_lock_info(device); for (bitnr = s; bitnr <= e; bitnr++) { unsigned int idx = bm_bit_to_page_idx(b, bitnr); if (page_nr != idx) { @@ -1660,9 +1660,9 @@ int drbd_bm_count_bits(struct drbd_device *mdev, const unsigned long s, const un * reference count of some bitmap extent element from some lru instead... * */ -int drbd_bm_e_weight(struct drbd_device *mdev, unsigned long enr) +int drbd_bm_e_weight(struct drbd_device *device, unsigned long enr) { - struct drbd_bitmap *b = mdev->bitmap; + struct drbd_bitmap *b = device->bitmap; int count, s, e; unsigned long flags; unsigned long *p_addr, *bm; @@ -1674,7 +1674,7 @@ int drbd_bm_e_weight(struct drbd_device *mdev, unsigned long enr) spin_lock_irqsave(&b->bm_lock, flags); if (BM_DONT_TEST & b->bm_flags) - bm_print_lock_info(mdev); + bm_print_lock_info(device); s = S2W(enr); e = min((size_t)S2W(enr+1), b->bm_words); -- cgit v1.2.3