From patchwork Fri Jun 24 22:15:14 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Mahoney X-Patchwork-Id: 9198211 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id A39926077D for ; Fri, 24 Jun 2016 22:16:17 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8AC8B284D7 for ; Fri, 24 Jun 2016 22:16:17 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7EDC1284DD; Fri, 24 Jun 2016 22:16:17 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 26B5A284D7 for ; Fri, 24 Jun 2016 22:16:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751564AbcFXWPs (ORCPT ); Fri, 24 Jun 2016 18:15:48 -0400 Received: from mx2.suse.de ([195.135.220.15]:37872 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751231AbcFXWPc (ORCPT ); Fri, 24 Jun 2016 18:15:32 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay1.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 66121ADE4 for ; Fri, 24 Jun 2016 22:15:28 +0000 (UTC) Received: by starscream.home.jeffm.io (Postfix, from userid 1000) id 30EE785035; Fri, 24 Jun 2016 18:15:25 -0400 (EDT) From: jeffm@suse.com To: linux-btrfs@vger.kernel.org Subject: [PATCH 21/31] btrfs: root->fs_info cleanup, use fs_info->dev_root everywhere Date: Fri, 24 Jun 2016 18:15:14 -0400 Message-Id: <1466806524-27508-22-git-send-email-jeffm@suse.com> X-Mailer: git-send-email 2.7.1 In-Reply-To: <1466806524-27508-1-git-send-email-jeffm@suse.com> References: <1466806524-27508-1-git-send-email-jeffm@suse.com> Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Jeff Mahoney Signed-off-by: Jeff Mahoney --- fs/btrfs/check-integrity.c | 2 +- fs/btrfs/disk-io.c | 4 +-- fs/btrfs/extent-tree.c | 2 +- fs/btrfs/scrub.c | 87 +++++++++++++++++++++++----------------------- fs/btrfs/volumes.c | 41 +++++++++++----------- fs/btrfs/volumes.h | 3 +- 6 files changed, 68 insertions(+), 71 deletions(-) diff --git a/fs/btrfs/check-integrity.c b/fs/btrfs/check-integrity.c index 656e6fa..1c8be44 100644 --- a/fs/btrfs/check-integrity.c +++ b/fs/btrfs/check-integrity.c @@ -835,7 +835,7 @@ static int btrfsic_process_superblock_dev_mirror( superblock_tmp->never_written = 0; superblock_tmp->mirror_num = 1 + superblock_mirror_num; if (state->print_mask & BTRFSIC_PRINT_MASK_SUPERBLOCK_WRITE) - btrfs_info_in_rcu(device->dev_root->fs_info, + btrfs_info_in_rcu(device->fs_info, "new initial S-block (bdev %p, %s) @%llu (%s/%llu/%d)", superblock_bdev, rcu_str_deref(device->name), dev_bytenr, diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 5a71cb8..3503455 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -3264,7 +3264,7 @@ static void btrfs_end_buffer_write_sync(struct buffer_head *bh, int uptodate) struct btrfs_device *device = (struct btrfs_device *) bh->b_private; - btrfs_warn_rl_in_rcu(device->dev_root->fs_info, + btrfs_warn_rl_in_rcu(device->fs_info, "lost page write due to IO error on %s", rcu_str_deref(device->name)); /* note, we don't set_buffer_write_io_error because we have @@ -3409,7 +3409,7 @@ static int write_dev_supers(struct btrfs_device *device, bh = __getblk(device->bdev, bytenr / 4096, BTRFS_SUPER_INFO_SIZE); if (!bh) { - btrfs_err(device->dev_root->fs_info, + btrfs_err(device->fs_info, "couldn't get super buffer head for bytenr %llu", bytenr); errors++; diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 49775d4..17afd22 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -10803,7 +10803,7 @@ static int btrfs_trim_free_extents(struct btrfs_device *device, ret = 0; while (1) { - struct btrfs_fs_info *fs_info = device->dev_root->fs_info; + struct btrfs_fs_info *fs_info = device->fs_info; struct btrfs_transaction *trans; u64 bytes; diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c index 86270c6..a30c850 100644 --- a/fs/btrfs/scrub.c +++ b/fs/btrfs/scrub.c @@ -171,7 +171,7 @@ struct scrub_wr_ctx { struct scrub_ctx { struct scrub_bio *bios[SCRUB_BIOS_PER_SCTX]; - struct btrfs_root *dev_root; + struct btrfs_fs_info *fs_info; int first_free; int curr; atomic_t bios_in_flight; @@ -356,7 +356,7 @@ static void scrub_blocked_if_needed(struct btrfs_fs_info *fs_info) */ static void scrub_pending_trans_workers_inc(struct scrub_ctx *sctx) { - struct btrfs_fs_info *fs_info = sctx->dev_root->fs_info; + struct btrfs_fs_info *fs_info = sctx->fs_info; atomic_inc(&sctx->refs); /* @@ -388,7 +388,7 @@ static void scrub_pending_trans_workers_inc(struct scrub_ctx *sctx) /* used for workers that require transaction commits */ static void scrub_pending_trans_workers_dec(struct scrub_ctx *sctx) { - struct btrfs_fs_info *fs_info = sctx->dev_root->fs_info; + struct btrfs_fs_info *fs_info = sctx->fs_info; /* * see scrub_pending_trans_workers_inc() why we're pretending @@ -458,7 +458,7 @@ struct scrub_ctx *scrub_setup_ctx(struct btrfs_device *dev, int is_dev_replace) { struct scrub_ctx *sctx; int i; - struct btrfs_fs_info *fs_info = dev->dev_root->fs_info; + struct btrfs_fs_info *fs_info = dev->fs_info; int ret; sctx = kzalloc(sizeof(*sctx), GFP_KERNEL); @@ -468,7 +468,7 @@ struct scrub_ctx *scrub_setup_ctx(struct btrfs_device *dev, int is_dev_replace) sctx->is_dev_replace = is_dev_replace; sctx->pages_per_rd_bio = SCRUB_PAGES_PER_RD_BIO; sctx->curr = -1; - sctx->dev_root = dev->dev_root; + sctx->fs_info = dev->fs_info; for (i = 0; i < SCRUB_BIOS_PER_SCTX; ++i) { struct scrub_bio *sbio; @@ -489,8 +489,8 @@ struct scrub_ctx *scrub_setup_ctx(struct btrfs_device *dev, int is_dev_replace) sctx->bios[i]->next_free = -1; } sctx->first_free = 0; - sctx->nodesize = dev->dev_root->nodesize; - sctx->sectorsize = dev->dev_root->sectorsize; + sctx->nodesize = dev->fs_info->dev_root->nodesize; + sctx->sectorsize = dev->fs_info->dev_root->sectorsize; atomic_set(&sctx->bios_in_flight, 0); atomic_set(&sctx->workers_pending, 0); atomic_set(&sctx->cancel_req, 0); @@ -524,7 +524,7 @@ static int scrub_print_warning_inode(u64 inum, u64 offset, u64 root, struct extent_buffer *eb; struct btrfs_inode_item *inode_item; struct scrub_warning *swarn = warn_ctx; - struct btrfs_fs_info *fs_info = swarn->dev->dev_root->fs_info; + struct btrfs_fs_info *fs_info = swarn->dev->fs_info; struct inode_fs_paths *ipath = NULL; struct btrfs_root *local_root; struct btrfs_key root_key; @@ -616,7 +616,7 @@ static void scrub_print_warning(const char *errstr, struct scrub_block *sblock) WARN_ON(sblock->page_count < 1); dev = sblock->pagev[0]->dev; - fs_info = sblock->sctx->dev_root->fs_info; + fs_info = sblock->sctx->fs_info; path = btrfs_alloc_path(); if (!path) @@ -842,10 +842,9 @@ out: spin_lock(&sctx->stat_lock); ++sctx->stat.uncorrectable_errors; spin_unlock(&sctx->stat_lock); - btrfs_dev_replace_stats_inc( - &sctx->dev_root->fs_info->dev_replace. - num_uncorrectable_read_errors); - btrfs_err_rl_in_rcu(sctx->dev_root->fs_info, + btrfs_dev_replace_stats_inc(&sctx->fs_info->dev_replace. + num_uncorrectable_read_errors); + btrfs_err_rl_in_rcu(sctx->fs_info, "unable to fixup (nodatasum) error at logical %llu on dev %s", fixup->logical, rcu_str_deref(fixup->dev->name)); } @@ -897,7 +896,7 @@ static int scrub_handle_errored_block(struct scrub_block *sblock_to_check) DEFAULT_RATELIMIT_BURST); BUG_ON(sblock_to_check->page_count < 1); - fs_info = sctx->dev_root->fs_info; + fs_info = sctx->fs_info; if (sblock_to_check->pagev[0]->flags & BTRFS_EXTENT_FLAG_SUPER) { /* * if we find an error in a super block, we just report it. @@ -1176,8 +1175,7 @@ nodatasum_case: if (scrub_write_page_to_dev_replace(sblock_other, page_num) != 0) { btrfs_dev_replace_stats_inc( - &sctx->dev_root-> - fs_info->dev_replace. + &sctx->fs_info->dev_replace. num_write_errors); success = 0; } @@ -1301,7 +1299,7 @@ static int scrub_setup_recheck_block(struct scrub_block *original_sblock, struct scrub_block *sblocks_for_recheck) { struct scrub_ctx *sctx = original_sblock->sctx; - struct btrfs_fs_info *fs_info = sctx->dev_root->fs_info; + struct btrfs_fs_info *fs_info = sctx->fs_info; u64 length = original_sblock->page_count * PAGE_SIZE; u64 logical = original_sblock->pagev[0]->logical; u64 generation = original_sblock->pagev[0]->generation; @@ -1572,7 +1570,7 @@ static int scrub_repair_page_from_good_copy(struct scrub_block *sblock_bad, int ret; if (!page_bad->dev->bdev) { - btrfs_warn_rl(sblock_bad->sctx->dev_root->fs_info, + btrfs_warn_rl(sblock_bad->sctx->fs_info, "scrub_repair_page_from_good_copy(bdev == NULL) " "is unexpected"); return -EIO; @@ -1594,7 +1592,7 @@ static int scrub_repair_page_from_good_copy(struct scrub_block *sblock_bad, btrfs_dev_stat_inc_and_print(page_bad->dev, BTRFS_DEV_STAT_WRITE_ERRS); btrfs_dev_replace_stats_inc( - &sblock_bad->sctx->dev_root->fs_info-> + &sblock_bad->sctx->fs_info-> dev_replace.num_write_errors); bio_put(bio); return -EIO; @@ -1622,7 +1620,7 @@ static void scrub_write_block_to_dev_replace(struct scrub_block *sblock) ret = scrub_write_page_to_dev_replace(sblock, page_num); if (ret) btrfs_dev_replace_stats_inc( - &sblock->sctx->dev_root->fs_info->dev_replace. + &sblock->sctx->fs_info->dev_replace. num_write_errors); } } @@ -1737,7 +1735,7 @@ static void scrub_wr_submit(struct scrub_ctx *sctx) static void scrub_wr_bio_end_io(struct bio *bio) { struct scrub_bio *sbio = bio->bi_private; - struct btrfs_fs_info *fs_info = sbio->dev->dev_root->fs_info; + struct btrfs_fs_info *fs_info = sbio->dev->fs_info; sbio->err = bio->bi_error; sbio->bio = bio; @@ -1756,7 +1754,7 @@ static void scrub_wr_bio_end_io_worker(struct btrfs_work *work) WARN_ON(sbio->page_count > SCRUB_PAGES_PER_WR_BIO); if (sbio->err) { struct btrfs_dev_replace *dev_replace = - &sbio->sctx->dev_root->fs_info->dev_replace; + &sbio->sctx->fs_info->dev_replace; for (i = 0; i < sbio->page_count; i++) { struct scrub_page *spage = sbio->pagev[i]; @@ -1856,7 +1854,7 @@ static int scrub_checksum_tree_block(struct scrub_block *sblock) { struct scrub_ctx *sctx = sblock->sctx; struct btrfs_header *h; - struct btrfs_root *root = sctx->dev_root; + struct btrfs_root *root = sctx->fs_info->dev_root; struct btrfs_fs_info *fs_info = root->fs_info; u8 calculated_csum[BTRFS_CSUM_SIZE]; u8 on_disk_csum[BTRFS_CSUM_SIZE]; @@ -2122,7 +2120,7 @@ again: static void scrub_missing_raid56_end_io(struct bio *bio) { struct scrub_block *sblock = bio->bi_private; - struct btrfs_fs_info *fs_info = sblock->sctx->dev_root->fs_info; + struct btrfs_fs_info *fs_info = sblock->sctx->fs_info; if (bio->bi_error) sblock->no_io_error_seen = 0; @@ -2149,14 +2147,14 @@ static void scrub_missing_raid56_worker(struct btrfs_work *work) spin_lock(&sctx->stat_lock); sctx->stat.read_errors++; spin_unlock(&sctx->stat_lock); - btrfs_err_rl_in_rcu(sctx->dev_root->fs_info, + btrfs_err_rl_in_rcu(sctx->fs_info, "IO error rebuilding logical %llu for dev %s", logical, rcu_str_deref(dev->name)); } else if (sblock->header_error || sblock->checksum_error) { spin_lock(&sctx->stat_lock); sctx->stat.uncorrectable_errors++; spin_unlock(&sctx->stat_lock); - btrfs_err_rl_in_rcu(sctx->dev_root->fs_info, + btrfs_err_rl_in_rcu(sctx->fs_info, "failed to rebuild valid logical %llu for dev %s", logical, rcu_str_deref(dev->name)); } else { @@ -2178,7 +2176,8 @@ static void scrub_missing_raid56_worker(struct btrfs_work *work) static void scrub_missing_raid56_pages(struct scrub_block *sblock) { struct scrub_ctx *sctx = sblock->sctx; - struct btrfs_fs_info *fs_info = sctx->dev_root->fs_info; + struct btrfs_fs_info *fs_info = sctx->fs_info; + struct btrfs_root *dev_root = fs_info->dev_root; u64 length = sblock->page_count * PAGE_SIZE; u64 logical = sblock->pagev[0]->logical; struct btrfs_bio *bbio = NULL; @@ -2211,7 +2210,7 @@ static void scrub_missing_raid56_pages(struct scrub_block *sblock) bio->bi_private = sblock; bio->bi_end_io = scrub_missing_raid56_end_io; - rbio = raid56_alloc_missing_rbio(sctx->dev_root, bio, bbio, length); + rbio = raid56_alloc_missing_rbio(dev_root, bio, bbio, length); if (!rbio) goto rbio_out; @@ -2330,7 +2329,7 @@ leave_nomem: static void scrub_bio_end_io(struct bio *bio) { struct scrub_bio *sbio = bio->bi_private; - struct btrfs_fs_info *fs_info = sbio->dev->dev_root->fs_info; + struct btrfs_fs_info *fs_info = sbio->dev->fs_info; sbio->err = bio->bi_error; sbio->bio = bio; @@ -2387,7 +2386,7 @@ static inline void __scrub_mark_bitmap(struct scrub_parity *sparity, { u32 offset; int nsectors; - int sectorsize = sparity->sctx->dev_root->sectorsize; + int sectorsize = sparity->sctx->fs_info->dev_root->sectorsize; if (len >= sparity->stripe_len) { bitmap_set(bitmap, 0, sparity->nsectors); @@ -2755,13 +2754,14 @@ static void scrub_parity_bio_endio(struct bio *bio) btrfs_init_work(&sparity->work, btrfs_scrubparity_helper, scrub_parity_bio_endio_worker, NULL, NULL); - btrfs_queue_work(sparity->sctx->dev_root->fs_info->scrub_parity_workers, + btrfs_queue_work(sparity->sctx->fs_info->scrub_parity_workers, &sparity->work); } static void scrub_parity_check_and_repair(struct scrub_parity *sparity) { struct scrub_ctx *sctx = sparity->sctx; + struct btrfs_root *dev_root = sctx->fs_info->dev_root; struct bio *bio; struct btrfs_raid_bio *rbio; struct scrub_page *spage; @@ -2774,8 +2774,7 @@ static void scrub_parity_check_and_repair(struct scrub_parity *sparity) goto out; length = sparity->logic_end - sparity->logic_start; - ret = btrfs_map_sblock(sctx->dev_root->fs_info, WRITE, - sparity->logic_start, + ret = btrfs_map_sblock(sctx->fs_info, WRITE, sparity->logic_start, &length, &bbio, 0, 1); if (ret || !bbio || !bbio->raid_map) goto bbio_out; @@ -2788,7 +2787,7 @@ static void scrub_parity_check_and_repair(struct scrub_parity *sparity) bio->bi_private = sparity; bio->bi_end_io = scrub_parity_bio_endio; - rbio = raid56_parity_alloc_scrub_rbio(sctx->dev_root, bio, bbio, + rbio = raid56_parity_alloc_scrub_rbio(dev_root, bio, bbio, length, sparity->scrub_dev, sparity->dbitmap, sparity->nsectors); @@ -2840,7 +2839,7 @@ static noinline_for_stack int scrub_raid56_parity(struct scrub_ctx *sctx, u64 logic_start, u64 logic_end) { - struct btrfs_fs_info *fs_info = sctx->dev_root->fs_info; + struct btrfs_fs_info *fs_info = sctx->fs_info; struct btrfs_root *root = fs_info->extent_root; struct btrfs_root *csum_root = fs_info->csum_root; struct btrfs_extent_item *extent; @@ -3063,7 +3062,7 @@ static noinline_for_stack int scrub_stripe(struct scrub_ctx *sctx, int is_dev_replace) { struct btrfs_path *path, *ppath; - struct btrfs_fs_info *fs_info = sctx->dev_root->fs_info; + struct btrfs_fs_info *fs_info = sctx->fs_info; struct btrfs_root *root = fs_info->extent_root; struct btrfs_root *csum_root = fs_info->csum_root; struct btrfs_extent_item *extent; @@ -3438,8 +3437,8 @@ static noinline_for_stack int scrub_chunk(struct scrub_ctx *sctx, struct btrfs_block_group_cache *cache, int is_dev_replace) { - struct btrfs_mapping_tree *map_tree = - &sctx->dev_root->fs_info->mapping_tree; + struct btrfs_fs_info *fs_info = sctx->fs_info; + struct btrfs_mapping_tree *map_tree = &fs_info->mapping_tree; struct map_lookup *map; struct extent_map *em; int i; @@ -3492,7 +3491,7 @@ int scrub_enumerate_chunks(struct scrub_ctx *sctx, { struct btrfs_dev_extent *dev_extent = NULL; struct btrfs_path *path; - struct btrfs_root *root = sctx->dev_root; + struct btrfs_root *root = sctx->fs_info->dev_root; struct btrfs_fs_info *fs_info = root->fs_info; u64 length; u64 chunk_offset; @@ -3741,7 +3740,7 @@ static noinline_for_stack int scrub_supers(struct scrub_ctx *sctx, u64 bytenr; u64 gen; int ret; - struct btrfs_root *root = sctx->dev_root; + struct btrfs_root *root = sctx->fs_info->dev_root; if (test_bit(BTRFS_FS_STATE_ERROR, &root->fs_info->fs_state)) return -EIO; @@ -4118,7 +4117,7 @@ static int copy_nocow_pages(struct scrub_ctx *sctx, u64 logical, u64 len, int mirror_num, u64 physical_for_dev_replace) { struct scrub_copy_nocow_ctx *nocow_ctx; - struct btrfs_fs_info *fs_info = sctx->dev_root->fs_info; + struct btrfs_fs_info *fs_info = sctx->fs_info; nocow_ctx = kzalloc(sizeof(*nocow_ctx), GFP_NOFS); if (!nocow_ctx) { @@ -4177,7 +4176,7 @@ static void copy_nocow_pages_worker(struct btrfs_work *work) struct btrfs_root *root; int not_written = 0; - fs_info = sctx->dev_root->fs_info; + fs_info = sctx->fs_info; root = fs_info->extent_root; path = btrfs_alloc_path(); @@ -4292,7 +4291,7 @@ out_unlock: static int copy_nocow_pages_for_inode(u64 inum, u64 offset, u64 root, struct scrub_copy_nocow_ctx *nocow_ctx) { - struct btrfs_fs_info *fs_info = nocow_ctx->sctx->dev_root->fs_info; + struct btrfs_fs_info *fs_info = nocow_ctx->sctx->fs_info; struct btrfs_key key; struct inode *inode; struct page *page; @@ -4422,7 +4421,7 @@ static int write_page_nocow(struct scrub_ctx *sctx, if (!dev) return -EIO; if (!dev->bdev) { - btrfs_warn_rl(dev->dev_root->fs_info, + btrfs_warn_rl(dev->fs_info, "scrub write_page_nocow(bdev == NULL) is unexpected"); return -EIO; } diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 9a155d2..b6e2498 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -368,7 +368,7 @@ static noinline void run_scheduled_bios(struct btrfs_device *device) blk_start_plug(&plug); bdi = blk_get_backing_dev_info(device->bdev); - fs_info = device->dev_root->fs_info; + fs_info = device->fs_info; limit = btrfs_async_submit_limit(fs_info); limit = limit * 2 / 3; @@ -1122,7 +1122,7 @@ int btrfs_account_dev_extents_size(struct btrfs_device *device, u64 start, u64 end, u64 *length) { struct btrfs_key key; - struct btrfs_root *root = device->dev_root; + struct btrfs_root *root = device->fs_info->dev_root; struct btrfs_dev_extent *dev_extent; struct btrfs_path *path; u64 extent_end; @@ -1205,7 +1205,7 @@ static int contains_pending_extent(struct btrfs_transaction *transaction, struct btrfs_device *device, u64 *start, u64 len) { - struct btrfs_fs_info *fs_info = device->dev_root->fs_info; + struct btrfs_fs_info *fs_info = device->fs_info; struct extent_map *em; struct list_head *search_list = &fs_info->pinned_chunks; int ret = 0; @@ -1281,8 +1281,8 @@ int find_free_dev_extent_start(struct btrfs_transaction *transaction, struct btrfs_device *device, u64 num_bytes, u64 search_start, u64 *start, u64 *len) { + struct btrfs_root *root = device->fs_info->dev_root; struct btrfs_key key; - struct btrfs_root *root = device->dev_root; struct btrfs_dev_extent *dev_extent; struct btrfs_path *path; u64 hole_size; @@ -1451,9 +1451,9 @@ static int btrfs_free_dev_extent(struct btrfs_trans_handle *trans, struct btrfs_device *device, u64 start, u64 *dev_extent_len) { + struct btrfs_root *root = device->fs_info->dev_root; int ret; struct btrfs_path *path; - struct btrfs_root *root = device->dev_root; struct btrfs_key key; struct btrfs_key found_key; struct extent_buffer *leaf = NULL; @@ -1512,7 +1512,7 @@ static int btrfs_alloc_dev_extent(struct btrfs_trans_handle *trans, { int ret; struct btrfs_path *path; - struct btrfs_root *root = device->dev_root; + struct btrfs_root *root = device->fs_info->dev_root; struct btrfs_dev_extent *extent; struct extent_buffer *leaf; struct btrfs_key key; @@ -2339,7 +2339,7 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, char *device_path) device->total_bytes = i_size_read(bdev->bd_inode); device->disk_total_bytes = device->total_bytes; device->commit_total_bytes = device->total_bytes; - device->dev_root = root->fs_info->dev_root; + device->fs_info = fs_info; device->bdev = bdev; device->in_fs_metadata = 1; device->is_tgtdev_for_dev_replace = 0; @@ -2548,7 +2548,7 @@ int btrfs_init_dev_replace_tgtdev(struct btrfs_root *root, char *device_path, ASSERT(list_empty(&srcdev->resized_list)); device->commit_total_bytes = srcdev->commit_total_bytes; device->commit_bytes_used = device->bytes_used; - device->dev_root = fs_info->dev_root; + device->fs_info = fs_info; device->bdev = bdev; device->in_fs_metadata = 1; device->is_tgtdev_for_dev_replace = 1; @@ -2576,7 +2576,7 @@ void btrfs_init_dev_replace_tgtdev_for_resume(struct btrfs_fs_info *fs_info, tgtdev->io_width = fs_info->dev_root->sectorsize; tgtdev->io_align = fs_info->dev_root->sectorsize; tgtdev->sector_size = fs_info->dev_root->sectorsize; - tgtdev->dev_root = fs_info->dev_root; + tgtdev->fs_info = fs_info; tgtdev->in_fs_metadata = 1; } @@ -2590,7 +2590,7 @@ static noinline int btrfs_update_device(struct btrfs_trans_handle *trans, struct extent_buffer *leaf; struct btrfs_key key; - root = device->dev_root->fs_info->chunk_root; + root = device->fs_info->chunk_root; path = btrfs_alloc_path(); if (!path) @@ -2631,8 +2631,7 @@ out: int btrfs_grow_device(struct btrfs_trans_handle *trans, struct btrfs_device *device, u64 new_size) { - struct btrfs_super_block *super_copy = - device->dev_root->fs_info->super_copy; + struct btrfs_super_block *super_copy = device->fs_info->super_copy; struct btrfs_fs_devices *fs_devices; u64 old_total; u64 diff; @@ -2640,28 +2639,28 @@ int btrfs_grow_device(struct btrfs_trans_handle *trans, if (!device->writeable) return -EACCES; - lock_chunks(device->dev_root); + lock_chunks(device->fs_info->dev_root); old_total = btrfs_super_total_bytes(super_copy); diff = new_size - device->total_bytes; if (new_size <= device->total_bytes || device->is_tgtdev_for_dev_replace) { - unlock_chunks(device->dev_root); + unlock_chunks(device->fs_info->dev_root); return -EINVAL; } - fs_devices = device->dev_root->fs_info->fs_devices; + fs_devices = device->fs_info->fs_devices; btrfs_set_super_total_bytes(super_copy, old_total + diff); device->fs_devices->total_rw_bytes += diff; btrfs_device_set_total_bytes(device, new_size); btrfs_device_set_disk_total_bytes(device, new_size); - btrfs_clear_space_info_full(device->dev_root->fs_info); + btrfs_clear_space_info_full(device->fs_info); if (list_empty(&device->resized_list)) list_add_tail(&device->resized_list, &fs_devices->resized_devices); - unlock_chunks(device->dev_root); + unlock_chunks(device->fs_info->dev_root); return btrfs_update_device(trans, device); } @@ -4288,7 +4287,7 @@ int btrfs_check_uuid_tree(struct btrfs_fs_info *fs_info) int btrfs_shrink_device(struct btrfs_device *device, u64 new_size) { struct btrfs_trans_handle *trans; - struct btrfs_root *root = device->dev_root; + struct btrfs_root *root = device->fs_info->dev_root; struct btrfs_dev_extent *dev_extent = NULL; struct btrfs_path *path; u64 length; @@ -6804,7 +6803,7 @@ void btrfs_init_devices_late(struct btrfs_fs_info *fs_info) while (fs_devices) { mutex_lock(&fs_devices->device_list_mutex); list_for_each_entry(device, &fs_devices->devices, dev_list) - device->dev_root = fs_info->dev_root; + device->fs_info = fs_info; mutex_unlock(&fs_devices->device_list_mutex); fs_devices = fs_devices->seed; @@ -6980,7 +6979,7 @@ static void btrfs_dev_stat_print_on_error(struct btrfs_device *dev) { if (!dev->dev_stats_valid) return; - btrfs_err_rl_in_rcu(dev->dev_root->fs_info, + btrfs_err_rl_in_rcu(dev->fs_info, "bdev %s errs: wr %u, rd %u, flush %u, corrupt %u, gen %u", rcu_str_deref(dev->name), btrfs_dev_stat_read(dev, BTRFS_DEV_STAT_WRITE_ERRS), @@ -7000,7 +6999,7 @@ static void btrfs_dev_stat_print_on_load(struct btrfs_device *dev) if (i == BTRFS_DEV_STAT_VALUES_MAX) return; /* all values == 0, suppress message */ - btrfs_info_in_rcu(dev->dev_root->fs_info, + btrfs_info_in_rcu(dev->fs_info, "bdev %s errs: wr %u, rd %u, flush %u, corrupt %u, gen %u", rcu_str_deref(dev->name), btrfs_dev_stat_read(dev, BTRFS_DEV_STAT_WRITE_ERRS), diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h index 6c765c0..a0ac26e 100644 --- a/fs/btrfs/volumes.h +++ b/fs/btrfs/volumes.h @@ -51,8 +51,7 @@ struct btrfs_device { struct list_head dev_list; struct list_head dev_alloc_list; struct btrfs_fs_devices *fs_devices; - - struct btrfs_root *dev_root; + struct btrfs_fs_info *fs_info; struct rcu_string *name;