From nobody Sun Nov 24 03:54:20 2024 Received: from dggsgout12.his.huawei.com (dggsgout12.his.huawei.com [45.249.212.56]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 099B1212634; Thu, 7 Nov 2024 13:02:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.56 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730984569; cv=none; b=XDe/0bUM3fF2WNweouiT0mgkqJd8e/7qWSLS5bckuyIlavS9TsFDOS4eVZDQoJVxlRwH1iHjKrU3fd+2U/+PMhz0ng6Hzj1nvRhOKt9goxL4CJg2ptC26CFf4Vkb3vzWlW5L60IWkNBdZIV8kJjeM7eC6HPsfxQg/AmNLurYa7A= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730984569; c=relaxed/simple; bh=IjjSs46jT58D/Li22f7HxuUtahIsOudiCpRxFXd0QWc=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=JIt4yT3arrIMxF+FD13UsahooYAtZq84/4f2CnagrbTXgJo1sI8/f6HMwkj6KeN1fx214hC4C6t2vJRCSoVe0BzunhfsoKJHVEfxSEdxvOoUP5y/VxYn5y0gvuj6iRakwUspE1Ja3bGh/a48lNEsA7E2eCeKoPHmgNRiR3hcjes= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com; spf=pass smtp.mailfrom=huaweicloud.com; arc=none smtp.client-ip=45.249.212.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huaweicloud.com Received: from mail.maildlp.com (unknown [172.19.163.235]) by dggsgout12.his.huawei.com (SkyGuard) with ESMTP id 4Xkj0J51G1z4f3jdh; Thu, 7 Nov 2024 21:02:24 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.128]) by mail.maildlp.com (Postfix) with ESMTP id B21F21A06D7; Thu, 7 Nov 2024 21:02:42 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.104.67]) by APP4 (Coremail) with SMTP id gCh0CgBHIoZxuixn3O1yBA--.8734S4; Thu, 07 Nov 2024 21:02:42 +0800 (CST) From: Yu Kuai To: song@kernel.org Cc: linux-raid@vger.kernel.org, linux-kernel@vger.kernel.org, yukuai3@huawei.com, yukuai1@huaweicloud.com, yi.zhang@huawei.com, yangerkun@huawei.com Subject: [PATCH md-6.13] md: remove bitmap file support Date: Thu, 7 Nov 2024 20:59:11 +0800 Message-Id: <20241107125911.311347-1-yukuai1@huaweicloud.com> X-Mailer: git-send-email 2.39.2 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: gCh0CgBHIoZxuixn3O1yBA--.8734S4 X-Coremail-Antispam: 1UD129KBjvAXoWfWr1fXFWfCr1rGF1rZF48tFb_yoW5Xw4DJo Z3ZwnIqw4rWr1rXrWUArySqFy7WFyqkwnYyw4rCrZ0gF4UZw1jvrWfWrW3J3Z0qF15KF1x tF97Xw1rJF4xJrW7n29KB7ZKAUJUUUU8529EdanIXcx71UUUUU7v73VFW2AGmfu7bjvjm3 AaLaJ3UjIYCTnIWjp_UUUYF7AC8VAFwI0_Gr0_Xr1l1xkIjI8I6I8E6xAIw20EY4v20xva j40_Wr0E3s1l1IIY67AEw4v_Jr0_Jr4l8cAvFVAK0II2c7xJM28CjxkF64kEwVA0rcxSw2 x7M28EF7xvwVC0I7IYx2IY67AKxVW5JVW7JwA2z4x0Y4vE2Ix0cI8IcVCY1x0267AKxVWx JVW8Jr1l84ACjcxK6I8E87Iv67AKxVW0oVCq3wA2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_Gc CE3s1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E 2Ix0cI8IcVAFwI0_JrI_JrylYx0Ex4A2jsIE14v26r1j6r4UMcvjeVCFs4IE7xkEbVWUJV W8JwACjcxG0xvY0x0EwIxGrwACjI8F5VA0II8E6IAqYI8I648v4I1lc7CjxVAaw2AFwI0_ JF0_Jw1l42xK82IYc2Ij64vIr41l4I8I3I0E4IkC6x0Yz7v_Jr0_Gr1lx2IqxVAqx4xG67 AKxVWUJVWUGwC20s026x8GjcxK67AKxVWUGVWUWwC2zVAF1VAY17CE14v26r126r1DMIIY rxkI7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_Jr0_JF4lIxAIcVC0I7IYx2IY6xkF7I0E14 v26r4j6F4UMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWUCwCI42IY6I8E87Iv67AKxVW8JVWx JwCI42IY6I8E87Iv6xkF7I0E14v26r4UJVWxJrUvcSsGvfC2KfnxnUUI43ZEXa7VU18sqt UUUUU== X-CM-SenderInfo: 51xn3trlr6x35dzhxuhorxvhhfrp/ Content-Type: text/plain; charset="utf-8" From: Yu Kuai The bitmap file has been marked as deprecated for more than a year now, let's remove it, and we don't need to care about this case in the new bitmap. Signed-off-by: Yu Kuai --- drivers/md/md-bitmap.c | 269 +++++------------------------------------ drivers/md/md-bitmap.h | 1 - drivers/md/md.c | 195 ++++------------------------- drivers/md/md.h | 53 ++++---- drivers/md/raid5-ppl.c | 2 +- drivers/md/raid5.c | 2 +- 6 files changed, 79 insertions(+), 443 deletions(-) diff --git a/drivers/md/md-bitmap.c b/drivers/md/md-bitmap.c index 29da10e6f703..6895883fc622 100644 --- a/drivers/md/md-bitmap.c +++ b/drivers/md/md-bitmap.c @@ -167,8 +167,6 @@ struct bitmap { int need_sync; =20 struct bitmap_storage { - /* backing disk file */ - struct file *file; /* cached copy of the bitmap file superblock */ struct page *sb_page; unsigned long sb_index; @@ -495,135 +493,6 @@ static void write_sb_page(struct bitmap *bitmap, unsi= gned long pg_index, =20 static void md_bitmap_file_kick(struct bitmap *bitmap); =20 -#ifdef CONFIG_MD_BITMAP_FILE -static void write_file_page(struct bitmap *bitmap, struct page *page, int = wait) -{ - struct buffer_head *bh =3D page_buffers(page); - - while (bh && bh->b_blocknr) { - atomic_inc(&bitmap->pending_writes); - set_buffer_locked(bh); - set_buffer_mapped(bh); - submit_bh(REQ_OP_WRITE | REQ_SYNC, bh); - bh =3D bh->b_this_page; - } - - if (wait) - wait_event(bitmap->write_wait, - atomic_read(&bitmap->pending_writes) =3D=3D 0); -} - -static void end_bitmap_write(struct buffer_head *bh, int uptodate) -{ - struct bitmap *bitmap =3D bh->b_private; - - if (!uptodate) - set_bit(BITMAP_WRITE_ERROR, &bitmap->flags); - if (atomic_dec_and_test(&bitmap->pending_writes)) - wake_up(&bitmap->write_wait); -} - -static void free_buffers(struct page *page) -{ - struct buffer_head *bh; - - if (!PagePrivate(page)) - return; - - bh =3D page_buffers(page); - while (bh) { - struct buffer_head *next =3D bh->b_this_page; - free_buffer_head(bh); - bh =3D next; - } - detach_page_private(page); - put_page(page); -} - -/* read a page from a file. - * We both read the page, and attach buffers to the page to record the - * address of each block (using bmap). These addresses will be used - * to write the block later, completely bypassing the filesystem. - * This usage is similar to how swap files are handled, and allows us - * to write to a file with no concerns of memory allocation failing. - */ -static int read_file_page(struct file *file, unsigned long index, - struct bitmap *bitmap, unsigned long count, struct page *page) -{ - int ret =3D 0; - struct inode *inode =3D file_inode(file); - struct buffer_head *bh; - sector_t block, blk_cur; - unsigned long blocksize =3D i_blocksize(inode); - - pr_debug("read bitmap file (%dB @ %llu)\n", (int)PAGE_SIZE, - (unsigned long long)index << PAGE_SHIFT); - - bh =3D alloc_page_buffers(page, blocksize); - if (!bh) { - ret =3D -ENOMEM; - goto out; - } - attach_page_private(page, bh); - blk_cur =3D index << (PAGE_SHIFT - inode->i_blkbits); - while (bh) { - block =3D blk_cur; - - if (count =3D=3D 0) - bh->b_blocknr =3D 0; - else { - ret =3D bmap(inode, &block); - if (ret || !block) { - ret =3D -EINVAL; - bh->b_blocknr =3D 0; - goto out; - } - - bh->b_blocknr =3D block; - bh->b_bdev =3D inode->i_sb->s_bdev; - if (count < blocksize) - count =3D 0; - else - count -=3D blocksize; - - bh->b_end_io =3D end_bitmap_write; - bh->b_private =3D bitmap; - atomic_inc(&bitmap->pending_writes); - set_buffer_locked(bh); - set_buffer_mapped(bh); - submit_bh(REQ_OP_READ, bh); - } - blk_cur++; - bh =3D bh->b_this_page; - } - - wait_event(bitmap->write_wait, - atomic_read(&bitmap->pending_writes)=3D=3D0); - if (test_bit(BITMAP_WRITE_ERROR, &bitmap->flags)) - ret =3D -EIO; -out: - if (ret) - pr_err("md: bitmap read error: (%dB @ %llu): %d\n", - (int)PAGE_SIZE, - (unsigned long long)index << PAGE_SHIFT, - ret); - return ret; -} -#else /* CONFIG_MD_BITMAP_FILE */ -static void write_file_page(struct bitmap *bitmap, struct page *page, int = wait) -{ -} -static int read_file_page(struct file *file, unsigned long index, - struct bitmap *bitmap, unsigned long count, struct page *page) -{ - return -EIO; -} -static void free_buffers(struct page *page) -{ - put_page(page); -} -#endif /* CONFIG_MD_BITMAP_FILE */ - /* * bitmap file superblock operations */ @@ -642,10 +511,7 @@ static void filemap_write_page(struct bitmap *bitmap, = unsigned long pg_index, pg_index +=3D store->sb_index; } =20 - if (store->file) - write_file_page(bitmap, page, wait); - else - write_sb_page(bitmap, pg_index, page, wait); + write_sb_page(bitmap, pg_index, page, wait); } =20 /* @@ -655,18 +521,15 @@ static void filemap_write_page(struct bitmap *bitmap,= unsigned long pg_index, */ static void md_bitmap_wait_writes(struct bitmap *bitmap) { - if (bitmap->storage.file) - wait_event(bitmap->write_wait, - atomic_read(&bitmap->pending_writes)=3D=3D0); - else - /* Note that we ignore the return value. The writes - * might have failed, but that would just mean that - * some bits which should be cleared haven't been, - * which is safe. The relevant bitmap blocks will - * probably get written again, but there is no great - * loss if they aren't. - */ - md_super_wait(bitmap->mddev); + /* + * Note that we ignore the return value. The writes + * might have failed, but that would just mean that + * some bits which should be cleared haven't been, + * which is safe. The relevant bitmap blocks will + * probably get written again, but there is no great + * loss if they aren't. + */ + md_super_wait(bitmap->mddev); } =20 =20 @@ -704,11 +567,8 @@ static void bitmap_update_sb(void *data) bitmap_info.space); kunmap_atomic(sb); =20 - if (bitmap->storage.file) - write_file_page(bitmap, bitmap->storage.sb_page, 1); - else - write_sb_page(bitmap, bitmap->storage.sb_index, - bitmap->storage.sb_page, 1); + write_sb_page(bitmap, bitmap->storage.sb_index, bitmap->storage.sb_page, + 1); } =20 static void bitmap_print_sb(struct bitmap *bitmap) @@ -821,7 +681,7 @@ static int md_bitmap_read_sb(struct bitmap *bitmap) struct page *sb_page; loff_t offset =3D 0; =20 - if (!bitmap->storage.file && !bitmap->mddev->bitmap_info.offset) { + if (!bitmap->mddev->bitmap_info.offset) { chunksize =3D 128 * 1024 * 1024; daemon_sleep =3D 5 * HZ; write_behind =3D 0; @@ -851,16 +711,8 @@ static int md_bitmap_read_sb(struct bitmap *bitmap) bitmap->cluster_slot, offset); } =20 - if (bitmap->storage.file) { - loff_t isize =3D i_size_read(bitmap->storage.file->f_mapping->host); - int bytes =3D isize > PAGE_SIZE ? PAGE_SIZE : isize; - - err =3D read_file_page(bitmap->storage.file, 0, - bitmap, bytes, sb_page); - } else { - err =3D read_sb_page(bitmap->mddev, offset, sb_page, 0, - sizeof(bitmap_super_t)); - } + err =3D read_sb_page(bitmap->mddev, offset, sb_page, 0, + sizeof(bitmap_super_t)); if (err) return err; =20 @@ -1062,25 +914,18 @@ static int md_bitmap_storage_alloc(struct bitmap_sto= rage *store, =20 static void md_bitmap_file_unmap(struct bitmap_storage *store) { - struct file *file =3D store->file; struct page *sb_page =3D store->sb_page; struct page **map =3D store->filemap; int pages =3D store->file_pages; =20 while (pages--) if (map[pages] !=3D sb_page) /* 0 is sb_page, release it below */ - free_buffers(map[pages]); + put_page(map[pages]); kfree(map); kfree(store->filemap_attr); =20 if (sb_page) - free_buffers(sb_page); - - if (file) { - struct inode *inode =3D file_inode(file); - invalidate_mapping_pages(inode->i_mapping, 0, -1); - fput(file); - } + put_page(sb_page); } =20 /* @@ -1092,14 +937,8 @@ static void md_bitmap_file_kick(struct bitmap *bitmap) { if (!test_and_set_bit(BITMAP_STALE, &bitmap->flags)) { bitmap_update_sb(bitmap); - - if (bitmap->storage.file) { - pr_warn("%s: kicking failed bitmap file %pD4 from array!\n", - bmname(bitmap), bitmap->storage.file); - - } else - pr_warn("%s: disabling internal bitmap due to errors\n", - bmname(bitmap)); + pr_warn("%s: disabling internal bitmap due to errors\n", + bmname(bitmap)); } } =20 @@ -1319,13 +1158,12 @@ static int md_bitmap_init_from_disk(struct bitmap *= bitmap, sector_t start) struct mddev *mddev =3D bitmap->mddev; unsigned long chunks =3D bitmap->counts.chunks; struct bitmap_storage *store =3D &bitmap->storage; - struct file *file =3D store->file; unsigned long node_offset =3D 0; unsigned long bit_cnt =3D 0; unsigned long i; int ret; =20 - if (!file && !mddev->bitmap_info.offset) { + if (!mddev->bitmap_info.offset) { /* No permanent bitmap - fill with '1s'. */ store->filemap =3D NULL; store->file_pages =3D 0; @@ -1340,15 +1178,6 @@ static int md_bitmap_init_from_disk(struct bitmap *b= itmap, sector_t start) return 0; } =20 - if (file && i_size_read(file->f_mapping->host) < store->bytes) { - pr_warn("%s: bitmap file too short %lu < %lu\n", - bmname(bitmap), - (unsigned long) i_size_read(file->f_mapping->host), - store->bytes); - ret =3D -ENOSPC; - goto err; - } - if (mddev_is_clustered(mddev)) node_offset =3D bitmap->cluster_slot * (DIV_ROUND_UP(store->bytes, PAGE_= SIZE)); =20 @@ -1362,11 +1191,7 @@ static int md_bitmap_init_from_disk(struct bitmap *b= itmap, sector_t start) else count =3D PAGE_SIZE; =20 - if (file) - ret =3D read_file_page(file, i, bitmap, count, page); - else - ret =3D read_sb_page(mddev, 0, page, i + node_offset, - count); + ret =3D read_sb_page(mddev, 0, page, i + node_offset, count); if (ret) goto err; } @@ -1444,10 +1269,6 @@ static void bitmap_write_all(struct mddev *mddev) if (!bitmap || !bitmap->storage.filemap) return; =20 - /* Only one copy, so nothing needed */ - if (bitmap->storage.file) - return; - for (i =3D 0; i < bitmap->storage.file_pages; i++) set_page_attr(bitmap, i, BITMAP_PAGE_NEEDWRITE); bitmap->allclean =3D 0; @@ -2105,14 +1926,11 @@ static struct bitmap *__bitmap_create(struct mddev = *mddev, int slot) { struct bitmap *bitmap; sector_t blocks =3D mddev->resync_max_sectors; - struct file *file =3D mddev->bitmap_info.file; int err; struct kernfs_node *bm =3D NULL; =20 BUILD_BUG_ON(sizeof(bitmap_super_t) !=3D 256); =20 - BUG_ON(file && mddev->bitmap_info.offset); - if (test_bit(MD_HAS_JOURNAL, &mddev->flags)) { pr_notice("md/raid:%s: array with journal cannot have bitmap\n", mdname(mddev)); @@ -2140,15 +1958,6 @@ static struct bitmap *__bitmap_create(struct mddev *= mddev, int slot) } else bitmap->sysfs_can_clear =3D NULL; =20 - bitmap->storage.file =3D file; - if (file) { - get_file(file); - /* As future accesses to this file will use bmap, - * and bypass the page cache, we must sync the file - * first. - */ - vfs_fsync(file, 1); - } /* read superblock from bitmap file (this sets mddev->bitmap_info.chunksi= ze) */ if (!mddev->bitmap_info.external) { /* @@ -2352,7 +2161,6 @@ static int bitmap_get_stats(void *data, struct md_bit= map_stats *stats) =20 storage =3D &bitmap->storage; stats->file_pages =3D storage->file_pages; - stats->file =3D storage->file; =20 stats->behind_writes =3D atomic_read(&bitmap->behind_writes); stats->behind_wait =3D wq_has_sleeper(&bitmap->behind_wait); @@ -2383,11 +2191,6 @@ static int __bitmap_resize(struct bitmap *bitmap, se= ctor_t blocks, long pages; struct bitmap_page *new_bp; =20 - if (bitmap->storage.file && !init) { - pr_info("md: cannot resize file-based bitmap\n"); - return -EINVAL; - } - if (chunksize =3D=3D 0) { /* If there is enough space, leave the chunk size unchanged, * else increase by factor of two until there is enough space. @@ -2421,7 +2224,7 @@ static int __bitmap_resize(struct bitmap *bitmap, sec= tor_t blocks, =20 chunks =3D DIV_ROUND_UP_SECTOR_T(blocks, 1 << chunkshift); memset(&store, 0, sizeof(store)); - if (bitmap->mddev->bitmap_info.offset || bitmap->mddev->bitmap_info.file) + if (bitmap->mddev->bitmap_info.offset) ret =3D md_bitmap_storage_alloc(&store, chunks, !bitmap->mddev->bitmap_info.external, mddev_is_clustered(bitmap->mddev) @@ -2443,9 +2246,6 @@ static int __bitmap_resize(struct bitmap *bitmap, sec= tor_t blocks, if (!init) bitmap->mddev->pers->quiesce(bitmap->mddev, 1); =20 - store.file =3D bitmap->storage.file; - bitmap->storage.file =3D NULL; - if (store.sb_page && bitmap->storage.sb_page) memcpy(page_address(store.sb_page), page_address(bitmap->storage.sb_page), @@ -2582,9 +2382,7 @@ static ssize_t location_show(struct mddev *mddev, char *page) { ssize_t len; - if (mddev->bitmap_info.file) - len =3D sprintf(page, "file"); - else if (mddev->bitmap_info.offset) + if (mddev->bitmap_info.offset) len =3D sprintf(page, "%+lld", (long long)mddev->bitmap_info.offset); else len =3D sprintf(page, "none"); @@ -2608,8 +2406,7 @@ location_store(struct mddev *mddev, const char *buf, = size_t len) } } =20 - if (mddev->bitmap || mddev->bitmap_info.file || - mddev->bitmap_info.offset) { + if (mddev->bitmap || mddev->bitmap_info.offset) { /* bitmap already configured. Only option is to clear it */ if (strncmp(buf, "none", 4) !=3D 0) { rv =3D -EBUSY; @@ -2618,22 +2415,11 @@ location_store(struct mddev *mddev, const char *buf= , size_t len) =20 bitmap_destroy(mddev); mddev->bitmap_info.offset =3D 0; - if (mddev->bitmap_info.file) { - struct file *f =3D mddev->bitmap_info.file; - mddev->bitmap_info.file =3D NULL; - fput(f); - } } else { /* No bitmap, OK to set a location */ long long offset; =20 - if (strncmp(buf, "none", 4) =3D=3D 0) - /* nothing to be done */; - else if (strncmp(buf, "file:", 5) =3D=3D 0) { - /* Not supported yet */ - rv =3D -EINVAL; - goto out; - } else { + if (strncmp(buf, "none", 4) !=3D 0) { if (buf[0] =3D=3D '+') rv =3D kstrtoll(buf+1, 10, &offset); else @@ -2864,10 +2650,9 @@ static ssize_t metadata_show(struct mddev *mddev, ch= ar *page) =20 static ssize_t metadata_store(struct mddev *mddev, const char *buf, size_t= len) { - if (mddev->bitmap || - mddev->bitmap_info.file || - mddev->bitmap_info.offset) + if (mddev->bitmap || mddev->bitmap_info.offset) return -EBUSY; + if (strncmp(buf, "external", 8) =3D=3D 0) mddev->bitmap_info.external =3D 1; else if ((strncmp(buf, "internal", 8) =3D=3D 0) || diff --git a/drivers/md/md-bitmap.h b/drivers/md/md-bitmap.h index 662e6fc141a7..4b386954f5f5 100644 --- a/drivers/md/md-bitmap.h +++ b/drivers/md/md-bitmap.h @@ -67,7 +67,6 @@ struct md_bitmap_stats { unsigned long file_pages; unsigned long sync_size; unsigned long pages; - struct file *file; }; =20 struct bitmap_operations { diff --git a/drivers/md/md.c b/drivers/md/md.c index 35c2e1e761aa..03f2a9fafea2 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -1155,7 +1155,7 @@ struct super_type { */ int md_check_no_bitmap(struct mddev *mddev) { - if (!mddev->bitmap_info.file && !mddev->bitmap_info.offset) + if (!mddev->bitmap_info.offset) return 0; pr_warn("%s: bitmaps are not supported for %s\n", mdname(mddev), mddev->pers->name); @@ -1349,8 +1349,7 @@ static int super_90_validate(struct mddev *mddev, str= uct md_rdev *freshest, stru =20 mddev->max_disks =3D MD_SB_DISKS; =20 - if (sb->state & (1<bitmap_info.file =3D=3D NULL) { + if (sb->state & (1<bitmap_info.offset =3D mddev->bitmap_info.default_offset; mddev->bitmap_info.space =3D @@ -1476,7 +1475,7 @@ static void super_90_sync(struct mddev *mddev, struct= md_rdev *rdev) sb->layout =3D mddev->layout; sb->chunk_size =3D mddev->chunk_sectors << 9; =20 - if (mddev->bitmap && mddev->bitmap_info.file =3D=3D NULL) + if (mddev->bitmap) sb->state |=3D (1<disks[0].state =3D (1<max_disks =3D (4096-256)/2; =20 - if ((le32_to_cpu(sb->feature_map) & MD_FEATURE_BITMAP_OFFSET) && - mddev->bitmap_info.file =3D=3D NULL) { + if (le32_to_cpu(sb->feature_map) & MD_FEATURE_BITMAP_OFFSET) { mddev->bitmap_info.offset =3D (__s32)le32_to_cpu(sb->bitmap_offset); /* Metadata doesn't record how much space is available. @@ -2030,7 +2028,7 @@ static void super_1_sync(struct mddev *mddev, struct = md_rdev *rdev) sb->data_offset =3D cpu_to_le64(rdev->data_offset); sb->data_size =3D cpu_to_le64(rdev->sectors); =20 - if (mddev->bitmap && mddev->bitmap_info.file =3D=3D NULL) { + if (mddev->bitmap) { sb->bitmap_offset =3D cpu_to_le32((__u32)mddev->bitmap_info.offset); sb->feature_map =3D cpu_to_le32(MD_FEATURE_BITMAP_OFFSET); } @@ -2227,6 +2225,10 @@ static int super_1_allow_new_offset(struct md_rdev *rdev, unsigned long long new_offset) { + struct mddev *mddev =3D rdev->mddev; + struct md_bitmap_stats stats; + int err; + /* All necessary checks on new >=3D old have been done */ if (new_offset >=3D rdev->data_offset) return 1; @@ -2245,21 +2247,12 @@ super_1_allow_new_offset(struct md_rdev *rdev, if (rdev->sb_start + (32+4)*2 > new_offset) return 0; =20 - if (!rdev->mddev->bitmap_info.file) { - struct mddev *mddev =3D rdev->mddev; - struct md_bitmap_stats stats; - int err; - - err =3D mddev->bitmap_ops->get_stats(mddev->bitmap, &stats); - if (!err && rdev->sb_start + mddev->bitmap_info.offset + - stats.file_pages * (PAGE_SIZE >> 9) > new_offset) - return 0; - } - - if (rdev->badblocks.sector + rdev->badblocks.size > new_offset) - return 0; + err =3D mddev->bitmap_ops->get_stats(mddev->bitmap, &stats); + if (err) + return 1; =20 - return 1; + return rdev->sb_start + mddev->bitmap_info.offset + + stats.file_pages * (PAGE_SIZE >> 9) <=3D new_offset; } =20 static struct super_type super_types[] =3D { @@ -6150,8 +6143,7 @@ int md_run(struct mddev *mddev) (unsigned long long)pers->size(mddev, 0, 0) / 2); err =3D -EINVAL; } - if (err =3D=3D 0 && pers->sync_request && - (mddev->bitmap_info.file || mddev->bitmap_info.offset)) { + if (err =3D=3D 0 && pers->sync_request && mddev->bitmap_info.offset) { err =3D mddev->bitmap_ops->create(mddev, -1); if (err) pr_warn("%s: failed to create bitmap (%d)\n", @@ -6563,17 +6555,8 @@ static int do_md_stop(struct mddev *mddev, int mode) if (mode =3D=3D 0) { pr_info("md: %s stopped.\n", mdname(mddev)); =20 - if (mddev->bitmap_info.file) { - struct file *f =3D mddev->bitmap_info.file; - spin_lock(&mddev->lock); - mddev->bitmap_info.file =3D NULL; - spin_unlock(&mddev->lock); - fput(f); - } mddev->bitmap_info.offset =3D 0; - export_array(mddev); - md_clean(mddev); if (mddev->hold_active =3D=3D UNTIL_STOP) mddev->hold_active =3D 0; @@ -6767,38 +6750,6 @@ static int get_array_info(struct mddev *mddev, void = __user *arg) return 0; } =20 -static int get_bitmap_file(struct mddev *mddev, void __user * arg) -{ - mdu_bitmap_file_t *file =3D NULL; /* too big for stack allocation */ - char *ptr; - int err; - - file =3D kzalloc(sizeof(*file), GFP_NOIO); - if (!file) - return -ENOMEM; - - err =3D 0; - spin_lock(&mddev->lock); - /* bitmap enabled */ - if (mddev->bitmap_info.file) { - ptr =3D file_path(mddev->bitmap_info.file, file->pathname, - sizeof(file->pathname)); - if (IS_ERR(ptr)) - err =3D PTR_ERR(ptr); - else - memmove(file->pathname, ptr, - sizeof(file->pathname)-(ptr-file->pathname)); - } - spin_unlock(&mddev->lock); - - if (err =3D=3D 0 && - copy_to_user(arg, file, sizeof(*file))) - err =3D -EFAULT; - - kfree(file); - return err; -} - static int get_disk_info(struct mddev *mddev, void __user * arg) { mdu_disk_info_t info; @@ -7153,92 +7104,6 @@ static int hot_add_disk(struct mddev *mddev, dev_t d= ev) return err; } =20 -static int set_bitmap_file(struct mddev *mddev, int fd) -{ - int err =3D 0; - - if (mddev->pers) { - if (!mddev->pers->quiesce || !mddev->thread) - return -EBUSY; - if (mddev->recovery || mddev->sync_thread) - return -EBUSY; - /* we should be able to change the bitmap.. */ - } - - if (fd >=3D 0) { - struct inode *inode; - struct file *f; - - if (mddev->bitmap || mddev->bitmap_info.file) - return -EEXIST; /* cannot add when bitmap is present */ - - if (!IS_ENABLED(CONFIG_MD_BITMAP_FILE)) { - pr_warn("%s: bitmap files not supported by this kernel\n", - mdname(mddev)); - return -EINVAL; - } - pr_warn("%s: using deprecated bitmap file support\n", - mdname(mddev)); - - f =3D fget(fd); - - if (f =3D=3D NULL) { - pr_warn("%s: error: failed to get bitmap file\n", - mdname(mddev)); - return -EBADF; - } - - inode =3D f->f_mapping->host; - if (!S_ISREG(inode->i_mode)) { - pr_warn("%s: error: bitmap file must be a regular file\n", - mdname(mddev)); - err =3D -EBADF; - } else if (!(f->f_mode & FMODE_WRITE)) { - pr_warn("%s: error: bitmap file must open for write\n", - mdname(mddev)); - err =3D -EBADF; - } else if (atomic_read(&inode->i_writecount) !=3D 1) { - pr_warn("%s: error: bitmap file is already in use\n", - mdname(mddev)); - err =3D -EBUSY; - } - if (err) { - fput(f); - return err; - } - mddev->bitmap_info.file =3D f; - mddev->bitmap_info.offset =3D 0; /* file overrides offset */ - } else if (mddev->bitmap =3D=3D NULL) - return -ENOENT; /* cannot remove what isn't there */ - err =3D 0; - if (mddev->pers) { - if (fd >=3D 0) { - err =3D mddev->bitmap_ops->create(mddev, -1); - if (!err) - err =3D mddev->bitmap_ops->load(mddev); - - if (err) { - mddev->bitmap_ops->destroy(mddev); - fd =3D -1; - } - } else if (fd < 0) { - mddev->bitmap_ops->destroy(mddev); - } - } - - if (fd < 0) { - struct file *f =3D mddev->bitmap_info.file; - if (f) { - spin_lock(&mddev->lock); - mddev->bitmap_info.file =3D NULL; - spin_unlock(&mddev->lock); - fput(f); - } - } - - return err; -} - /* * md_set_array_info is used two different ways * The original usage is when creating a new array. @@ -7520,11 +7385,6 @@ static int update_array_info(struct mddev *mddev, md= u_array_info_t *info) if (rv) goto err; =20 - if (stats.file) { - rv =3D -EINVAL; - goto err; - } - if (mddev->bitmap_info.nodes) { /* hold PW on all the bitmap lock */ if (md_cluster_ops->lock_all_bitmaps(mddev) <=3D 0) { @@ -7589,18 +7449,19 @@ static int md_getgeo(struct block_device *bdev, str= uct hd_geometry *geo) static inline int md_ioctl_valid(unsigned int cmd) { switch (cmd) { + case GET_BITMAP_FILE: + case SET_BITMAP_FILE: + return -EOPNOTSUPP; case GET_ARRAY_INFO: case GET_DISK_INFO: case RAID_VERSION: return 0; case ADD_NEW_DISK: - case GET_BITMAP_FILE: case HOT_ADD_DISK: case HOT_REMOVE_DISK: case RESTART_ARRAY_RW: case RUN_ARRAY: case SET_ARRAY_INFO: - case SET_BITMAP_FILE: case SET_DISK_FAULTY: case STOP_ARRAY: case STOP_ARRAY_RO: @@ -7619,7 +7480,6 @@ static bool md_ioctl_need_suspend(unsigned int cmd) case ADD_NEW_DISK: case HOT_ADD_DISK: case HOT_REMOVE_DISK: - case SET_BITMAP_FILE: case SET_ARRAY_INFO: return true; default: @@ -7699,9 +7559,6 @@ static int md_ioctl(struct block_device *bdev, blk_mo= de_t mode, =20 case SET_DISK_FAULTY: return set_disk_faulty(mddev, new_decode_dev(arg)); - - case GET_BITMAP_FILE: - return get_bitmap_file(mddev, argp); } =20 if (cmd =3D=3D STOP_ARRAY || cmd =3D=3D STOP_ARRAY_RO) { @@ -7734,10 +7591,8 @@ static int md_ioctl(struct block_device *bdev, blk_m= ode_t mode, */ /* if we are not initialised yet, only ADD_NEW_DISK, STOP_ARRAY, * RUN_ARRAY, and GET_ and SET_BITMAP_FILE are allowed */ - if ((!mddev->raid_disks && !mddev->external) - && cmd !=3D ADD_NEW_DISK && cmd !=3D STOP_ARRAY - && cmd !=3D RUN_ARRAY && cmd !=3D SET_BITMAP_FILE - && cmd !=3D GET_BITMAP_FILE) { + if (!mddev->raid_disks && !mddev->external && cmd !=3D ADD_NEW_DISK && + cmd !=3D STOP_ARRAY && cmd !=3D RUN_ARRAY) { err =3D -ENODEV; goto unlock; } @@ -7833,10 +7688,6 @@ static int md_ioctl(struct block_device *bdev, blk_m= ode_t mode, err =3D do_md_run(mddev); goto unlock; =20 - case SET_BITMAP_FILE: - err =3D set_bitmap_file(mddev, (int)arg); - goto unlock; - default: err =3D -EINVAL; goto unlock; @@ -7855,6 +7706,7 @@ static int md_ioctl(struct block_device *bdev, blk_mo= de_t mode, clear_bit(MD_CLOSING, &mddev->flags); return err; } + #ifdef CONFIG_COMPAT static int md_compat_ioctl(struct block_device *bdev, blk_mode_t mode, unsigned int cmd, unsigned long arg) @@ -8328,11 +8180,6 @@ static void md_bitmap_status(struct seq_file *seq, s= truct mddev *mddev) chunk_kb ? chunk_kb : mddev->bitmap_info.chunksize, chunk_kb ? "KB" : "B"); =20 - if (stats.file) { - seq_puts(seq, ", file: "); - seq_file_path(seq, stats.file, " \t\n"); - } - seq_putc(seq, '\n'); } =20 diff --git a/drivers/md/md.h b/drivers/md/md.h index 4ba93af36126..bae257bc630c 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -360,6 +360,34 @@ enum { MD_RESYNC_ACTIVE =3D 3, }; =20 +struct bitmap_info { + /* + * offset from superblock of start of bitmap. May be negative, but not + * '0' For external metadata, offset from start of device. + */ + loff_t offset; + /* space available at this offset */ + unsigned long space; + /* + * this is the offset to use when hot-adding a bitmap. It should + * eventually be settable by sysfs. + */ + loff_t default_offset; + /* space available at default offset */ + unsigned long default_space; + struct mutex mutex; + unsigned long chunksize; + /* how many jiffies between updates? */ + unsigned long daemon_sleep; + /* write-behind mode */ + unsigned long max_write_behind; + int external; + /* Maximum number of nodes in the cluster */ + int nodes; + /* Name of the cluster */ + char cluster_name[64]; +}; + struct mddev { void *private; struct md_personality *pers; @@ -519,7 +547,6 @@ struct mddev { * in_sync - and related safemode and MD_CHANGE changes * pers (also protected by reconfig_mutex and pending IO). * clearing ->bitmap - * clearing ->bitmap_info.file * changing ->resync_{min,max} * setting MD_RECOVERY_RUNNING (which interacts with resync_{min,max}) */ @@ -537,29 +564,7 @@ struct mddev { =20 void *bitmap; /* the bitmap for the device */ struct bitmap_operations *bitmap_ops; - struct { - struct file *file; /* the bitmap file */ - loff_t offset; /* offset from superblock of - * start of bitmap. May be - * negative, but not '0' - * For external metadata, offset - * from start of device. - */ - unsigned long space; /* space available at this offset */ - loff_t default_offset; /* this is the offset to use when - * hot-adding a bitmap. It should - * eventually be settable by sysfs. - */ - unsigned long default_space; /* space available at - * default offset */ - struct mutex mutex; - unsigned long chunksize; - unsigned long daemon_sleep; /* how many jiffies between updates? */ - unsigned long max_write_behind; /* write-behind mode */ - int external; - int nodes; /* Maximum number of nodes in the cluster */ - char cluster_name[64]; /* Name of the cluster */ - } bitmap_info; + struct bitmap_info bitmap_info; =20 atomic_t max_corr_read_errors; /* max read retries */ struct list_head all_mddevs; diff --git a/drivers/md/raid5-ppl.c b/drivers/md/raid5-ppl.c index 37c4da5311ca..6a1c8d6e1849 100644 --- a/drivers/md/raid5-ppl.c +++ b/drivers/md/raid5-ppl.c @@ -1332,7 +1332,7 @@ int ppl_init_log(struct r5conf *conf) return -EINVAL; } =20 - if (mddev->bitmap_info.file || mddev->bitmap_info.offset) { + if (mddev->bitmap_info.offset) { pr_warn("md/raid:%s PPL is not compatible with bitmap\n", mdname(mddev)); return -EINVAL; diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index f5ac81dd21b2..296501838a60 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -7811,7 +7811,7 @@ static int raid5_run(struct mddev *mddev) } =20 if ((test_bit(MD_HAS_JOURNAL, &mddev->flags) || journal_dev) && - (mddev->bitmap_info.offset || mddev->bitmap_info.file)) { + (mddev->bitmap_info.offset)) { pr_notice("md/raid:%s: array cannot have both journal and bitmap\n", mdname(mddev)); return -EINVAL; --=20 2.39.2