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[2003:f6:f72f:3200:fa63:3fff:fe02:74c]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-367cde89164sm1569239f8f.63.2024.07.08.23.32.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 08 Jul 2024 23:32:20 -0700 (PDT) From: Johannes Thumshirn Date: Tue, 09 Jul 2024 08:32:13 +0200 Subject: [PATCH 2/2] btrfs: replace stripe extents Precedence: bulk X-Mailing-List: linux-btrfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240709-b4-rst-updates-v1-2-200800dfe0fd@kernel.org> References: <20240709-b4-rst-updates-v1-0-200800dfe0fd@kernel.org> In-Reply-To: <20240709-b4-rst-updates-v1-0-200800dfe0fd@kernel.org> To: Chris Mason , Josef Bacik , David Sterba Cc: linux-btrfs@vger.kernel.org, linux-kernel@vger.kernel.org, Qu Wenru , Filipe Manana , Johannes Thumshirn X-Mailer: b4 0.12.4 X-Developer-Signature: v=1; a=openpgp-sha256; l=2363; i=jth@kernel.org; h=from:subject:message-id; bh=iXS0EqJj2fo7X0N8Hop1tMZDVNOW43TMkN/0GZKub28=; b=owGbwMvMwCV2ad4npfVdsu8YT6slMaT13CwsZk7/q5y3VSrrV8daQ5m3CzZN9fS1+WBuuSZPX TPojUZLRykLgxgXg6yYIsvxUNv9EqZH2Kccem0GM4eVCWQIAxenAEzE153hr8jGx2adVyJXTDNP 7bQVrIp7trL7K7OxjW1M7/H/TOUM3xkZGoS0lHoubA7jkY/gPjTH+eJ6Voue1R8smWrmX9yk9MC SBwA= X-Developer-Key: i=jth@kernel.org; a=openpgp; fpr=EC389CABC2C4F25D8600D0D00393969D2D760850 From: Johannes Thumshirn Update stripe extents in case a write to an already existing address incoming. Signed-off-by: Johannes Thumshirn Reviewed-by: Qu Wenruo --- fs/btrfs/raid-stripe-tree.c | 51 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) diff --git a/fs/btrfs/raid-stripe-tree.c b/fs/btrfs/raid-stripe-tree.c index e6f7a234b8f6..fd56535b2289 100644 --- a/fs/btrfs/raid-stripe-tree.c +++ b/fs/btrfs/raid-stripe-tree.c @@ -73,6 +73,55 @@ int btrfs_delete_raid_extent(struct btrfs_trans_handle *trans, u64 start, u64 le return ret; } +static int update_raid_extent_item(struct btrfs_trans_handle *trans, + struct btrfs_key *key, + struct btrfs_io_context *bioc) +{ + struct btrfs_path *path; + struct extent_buffer *leaf; + struct btrfs_stripe_extent *stripe_extent; + int num_stripes; + int ret; + int slot; + + path = btrfs_alloc_path(); + if (!path) + return -ENOMEM; + + ret = btrfs_search_slot(trans, trans->fs_info->stripe_root, key, path, + 0, 1); + if (ret) + return ret == 1 ? ret : -EINVAL; + + leaf = path->nodes[0]; + slot = path->slots[0]; + + btrfs_item_key_to_cpu(leaf, key, slot); + num_stripes = btrfs_num_raid_stripes(btrfs_item_size(leaf, slot)); + stripe_extent = btrfs_item_ptr(leaf, slot, struct btrfs_stripe_extent); + + ASSERT(key->offset == bioc->size); + + for (int i = 0; i < num_stripes; i++) { + u64 devid = bioc->stripes[i].dev->devid; + u64 physical = bioc->stripes[i].physical; + u64 length = bioc->stripes[i].length; + struct btrfs_raid_stride *raid_stride = + &stripe_extent->strides[i]; + + if (length == 0) + length = bioc->size; + + btrfs_set_raid_stride_devid(leaf, raid_stride, devid); + btrfs_set_raid_stride_physical(leaf, raid_stride, physical); + } + + btrfs_mark_buffer_dirty(trans, leaf); + btrfs_free_path(path); + + return ret; +} + static int btrfs_insert_one_raid_extent(struct btrfs_trans_handle *trans, struct btrfs_io_context *bioc) { @@ -112,6 +161,8 @@ static int btrfs_insert_one_raid_extent(struct btrfs_trans_handle *trans, ret = btrfs_insert_item(trans, stripe_root, &stripe_key, stripe_extent, item_size); + if (ret == -EEXIST) + ret = update_raid_extent_item(trans, &stripe_key, bioc); if (ret) btrfs_abort_transaction(trans, ret);