From patchwork Thu Oct 10 13:33:31 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhang Yi X-Patchwork-Id: 13830145 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 270241C9ED8; Thu, 10 Oct 2024 13:35:47 +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=1728567349; cv=none; b=HGt7qG0AO8OZwdiAfUl8JOsKUS7Gu+kDImY3Aua4xG1sfpJnLgf6FprN0fQdzT2H5Aj5kSouDVJ7AL5cmfadDpHWpZetHr4qZtdzSC7eEmrF8azm7RDxHD6tOHVIial7MdnfKgR+hvne1GoVoI9uEtyOTbfc5tv7wndYU9XKkN4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728567349; c=relaxed/simple; bh=g5kmM5f1wHVl2nIsl9Z2qIXRjXjdgwEqBL6l9b83P0I=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=FhaBwCiqEdvjWkIQYC/bOxl+R8jT72fhVIiG6o6x+1zUwiyQkSKG6e5rM1Z2W7A/z0lo6hHSbGjQsVAwgtIu3/xYQH6JWSWj69HQC+dmL2RbNmnZQt5Uh8owVdCQISOL2GZ5WtsJ0AXCBI+mUDZnfUSBvAH3tBZfI/feiYD04rg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huaweicloud.com; arc=none smtp.client-ip=45.249.212.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=huawei.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 4XPW3M2Nthz4f3jXl; Thu, 10 Oct 2024 21:35:27 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.128]) by mail.maildlp.com (Postfix) with ESMTP id 372741A0568; Thu, 10 Oct 2024 21:35:44 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.104.67]) by APP4 (Coremail) with SMTP id gCh0CgCXysYc2AdnDRnZDg--.21356S12; Thu, 10 Oct 2024 21:35:44 +0800 (CST) From: Zhang Yi To: linux-ext4@vger.kernel.org Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu, adilger.kernel@dilger.ca, jack@suse.cz, ritesh.list@gmail.com, yi.zhang@huawei.com, yi.zhang@huaweicloud.com, chengzhihao1@huawei.com, yukuai3@huawei.com Subject: [PATCH v3 08/10] ext4: factor out ext4_do_fallocate() Date: Thu, 10 Oct 2024 21:33:31 +0800 Message-Id: <20241010133333.146793-9-yi.zhang@huawei.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20241010133333.146793-1-yi.zhang@huawei.com> References: <20241010133333.146793-1-yi.zhang@huawei.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: gCh0CgCXysYc2AdnDRnZDg--.21356S12 X-Coremail-Antispam: 1UD129KBjvJXoWxuFy8JFW7Kr48tw1fJFyrJFb_yoWrtw17pF Z8JryUGF4xXa4DWrW0qw4UXFn8ta1kKrWUWrWI9rnaq3s0y3sxKF1YkFyFgFWxtrW8Ar4j vF4Yyry7CF17A3DanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUHab4IE77IF4wAFF20E14v26rWj6s0DM7CY07I20VC2zVCF04k2 6cxKx2IYs7xG6rWj6s0DM7CIcVAFz4kK6r1j6r18M28IrcIa0xkI8VA2jI8067AKxVWUAV Cq3wA2048vs2IY020Ec7CjxVAFwI0_Xr0E3s1l8cAvFVAK0II2c7xJM28CjxkF64kEwVA0 rcxSw2x7M28EF7xvwVC0I7IYx2IY67AKxVW5JVW7JwA2z4x0Y4vE2Ix0cI8IcVCY1x0267 AKxVW8Jr0_Cr1UM28EF7xvwVC2z280aVAFwI0_GcCE3s1l84ACjcxK6I8E87Iv6xkF7I0E 14v26rxl6s0DM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64kE6c02F40Ex7 xfMcIj6xIIjxv20xvE14v26r1j6r18McIj6I8E87Iv67AKxVWUJVW8JwAm72CE4IkC6x0Y z7v_Jr0_Gr1lF7xvr2IYc2Ij64vIr41lF7Iv64x0x7Aq67IIx4CEVc8vx2IErcIFxwACI4 02YVCY1x02628vn2kIc2xKxwCY1x0262kKe7AKxVWUtVW8ZwCF04k20xvY0x0EwIxGrwCF 04k20xvEw4C26cxK6c8Ij28IcwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E14 v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_Jw0_GFylIxkG c2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUCVW8JwCI42IY6xIIjxv20xvEc7CjxVAFwI 0_Cr0_Gr1UMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWUCwCI42IY6I8E87Iv67AKxVWUJVW8 JwCI42IY6I8E87Iv6xkF7I0E14v26r4j6r4UJbIYCTnIWIevJa73UjIFyTuYvjxUFPETDU UUU Sender: yi.zhang@huaweicloud.com X-CM-SenderInfo: d1lo6xhdqjqx5xdzvxpfor3voofrz/ Now the real job of normal fallocate are open coded in ext4_fallocate(), factor out a new helper ext4_do_fallocate() to do the real job, like others functions (e.g. ext4_zero_range()) in ext4_fallocate() do, this can make the code more clear, no functional changes. Signed-off-by: Zhang Yi Reviewed-by: Jan Kara --- fs/ext4/extents.c | 125 ++++++++++++++++++++++------------------------ 1 file changed, 60 insertions(+), 65 deletions(-) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 4e35c2415e9b..2f727104f53d 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -4692,6 +4692,58 @@ static long ext4_zero_range(struct file *file, loff_t offset, return ret; } +static long ext4_do_fallocate(struct file *file, loff_t offset, + loff_t len, int mode) +{ + struct inode *inode = file_inode(file); + loff_t end = offset + len; + loff_t new_size = 0; + ext4_lblk_t start_lblk, len_lblk; + int ret; + + trace_ext4_fallocate_enter(inode, offset, len, mode); + + start_lblk = offset >> inode->i_blkbits; + len_lblk = EXT4_MAX_BLOCKS(len, offset, inode->i_blkbits); + + inode_lock(inode); + + /* We only support preallocation for extent-based files only. */ + if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))) { + ret = -EOPNOTSUPP; + goto out; + } + + if (!(mode & FALLOC_FL_KEEP_SIZE) && + (end > inode->i_size || end > EXT4_I(inode)->i_disksize)) { + new_size = end; + ret = inode_newsize_ok(inode, new_size); + if (ret) + goto out; + } + + /* Wait all existing dio workers, newcomers will block on i_rwsem */ + inode_dio_wait(inode); + + ret = file_modified(file); + if (ret) + goto out; + + ret = ext4_alloc_file_blocks(file, start_lblk, len_lblk, new_size, + EXT4_GET_BLOCKS_CREATE_UNWRIT_EXT); + if (ret) + goto out; + + if (file->f_flags & O_SYNC && EXT4_SB(inode->i_sb)->s_journal) { + ret = ext4_fc_commit(EXT4_SB(inode->i_sb)->s_journal, + EXT4_I(inode)->i_sync_tid); + } +out: + inode_unlock(inode); + trace_ext4_fallocate_exit(inode, offset, len_lblk, ret); + return ret; +} + /* * preallocate space for a file. This implements ext4's fallocate file * operation, which gets called from sys_fallocate system call. @@ -4702,12 +4754,7 @@ static long ext4_zero_range(struct file *file, loff_t offset, long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len) { struct inode *inode = file_inode(file); - loff_t new_size = 0; - unsigned int max_blocks; - int ret = 0; - int flags; - ext4_lblk_t lblk; - unsigned int blkbits = inode->i_blkbits; + int ret; /* * Encrypted inodes can't handle collapse range or insert @@ -4729,71 +4776,19 @@ long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len) ret = ext4_convert_inline_data(inode); inode_unlock(inode); if (ret) - goto exit; + return ret; - if (mode & FALLOC_FL_PUNCH_HOLE) { + if (mode & FALLOC_FL_PUNCH_HOLE) ret = ext4_punch_hole(file, offset, len); - goto exit; - } - - if (mode & FALLOC_FL_COLLAPSE_RANGE) { + else if (mode & FALLOC_FL_COLLAPSE_RANGE) ret = ext4_collapse_range(file, offset, len); - goto exit; - } - - if (mode & FALLOC_FL_INSERT_RANGE) { + else if (mode & FALLOC_FL_INSERT_RANGE) ret = ext4_insert_range(file, offset, len); - goto exit; - } - - if (mode & FALLOC_FL_ZERO_RANGE) { + else if (mode & FALLOC_FL_ZERO_RANGE) ret = ext4_zero_range(file, offset, len, mode); - goto exit; - } - trace_ext4_fallocate_enter(inode, offset, len, mode); - lblk = offset >> blkbits; - - max_blocks = EXT4_MAX_BLOCKS(len, offset, blkbits); - flags = EXT4_GET_BLOCKS_CREATE_UNWRIT_EXT; - - inode_lock(inode); - - /* - * We only support preallocation for extent-based files only - */ - if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))) { - ret = -EOPNOTSUPP; - goto out; - } - - if (!(mode & FALLOC_FL_KEEP_SIZE) && - (offset + len > inode->i_size || - offset + len > EXT4_I(inode)->i_disksize)) { - new_size = offset + len; - ret = inode_newsize_ok(inode, new_size); - if (ret) - goto out; - } - - /* Wait all existing dio workers, newcomers will block on i_rwsem */ - inode_dio_wait(inode); - - ret = file_modified(file); - if (ret) - goto out; - - ret = ext4_alloc_file_blocks(file, lblk, max_blocks, new_size, flags); - if (ret) - goto out; + else + ret = ext4_do_fallocate(file, offset, len, mode); - if (file->f_flags & O_SYNC && EXT4_SB(inode->i_sb)->s_journal) { - ret = ext4_fc_commit(EXT4_SB(inode->i_sb)->s_journal, - EXT4_I(inode)->i_sync_tid); - } -out: - inode_unlock(inode); - trace_ext4_fallocate_exit(inode, offset, max_blocks, ret); -exit: return ret; }