diff mbox series

[Concept,03/26] fs: ext4l: Add CONFIG_EXT4_JOURNAL option

Message ID	20251222115639.700578-4-sjg@u-boot.org
State	New
Headers	From: Simon Glass <sjg@u-boot.org> To: U-Boot Concept <concept@u-boot.org> Date: Mon, 22 Dec 2025 04:56:07 -0700 Message-ID: <20251222115639.700578-4-sjg@u-boot.org> In-Reply-To: <20251222115639.700578-1-sjg@u-boot.org> References: <20251222115639.700578-1-sjg@u-boot.org> MIME-Version: 1.0 Message-ID-Hash: IH6JXONNXPKBBDOR6G46ZCH6MVDMQ6R6 CC: Simon Glass <simon.glass@canonical.com> Precedence: list Subject: [Concept] [PATCH 03/26] fs: ext4l: Add CONFIG_EXT4_JOURNAL option Archived-At: <https://lists.u-boot.org/archives/list/concept@u-boot.org/message/IH6JXONNXPKBBDOR6G46ZCH6MVDMQ6R6/> Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit
Series	fs: ext4l: Add support for mounting ext4 filesystems (part G) \| [Concept,00/26] fs: ext4l: Add support for mounting ext4 filesystems (part G) [Concept,01/26] fs: ext4l: Add minimal probe support [Concept,02/26] linux: Move common types to types.h [Concept,03/26] fs: ext4l: Add CONFIG_EXT4_JOURNAL option [Concept,04/26] linux: Add jiffies.h with MAX_JIFFY_OFFSET [Concept,05/26] linux: Add blk_types.h with blk_opf_t [Concept,06/26] linux: Add BDEVNAME_SIZE to blkdev.h [Concept,07/26] linux: Update jbd2.h includes [Concept,08/26] linux: printk: Fix KERN_* macros for string concatenation [Concept,09/26] linux: Add rwlock support to spinlock.h [Concept,10/26] fs: ext4l: Use types from linux headers [Concept,11/26] fs: jbd2: Add jbd2_journal_init_global() for ext4l [Concept,12/26] fs: ext4: Allow EXT4_WRITE with FS_EXT4L [Concept,13/26] fs: ext4l: Initialise multi-block allocator [Concept,14/26] fs: ext4l: Initialise extent status cache [Concept,15/26] fs: ext4l: Add super_block and block_device allocations [Concept,16/26] fs: ext4l: Allocate fs_context [Concept,17/26] fs: ext4l: Allocate ext4_fs_context [Concept,18/26] fs: ext4l: Initialise super_block and call ext4_fill_super() [Concept,19/26] fs: ext4l: Add buffer_head I/O infrastructure [Concept,20/26] fs: ext4l: Add CONFIG_EXT4L_DEBUG to control messages [Concept,21/26] fs: ext4l: Use real rbtree implementation [Concept,22/26] fs: ext4l: Add CRC32C implementation [Concept,23/26] linux: crc32c: Use ext4l CRC32C implementation [Concept,24/26] fs: ext4l: Mount filesystems read-only [Concept,25/26] fs: ext4l: Add inode and bmap functions

Commit Message

Simon Glass Dec. 22, 2025, 11:56 a.m. UTC

  From: Simon Glass <simon.glass@canonical.com>

Add a config option to control whether journal (jbd2) support is
included for ext4 filesystems. This defaults to y

Update fs/Makefile to conditionally include jbd2/ based on this
config instead of FS_EXT4L.

Signed-off-by: Simon Glass <simon.glass@canonical.com>
---

 fs/Makefile      |  2 +-
 fs/ext4l/Kconfig | 14 ++++++++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff mbox series

Patch

diff --git a/fs/Makefile b/fs/Makefile
index b6d4f7a9cf7..969888a81da 100644
--- a/fs/Makefile
+++ b/fs/Makefile
@@ -22,7 +22,7 @@  obj-$(CONFIG_CMD_CRAMFS) += cramfs/
 obj-$(CONFIG_FS_EXFAT) += exfat/
 obj-$(CONFIG_FS_EXT4) += ext4/
 obj-$(CONFIG_FS_EXT4L) += ext4l/
-obj-$(CONFIG_FS_EXT4L) += jbd2/
+obj-$(CONFIG_EXT4_JOURNAL) += jbd2/
 obj-$(CONFIG_FS_FAT) += fat/
 obj-$(CONFIG_FS_JFFS2) += jffs2/
 obj-$(CONFIG_SANDBOX) += sandbox/
diff --git a/fs/ext4l/Kconfig b/fs/ext4l/Kconfig
index b6c2329db4a..f1fbe3b1000 100644
--- a/fs/ext4l/Kconfig
+++ b/fs/ext4l/Kconfig
@@ -1,4 +1,7 @@ 
 # SPDX-License-Identifier: GPL-2.0-only
+#
+# Copyright 2025 Canonical Ltd
+# Written by Simon Glass <simon.glass@canonical.com>
 
 config FS_EXT4L
 	bool "Enable ext4 filesystem support (Linux port)"
@@ -8,3 +11,14 @@  config FS_EXT4L
 	  FS_EXT4 (the existing U-Boot ext4 implementation).
 
 	  This requires 64-bit LBA support for proper block counting.
+
+config EXT4_JOURNAL
+	bool "Enable ext4 journal support"
+	depends on FS_EXT4L
+	default y
+	help
+	  This enables journal (jbd2) support for ext4 filesystems. The
+	  journal provides crash-consistency by logging metadata changes
+	  before committing them to the filesystem.
+
+	  If unsure, say Y.