From patchwork Mon Jan 19 21:48:26 2026 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Glass X-Patchwork-Id: 1658 Return-Path: X-Original-To: u-boot-concept@u-boot.org Delivered-To: u-boot-concept@u-boot.org DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=u-boot.org; s=default; t=1768859346; bh=VV95iiTy6vcvR3Jikqg/JwrfB0l+GsPqYGVy7BucgfA=; h=From:To:Date:In-Reply-To:References:CC:Subject:List-Id: List-Archive:List-Help:List-Owner:List-Post:List-Subscribe: List-Unsubscribe:From; b=QcHAsSzM5JM38+VRKX0fp7wabvl/8UK/w49RZptS5WegDO5CQoDapBryW9nkspDxc jdvNOH/veE+dDuI1iTmtv3+M+hZw6EkaplmbljAi3GKs8RWYHvPu5+Xi6JgXd5SSZd OoLWJX2JxR8jOV+mnY6FDr7WZovzcBqAVLbYDnMqauvNPvTJbsNiH4agX51DuC+y9C 646h4Ll+wQdIjxMWuZ5eELKaAMy840gOO4IFseJZ8cKPq63jZOCNlRXXhVNWm4m2rk SvxchCjsKojzkZ9RXDni2i1qDGD8NLRzs3woYqZOBfCH14ZrKivCLqcsb5yvRN1BE8 WW9tpJ/F3lidA== Received: from localhost (localhost [127.0.0.1]) by mail.u-boot.org (Postfix) with ESMTP id 768D369536 for ; Mon, 19 Jan 2026 14:49:06 -0700 (MST) X-Virus-Scanned: Debian amavis at Received: from mail.u-boot.org ([127.0.0.1]) by localhost (mail.u-boot.org [127.0.0.1]) (amavis, port 10024) with ESMTP id DaDjUATMosys for ; Mon, 19 Jan 2026 14:49:06 -0700 (MST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=u-boot.org; s=default; t=1768859346; bh=VV95iiTy6vcvR3Jikqg/JwrfB0l+GsPqYGVy7BucgfA=; h=From:To:Date:In-Reply-To:References:CC:Subject:List-Id: List-Archive:List-Help:List-Owner:List-Post:List-Subscribe: List-Unsubscribe:From; b=QcHAsSzM5JM38+VRKX0fp7wabvl/8UK/w49RZptS5WegDO5CQoDapBryW9nkspDxc jdvNOH/veE+dDuI1iTmtv3+M+hZw6EkaplmbljAi3GKs8RWYHvPu5+Xi6JgXd5SSZd OoLWJX2JxR8jOV+mnY6FDr7WZovzcBqAVLbYDnMqauvNPvTJbsNiH4agX51DuC+y9C 646h4Ll+wQdIjxMWuZ5eELKaAMy840gOO4IFseJZ8cKPq63jZOCNlRXXhVNWm4m2rk SvxchCjsKojzkZ9RXDni2i1qDGD8NLRzs3woYqZOBfCH14ZrKivCLqcsb5yvRN1BE8 WW9tpJ/F3lidA== Received: from mail.u-boot.org (localhost [127.0.0.1]) by mail.u-boot.org (Postfix) with ESMTP id 6616D69525 for ; Mon, 19 Jan 2026 14:49:06 -0700 (MST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=u-boot.org; s=default; t=1768859344; bh=KpbIol5i8hcCFx1lCrc8QTgsRh7mDRh00EAqetU5ha4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=iZIOtMambWTQdlZ7gCOjapSVdNQH6JCw7w/MqoW8PG2ndslK/RRNzY0EIxqjYPMsA ojzG8t8Kr/tXAXqwDgwOmG6FGFYGfura6pqHF3g/cpPXxvkdym4UIsLpuJjwhtsj5i SStGD0tfxCEq8oJHyxaPXD1i3bw4lPeP3Hb25v3I5OJbgxAZG5K8b7GuVaQB/p0y1T fBoCJwQK4s/pcwsjzWlzwQGUl2CMWXXS1Pu5WhtVWyyjM7a9QAijrRWOy0DOtgyhO2 57EeTz3up1Avinr87E9J0ANoauSyMdoFNg1Zl9FyTCcJV6q7PmnM0bjikhwTQXGCRN oQCl68bgywI8w== Received: from localhost (localhost [127.0.0.1]) by mail.u-boot.org (Postfix) with ESMTP id 6E7E0693E1; Mon, 19 Jan 2026 14:49:04 -0700 (MST) X-Virus-Scanned: Debian amavis at Received: from mail.u-boot.org ([127.0.0.1]) by localhost (mail.u-boot.org [127.0.0.1]) (amavis, port 10026) with ESMTP id neVeLmFNfhVX; Mon, 19 Jan 2026 14:49:04 -0700 (MST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=u-boot.org; s=default; t=1768859340; bh=DY/E1xAjv/BBIHt/Gzb8gfn7fS33CqqWOi+BkoRirBQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WHLCJqZBRWjjPjkdOP+XAnzmxNUiCUmMdUyA5e3krB0sbmlRjw0RhgHgxv2R60ZAu wA4aBtgTPBZI1EcIK3LCA5jkM9G6+7es+Z35Ov7bo9YJtQ23u8MEWnWdDySawp9GGS UaOfWKO5PgqwVxBPQ8Ifrb4gGQ6RzOoIIknV3OPA9N8Z7mSRHEKZTWcYWtYJSJXLpg e7NkiC0uNVi58Ue9i09xp+uVA4at2Q+Ud190piBuz2vAGlF5+I0T39d+KbvmbuwOQ6 rh0iEQMVVs/gHziyy0WtfaCxVoWtoLEJH03zFCd+I5VSzpca86ybFhY/+gwXFBs5Tm PkPYtoYgb6J2Q== Received: from u-boot.org (unknown [73.34.74.121]) by mail.u-boot.org (Postfix) with ESMTPSA id 23A1E69537; Mon, 19 Jan 2026 14:49:00 -0700 (MST) From: Simon Glass To: U-Boot Concept Date: Mon, 19 Jan 2026 14:48:26 -0700 Message-ID: <20260119214846.3087611-2-sjg@u-boot.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260119214846.3087611-1-sjg@u-boot.org> References: <20260119214846.3087611-1-sjg@u-boot.org> MIME-Version: 1.0 Message-ID-Hash: 2M2H3LFKODEHGFSJM22VND3YIC2PBV5Q X-Message-ID-Hash: 2M2H3LFKODEHGFSJM22VND3YIC2PBV5Q X-MailFrom: sjg@u-boot.org X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; loop; banned-address; emergency; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: Simon Glass , "Claude Opus 4 . 5" X-Mailman-Version: 3.3.10 Precedence: list Subject: [Concept] [PATCH 01/16] ext4l: Move inode locking stubs to linux/fs.h List-Id: Discussion and patches related to U-Boot Concept Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: From: Simon Glass U-Boot is single-threaded, so inode locking is a no-op. Move the stub macros (inode_lock, inode_unlock, inode_lock_shared, inode_unlock_shared, inode_trylock, inode_trylock_shared, inode_dio_wait, inode_lock_nested) and the I_MUTEX_* enum to include/linux/fs.h where they belong. Co-developed-by: Claude Opus 4.5 Signed-off-by: Simon Glass --- fs/ext4l/ext4_uboot.h | 15 ++------------- include/linux/fs.h | 13 +++++++++++++ 2 files changed, 15 insertions(+), 13 deletions(-) diff --git a/fs/ext4l/ext4_uboot.h b/fs/ext4l/ext4_uboot.h index ba462af45e4..8daf01779c5 100644 --- a/fs/ext4l/ext4_uboot.h +++ b/fs/ext4l/ext4_uboot.h @@ -719,15 +719,7 @@ static inline unsigned long memweight(const void *ptr, size_t bytes) #define bh_uptodate_or_lock(bh) (1) /* ext4_read_bh is stubbed in interface.c */ -/* Inode locking */ -#define inode_lock(inode) do { } while (0) -#define inode_unlock(inode) do { } while (0) -#define inode_lock_shared(inode) do { } while (0) -#define inode_unlock_shared(inode) do { } while (0) -#define inode_trylock(inode) (1) -#define inode_trylock_shared(inode) (1) -#define inode_dio_wait(inode) do { } while (0) - +/* Inode locking stubs are in linux/fs.h */ /* Lock debugging stubs are in linux/lockdep.h */ /* File operations */ @@ -1344,10 +1336,7 @@ static inline void super_set_uuid(struct super_block *sb, const u8 *uuid, #define xattr_handler_can_list(h, d) ({ (void)(h); (void)(d); 0; }) #define xattr_prefix(h) ({ (void)(h); (const char *)NULL; }) -/* I_MUTEX_* inode lock classes are in linux/fs.h */ - -/* Nested inode locking stub */ -#define inode_lock_nested(i, c) do { (void)(i); (void)(c); } while (0) +/* I_MUTEX_* constants and inode locking stubs are in linux/fs.h */ /* PF_MEMALLOC_NOFS is in linux/sched.h */ diff --git a/include/linux/fs.h b/include/linux/fs.h index 5c357cdacd2..6d8b9b5c79b 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -270,4 +270,17 @@ enum { I_MUTEX_PARENT2, }; +/* + * Inode locking stubs - U-Boot is single-threaded, no locking needed. + */ +#define inode_lock(inode) do { (void)(inode); } while (0) +#define inode_unlock(inode) do { (void)(inode); } while (0) +#define inode_lock_shared(inode) do { (void)(inode); } while (0) +#define inode_unlock_shared(inode) do { (void)(inode); } while (0) +#define inode_trylock(inode) ({ (void)(inode); 1; }) +#define inode_trylock_shared(inode) ({ (void)(inode); 1; }) +#define inode_dio_wait(inode) do { (void)(inode); } while (0) +#define inode_lock_nested(inode, subclass) \ + do { (void)(inode); (void)(subclass); } while (0) + #endif /* _LINUX_FS_H */