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Ts'o" , Muchun Song , Oscar Salvador , David Hildenbrand , David Howells , Paulo Alcantara , Andreas Dilger , Jan Kara , Jaegeuk Kim , Chao Yu , Trond Myklebust , Anna Schumaker , Chuck Lever , NeilBrown , Olga Kornievskaia , Dai Ngo , Tom Talpey , Steve French , Ronnie Sahlberg , Shyam Prasad N , Bharath SM , Alexander Aring , Ryusuke Konishi , Viacheslav Dubeyko , Eric Van Hensbergen , Latchesar Ionkov , Dominique Martinet , Christian Schoenebeck , David Sterba , Marc Dionne , Ian Kent , Luis de Bethencourt , Salah Triki , "Tigran A. 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Wong" , Martin Schiller , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, nvdimm@lists.linux.dev, fsverity@lists.linux.dev, linux-mm@kvack.org, netfs@lists.linux.dev, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-nfs@vger.kernel.org, linux-cifs@vger.kernel.org, samba-technical@lists.samba.org, linux-nilfs@vger.kernel.org, v9fs@lists.linux.dev, linux-afs@lists.infradead.org, autofs@vger.kernel.org, ceph-devel@vger.kernel.org, codalist@coda.cs.cmu.edu, ecryptfs@vger.kernel.org, linux-mtd@lists.infradead.org, jfs-discussion@lists.sourceforge.net, ntfs3@lists.linux.dev, ocfs2-devel@lists.linux.dev, devel@lists.orangefs.org, linux-unionfs@vger.kernel.org, apparmor@lists.ubuntu.com, linux-security-module@vger.kernel.org, linux-integrity@vger.kernel.org, selinux@vger.kernel.org, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-media@vger.kernel.org, linaro-mm-sig@lists.linaro.org, netdev@vger.kernel.org, linux-perf-users@vger.kernel.org, linux-fscrypt@vger.kernel.org, linux-xfs@vger.kernel.org, linux-hams@vger.kernel.org, linux-x25@vger.kernel.org Date: Fri, 27 Feb 2026 14:35:07 -0500 In-Reply-To: References: <20260226-iino-u64-v1-0-ccceff366db9@kernel.org> <4a462d40899698586c110add96ce3fab6ddac30b.camel@kernel.org> Autocrypt: addr=jlayton@kernel.org; prefer-encrypt=mutual; keydata=mQINBE6V0TwBEADXhJg7s8wFDwBMEvn0qyhAnzFLTOCHooMZyx7XO7dAiIhDSi7G1NPxw n8jdFUQMCR/GlpozMFlSFiZXiObE7sef9rTtM68ukUyZM4pJ9l0KjQNgDJ6Fr342Htkjxu/kFV1Wv egyjnSsFt7EGoDjdKqr1TS9syJYFjagYtvWk/UfHlW09X+jOh4vYtfX7iYSx/NfqV3W1D7EDi0PqV T2h6v8i8YqsATFPwO4nuiTmL6I40ZofxVd+9wdRI4Db8yUNA4ZSP2nqLcLtFjClYRBoJvRWvsv4lm 0OX6MYPtv76hka8lW4mnRmZqqx3UtfHX/hF/zH24Gj7A6sYKYLCU3YrI2Ogiu7/ksKcl7goQjpvtV YrOOI5VGLHge0awt7bhMCTM9KAfPc+xL/ZxAMVWd3NCk5SamL2cE99UWgtvNOIYU8m6EjTLhsj8sn VluJH0/RcxEeFbnSaswVChNSGa7mXJrTR22lRL6ZPjdMgS2Km90haWPRc8Wolcz07Y2se0xpGVLEQ 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QvQZAtv9DdXzpWAFbYOUr/hy3eEpwcBEyW/tNEXVQrk6/l1ejoylepPyKaER8Bl7InFpgqLaHeY8ham1X90U2qSlliCMu+yBCsvYRNhGJ6wOX4i58X4MuV57R2nPIxIM/UP7gssPMCNPFqkTASyZFIogdAf3fGzzhSDEj2z2HFN34dLqa/lHoJgqMUrdGea2Uc8ffxunA8Y5XapYUXADJ++9zBAQYF8CTflsGKIi+RjTUge9iBL401pTEDkdg6jIWJ9Z40SCGSN6XCTZqs2VnGozRxkfJy+NYOXi3RAmf9g+UwoiIwUTOZXzEWaPqdmE+3a4xN745ulpsfGIvehN8kuUa4Wv5Tp04jvY2db9fg81V2QqtjJq2Tb3tZ8Q+da/ILH6j4RRsNwQ== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Fri, 2026-02-27 at 14:01 -0500, Mathieu Desnoyers wrote: > On 2026-02-27 12:19, Jeff Layton wrote: > > On Thu, 2026-02-26 at 16:49 +0000, Matthew Wilcox wrote: > > > On Thu, Feb 26, 2026 at 10:55:02AM -0500, Jeff Layton wrote: > > > > The bulk of the changes are to format strings and tracepoints, sinc= e the > > > > kernel itself doesn't care that much about the i_ino field. The fir= st > > > > patch changes some vfs function arguments, so check that one out > > > > carefully. > > >=20 > > > Why are the format strings all done as separate patches? Don't we ge= t > > > bisection hazards by splitting it apart this way? > >=20 > > Circling back to this... > >=20 > > I have a v2 series (~107 patches) that I'm testing now that does this > > more bisectably with the typedef and macro scaffolding that Mathieu > > suggested. I'll probably send it early next week. > >=20 > > I had done it this way originally since I figured it was best to break > > this up by subsystem. Should I continue with this series as a set of > > patches broken up this way, or is it preferable to combine the pile of > > format changes into fewer patches? >=20 > Here is the approach I would recommend to maximize signal over noise > for the follow up email thread discussions: >=20 > Now that your series is bisectable, you could post a [RFC PATCH v2] > series with the following: >=20 > - Patch 00 introduces the series, points to your git branch implementing > the whole series, > - The first few patches introduce the new type (kino_t) and macro to > do the format string transition. Initially kino_t would typedef to > unsigned long (no changes). > - Followed by patches implementing the type + format string changes for > a few key subsystems. > - The final patch would change kino_t and the format string macro to > 64-bit integers. >=20 That's pretty much the approach the set I have takes. The current set is here: https://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux.git/log/?= h=3Diino-u64 My question was more about whether I should batch some of the changes together. My inclination is that doing it in small, incremental patches is a good thing, but I figured I'd ask before I spam everyone with a 100+ patch series. > Once everyone agree on those core changes, you could proceed to post > patches that change additional subsystems in a subsequent round. >=20 > One more comment: have you tried using Coccinelle to do this kind of > semantic code change ? I've use coccinelle before for this sort of change, but my skills with it are pretty primitive. The problem I saw with using it here is that the main set of changes involved format strings, and that didn't look straightforward to do with coccinelle. The LLM seems to have sorted it out with no trouble though. On a related note, has anyone has taught an LLM how to use Coccinelle. I wonder if it might give it a better tool for its toolbox, since Claude at least seems to mostly use bash, perl or python to make changes across the tree. --=20 Jeff Layton