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Hallyn" , Stephen Smalley , Eric Paris Date: Thu, 28 Sep 2023 07:05:54 -0400 Message-ID: <20230928110554.34758-3-jlayton@kernel.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230928110554.34758-1-jlayton@kernel.org> References: <20230928110554.34758-1-jlayton@kernel.org> MIME-Version: 1.0 X-Headers-End: 1qlor1-009nfp-HL Subject: [f2fs-dev] [PATCH 87/87] fs: move i_blocks up a few places in struct inode X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: jfs-discussion@lists.sourceforge.net, linux-efi@vger.kernel.org, platform-driver-x86@vger.kernel.org, gfs2@lists.linux.dev, linux-mm@kvack.org, linux-mtd@lists.infradead.org, linux-hardening@vger.kernel.org, linux-afs@lists.infradead.org, linux-s390@vger.kernel.org, linux-nilfs@vger.kernel.org, linux-rdma@vger.kernel.org, linux-unionfs@vger.kernel.org, codalist@coda.cs.cmu.edu, linux-serial@vger.kernel.org, linux-ext4@vger.kernel.org, devel@lists.orangefs.org, linux-trace-kernel@vger.kernel.org, linux-cifs@vger.kernel.org, selinux@vger.kernel.org, apparmor@lists.ubuntu.com, autofs@vger.kernel.org, linux-um@lists.infradead.org, reiserfs-devel@vger.kernel.org, ocfs2-devel@lists.linux.dev, ceph-devel@vger.kernel.org, linux-nfs@vger.kernel.org, linux-ntfs-dev@lists.sourceforge.net, linuxppc-dev@lists.ozlabs.org, v9fs@lists.linux.dev, linux-usb@vger.kernel.org, samba-technical@lists.samba.org, linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-xfs@vger.kernel.org, linux-security-module@vger.kernel.org, netdev@vger.kernel.org, linux-fsdevel@vger.kernel.org, bpf@vger.kernel.org, ntfs3@lists.linux.dev, linux-erofs@lists.ozlabs.org, linux-karma-devel@lists.sourceforge.net, linux-btrfs@vger.kernel.org Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net The recent change to use discrete integers instead of struct timespec64 in struct inode shaved 8 bytes off of it, but it also moves the i_lock into the previous cacheline, away from the fields that it protects. Move i_blocks up above the i_lock, which moves the new 4 byte hole to just after the timestamps, without changing the size of the structure. Signed-off-by: Jeff Layton --- include/linux/fs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/fs.h b/include/linux/fs.h index de902ff2938b..3e0fe0f52e7c 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -677,11 +677,11 @@ struct inode { u32 i_atime_nsec; u32 i_mtime_nsec; u32 i_ctime_nsec; + blkcnt_t i_blocks; spinlock_t i_lock; /* i_blocks, i_bytes, maybe i_size */ unsigned short i_bytes; u8 i_blkbits; u8 i_write_hint; - blkcnt_t i_blocks; #ifdef __NEED_I_SIZE_ORDERED seqcount_t i_size_seqcount;