[PATCH 87/87] fs: move i_blocks up a few places in struct inode
Jeff Layton <[email protected]>
| Newsgroups | gmane.linux.kernel.bpf,gmane.linux.file-systems,gmane.linux.kernel,gmane.linux.kernel.mm,gmane.linux.ports.ppc64.devel,gmane.linux.drivers.platform.x86.devel,gmane.linux.drivers.rdma,gmane.linux.serial,gmane.linux.usb.general,gmane.linux.kernel.autofs,gmane.comp.file-systems.btrfs,gmane.comp.file-systems.ceph.devel,gmane.comp.file-systems.coda.general,gmane.linux.kernel.efi,gmane.comp.file-systems.ext4,gmane.linux.file-systems.f2fs,gmane.linux.uml.devel,gmane.linux.drivers.mtd,gmane.linux.nfs,gmane.comp.file-systems.nilfs.user,gmane.linux.file-systems.ntfs.devel,gmane.linux.hardware.karma.devel,gmane.linux.file-systems.union,gmane.comp.file-systems.reiserfs.general,gmane.linux.kernel.cifs,gmane.network.samba.internals,gmane.linux.network,gmane.comp.security.apparmor,gmane.linux.kernel.lsm |
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| Message-ID | <[email protected]> |
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 <[email protected]> --- 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; -- 2.41.0