This series is being spun off the block atomic writes for xfs series at [0]. That series has got too big and also has a dependency on the core block atomic writes support at [1]. The actual forcealign patches are the same in this series, modulo an attempt for a fix in xfs_bunmapi_align() Why forcealign? In some scenarios to may be required to guarantee extent alignment and granularity. For example, for atomic writes, the maximum atomic write unit size would be limited at the extent alignment and granularity, guaranteeing that an atomic write would not span data present in multiple extents. forcealign may be useful as a performance tuning optimization in other scenarios. Early development xfsprogs support is at: https://github.com/johnpgarry/xfsprogs-dev/tree/forcealign_and_atomicwrites_for_v4_xfs_block_atomic_writes Catherine has been working on a formal version of this support, which I need to update to. Baseline: xfs/for-next @ 348a1983cf4c ("xfs: fix unlink vs cluster buffer instantiation race") + https://lore.kernel.org/linux-xfs/20240528171510.3562654-1-john.g.garry@xxxxxxxxxx/ [0] https://lore.kernel.org/linux-xfs/20240607143919.2622319-1-john.g.garry@xxxxxxxxxx/ [1] https://lore.kernel.org/linux-nvme/20240620125359.2684798-1-john.g.garry@xxxxxxxxxx/T/#m4ab84ddd627d95e6e957b62c29bbf815ca6e44e2 Darrick J. Wong (2): xfs: Introduce FORCEALIGN inode flag xfs: Enable file data forcealign feature Dave Chinner (6): xfs: only allow minlen allocations when near ENOSPC xfs: always tail align maxlen allocations xfs: simplify extent allocation alignment xfs: make EOF allocation simpler xfs: introduce forced allocation alignment xfs: align args->minlen for forced allocation alignment John Garry (5): xfs: Do not free EOF blocks for forcealign xfs: Update xfs_inode_alloc_unitsize_fsb() for forcealign xfs: Unmap blocks according to forcealign xfs: Only free full extents for forcealign xfs: Don't revert allocated offset for forcealign fs/xfs/libxfs/xfs_alloc.c | 33 ++-- fs/xfs/libxfs/xfs_alloc.h | 3 +- fs/xfs/libxfs/xfs_bmap.c | 313 +++++++++++++++++++--------------- fs/xfs/libxfs/xfs_format.h | 9 +- fs/xfs/libxfs/xfs_ialloc.c | 12 +- fs/xfs/libxfs/xfs_inode_buf.c | 53 ++++++ fs/xfs/libxfs/xfs_inode_buf.h | 3 + fs/xfs/libxfs/xfs_sb.c | 2 + fs/xfs/xfs_bmap_util.c | 14 +- fs/xfs/xfs_inode.c | 15 ++ fs/xfs/xfs_inode.h | 23 +++ fs/xfs/xfs_ioctl.c | 47 ++++- fs/xfs/xfs_mount.h | 2 + fs/xfs/xfs_reflink.h | 10 -- fs/xfs/xfs_super.c | 4 + fs/xfs/xfs_trace.h | 8 +- include/uapi/linux/fs.h | 2 + 17 files changed, 371 insertions(+), 182 deletions(-) -- 2.31.1
