From: Taotao Chen <chentao...@didiglobal.com> This patch series refactors the address_space_operations write_begin() and write_end() callbacks to take const struct kiocb * as their first argument, allowing IOCB flags such as IOCB_DONTCACHE to propagate to the filesystem's buffered I/O path.
Ext4 is updated to implement handling of the IOCB_DONTCACHE flag and advertises support via the FOP_DONTCACHE file operation flag. Additionally, the i915 driver's shmem write paths are updated to bypass the legacy write_begin/write_end interface in favor of directly calling write_iter() with a constructed synchronous kiocb. Another i915 change replaces a manual write loop with kernel_write() during GEM shmem object creation. Tested with ext4 and i915 GEM workloads. This patch series is based on the vfs-6.17.misc branch. The kernel test robot reported issues in previous versions, which are fixed in this updated patchset. Reported-by: kernel test robot <l...@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202507142128.zr5stnyh-...@intel.com/ Reported-by: kernel test robot <l...@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202507142040.wppyox1s-...@intel.com/ Changes since v5: - Patch 2/5: Fix build errors in i915_gem_shmem.c by adding #include <linux/uio.h> to define iov_iter and related symbols. - Patch 3/5: Fix ubifs_write_end() by adding const to the argument to match the updated write_end() interface. Taotao Chen (5): drm/i915: Use kernel_write() in shmem object create drm/i915: Refactor shmem_pwrite() to use kiocb and write_iter fs: change write_begin/write_end interface to take struct kiocb * mm/pagemap: add write_begin_get_folio() helper function ext4: support uncached buffered I/O Documentation/filesystems/locking.rst | 4 +- Documentation/filesystems/vfs.rst | 6 +- block/fops.c | 13 ++- drivers/gpu/drm/i915/gem/i915_gem_shmem.c | 115 ++++++---------------- fs/adfs/inode.c | 9 +- fs/affs/file.c | 26 ++--- fs/bcachefs/fs-io-buffered.c | 4 +- fs/bcachefs/fs-io-buffered.h | 4 +- fs/bfs/file.c | 7 +- fs/buffer.c | 26 ++--- fs/ceph/addr.c | 10 +- fs/ecryptfs/mmap.c | 10 +- fs/exfat/file.c | 11 +-- fs/exfat/inode.c | 16 +-- fs/ext2/inode.c | 11 ++- fs/ext4/file.c | 3 +- fs/ext4/inode.c | 30 +++--- fs/f2fs/data.c | 8 +- fs/fat/inode.c | 18 ++-- fs/fuse/file.c | 14 ++- fs/hfs/hfs_fs.h | 2 +- fs/hfs/inode.c | 4 +- fs/hfsplus/hfsplus_fs.h | 6 +- fs/hfsplus/inode.c | 8 +- fs/hostfs/hostfs_kern.c | 8 +- fs/hpfs/file.c | 18 ++-- fs/hugetlbfs/inode.c | 9 +- fs/jffs2/file.c | 28 +++--- fs/jfs/inode.c | 16 +-- fs/libfs.c | 11 ++- fs/minix/inode.c | 7 +- fs/nfs/file.c | 8 +- fs/nilfs2/inode.c | 8 +- fs/ntfs3/file.c | 4 +- fs/ntfs3/inode.c | 7 +- fs/ntfs3/ntfs_fs.h | 10 +- fs/ocfs2/aops.c | 6 +- fs/omfs/file.c | 7 +- fs/orangefs/inode.c | 16 +-- fs/ubifs/file.c | 8 +- fs/udf/inode.c | 11 ++- fs/ufs/inode.c | 16 +-- fs/vboxsf/file.c | 5 +- include/linux/buffer_head.h | 4 +- include/linux/fs.h | 11 ++- include/linux/pagemap.h | 27 +++++ mm/filemap.c | 4 +- mm/shmem.c | 12 +-- 48 files changed, 330 insertions(+), 296 deletions(-) -- 2.34.1
