From: Taotao Chen <chentaotao@xxxxxxxxxxxxxx> This patch series refactors the address_space_operations write_begin() and write_end() callbacks to take struct kiocb * as their first argument, allowing IOCB flags such as IOCB_DONTCACHE to propagate to filesystem’s buffered write path. Ext4 is updated to implement handling of the IOCB_DONTCACHE flag in its buffered write path and to advertise 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(), using a constructed synchronous kiocb. Another i915 patch replaces a manual write loop with kernel_write() in shmem object creation. Tested with ext4 and i915 GEM workloads. Changes since v1: - ext4 uses kiocb->ki_flags directly instead of fsdata. - write_begin/write_end interface is changed to take struct kiocb * instead of struct file *. - i915 shmem_pwrite refactored to use write_iter() directly instead of write_begin/write_end. - i915 GEM shmem object creation replaced manual write loop with kernel_write(). 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 * ext4: handle IOCB_DONTCACHE in buffered write path ext4: declare support for FOP_DONTCACHE Documentation/filesystems/locking.rst | 4 +- Documentation/filesystems/vfs.rst | 4 +- block/fops.c | 6 +- drivers/gpu/drm/i915/gem/i915_gem_shmem.c | 112 ++++++---------------- fs/adfs/inode.c | 4 +- fs/affs/file.c | 12 +-- fs/bcachefs/fs-io-buffered.c | 4 +- fs/bcachefs/fs-io-buffered.h | 4 +- fs/bfs/file.c | 2 +- fs/buffer.c | 18 ++-- fs/ceph/addr.c | 6 +- fs/ecryptfs/mmap.c | 10 +- fs/exfat/file.c | 14 ++- fs/exfat/inode.c | 6 +- fs/ext2/inode.c | 6 +- fs/ext4/file.c | 3 +- fs/ext4/inode.c | 25 ++--- fs/f2fs/data.c | 4 +- fs/fat/inode.c | 8 +- fs/fuse/file.c | 5 +- fs/hfs/hfs_fs.h | 2 +- fs/hfs/inode.c | 4 +- fs/hfsplus/hfsplus_fs.h | 2 +- fs/hfsplus/inode.c | 4 +- fs/hostfs/hostfs_kern.c | 6 +- fs/hpfs/file.c | 8 +- fs/hugetlbfs/inode.c | 4 +- fs/jffs2/file.c | 8 +- fs/jfs/inode.c | 6 +- fs/libfs.c | 4 +- fs/minix/inode.c | 2 +- fs/nfs/file.c | 6 +- fs/nilfs2/inode.c | 6 +- fs/ntfs3/file.c | 7 +- fs/ntfs3/inode.c | 6 +- fs/ntfs3/ntfs_fs.h | 4 +- fs/ocfs2/aops.c | 4 +- fs/omfs/file.c | 2 +- fs/orangefs/inode.c | 6 +- fs/ubifs/file.c | 4 +- fs/udf/inode.c | 9 +- fs/ufs/inode.c | 6 +- fs/vboxsf/file.c | 4 +- include/linux/buffer_head.h | 4 +- include/linux/fs.h | 6 +- mm/filemap.c | 4 +- mm/shmem.c | 4 +- 47 files changed, 176 insertions(+), 213 deletions(-) -- 2.34.1
