Copy system calls came up during Plumbers a while ago, mostly because several filesystems (including NFS and XFS) are currently working on copy acceleration implementations. We haven't heard from Zach Brown in a while, so I volunteered to push his patches upstream so individual filesystems don't need to keep writing their own ioctls. This posting removes the COPY_FR_REFLINK flag. Patch 3 still adds btrfs support for copy_file_range() as a reflink, so if this behavior is undesireable then the patch can be dropped. Changes in v7: - Remove COPY_FR_REFLINK flag. - Fix build warning on ARM devices. - Meniton sparse file expansion in the man page. Anna Schumaker (1): vfs: Add vfs_copy_file_range() support for pagecache copies Zach Brown (3): vfs: add copy_file_range syscall and vfs helper x86: add sys_copy_file_range to syscall tables btrfs: add .copy_file_range file operation arch/arm/include/uapi/asm/unistd.h | 1 + arch/x86/entry/syscalls/syscall_32.tbl | 1 + arch/x86/entry/syscalls/syscall_64.tbl | 1 + fs/btrfs/ctree.h | 3 + fs/btrfs/file.c | 1 + fs/btrfs/ioctl.c | 91 ++++++++++++---------- fs/read_write.c | 133 +++++++++++++++++++++++++++++++++ include/linux/fs.h | 3 + include/linux/syscalls.h | 3 + include/uapi/asm-generic/unistd.h | 4 +- kernel/sys_ni.c | 1 + 11 files changed, 202 insertions(+), 40 deletions(-) -- 2.6.2 -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
