From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Subject: [PATCH 14/25] vfs: plumb RFR_* remap flags through the vfs clone functions From: "Darrick J. Wong" To: david@fromorbit.com, darrick.wong@oracle.com Cc: sandeen@redhat.com, linux-nfs@vger.kernel.org, linux-cifs@vger.kernel.org, Amir Goldstein , linux-unionfs@vger.kernel.org, linux-xfs@vger.kernel.org, linux-mm@kvack.org, linux-btrfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, ocfs2-devel@oss.oracle.com Date: Wed, 10 Oct 2018 21:14:05 -0700 Message-ID: <153923124495.5546.2993415758308396845.stgit@magnolia> In-Reply-To: <153923113649.5546.9840926895953408273.stgit@magnolia> References: <153923113649.5546.9840926895953408273.stgit@magnolia> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: From: Darrick J. Wong Plumb a remap_flags argument through the {do,vfs}_clone_file_range functions so that clone can take advantage of it. Signed-off-by: Darrick J. Wong Reviewed-by: Amir Goldstein --- fs/ioctl.c | 2 +- fs/nfsd/vfs.c | 2 +- fs/overlayfs/copy_up.c | 2 +- fs/overlayfs/file.c | 6 +++--- fs/read_write.c | 13 +++++++++---- include/linux/fs.h | 4 ++-- 6 files changed, 17 insertions(+), 12 deletions(-) diff --git a/fs/ioctl.c b/fs/ioctl.c index 72537b68c272..505275ec5596 100644 --- a/fs/ioctl.c +++ b/fs/ioctl.c @@ -232,7 +232,7 @@ static long ioctl_file_clone(struct file *dst_file, unsigned long srcfd, if (src_file.file->f_path.mnt != dst_file->f_path.mnt) goto fdput; cloned = vfs_clone_file_range(src_file.file, off, dst_file, destoff, - olen); + olen, 0); if (cloned < 0) ret = cloned; else if (olen && cloned != olen) diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index ac6cb6101cbe..726fc5b2b27a 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -543,7 +543,7 @@ __be32 nfsd4_clone_file_range(struct file *src, u64 src_pos, struct file *dst, { loff_t cloned; - cloned = vfs_clone_file_range(src, src_pos, dst, dst_pos, count); + cloned = vfs_clone_file_range(src, src_pos, dst, dst_pos, count, 0); if (count && cloned != count) cloned = -EINVAL; return nfserrno(cloned < 0 ? cloned : 0); diff --git a/fs/overlayfs/copy_up.c b/fs/overlayfs/copy_up.c index 8750b7235516..5f82fece64a0 100644 --- a/fs/overlayfs/copy_up.c +++ b/fs/overlayfs/copy_up.c @@ -142,7 +142,7 @@ static int ovl_copy_up_data(struct path *old, struct path *new, loff_t len) } /* Try to use clone_file_range to clone up within the same fs */ - cloned = do_clone_file_range(old_file, 0, new_file, 0, len); + cloned = do_clone_file_range(old_file, 0, new_file, 0, len, 0); if (cloned == len) goto out; /* Couldn't clone, so now we try to copy the data */ diff --git a/fs/overlayfs/file.c b/fs/overlayfs/file.c index 177731b21bad..e5cc17281d0b 100644 --- a/fs/overlayfs/file.c +++ b/fs/overlayfs/file.c @@ -462,7 +462,7 @@ static loff_t ovl_copyfile(struct file *file_in, loff_t pos_in, case OVL_CLONE: ret = vfs_clone_file_range(real_in.file, pos_in, - real_out.file, pos_out, len); + real_out.file, pos_out, len, flags); break; case OVL_DEDUPE: @@ -512,8 +512,8 @@ static loff_t ovl_remap_file_range(struct file *file_in, loff_t pos_in, !ovl_inode_upper(file_inode(file_out)))) return -EPERM; - return ovl_copyfile(file_in, pos_in, file_out, pos_out, len, 0, - op); + return ovl_copyfile(file_in, pos_in, file_out, pos_out, len, + remap_flags, op); } const struct file_operations ovl_file_operations = { diff --git a/fs/read_write.c b/fs/read_write.c index 461acd5fcc4a..b3f8b4a2bdfc 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -1842,12 +1842,15 @@ int generic_remap_file_range_touch(struct file *file, unsigned int remap_flags) EXPORT_SYMBOL(generic_remap_file_range_touch); loff_t do_clone_file_range(struct file *file_in, loff_t pos_in, - struct file *file_out, loff_t pos_out, loff_t len) + struct file *file_out, loff_t pos_out, + loff_t len, unsigned int remap_flags) { struct inode *inode_in = file_inode(file_in); struct inode *inode_out = file_inode(file_out); loff_t ret; + WARN_ON_ONCE(remap_flags); + if (S_ISDIR(inode_in->i_mode) || S_ISDIR(inode_out->i_mode)) return -EISDIR; if (!S_ISREG(inode_in->i_mode) || !S_ISREG(inode_out->i_mode)) @@ -1878,7 +1881,7 @@ loff_t do_clone_file_range(struct file *file_in, loff_t pos_in, return ret; ret = file_in->f_op->remap_file_range(file_in, pos_in, - file_out, pos_out, len, 0); + file_out, pos_out, len, remap_flags); if (ret < 0) return ret; @@ -1889,12 +1892,14 @@ loff_t do_clone_file_range(struct file *file_in, loff_t pos_in, EXPORT_SYMBOL(do_clone_file_range); loff_t vfs_clone_file_range(struct file *file_in, loff_t pos_in, - struct file *file_out, loff_t pos_out, loff_t len) + struct file *file_out, loff_t pos_out, + loff_t len, unsigned int remap_flags) { loff_t ret; file_start_write(file_out); - ret = do_clone_file_range(file_in, pos_in, file_out, pos_out, len); + ret = do_clone_file_range(file_in, pos_in, file_out, pos_out, len, + remap_flags); file_end_write(file_out); return ret; diff --git a/include/linux/fs.h b/include/linux/fs.h index 035d8a88f633..4acda4809027 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1852,10 +1852,10 @@ extern int generic_remap_file_range_touch(struct file *file, unsigned int remap_flags); extern loff_t do_clone_file_range(struct file *file_in, loff_t pos_in, struct file *file_out, loff_t pos_out, - loff_t len); + loff_t len, unsigned int remap_flags); extern loff_t vfs_clone_file_range(struct file *file_in, loff_t pos_in, struct file *file_out, loff_t pos_out, - loff_t len); + loff_t len, unsigned int remap_flags); extern int vfs_dedupe_file_range_compare(struct inode *src, loff_t srcoff, struct inode *dest, loff_t destoff, loff_t len, bool *is_same);