From: "Darrick J. Wong" <darrick.wong@oracle.com>
To: david@fromorbit.com, darrick.wong@oracle.com
Cc: sandeen@redhat.com, linux-nfs@vger.kernel.org,
linux-cifs@vger.kernel.org, Amir Goldstein <amir73il@gmail.com>,
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
Subject: [PATCH 15/26] vfs: plumb remap flags through the vfs clone functions
Date: Mon, 15 Oct 2018 20:19:40 -0700 [thread overview]
Message-ID: <153965998059.3607.7952535159459274693.stgit@magnolia> (raw)
In-Reply-To: <153965939489.1256.7400115244528045860.stgit@magnolia>
From: Darrick J. Wong <darrick.wong@oracle.com>
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 <darrick.wong@oracle.com>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
---
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 6c3fec6168e9..0393815c8971 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 906e78be5001..791b406e8264 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -1857,12 +1857,15 @@ int generic_remap_file_range_prep(struct file *file_in, loff_t pos_in,
EXPORT_SYMBOL(generic_remap_file_range_prep);
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))
@@ -1893,7 +1896,7 @@ 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;
@@ -1904,12 +1907,14 @@ 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 f1d082af34d0..bc353a5224a4 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1843,10 +1843,10 @@ extern int generic_remap_file_range_prep(struct file *file_in, loff_t pos_in,
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);
next prev parent reply other threads:[~2018-10-16 3:19 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-16 3:09 [PATCH v5 00/26] fs: fixes for serious clone/dedupe problems Darrick J. Wong
2018-10-16 3:10 ` [PATCH 01/26] xfs: add a per-xfs trace_printk macro Darrick J. Wong
2018-10-16 3:10 ` [PATCH 02/26] vfs: vfs_clone_file_prep_inodes should return EINVAL for a clone from beyond EOF Darrick J. Wong
2018-10-16 3:10 ` [PATCH 03/26] vfs: check file ranges before cloning files Darrick J. Wong
2018-10-16 3:10 ` [PATCH 04/26] vfs: exit early from zero length remap operations Darrick J. Wong
2018-10-17 8:26 ` Christoph Hellwig
2018-10-16 3:10 ` [PATCH 05/26] vfs: strengthen checking of file range inputs to generic_remap_checks Darrick J. Wong
2018-10-16 3:10 ` [PATCH 06/26] vfs: avoid problematic remapping requests into partial EOF block Darrick J. Wong
2018-10-16 3:10 ` [PATCH 07/26] vfs: skip zero-length dedupe requests Darrick J. Wong
2018-10-16 3:10 ` [PATCH 08/26] vfs: rename vfs_clone_file_prep to be more descriptive Darrick J. Wong
2018-10-16 3:10 ` [PATCH 09/26] vfs: rename clone_verify_area to remap_verify_area Darrick J. Wong
2018-10-16 3:11 ` [PATCH 10/26] vfs: combine the clone and dedupe into a single remap_file_range Darrick J. Wong
2018-10-17 8:28 ` Christoph Hellwig
2018-10-16 3:11 ` [PATCH 11/26] vfs: pass remap flags to generic_remap_file_range_prep Darrick J. Wong
2018-10-17 8:28 ` Christoph Hellwig
2018-10-16 3:11 ` [PATCH 12/26] vfs: pass remap flags to generic_remap_checks Darrick J. Wong
2018-10-17 8:29 ` Christoph Hellwig
2018-10-16 3:19 ` [PATCH 13/26] vfs: create generic_remap_file_range_touch to update inode metadata Darrick J. Wong
2018-10-17 8:33 ` Christoph Hellwig
2018-10-16 3:19 ` [PATCH 14/26] vfs: make remap_file_range functions take and return bytes completed Darrick J. Wong
2018-10-16 3:19 ` Darrick J. Wong [this message]
2018-10-16 3:19 ` [PATCH 16/26] vfs: plumb remap flags through the vfs dedupe functions Darrick J. Wong
2018-10-16 3:19 ` [PATCH 17/26] vfs: enable remap callers that can handle short operations Darrick J. Wong
2018-10-17 8:36 ` Christoph Hellwig
2018-10-17 16:35 ` Darrick J. Wong
2018-10-16 3:20 ` [PATCH 18/26] vfs: hide file range comparison function Darrick J. Wong
2018-10-16 3:20 ` [PATCH 19/26] vfs: clean up generic_remap_file_range_prep return value Darrick J. Wong
2018-10-17 8:37 ` Christoph Hellwig
2018-10-16 3:20 ` [PATCH 20/26] ocfs2: truncate page cache for clone destination file before remapping Darrick J. Wong
2018-10-16 3:20 ` [PATCH 21/26] ocfs2: fix pagecache truncation prior to reflink Darrick J. Wong
2018-10-16 3:20 ` [PATCH 22/26] ocfs2: support partial clone range and dedupe range Darrick J. Wong
2018-10-16 3:20 ` [PATCH 23/26] ocfs2: remove ocfs2_reflink_remap_range Darrick J. Wong
2018-10-16 3:20 ` [PATCH 24/26] xfs: fix pagecache truncation prior to reflink Darrick J. Wong
2018-10-17 8:37 ` Christoph Hellwig
2018-10-16 3:20 ` [PATCH 25/26] xfs: support returning partial reflink results Darrick J. Wong
2018-10-17 8:40 ` Christoph Hellwig
2018-10-17 16:40 ` Darrick J. Wong
2018-10-16 3:21 ` [PATCH 26/26] xfs: remove redundant remap partial EOF block checks Darrick J. Wong
2018-10-17 8:40 ` Christoph Hellwig
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