GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-06-27 09:02:06 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

vfs: plumb remap flags through the vfs clone functions

Browse source 
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>
Signed-off-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Darrick J. Wong 2018-10-30 10:41:56 +11:00 • committed by Dave Chinner
parent 42ec3d4c02
commit 452ce65951
6 changed files with 17 additions and 12 deletions
Download patch file Download diff file Expand all files Collapse all files

13
fs/read_write.c
View file

@ -1848,12 +1848,15 @@ 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))
@ -1884,7 +1887,7 @@ 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;
@ -1895,12 +1898,14 @@ 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;