diff options
author | Darrick J. Wong <darrick.wong@oracle.com> | 2018-10-30 10:41:49 +1100 |
---|---|---|
committer | Dave Chinner <david@fromorbit.com> | 2018-10-30 10:41:49 +1100 |
commit | 42ec3d4c02187a18e27ff94b409ec27234bf2ffd (patch) | |
tree | c9db04db8187c370718a43e6067af0e5aa944500 /fs/ocfs2/refcounttree.h | |
parent | 8dde90bca6fca3736ea20109654bcf6dcf2ecf1d (diff) | |
download | linux-42ec3d4c02187a18e27ff94b409ec27234bf2ffd.tar.bz2 |
vfs: make remap_file_range functions take and return bytes completed
Change the remap_file_range functions to take a number of bytes to
operate upon and return the number of bytes they operated on. This is a
requirement for allowing fs implementations to return short clone/dedupe
results to the user, which will enable us to obey resource limits in a
graceful manner.
A subsequent patch will enable copy_file_range to signal to the
->clone_file_range implementation that it can handle a short length,
which will be returned in the function's return value. For now the
short return is not implemented anywhere so the behavior won't change --
either copy_file_range manages to clone the entire range or it tries an
alternative.
Neither clone ioctl can take advantage of this, alas.
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>
Diffstat (limited to 'fs/ocfs2/refcounttree.h')
-rw-r--r-- | fs/ocfs2/refcounttree.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ocfs2/refcounttree.h b/fs/ocfs2/refcounttree.h index d2c5f526edff..eb65c1d0843c 100644 --- a/fs/ocfs2/refcounttree.h +++ b/fs/ocfs2/refcounttree.h @@ -119,7 +119,7 @@ int ocfs2_reflink_remap_range(struct file *file_in, loff_t pos_in, struct file *file_out, loff_t pos_out, - u64 len, + loff_t len, unsigned int remap_flags); #endif /* OCFS2_REFCOUNTTREE_H */ |