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xfs: don't cap maximum dedupe request length

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commit 1bb33a9870 upstream.

After various discussions on linux-fsdevel, it has been decided that it
is not necessary to cap the length of a dedupe request, and that
correctly-written userspace client programs will be able to absorb the
change.  Therefore, remove the length clamping behavior.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Darrick J. Wong
2017-01-09 16:38:57 +01:00
committed by Greg Kroah-Hartman
parent f8b20705a3
commit c00203386d
1 changed files with 0 additions and 9 deletions
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9
fs/xfs/xfs_file.c
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@@ -939,7 +939,6 @@ xfs_file_clone_range(
len, false);
}
#define XFS_MAX_DEDUPE_LEN (16 * 1024 * 1024)
STATIC ssize_t
xfs_file_dedupe_range(
struct file *src_file,
@@ -950,14 +949,6 @@ xfs_file_dedupe_range(
{
int error;
/*
* Limit the total length we will dedupe for each operation.
* This is intended to bound the total time spent in this
* ioctl to something sane.
*/
if (len > XFS_MAX_DEDUPE_LEN)
len = XFS_MAX_DEDUPE_LEN;
error = xfs_reflink_remap_range(src_file, loff, dst_file, dst_loff,
len, true);
if (error)