From: Xiaoli Feng fengxiaoli0714@gmail.com
[ Upstream commit ce96e888fe48ecfa868c9a39adc03292c78a80ff ]
dedupe_file_range operations is combiled into remap_file_range. But in nfs42_remap_file_range, it's skiped for dedupe operations. Before this patch: # dd if=/dev/zero of=nfs/file bs=1M count=1 # xfs_io -c "dedupe nfs/file 4k 64k 4k" nfs/file XFS_IOC_FILE_EXTENT_SAME: Invalid argument After this patch: # dd if=/dev/zero of=nfs/file bs=1M count=1 # xfs_io -c "dedupe nfs/file 4k 64k 4k" nfs/file deduped 4096/4096 bytes at offset 65536 4 KiB, 1 ops; 0.0046 sec (865.988 KiB/sec and 216.4971 ops/sec)
Signed-off-by: Xiaoli Feng fengxiaoli0714@gmail.com Signed-off-by: Anna Schumaker Anna.Schumaker@Netapp.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/nfs/nfs4file.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/nfs/nfs4file.c b/fs/nfs/nfs4file.c index 00d17198ee12a..f10b660805fc4 100644 --- a/fs/nfs/nfs4file.c +++ b/fs/nfs/nfs4file.c @@ -187,7 +187,7 @@ static loff_t nfs42_remap_file_range(struct file *src_file, loff_t src_off, bool same_inode = false; int ret;
- if (remap_flags & ~REMAP_FILE_ADVISORY) + if (remap_flags & ~(REMAP_FILE_DEDUP | REMAP_FILE_ADVISORY)) return -EINVAL;
/* check alignment w.r.t. clone_blksize */