[PATCH v3 2/2] vfs: dedupe should return EPERM if permission is not granted

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Right now we return EINVAL if a process does not have permission to dedupe a
file. This was an oversight on my part. EPERM gives a true description of
the nature of our error, and EINVAL is already used for the case that the
filesystem does not support dedupe.

Signed-off-by: Mark Fasheh <mfasheh@xxxxxxx>
Reviewed-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
Acked-by: David Sterba <dsterba@xxxxxxxx>
---
 fs/read_write.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/read_write.c b/fs/read_write.c
index 71e9077f8bc1..7188982e2733 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -2050,7 +2050,7 @@ int vfs_dedupe_file_range(struct file *file, struct file_dedupe_range *same)
 		if (info->reserved) {
 			info->status = -EINVAL;
 		} else if (!allow_file_dedupe(dst_file)) {
-			info->status = -EINVAL;
+			info->status = -EPERM;
 		} else if (file->f_path.mnt != dst_file->f_path.mnt) {
 			info->status = -EXDEV;
 		} else if (S_ISDIR(dst->i_mode)) {
-- 
2.15.1

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