Thread (15 messages) 15 messages, 4 authors, 2015-09-28
STALE3953d REVIEWED: 4 (4M)
Revisions (3)
  1. v3 current
  2. v5 [diff vs current]
  3. v8 [diff vs current]

[PATCH v3 5/9] vfs: Copy shouldn't forbid ranges inside the same file

From: Anna Schumaker <hidden>
Date: 2015-09-25 20:48:11
Also in: linux-btrfs, linux-fsdevel, linux-nfs
Subsystem: filesystems (vfs and infrastructure), the rest · Maintainers: Alexander Viro, Christian Brauner, Linus Torvalds

This is perfectly valid for BTRFS and XFS, so let's leave this up to
filesystems to check.

Signed-off-by: Anna Schumaker <redacted>
Reviewed-by: David Sterba <dsterba@suse.com>
---
 fs/read_write.c | 4 ----
 1 file changed, 4 deletions(-)
diff --git a/fs/read_write.c b/fs/read_write.c
index f3d6c48..8e7cb33 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -1371,10 +1371,6 @@ ssize_t vfs_copy_file_range(struct file *file_in, loff_t pos_in,
 	    file_in->f_path.mnt != file_out->f_path.mnt)
 		return -EXDEV;
 
-	/* forbid ranges in the same file */
-	if (inode_in == inode_out)
-		return -EINVAL;
-
 	if (len == 0)
 		return 0;
 
-- 
2.5.3
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