linux-fsdevel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
* [PATCH v3 0/4] Enable holes in copy_file_range()
@ 2018-05-14 14:56 Goldwyn Rodrigues
  2018-05-14 14:56 ` [PATCH 1/4] copy_file_range: refactor vfs_copy_file_range Goldwyn Rodrigues
                   ` (3 more replies)
  0 siblings, 4 replies; 5+ messages in thread
From: Goldwyn Rodrigues @ 2018-05-14 14:56 UTC (permalink / raw)
  To: linux-fsdevel; +Cc: hch, linux-unionfs, david, amir73il

If copy_file_range performs a copy using splice, it converts holes
to zeros. This effort primarily changes this behavior to create
holes when it is possible. 

Even if copy_file_range() or clone_file_range() does not work for different
mounted filesystems, We should be able to splice files if they do not
belong the same super_block.

Testing:
I ran fstests, especially generic/43[0-4] and the overlayfs tests.
Besides also created new tests, however, it is waiitng on xfs_io fix
for copy_range. I shall post the new test which deals with holes shortly.

Changes since v2:
- Added size check so it does not punch a zero size hole

Changes since v1:
- Fixed bug when hole/data offset is farther than len
- [Amir] Refactor flags parameter

Changes since v0:
- [Amir] Carved out do_copy_file_range() which can be used by overlayfs

-- 
Goldwyn

^ permalink raw reply	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2018-05-14 14:56 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-05-14 14:56 [PATCH v3 0/4] Enable holes in copy_file_range() Goldwyn Rodrigues
2018-05-14 14:56 ` [PATCH 1/4] copy_file_range: refactor vfs_copy_file_range Goldwyn Rodrigues
2018-05-14 14:56 ` [PATCH 2/4] copy_file_range: Perform splice if in/out SB are not same Goldwyn Rodrigues
2018-05-14 14:56 ` [PATCH 3/4] copy_file_range: splice with holes Goldwyn Rodrigues
2018-05-14 14:56 ` [PATCH 4/4] ovl: Use do_copy_file_range() in copy_up_data() Goldwyn Rodrigues

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).