Messages in this thread Patch in this message | | | From | Luis Henriques <> | Subject | [PATCH] copy_file_range.2: Kernel v5.12 updates | Date | Wed, 24 Feb 2021 14:23:07 +0000 |
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Update man-page with recent changes to this syscall.
Signed-off-by: Luis Henriques <lhenriques@suse.de> --- Hi!
Here's a suggestion for fixing the manpage for copy_file_range(). Note that I've assumed the fix will hit 5.12.
man2/copy_file_range.2 | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/man2/copy_file_range.2 b/man2/copy_file_range.2 index 611a39b8026b..b0fd85e2631e 100644 --- a/man2/copy_file_range.2 +++ b/man2/copy_file_range.2 @@ -169,6 +169,9 @@ Out of memory. .B ENOSPC There is not enough space on the target filesystem to complete the copy. .TP +.B EOPNOTSUPP +The filesystem does not support this operation. +.TP .B EOVERFLOW The requested source or destination range is too large to represent in the specified data types. @@ -187,7 +190,7 @@ refers to an active swap file. .B EXDEV The files referred to by .IR fd_in " and " fd_out -are not on the same mounted filesystem (pre Linux 5.3). +are not on the same mounted filesystem (pre Linux 5.3 and post Linux 5.12). .SH VERSIONS The .BR copy_file_range () @@ -202,6 +205,11 @@ Applications should target the behaviour and requirements of 5.3 kernels. .PP First support for cross-filesystem copies was introduced in Linux 5.3. Older kernels will return -EXDEV when cross-filesystem copies are attempted. +.PP +After Linux 5.12, support for copies between different filesystems was dropped. +However, individual filesystems may still provide +.BR copy_file_range () +implementations that allow copies across different devices. .SH CONFORMING TO The .BR copy_file_range ()
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