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ioctl_fideduperange.2: Add VERSIONS section 

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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Michael Kerrisk 2016-06-08 12:31:58 +02:00
parent 2db75216ad
commit 5711c5f7aa
1 changed files with 5 additions and 3 deletions
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8
man2/ioctl_fideduperange.2
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@ -156,11 +156,13 @@ Swap files cannot share storage.
.B EOPNOTSUPP
This can appear if the filesystem does not support deduplicating either file
descriptor.
.SH CONFORMING TO
This API is Linux-specific.
This ioctl was previously known as
.SH VERSIONS
This ioctl operation first appeared in Linux 4.5.
It was previously known as
.B BTRFS_IOC_FILE_EXTENT_SAME
and was private to Btrfs.
.SH CONFORMING TO
This API is Linux-specific.
.SH NOTES
Because a copy-on-write operation requires the allocation of new storage, the
.BR fallocate (2)