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Diffstat (limited to 'man2/ioctl_fideduperange.2')
| -rw-r--r-- | man2/ioctl_fideduperange.2 | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/man2/ioctl_fideduperange.2 b/man2/ioctl_fideduperange.2 index 117e85d73f..34623cf7b6 100644 --- a/man2/ioctl_fideduperange.2 +++ b/man2/ioctl_fideduperange.2 @@ -181,19 +181,20 @@ and .I src_fd are not on the same mounted filesystem. .SH VERSIONS -This ioctl operation first appeared in Linux 4.5. +Some filesystems may limit the amount of data that can be deduplicated in a +single call. +.SH STANDARDS +Linux. +.SH HISTORY +Linux 4.5. +.PP It was previously known as .B BTRFS_IOC_FILE_EXTENT_SAME and was private to Btrfs. -.SH STANDARDS -This API is Linux-specific. .SH NOTES Because a copy-on-write operation requires the allocation of new storage, the .BR fallocate (2) operation may unshare shared blocks to guarantee that subsequent writes will not fail because of lack of disk space. -.PP -Some filesystems may limit the amount of data that can be deduplicated in a -single call. .SH SEE ALSO .BR ioctl (2) |