btrfs: allow cross-subvolume file clone

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Lift the EXDEV condition and allow different root trees for files being
cloned, then pass source inode's root when searching for extents.
Cloning is not allowed to cross vfsmounts, ie. when two subvolumes from
one filesystem are mounted separately.

Signed-off-by: David Sterba <dsterba@suse.cz>

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David Sterba 2011-08-01 18:11:57 +02:00 • committed by Alexander Block

parent 28a33cbc24

commit 362a20c5e2

1 changed files with 8 additions and 3 deletions

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fs/btrfs/ioctl.c

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