Btrfs: do not overwrite error return value in the get device stats ioctl

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If the call to btrfs_get_dev_stats() failed we would overwrite the error
returned to user space with -EFAULT if the call to copy_to_user() failed
as well. Fix that by calling copy_to_user() only if btrfs_get_dev_stats()
returned success.

Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Filipe Manana 2018-12-14 19:45:22 +00:00 • committed by David Sterba

parent 4fa99b008f

commit eee9957754

1 changed files with 1 additions and 1 deletions

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fs/btrfs/ioctl.c

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