Btrfs: do not overwrite error return value in scrub progress ioctl

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If the call to btrfs_scrub_progress() 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_scrub_progress()
returned success.

Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Anand Jain <anand.jain@oracle.com>
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 19:45:13 +00:00 • committed by David Sterba

parent 06fe39ab15

commit 4fa99b008f

1 changed files with 1 additions and 1 deletions

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fs/btrfs/ioctl.c

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