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Btrfs: do not overwrite scrub error with fault error in scrub ioctl
authorFilipe Manana <fdmanana@suse.com>
Fri, 14 Dec 2018 19:50:17 +0000 (19:50 +0000)
committerDavid Sterba <dsterba@suse.com>
Mon, 25 Feb 2019 13:13:15 +0000 (14:13 +0100)
commit06fe39ab15a6a47d4979460fcc17d33b1d72ccf9
tree794a4d4ec05e118851d6eee5dff6b743deb96e14tree | snapshot
parentbc9a8bf79cb049eb3af26d53e6ca96dd6a881358commit | diff
Btrfs: do not overwrite scrub error with fault error in scrub ioctl

If scrub returned an error and then the copy_to_user() call did not
succeed, we would overwrite the error returned by scrub with -EFAULT.
Fix that by calling copy_to_user() only if btrfs_scrub_dev() returned
success.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
fs/btrfs/ioctl.c diff | blob | blame | history
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