From: SelvaKumar S <[email protected]> Make iov_iter_truncate to report whether it actually truncated. This helps callers which want to process the iov_iter in its entirety.
Signed-off-by: SelvaKumar S <[email protected]> Signed-off-by: Kanchan Joshi <[email protected]> Signed-off-by: Nitesh Shetty <[email protected]> Signed-off-by: Javier Gonzalez <[email protected]> --- include/linux/uio.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/include/linux/uio.h b/include/linux/uio.h index 9576fd8..c681a60 100644 --- a/include/linux/uio.h +++ b/include/linux/uio.h @@ -241,7 +241,7 @@ static inline size_t iov_iter_count(const struct iov_iter *i) * greater than the amount of data in iov_iter is fine - it'll just do * nothing in that case. */ -static inline void iov_iter_truncate(struct iov_iter *i, u64 count) +static inline bool iov_iter_truncate(struct iov_iter *i, u64 count) { /* * count doesn't have to fit in size_t - comparison extends both @@ -249,8 +249,11 @@ static inline void iov_iter_truncate(struct iov_iter *i, u64 count) * conversion in assignement is by definition greater than all * values of size_t, including old i->count. */ - if (i->count > count) + if (i->count > count) { i->count = count; + return true; + } + return false; } /* -- 2.7.4
