Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 777eda2c authored by Al Viro's avatar Al Viro
Browse files

new helper: iter_is_iovec() 



Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent b1bc6d7f

include/linux/uio.h

+5 −0
Original line number Diff line number Diff line
@@ -101,6 +101,11 @@ static inline size_t iov_iter_count(struct iov_iter *i) 
	return i->count;

}



static inline bool iter_is_iovec(struct iov_iter *i)

{

	return !(i->type & (ITER_BVEC | ITER_KVEC));

}



/*

 * Cap the iov_iter by given limit; note that the second argument is

 * *not* the new size - it's upper limit for such.  Passing it a value

mm/filemap.c

+1 −1
Original line number Diff line number Diff line
@@ -2464,7 +2464,7 @@ ssize_t generic_perform_write(struct file *file, 
	/*

	 * Copies from kernel address space cannot fail (NFSD is a big user).

	 */

	if (segment_eq(get_fs(), KERNEL_DS))

	if (!iter_is_iovec(i))

		flags |= AOP_FLAG_UNINTERRUPTIBLE;



	do {

mm/shmem.c

+1 −1
Original line number Diff line number Diff line
@@ -1536,7 +1536,7 @@ static ssize_t shmem_file_read_iter(struct kiocb *iocb, struct iov_iter *to) 
	 * holes of a sparse file, we actually need to allocate those pages,

	 * and even mark them dirty, so it cannot exceed the max_blocks limit.

	 */

	if (segment_eq(get_fs(), KERNEL_DS))

	if (!iter_is_iovec(to))

		sgp = SGP_DIRTY;



	index = *ppos >> PAGE_CACHE_SHIFT;