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iov_iter: remove iov_iter_is_aligned 

No more callers.

Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Keith Busch 2025-08-27 07:12:58 -07:00 committed by Jens Axboe
parent 69d7ed5b9e
commit b475272f03
2 changed files with 0 additions and 97 deletions
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2
include/linux/uio.h
View File

@ -286,8 +286,6 @@ size_t _copy_mc_to_iter(const void *addr, size_t bytes, struct iov_iter *i);
#endif #endif
size_t iov_iter_zero(size_t bytes, struct iov_iter *); size_t iov_iter_zero(size_t bytes, struct iov_iter *);
bool iov_iter_is_aligned(const struct iov_iter *i, unsigned addr_mask,
unsigned len_mask);
unsigned long iov_iter_alignment(const struct iov_iter *i); unsigned long iov_iter_alignment(const struct iov_iter *i);
unsigned long iov_iter_gap_alignment(const struct iov_iter *i); unsigned long iov_iter_gap_alignment(const struct iov_iter *i);
void iov_iter_init(struct iov_iter *i, unsigned int direction, const struct iovec *iov, void iov_iter_init(struct iov_iter *i, unsigned int direction, const struct iovec *iov,

95
lib/iov_iter.c
View File

@ -784,101 +784,6 @@ void iov_iter_discard(struct iov_iter *i, unsigned int direction, size_t count)
} }
EXPORT_SYMBOL(iov_iter_discard); EXPORT_SYMBOL(iov_iter_discard);
static bool iov_iter_aligned_iovec(const struct iov_iter *i, unsigned addr_mask,
unsigned len_mask)
{
const struct iovec *iov = iter_iov(i);
size_t size = i->count;
size_t skip = i->iov_offset;
do {
size_t len = iov->iov_len - skip;
if (len > size)
len = size;
if (len & len_mask)
return false;
if ((unsigned long)(iov->iov_base + skip) & addr_mask)
return false;
iov++;
size -= len;
skip = 0;
} while (size);
return true;
}
static bool iov_iter_aligned_bvec(const struct iov_iter *i, unsigned addr_mask,
unsigned len_mask)
{
const struct bio_vec *bvec = i->bvec;
unsigned skip = i->iov_offset;
size_t size = i->count;
do {
size_t len = bvec->bv_len - skip;
if (len > size)
len = size;
if (len & len_mask)
return false;
if ((unsigned long)(bvec->bv_offset + skip) & addr_mask)
return false;
bvec++;
size -= len;
skip = 0;
} while (size);
return true;
}
/**
* iov_iter_is_aligned() - Check if the addresses and lengths of each segments
* are aligned to the parameters.
*
* @i: &struct iov_iter to restore
* @addr_mask: bit mask to check against the iov element's addresses
* @len_mask: bit mask to check against the iov element's lengths
*
* Return: false if any addresses or lengths intersect with the provided masks
*/
bool iov_iter_is_aligned(const struct iov_iter *i, unsigned addr_mask,
unsigned len_mask)
{
if (likely(iter_is_ubuf(i))) {
if (i->count & len_mask)
return false;
if ((unsigned long)(i->ubuf + i->iov_offset) & addr_mask)
return false;
return true;
}
if (likely(iter_is_iovec(i) || iov_iter_is_kvec(i)))
return iov_iter_aligned_iovec(i, addr_mask, len_mask);
if (iov_iter_is_bvec(i))
return iov_iter_aligned_bvec(i, addr_mask, len_mask);
/* With both xarray and folioq types, we're dealing with whole folios. */
if (iov_iter_is_xarray(i)) {
if (i->count & len_mask)
return false;
if ((i->xarray_start + i->iov_offset) & addr_mask)
return false;
}
if (iov_iter_is_folioq(i)) {
if (i->count & len_mask)
return false;
if (i->iov_offset & addr_mask)
return false;
}
return true;
}
EXPORT_SYMBOL_GPL(iov_iter_is_aligned);
static unsigned long iov_iter_alignment_iovec(const struct iov_iter *i) static unsigned long iov_iter_alignment_iovec(const struct iov_iter *i)
{ {
const struct iovec *iov = iter_iov(i); const struct iovec *iov = iter_iov(i);