[PATCH 07/17] blk-map/bio: rename stuff
From: Tejun Heo
Date: Wed Apr 01 2009 - 09:50:33 EST
Impact: cleanup
blk-map and bio are about to go through major update. Make the
following renames to ease future changes.
* more concise/wieldy names: s/gfp_mask/gfp/, s/map_data/md/,
s/iov_count/count/. Note that count is and will continue to be used
only for number of entries in iovec. Similarly, nents will be used
for number of entries in sgl.
* less confusing names: bio_map_data doesn't have much to do with
mapping per-se but is aux info for copying. Also, it's very
confusing with rq_map_data which BTW is reserved pool of pages for
copying. Rename bio_map_data to bio_copy_info and everything
related to bci_*(). This part of API is gonna receive major
overhaul. The names and semantics will get clearer with future
changes.
Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
---
block/blk-map.c | 37 ++++----
fs/bio.c | 231 +++++++++++++++++++++++------------------------
include/linux/bio.h | 37 ++++----
include/linux/blkdev.h | 4 +-
4 files changed, 150 insertions(+), 159 deletions(-)
diff --git a/block/blk-map.c b/block/blk-map.c
index 4f0221a..eb206df 100644
--- a/block/blk-map.c
+++ b/block/blk-map.c
@@ -43,11 +43,11 @@ static int __blk_rq_unmap_user(struct bio *bio)
* blk_rq_map_user_iov - map user data to a request, for REQ_TYPE_BLOCK_PC usage
* @q: request queue where request should be inserted
* @rq: request to map data to
- * @map_data: pointer to the rq_map_data holding pages (if necessary)
+ * @md: pointer to the rq_map_data holding pages (if necessary)
* @iov: pointer to the iovec
- * @iov_count: number of elements in the iovec
+ * @count: number of elements in the iovec
* @len: I/O byte count
- * @gfp_mask: memory allocation flags
+ * @gfp: memory allocation flags
*
* Description:
* Data will be mapped directly for zero copy I/O, if possible. Otherwise
@@ -63,20 +63,19 @@ static int __blk_rq_unmap_user(struct bio *bio)
* unmapping.
*/
int blk_rq_map_user_iov(struct request_queue *q, struct request *rq,
- struct rq_map_data *map_data, struct iovec *iov,
- int iov_count, unsigned int len, gfp_t gfp_mask)
+ struct rq_map_data *md, struct iovec *iov, int count,
+ unsigned int len, gfp_t gfp)
{
struct bio *bio = ERR_PTR(-EINVAL);
int rw = rq_data_dir(rq);
- if (!iov || iov_count <= 0)
+ if (!iov || count <= 0)
return -EINVAL;
- if (!map_data)
- bio = bio_map_user_iov(q, NULL, iov, iov_count, rw, gfp_mask);
+ if (!md)
+ bio = bio_map_user_iov(q, NULL, iov, count, rw, gfp);
if (bio == ERR_PTR(-EINVAL))
- bio = bio_copy_user_iov(q, map_data, iov, iov_count, rw,
- gfp_mask);
+ bio = bio_copy_user_iov(q, md, iov, count, rw, gfp);
if (IS_ERR(bio))
return PTR_ERR(bio);
@@ -107,10 +106,10 @@ EXPORT_SYMBOL(blk_rq_map_user_iov);
* blk_rq_map_user - map user data to a request, for REQ_TYPE_BLOCK_PC usage
* @q: request queue where request should be inserted
* @rq: request structure to fill
- * @map_data: pointer to the rq_map_data holding pages (if necessary)
+ * @md: pointer to the rq_map_data holding pages (if necessary)
* @ubuf: the user buffer
* @len: length of user data
- * @gfp_mask: memory allocation flags
+ * @gfp: memory allocation flags
*
* Description:
* Data will be mapped directly for zero copy I/O, if possible. Otherwise
@@ -126,15 +125,15 @@ EXPORT_SYMBOL(blk_rq_map_user_iov);
* unmapping.
*/
int blk_rq_map_user(struct request_queue *q, struct request *rq,
- struct rq_map_data *map_data, void __user *ubuf,
- unsigned long len, gfp_t gfp_mask)
+ struct rq_map_data *md, void __user *ubuf,
+ unsigned long len, gfp_t gfp)
{
struct iovec iov;
iov.iov_base = ubuf;
iov.iov_len = len;
- return blk_rq_map_user_iov(q, rq, map_data, &iov, 1, len, gfp_mask);
+ return blk_rq_map_user_iov(q, rq, md, &iov, 1, len, gfp);
}
EXPORT_SYMBOL(blk_rq_map_user);
@@ -167,14 +166,14 @@ EXPORT_SYMBOL(blk_rq_unmap_user);
* @rq: request to fill
* @kbuf: the kernel buffer
* @len: length of user data
- * @gfp_mask: memory allocation flags
+ * @gfp: memory allocation flags
*
* Description:
* Data will be mapped directly if possible. Otherwise a bounce
* buffer is used.
*/
int blk_rq_map_kern(struct request_queue *q, struct request *rq, void *kbuf,
- unsigned int len, gfp_t gfp_mask)
+ unsigned int len, gfp_t gfp)
{
int rw = rq_data_dir(rq);
int do_copy = 0;
@@ -187,9 +186,9 @@ int blk_rq_map_kern(struct request_queue *q, struct request *rq, void *kbuf,
do_copy = !blk_rq_aligned(q, kbuf, len) || object_is_on_stack(kbuf);
if (do_copy)
- bio = bio_copy_kern(q, kbuf, len, gfp_mask, rw);
+ bio = bio_copy_kern(q, kbuf, len, gfp, rw);
else
- bio = bio_map_kern(q, kbuf, len, gfp_mask);
+ bio = bio_map_kern(q, kbuf, len, gfp);
if (IS_ERR(bio))
return PTR_ERR(bio);
diff --git a/fs/bio.c b/fs/bio.c
index 9d13f21..1cd97e3 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -163,7 +163,7 @@ void bvec_free_bs(struct bio_set *bs, struct bio_vec *bv, unsigned int idx)
}
}
-struct bio_vec *bvec_alloc_bs(gfp_t gfp_mask, int nr, unsigned long *idx,
+struct bio_vec *bvec_alloc_bs(gfp_t gfp, int nr, unsigned long *idx,
struct bio_set *bs)
{
struct bio_vec *bvl;
@@ -200,24 +200,24 @@ struct bio_vec *bvec_alloc_bs(gfp_t gfp_mask, int nr, unsigned long *idx,
*/
if (*idx == BIOVEC_MAX_IDX) {
fallback:
- bvl = mempool_alloc(bs->bvec_pool, gfp_mask);
+ bvl = mempool_alloc(bs->bvec_pool, gfp);
} else {
struct biovec_slab *bvs = bvec_slabs + *idx;
- gfp_t __gfp_mask = gfp_mask & ~(__GFP_WAIT | __GFP_IO);
+ gfp_t __gfp = gfp & ~(__GFP_WAIT | __GFP_IO);
/*
* Make this allocation restricted and don't dump info on
* allocation failures, since we'll fallback to the mempool
* in case of failure.
*/
- __gfp_mask |= __GFP_NOMEMALLOC | __GFP_NORETRY | __GFP_NOWARN;
+ __gfp |= __GFP_NOMEMALLOC | __GFP_NORETRY | __GFP_NOWARN;
/*
* Try a slab allocation. If this fails and __GFP_WAIT
* is set, retry with the 1-entry mempool
*/
- bvl = kmem_cache_alloc(bvs->slab, __gfp_mask);
- if (unlikely(!bvl && (gfp_mask & __GFP_WAIT))) {
+ bvl = kmem_cache_alloc(bvs->slab, __gfp);
+ if (unlikely(!bvl && (gfp & __GFP_WAIT))) {
*idx = BIOVEC_MAX_IDX;
goto fallback;
}
@@ -256,7 +256,7 @@ void bio_init(struct bio *bio)
/**
* bio_alloc_bioset - allocate a bio for I/O
- * @gfp_mask: the GFP_ mask given to the slab allocator
+ * @gfp: the GFP_ mask given to the slab allocator
* @nr_iovecs: number of iovecs to pre-allocate
* @bs: the bio_set to allocate from. If %NULL, just use kmalloc
*
@@ -270,7 +270,7 @@ void bio_init(struct bio *bio)
* of a bio, to do the appropriate freeing of the bio once the reference
* count drops to zero.
**/
-struct bio *bio_alloc_bioset(gfp_t gfp_mask, int nr_iovecs, struct bio_set *bs)
+struct bio *bio_alloc_bioset(gfp_t gfp, int nr_iovecs, struct bio_set *bs)
{
struct bio_vec *bvl = NULL;
struct bio *bio = NULL;
@@ -278,12 +278,12 @@ struct bio *bio_alloc_bioset(gfp_t gfp_mask, int nr_iovecs, struct bio_set *bs)
void *p = NULL;
if (bs) {
- p = mempool_alloc(bs->bio_pool, gfp_mask);
+ p = mempool_alloc(bs->bio_pool, gfp);
if (!p)
goto err;
bio = p + bs->front_pad;
} else {
- bio = kmalloc(sizeof(*bio), gfp_mask);
+ bio = kmalloc(sizeof(*bio), gfp);
if (!bio)
goto err;
}
@@ -297,12 +297,12 @@ struct bio *bio_alloc_bioset(gfp_t gfp_mask, int nr_iovecs, struct bio_set *bs)
bvl = bio->bi_inline_vecs;
nr_iovecs = BIO_INLINE_VECS;
} else if (bs) {
- bvl = bvec_alloc_bs(gfp_mask, nr_iovecs, &idx, bs);
+ bvl = bvec_alloc_bs(gfp, nr_iovecs, &idx, bs);
if (unlikely(!bvl))
goto err_free;
nr_iovecs = bvec_nr_vecs(idx);
} else {
- bvl = kmalloc(nr_iovecs * sizeof(struct bio_vec), gfp_mask);
+ bvl = kmalloc(nr_iovecs * sizeof(struct bio_vec), gfp);
if (unlikely(!bvl))
goto err_free;
}
@@ -329,18 +329,18 @@ static void bio_fs_destructor(struct bio *bio)
/**
* bio_alloc - allocate a new bio, memory pool backed
- * @gfp_mask: allocation mask to use
+ * @gfp: allocation mask to use
* @nr_iovecs: number of iovecs
*
- * Allocate a new bio with @nr_iovecs bvecs. If @gfp_mask
+ * Allocate a new bio with @nr_iovecs bvecs. If @gfp
* contains __GFP_WAIT, the allocation is guaranteed to succeed.
*
* RETURNS:
* Pointer to new bio on success, NULL on failure.
*/
-struct bio *bio_alloc(gfp_t gfp_mask, int nr_iovecs)
+struct bio *bio_alloc(gfp_t gfp, int nr_iovecs)
{
- struct bio *bio = bio_alloc_bioset(gfp_mask, nr_iovecs, fs_bio_set);
+ struct bio *bio = bio_alloc_bioset(gfp, nr_iovecs, fs_bio_set);
if (bio)
bio->bi_destructor = bio_fs_destructor;
@@ -359,19 +359,19 @@ static void bio_kmalloc_destructor(struct bio *bio)
/**
* bio_kmalloc - allocate a new bio
- * @gfp_mask: allocation mask to use
+ * @gfp: allocation mask to use
* @nr_iovecs: number of iovecs
*
* Similar to bio_alloc() but uses regular kmalloc for allocation
- * and can fail unless __GFP_NOFAIL is set in @gfp_mask. This is
+ * and can fail unless __GFP_NOFAIL is set in @gfp. This is
* useful for more permanant or over-sized bio allocations.
*
* RETURNS:
* Poitner to new bio on success, NULL on failure.
*/
-struct bio *bio_kmalloc(gfp_t gfp_mask, int nr_iovecs)
+struct bio *bio_kmalloc(gfp_t gfp, int nr_iovecs)
{
- struct bio *bio = bio_alloc_bioset(gfp_mask, nr_iovecs, NULL);
+ struct bio *bio = bio_alloc_bioset(gfp, nr_iovecs, NULL);
if (bio)
bio->bi_destructor = bio_kmalloc_destructor;
@@ -453,13 +453,13 @@ void __bio_clone(struct bio *bio, struct bio *bio_src)
/**
* bio_clone - clone a bio
* @bio: bio to clone
- * @gfp_mask: allocation priority
+ * @gfp: allocation priority
*
* Like __bio_clone, only also allocates the returned bio
*/
-struct bio *bio_clone(struct bio *bio, gfp_t gfp_mask)
+struct bio *bio_clone(struct bio *bio, gfp_t gfp)
{
- struct bio *b = bio_alloc_bioset(gfp_mask, bio->bi_max_vecs, fs_bio_set);
+ struct bio *b = bio_alloc_bioset(gfp, bio->bi_max_vecs, fs_bio_set);
if (!b)
return NULL;
@@ -470,7 +470,7 @@ struct bio *bio_clone(struct bio *bio, gfp_t gfp_mask)
if (bio_integrity(bio)) {
int ret;
- ret = bio_integrity_clone(b, bio, gfp_mask);
+ ret = bio_integrity_clone(b, bio, gfp);
if (ret < 0) {
bio_put(b);
@@ -653,56 +653,54 @@ int bio_add_page(struct bio *bio, struct page *page, unsigned int len,
return __bio_add_page(q, bio, page, len, offset, q->max_sectors);
}
-struct bio_map_data {
- struct bio_vec *iovecs;
- struct iovec *sgvecs;
- int nr_sgvecs;
- int is_our_pages;
+struct bio_copy_info {
+ struct bio_vec *iovecs;
+ struct iovec *src_iov;
+ int src_count;
+ int is_our_pages;
};
-static void bio_set_map_data(struct bio_map_data *bmd, struct bio *bio,
- struct iovec *iov, int iov_count,
- int is_our_pages)
+static void bci_set(struct bio_copy_info *bci, struct bio *bio,
+ struct iovec *iov, int count, int is_our_pages)
{
- memcpy(bmd->iovecs, bio->bi_io_vec, sizeof(struct bio_vec) * bio->bi_vcnt);
- memcpy(bmd->sgvecs, iov, sizeof(struct iovec) * iov_count);
- bmd->nr_sgvecs = iov_count;
- bmd->is_our_pages = is_our_pages;
- bio->bi_private = bmd;
+ memcpy(bci->iovecs, bio->bi_io_vec, sizeof(struct bio_vec) * bio->bi_vcnt);
+ memcpy(bci->src_iov, iov, sizeof(struct iovec) * count);
+ bci->src_count = count;
+ bci->is_our_pages = is_our_pages;
+ bio->bi_private = bci;
}
-static void bio_free_map_data(struct bio_map_data *bmd)
+static void bci_free(struct bio_copy_info *bci)
{
- kfree(bmd->iovecs);
- kfree(bmd->sgvecs);
- kfree(bmd);
+ kfree(bci->iovecs);
+ kfree(bci->src_iov);
+ kfree(bci);
}
-static struct bio_map_data *bio_alloc_map_data(int nr_segs, int iov_count,
- gfp_t gfp_mask)
+static struct bio_copy_info *bci_alloc(int nr_segs, int count, gfp_t gfp)
{
- struct bio_map_data *bmd = kmalloc(sizeof(*bmd), gfp_mask);
+ struct bio_copy_info *bci = kmalloc(sizeof(*bci), gfp);
- if (!bmd)
+ if (!bci)
return NULL;
- bmd->iovecs = kmalloc(sizeof(struct bio_vec) * nr_segs, gfp_mask);
- if (!bmd->iovecs) {
- kfree(bmd);
+ bci->iovecs = kmalloc(sizeof(struct bio_vec) * nr_segs, gfp);
+ if (!bci->iovecs) {
+ kfree(bci);
return NULL;
}
- bmd->sgvecs = kmalloc(sizeof(struct iovec) * iov_count, gfp_mask);
- if (bmd->sgvecs)
- return bmd;
+ bci->src_iov = kmalloc(sizeof(struct iovec) * count, gfp);
+ if (bci->src_count)
+ return bci;
- kfree(bmd->iovecs);
- kfree(bmd);
+ kfree(bci->iovecs);
+ kfree(bci);
return NULL;
}
static int __bio_copy_iov(struct bio *bio, struct bio_vec *iovecs,
- struct iovec *iov, int iov_count, int uncopy,
+ struct iovec *iov, int count, int uncopy,
int do_free_page)
{
int ret = 0, i;
@@ -715,7 +713,7 @@ static int __bio_copy_iov(struct bio *bio, struct bio_vec *iovecs,
char *bv_addr = page_address(bvec->bv_page);
unsigned int bv_len = iovecs[i].bv_len;
- while (bv_len && iov_idx < iov_count) {
+ while (bv_len && iov_idx < count) {
unsigned int bytes;
char *iov_addr;
@@ -762,13 +760,13 @@ static int __bio_copy_iov(struct bio *bio, struct bio_vec *iovecs,
*/
int bio_uncopy_user(struct bio *bio)
{
- struct bio_map_data *bmd = bio->bi_private;
+ struct bio_copy_info *bci = bio->bi_private;
int ret = 0;
if (!bio_flagged(bio, BIO_NULL_MAPPED))
- ret = __bio_copy_iov(bio, bmd->iovecs, bmd->sgvecs,
- bmd->nr_sgvecs, 1, bmd->is_our_pages);
- bio_free_map_data(bmd);
+ ret = __bio_copy_iov(bio, bci->iovecs, bci->src_iov,
+ bci->src_count, 1, bci->is_our_pages);
+ bci_free(bci);
bio_put(bio);
return ret;
}
@@ -776,31 +774,29 @@ int bio_uncopy_user(struct bio *bio)
/**
* bio_copy_user_iov - copy user data to bio
* @q: destination block queue
- * @map_data: pointer to the rq_map_data holding pages (if necessary)
- * @iov: the iovec.
- * @iov_count: number of elements in the iovec
+ * @md: pointer to the rq_map_data holding pages (if necessary)
+ * @iov: the iovec.
+ * @count: number of elements in the iovec
* @rw: READ or WRITE
- * @gfp_mask: memory allocation flags
+ * @gfp: memory allocation flags
*
* Prepares and returns a bio for indirect user io, bouncing data
* to/from kernel pages as necessary. Must be paired with
* call bio_uncopy_user() on io completion.
*/
-struct bio *bio_copy_user_iov(struct request_queue *q,
- struct rq_map_data *map_data,
- struct iovec *iov, int iov_count, int rw,
- gfp_t gfp_mask)
+struct bio *bio_copy_user_iov(struct request_queue *q, struct rq_map_data *md,
+ struct iovec *iov, int count, int rw, gfp_t gfp)
{
- struct bio_map_data *bmd;
+ struct bio_copy_info *bci;
struct bio_vec *bvec;
struct page *page;
struct bio *bio;
int i, ret;
int nr_pages = 0;
unsigned int len = 0;
- unsigned int offset = map_data ? map_data->offset & ~PAGE_MASK : 0;
+ unsigned int offset = md ? md->offset & ~PAGE_MASK : 0;
- for (i = 0; i < iov_count; i++) {
+ for (i = 0; i < count; i++) {
unsigned long uaddr;
unsigned long end;
unsigned long start;
@@ -813,23 +809,23 @@ struct bio *bio_copy_user_iov(struct request_queue *q,
len += iov[i].iov_len;
}
- bmd = bio_alloc_map_data(nr_pages, iov_count, gfp_mask);
- if (!bmd)
+ bci = bci_alloc(nr_pages, count, gfp);
+ if (!bci)
return ERR_PTR(-ENOMEM);
ret = -ENOMEM;
- bio = bio_kmalloc(gfp_mask, nr_pages);
+ bio = bio_kmalloc(gfp, nr_pages);
if (!bio)
- goto out_bmd;
+ goto out_bci;
if (rw == WRITE)
bio->bi_rw |= 1 << BIO_RW;
ret = 0;
- if (map_data) {
- nr_pages = 1 << map_data->page_order;
- i = map_data->offset / PAGE_SIZE;
+ if (md) {
+ nr_pages = 1 << md->page_order;
+ i = md->offset / PAGE_SIZE;
}
while (len) {
unsigned int bytes = PAGE_SIZE;
@@ -839,18 +835,18 @@ struct bio *bio_copy_user_iov(struct request_queue *q,
if (bytes > len)
bytes = len;
- if (map_data) {
- if (i == map_data->nr_entries * nr_pages) {
+ if (md) {
+ if (i == md->nr_entries * nr_pages) {
ret = -ENOMEM;
break;
}
- page = map_data->pages[i / nr_pages];
+ page = md->pages[i / nr_pages];
page += (i % nr_pages);
i++;
} else {
- page = alloc_page(q->bounce_gfp | gfp_mask);
+ page = alloc_page(q->bounce_gfp | gfp);
if (!page) {
ret = -ENOMEM;
break;
@@ -870,56 +866,56 @@ struct bio *bio_copy_user_iov(struct request_queue *q,
/*
* success
*/
- if (unlikely(map_data && map_data->null_mapped))
+ if (unlikely(md && md->null_mapped))
bio->bi_flags |= (1 << BIO_NULL_MAPPED);
else if (rw == WRITE) {
- ret = __bio_copy_iov(bio, bio->bi_io_vec, iov, iov_count, 0, 0);
+ ret = __bio_copy_iov(bio, bio->bi_io_vec, iov, count, 0, 0);
if (ret)
goto cleanup;
}
- bio_set_map_data(bmd, bio, iov, iov_count, map_data ? 0 : 1);
+ bci_set(bci, bio, iov, count, md ? 0 : 1);
return bio;
cleanup:
- if (!map_data)
+ if (!md)
bio_for_each_segment(bvec, bio, i)
__free_page(bvec->bv_page);
bio_put(bio);
-out_bmd:
- bio_free_map_data(bmd);
+out_bci:
+ bci_free(bci);
return ERR_PTR(ret);
}
/**
* bio_copy_user - copy user data to bio
* @q: destination block queue
- * @map_data: pointer to the rq_map_data holding pages (if necessary)
+ * @md: pointer to the rq_map_data holding pages (if necessary)
* @uaddr: start of user address
* @len: length in bytes
* @rw: READ or WRITE
- * @gfp_mask: memory allocation flags
+ * @gfp: memory allocation flags
*
* Prepares and returns a bio for indirect user io, bouncing data
* to/from kernel pages as necessary. Must be paired with
* call bio_uncopy_user() on io completion.
*/
-struct bio *bio_copy_user(struct request_queue *q, struct rq_map_data *map_data,
+struct bio *bio_copy_user(struct request_queue *q, struct rq_map_data *md,
unsigned long uaddr, unsigned int len, int rw,
- gfp_t gfp_mask)
+ gfp_t gfp)
{
struct iovec iov;
iov.iov_base = (void __user *)uaddr;
iov.iov_len = len;
- return bio_copy_user_iov(q, map_data, &iov, 1, rw, gfp_mask);
+ return bio_copy_user_iov(q, md, &iov, 1, rw, gfp);
}
static struct bio *__bio_map_user_iov(struct request_queue *q,
struct block_device *bdev,
- struct iovec *iov, int iov_count,
- int rw, gfp_t gfp_mask)
+ struct iovec *iov, int count, int rw,
+ gfp_t gfp)
{
int i, j;
size_t tot_len = 0;
@@ -929,7 +925,7 @@ static struct bio *__bio_map_user_iov(struct request_queue *q,
int cur_page = 0;
int ret, offset;
- for (i = 0; i < iov_count; i++) {
+ for (i = 0; i < count; i++) {
unsigned long uaddr = (unsigned long)iov[i].iov_base;
unsigned long len = iov[i].iov_len;
@@ -950,16 +946,16 @@ static struct bio *__bio_map_user_iov(struct request_queue *q,
if (!nr_pages || tot_len & q->dma_pad_mask)
return ERR_PTR(-EINVAL);
- bio = bio_kmalloc(gfp_mask, nr_pages);
+ bio = bio_kmalloc(gfp, nr_pages);
if (!bio)
return ERR_PTR(-ENOMEM);
ret = -ENOMEM;
- pages = kcalloc(nr_pages, sizeof(struct page *), gfp_mask);
+ pages = kcalloc(nr_pages, sizeof(struct page *), gfp);
if (!pages)
goto out;
- for (i = 0; i < iov_count; i++) {
+ for (i = 0; i < count; i++) {
unsigned long uaddr = (unsigned long)iov[i].iov_base;
unsigned long len = iov[i].iov_len;
unsigned long end = (uaddr + len + PAGE_SIZE - 1) >> PAGE_SHIFT;
@@ -1034,21 +1030,21 @@ static struct bio *__bio_map_user_iov(struct request_queue *q,
* @uaddr: start of user address
* @len: length in bytes
* @rw: READ or WRITE
- * @gfp_mask: memory allocation flags
+ * @gfp: memory allocation flags
*
* Map the user space address into a bio suitable for io to a block
* device. Returns an error pointer in case of error.
*/
struct bio *bio_map_user(struct request_queue *q, struct block_device *bdev,
unsigned long uaddr, unsigned int len, int rw,
- gfp_t gfp_mask)
+ gfp_t gfp)
{
struct iovec iov;
iov.iov_base = (void __user *)uaddr;
iov.iov_len = len;
- return bio_map_user_iov(q, bdev, &iov, 1, rw, gfp_mask);
+ return bio_map_user_iov(q, bdev, &iov, 1, rw, gfp);
}
/**
@@ -1056,20 +1052,19 @@ struct bio *bio_map_user(struct request_queue *q, struct block_device *bdev,
* @q: the struct request_queue for the bio
* @bdev: destination block device
* @iov: the iovec.
- * @iov_count: number of elements in the iovec
+ * @count: number of elements in the iovec
* @rw: READ or WRITE
- * @gfp_mask: memory allocation flags
+ * @gfp: memory allocation flags
*
* Map the user space address into a bio suitable for io to a block
* device. Returns an error pointer in case of error.
*/
struct bio *bio_map_user_iov(struct request_queue *q, struct block_device *bdev,
- struct iovec *iov, int iov_count, int rw,
- gfp_t gfp_mask)
+ struct iovec *iov, int count, int rw, gfp_t gfp)
{
struct bio *bio;
- bio = __bio_map_user_iov(q, bdev, iov, iov_count, rw, gfp_mask);
+ bio = __bio_map_user_iov(q, bdev, iov, count, rw, gfp);
if (IS_ERR(bio))
return bio;
@@ -1124,7 +1119,7 @@ static void bio_map_kern_endio(struct bio *bio, int err)
static struct bio *__bio_map_kern(struct request_queue *q, void *data,
- unsigned int len, gfp_t gfp_mask)
+ unsigned int len, gfp_t gfp)
{
unsigned long kaddr = (unsigned long)data;
unsigned long end = (kaddr + len + PAGE_SIZE - 1) >> PAGE_SHIFT;
@@ -1133,7 +1128,7 @@ static struct bio *__bio_map_kern(struct request_queue *q, void *data,
int offset, i;
struct bio *bio;
- bio = bio_kmalloc(gfp_mask, nr_pages);
+ bio = bio_kmalloc(gfp, nr_pages);
if (!bio)
return ERR_PTR(-ENOMEM);
@@ -1165,17 +1160,17 @@ static struct bio *__bio_map_kern(struct request_queue *q, void *data,
* @q: the struct request_queue for the bio
* @data: pointer to buffer to map
* @len: length in bytes
- * @gfp_mask: allocation flags for bio allocation
+ * @gfp: allocation flags for bio allocation
*
* Map the kernel address into a bio suitable for io to a block
* device. Returns an error pointer in case of error.
*/
struct bio *bio_map_kern(struct request_queue *q, void *data, unsigned int len,
- gfp_t gfp_mask)
+ gfp_t gfp)
{
struct bio *bio;
- bio = __bio_map_kern(q, data, len, gfp_mask);
+ bio = __bio_map_kern(q, data, len, gfp);
if (IS_ERR(bio))
return bio;
@@ -1193,13 +1188,13 @@ static void bio_copy_kern_endio(struct bio *bio, int err)
{
struct bio_vec *bvec;
const int read = bio_data_dir(bio) == READ;
- struct bio_map_data *bmd = bio->bi_private;
+ struct bio_copy_info *bci = bio->bi_private;
int i;
- char *p = bmd->sgvecs[0].iov_base;
+ char *p = bci->src_iov[0].iov_base;
__bio_for_each_segment(bvec, bio, i, 0) {
char *addr = page_address(bvec->bv_page);
- int len = bmd->iovecs[i].bv_len;
+ int len = bci->iovecs[i].bv_len;
if (read && !err)
memcpy(p, addr, len);
@@ -1208,7 +1203,7 @@ static void bio_copy_kern_endio(struct bio *bio, int err)
p += len;
}
- bio_free_map_data(bmd);
+ bci_free(bci);
bio_put(bio);
}
@@ -1217,20 +1212,20 @@ static void bio_copy_kern_endio(struct bio *bio, int err)
* @q: the struct request_queue for the bio
* @data: pointer to buffer to copy
* @len: length in bytes
- * @gfp_mask: allocation flags for bio and page allocation
+ * @gfp: allocation flags for bio and page allocation
* @rw: READ or WRITE
*
* copy the kernel address into a bio suitable for io to a block
* device. Returns an error pointer in case of error.
*/
struct bio *bio_copy_kern(struct request_queue *q, void *data, unsigned int len,
- gfp_t gfp_mask, int rw)
+ gfp_t gfp, int rw)
{
struct bio *bio;
struct bio_vec *bvec;
int i;
- bio = bio_copy_user(q, NULL, (unsigned long)data, len, READ, gfp_mask);
+ bio = bio_copy_user(q, NULL, (unsigned long)data, len, READ, gfp);
if (IS_ERR(bio))
return bio;
diff --git a/include/linux/bio.h b/include/linux/bio.h
index 8215ded..1c21e59 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -365,9 +365,9 @@ void bio_pair_release(struct bio_pair *dbio);
struct bio_set *bioset_create(unsigned int pool_size, unsigned int front_pad);
void bioset_free(struct bio_set *bs);
-struct bio *bio_alloc(gfp_t gfp_mask, int nr_iovecs);
-struct bio *bio_kmalloc(gfp_t gfp_mask, int nr_iovecs);
-struct bio *bio_alloc_bioset(gfp_t gfp_mask, int nr_iovecs, struct bio_set *bs);
+struct bio *bio_alloc(gfp_t gfp, int nr_iovecs);
+struct bio *bio_kmalloc(gfp_t gfp, int nr_iovecs);
+struct bio *bio_alloc_bioset(gfp_t gfp, int nr_iovecs, struct bio_set *bs);
void bio_put(struct bio *bio);
void bio_free(struct bio *bio, struct bio_set *bs);
@@ -375,7 +375,7 @@ void bio_endio(struct bio *bio, int error);
int bio_phys_segments(struct request_queue *q, struct bio *bio);
void __bio_clone(struct bio *bio, struct bio *bio_src);
-struct bio *bio_clone(struct bio *bio, gfp_t gfp_mask);
+struct bio *bio_clone(struct bio *bio, gfp_t gfp);
void bio_init(struct bio *bio);
@@ -388,27 +388,24 @@ sector_t bio_sector_offset(struct bio *bio, unsigned short index,
unsigned int offset);
struct bio *bio_map_user(struct request_queue *q, struct block_device *bdev,
unsigned long uaddr, unsigned int len, int rw,
- gfp_t gfp_mask);
+ gfp_t gfp);
struct bio *bio_map_user_iov(struct request_queue *q, struct block_device *bdev,
- struct iovec *iov, int iov_count, int rw,
- gfp_t gfp_mask);
+ struct iovec *iov, int count, int rw, gfp_t gfp);
void bio_unmap_user(struct bio *bio);
-struct bio *bio_copy_user(struct request_queue *q, struct rq_map_data *map_data,
+struct bio *bio_copy_user(struct request_queue *q, struct rq_map_data *md,
unsigned long uaddr, unsigned int len, int rw,
- gfp_t gfp_mask);
-struct bio *bio_copy_user_iov(struct request_queue *q,
- struct rq_map_data *map_data,
- struct iovec *iov, int iov_count, int rw,
- gfp_t gfp_mask);
+ gfp_t gfp);
+struct bio *bio_copy_user_iov(struct request_queue *q, struct rq_map_data *md,
+ struct iovec *iov, int count, int rw, gfp_t gfp);
int bio_uncopy_user(struct bio *bio);
struct bio *bio_map_kern(struct request_queue *q, void *data, unsigned int len,
- gfp_t gfp_mask);
+ gfp_t gfp);
struct bio *bio_copy_kern(struct request_queue *q, void *data, unsigned int len,
- gfp_t gfp_mask, int rw);
+ gfp_t gfp, int rw);
void bio_set_pages_dirty(struct bio *bio);
void bio_check_pages_dirty(struct bio *bio);
void zero_fill_bio(struct bio *bio);
-struct bio_vec *bvec_alloc_bs(gfp_t gfp_mask, int nr, unsigned long *idx,
+struct bio_vec *bvec_alloc_bs(gfp_t gfp, int nr, unsigned long *idx,
struct bio_set *bs);
void bvec_free_bs(struct bio_set *bs, struct bio_vec *bv, unsigned int idx);
unsigned int bvec_nr_vecs(unsigned short idx);
@@ -530,7 +527,7 @@ static inline bool bio_integrity(struct bio *bio)
}
struct bio_integrity_payload *bio_integrity_alloc(struct bio *bio,
- gfp_t gfp_mask, unsigned int nr_vecs);
+ gfp_t gfp, unsigned int nr_vecs);
void bio_integrity_free(struct bio *bio);
int bio_integrity_add_page(struct bio *bio, struct page *page,
unsigned int len, unsigned int offset);
@@ -543,14 +540,14 @@ void bio_integrity_advance(struct bio *bio, unsigned int bytes_done);
void bio_integrity_trim(struct bio *bio, unsigned int offset,
unsigned int sectors);
void bio_integrity_split(struct bio *bio, struct bio_pair *bp, int sectors);
-int bio_integrity_clone(struct bio *bio, struct bio *bio_src, gfp_t gfp_mask);
+int bio_integrity_clone(struct bio *bio, struct bio *bio_src, gfp_t gfp);
#else /* CONFIG_BLK_DEV_INTEGRITY */
static inline bool bio_integrity(struct bio *bio)
{ return false; }
static inline struct bio_integrity_payload *bio_integrity_alloc(struct bio *bio,
- gfp_t gfp_mask, unsigned int nr_vecs)
+ gfp_t gfp, unsigned int nr_vecs)
{ return NULL; }
static inline void bio_integrity_free(struct bio *bio)
{ }
@@ -580,7 +577,7 @@ static inline void bio_integrity_split(struct bio *bio, struct bio_pair *bp,
{ }
static inline int bio_integrity_clone(struct bio *bio, struct bio *bio_src,
- gfp_t gfp_mask)
+ gfp_t gfp)
{ return -EIO; }
#endif /* CONFIG_BLK_DEV_INTEGRITY */
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index d7bb20c..d04e118 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -782,8 +782,8 @@ extern int blk_rq_map_user(struct request_queue *, struct request *,
extern int blk_rq_unmap_user(struct bio *);
extern int blk_rq_map_kern(struct request_queue *, struct request *, void *, unsigned int, gfp_t);
extern int blk_rq_map_user_iov(struct request_queue *q, struct request *rq,
- struct rq_map_data *map_data, struct iovec *iov,
- int iov_count, unsigned int len, gfp_t gfp_mask);
+ struct rq_map_data *md, struct iovec *iov,
+ int count, unsigned int len, gfp_t gfp);
extern int blk_execute_rq(struct request_queue *, struct gendisk *,
struct request *, int);
extern void blk_execute_rq_nowait(struct request_queue *, struct gendisk *,
--
1.6.0.2
--
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