---
fs/btrfs/compression.c | 26 ++++++++-----------------
fs/btrfs/extent_io.c | 24 ++++++++---------------
fs/btrfs/inode.c | 32 ++++++++++--------------------
fs/btrfs/volumes.c | 44 +++++++++++++++++++++++++++++++++++++++---
fs/btrfs/volumes.h | 20 ++-----------------
5 files changed, 69 insertions(+), 77 deletions(-)
diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index ae6f986058c75..fca025c327a7e 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -445,10 +445,9 @@ static struct bio *alloc_compressed_bio(struct compressed_bio *cb, u64 disk_byte
u64 *next_stripe_start)
{
struct btrfs_fs_info *fs_info = btrfs_sb(cb->inode->i_sb);
- struct btrfs_io_geometry geom;
- struct extent_map *em;
+ struct block_device *bdev;
struct bio *bio;
- int ret;
+ u64 len;
bio = btrfs_bio_alloc(cb->inode, BIO_MAX_VECS, opf);
bio->bi_iter.bi_sector = disk_bytenr >> SECTOR_SHIFT;
@@ -459,23 +458,14 @@ static struct bio *alloc_compressed_bio(struct compressed_bio *cb, u64 disk_byte
else
btrfs_bio(bio)->end_io_type = BTRFS_ENDIO_WQ_DATA_READ;
- em = btrfs_get_chunk_map(fs_info, disk_bytenr, fs_info->sectorsize);
- if (IS_ERR(em)) {
- bio_put(bio);
- return ERR_CAST(em);
- }
+ bdev = btrfs_get_stripe_info(fs_info, btrfs_op(bio), disk_bytenr,
+ fs_info->sectorsize, &len);
+ if (IS_ERR(bdev))
+ return ERR_CAST(bdev);
if (bio_op(bio) == REQ_OP_ZONE_APPEND)
- bio_set_dev(bio, em->map_lookup->stripes[0].dev->bdev);
-
- ret = btrfs_get_io_geometry(fs_info, em, btrfs_op(bio), disk_bytenr, &geom);
- free_extent_map(em);
- if (ret < 0) {
- bio_put(bio);
- return ERR_PTR(ret);
- }
- *next_stripe_start = disk_bytenr + geom.len;
-
+ bio_set_dev(bio, bdev);
+ *next_stripe_start = disk_bytenr + len;
return bio;
}
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index bfd91ed27bd14..10fc5e4dd14a3 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -3235,11 +3235,10 @@ static int calc_bio_boundaries(struct btrfs_bio_ctrl *bio_ctrl,
struct btrfs_inode *inode, u64 file_offset)
{
struct btrfs_fs_info *fs_info = inode->root->fs_info;
- struct btrfs_io_geometry geom;
struct btrfs_ordered_extent *ordered;
- struct extent_map *em;
u64 logical = (bio_ctrl->bio->bi_iter.bi_sector << SECTOR_SHIFT);
- int ret;
+ struct block_device *bdev;
+ u64 len;
/*
* Pages for compressed extent are never submitted to disk directly,
@@ -3253,19 +3252,12 @@ static int calc_bio_boundaries(struct btrfs_bio_ctrl *bio_ctrl,
bio_ctrl->len_to_stripe_boundary = U32_MAX;
return 0;
}
- em = btrfs_get_chunk_map(fs_info, logical, fs_info->sectorsize);
- if (IS_ERR(em))
- return PTR_ERR(em);
- ret = btrfs_get_io_geometry(fs_info, em, btrfs_op(bio_ctrl->bio),
- logical, &geom);
- free_extent_map(em);
- if (ret < 0) {
- return ret;
- }
- if (geom.len > U32_MAX)
- bio_ctrl->len_to_stripe_boundary = U32_MAX;
- else
- bio_ctrl->len_to_stripe_boundary = (u32)geom.len;
+
+ bdev = btrfs_get_stripe_info(fs_info, btrfs_op(bio_ctrl->bio), logical,
+ fs_info->sectorsize, &len);
+ if (IS_ERR(bdev))
+ return PTR_ERR(bdev);
+ bio_ctrl->len_to_stripe_boundary = min(len, (u64)U32_MAX);
if (bio_op(bio_ctrl->bio) != REQ_OP_ZONE_APPEND) {
bio_ctrl->len_to_oe_boundary = U32_MAX;
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index d4faed31d36a4..3f7e1779ff19f 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -7944,12 +7944,9 @@ static void btrfs_submit_direct(const struct iomap_iter *iter,
u64 submit_len;
u64 clone_offset = 0;
u64 clone_len;
- u64 logical;
- int ret;
blk_status_t status;
- struct btrfs_io_geometry geom;
struct btrfs_dio_data *dio_data = iter->private;
- struct extent_map *em = NULL;
+ u64 len;
dip = btrfs_create_dio_private(dio_bio, inode, file_offset);
if (!dip) {
@@ -7978,21 +7975,16 @@ static void btrfs_submit_direct(const struct iomap_iter *iter,
submit_len = dio_bio->bi_iter.bi_size;
do {
- logical = start_sector << 9;
- em = btrfs_get_chunk_map(fs_info, logical, submit_len);
- if (IS_ERR(em)) {
- status = errno_to_blk_status(PTR_ERR(em));
- em = NULL;
- goto out_err_em;
- }
- ret = btrfs_get_io_geometry(fs_info, em, btrfs_op(dio_bio),
- logical, &geom);
- if (ret) {
- status = errno_to_blk_status(ret);
- goto out_err_em;
+ struct block_device *bdev;
+
+ bdev = btrfs_get_stripe_info(fs_info, btrfs_op(dio_bio),
+ start_sector << 9, submit_len, &len);
+ if (IS_ERR(bdev)) {
+ status = errno_to_blk_status(PTR_ERR(bdev));
+ goto out_err;
}
- clone_len = min(submit_len, geom.len);
+ clone_len = min(submit_len, len);
ASSERT(clone_len <= UINT_MAX);
/*
@@ -8044,20 +8036,16 @@ static void btrfs_submit_direct(const struct iomap_iter *iter,
bio_put(bio);
if (submit_len > 0)
refcount_dec(&dip->refs);
- goto out_err_em;
+ goto out_err;
}
dio_data->submitted += clone_len;
clone_offset += clone_len;
start_sector += clone_len >> 9;
file_offset += clone_len;
-
- free_extent_map(em);
} while (submit_len > 0);
return;
-out_err_em:
- free_extent_map(em);
out_err:
dip->dio_bio->bi_status = status;
btrfs_dio_private_put(dip);
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 7392b9f2a3323..f70bb3569a7ae 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -6301,6 +6301,21 @@ static bool need_full_stripe(enum btrfs_map_op op)
return (op == BTRFS_MAP_WRITE || op == BTRFS_MAP_GET_READ_MIRRORS);
}
+struct btrfs_io_geometry {
+ /* remaining bytes before crossing a stripe */
+ u64 len;
+ /* offset of logical address in chunk */
+ u64 offset;
+ /* length of single IO stripe */
+ u64 stripe_len;
+ /* number of stripe where address falls */
+ u64 stripe_nr;
+ /* offset of address in stripe */
+ u64 stripe_offset;
+ /* offset of raid56 stripe into the chunk */
+ u64 raid56_stripe_offset;
+};
+
/*
* Calculate the geometry of a particular (address, len) tuple. This
* information is used to calculate how big a particular bio can get before it
@@ -6315,9 +6330,10 @@ static bool need_full_stripe(enum btrfs_map_op op)
* Returns < 0 in case a chunk for the given logical address cannot be found,
* usually shouldn't happen unless @logical is corrupted, 0 otherwise.
*/
-int btrfs_get_io_geometry(struct btrfs_fs_info *fs_info, struct extent_map *em,
- enum btrfs_map_op op, u64 logical,
- struct btrfs_io_geometry *io_geom)
+static int btrfs_get_io_geometry(struct btrfs_fs_info *fs_info,
+ struct extent_map *em,
+ enum btrfs_map_op op, u64 logical,
+ struct btrfs_io_geometry *io_geom)
{
struct map_lookup *map;
u64 len;
@@ -6394,6 +6410,28 @@ int btrfs_get_io_geometry(struct btrfs_fs_info *fs_info, struct extent_map *em,
return 0;
}
+struct block_device *btrfs_get_stripe_info(struct btrfs_fs_info *fs_info,
+ enum btrfs_map_op op, u64 logical, u64 len, u64 *lenp)
+{
+ struct btrfs_io_geometry geom;
+ struct block_device *bdev;
+ struct extent_map *em;
+ int ret;
+
+ em = btrfs_get_chunk_map(fs_info, logical, len);
+ if (IS_ERR(em))
+ return ERR_CAST(em);
+
+ bdev = em->map_lookup->stripes[0].dev->bdev;
+
+ ret = btrfs_get_io_geometry(fs_info, em, op, logical, &geom);
+ free_extent_map(em);
+ if (ret < 0)
+ return ERR_PTR(ret);
+ *lenp = geom.len;
+ return bdev;
+}
+
static int __btrfs_map_block(struct btrfs_fs_info *fs_info,
enum btrfs_map_op op, u64 logical, u64 *length,
struct btrfs_io_context **bioc_ret, struct btrfs_bio *bbio,
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index 5b0e7602434b0..c6425760f69da 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -17,21 +17,6 @@ extern struct mutex uuid_mutex;
#define BTRFS_STRIPE_LEN SZ_64K
-struct btrfs_io_geometry {
- /* remaining bytes before crossing a stripe */
- u64 len;
- /* offset of logical address in chunk */
- u64 offset;
- /* length of single IO stripe */
- u64 stripe_len;
- /* number of stripe where address falls */
- u64 stripe_nr;
- /* offset of address in stripe */
- u64 stripe_offset;
- /* offset of raid56 stripe into the chunk */
- u64 raid56_stripe_offset;
-};
-
/*
* Use sequence counter to get consistent device stat data on
* 32-bit processors.
@@ -520,9 +505,8 @@ int btrfs_map_block(struct btrfs_fs_info *fs_info, enum btrfs_map_op op,
int btrfs_map_sblock(struct btrfs_fs_info *fs_info, enum btrfs_map_op op,
u64 logical, u64 *length,
struct btrfs_io_context **bioc_ret);
-int btrfs_get_io_geometry(struct btrfs_fs_info *fs_info, struct extent_map *map,
- enum btrfs_map_op op, u64 logical,
- struct btrfs_io_geometry *io_geom);
+struct block_device *btrfs_get_stripe_info(struct btrfs_fs_info *fs_info,
+ enum btrfs_map_op op, u64 logical, u64 length, u64 *lenp);
int btrfs_read_sys_array(struct btrfs_fs_info *fs_info);
int btrfs_read_chunk_tree(struct btrfs_fs_info *fs_info);
struct btrfs_block_group *btrfs_create_chunk(struct btrfs_trans_handle *trans,
--
2.30.2
