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-rw-r--r--fs/btrfs/btrfs_inode.h21
-rw-r--r--fs/btrfs/ctree.h4
-rw-r--r--fs/btrfs/disk-io.c5
-rw-r--r--fs/btrfs/extent_io.c125
-rw-r--r--fs/btrfs/extent_io.h10
-rw-r--r--fs/btrfs/file-item.c81
-rw-r--r--fs/btrfs/inode.c85
-rw-r--r--fs/btrfs/volumes.h7
8 files changed, 174 insertions, 164 deletions
diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h
index 08b286b2a2c5..d0ae226926ee 100644
--- a/fs/btrfs/btrfs_inode.h
+++ b/fs/btrfs/btrfs_inode.h
@@ -218,6 +218,27 @@ static inline int btrfs_inode_in_log(struct inode *inode, u64 generation)
return 0;
}
+struct btrfs_dio_private {
+ struct inode *inode;
+ u64 logical_offset;
+ u64 disk_bytenr;
+ u64 bytes;
+ void *private;
+
+ /* number of bios pending for this dio */
+ atomic_t pending_bios;
+
+ /* IO errors */
+ int errors;
+
+ /* orig_bio is our btrfs_io_bio */
+ struct bio *orig_bio;
+
+ /* dio_bio came from fs/direct-io.c */
+ struct bio *dio_bio;
+ u8 csum[0];
+};
+
/*
* Disable DIO read nolock optimization, so new dio readers will be forced
* to grab i_mutex. It is used to avoid the endless truncate due to
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index dda60e9f6b89..cbb1263752f8 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -3556,12 +3556,14 @@ int btrfs_find_name_in_ext_backref(struct btrfs_path *path,
struct btrfs_inode_extref **extref_ret);
/* file-item.c */
+struct btrfs_dio_private;
int btrfs_del_csums(struct btrfs_trans_handle *trans,
struct btrfs_root *root, u64 bytenr, u64 len);
int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode,
struct bio *bio, u32 *dst);
int btrfs_lookup_bio_sums_dio(struct btrfs_root *root, struct inode *inode,
- struct bio *bio, u64 logical_offset);
+ struct btrfs_dio_private *dip, struct bio *bio,
+ u64 logical_offset);
int btrfs_insert_file_extent(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
u64 objectid, u64 pos,
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 56fcf8439f42..8e2eee67c3a8 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -576,8 +576,9 @@ static noinline int check_leaf(struct btrfs_root *root,
return 0;
}
-static int btree_readpage_end_io_hook(struct page *page, u64 start, u64 end,
- struct extent_state *state, int mirror)
+static int btree_readpage_end_io_hook(struct btrfs_io_bio *io_bio,
+ u64 phy_offset, struct page *page,
+ u64 start, u64 end, int mirror)
{
struct extent_io_tree *tree;
u64 found_start;
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 0297f6f4d4c3..6fbacfabb660 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -1837,64 +1837,6 @@ out:
return ret;
}
-void extent_cache_csums_dio(struct extent_io_tree *tree, u64 start, u32 csums[],
- int count)
-{
- struct rb_node *node;
- struct extent_state *state;
-
- spin_lock(&tree->lock);
- /*
- * this search will find all the extents that end after
- * our range starts.
- */
- node = tree_search(tree, start);
- BUG_ON(!node);
-
- state = rb_entry(node, struct extent_state, rb_node);
- BUG_ON(state->start != start);
-
- while (count) {
- state->private = *csums++;
- count--;
- state = next_state(state);
- }
- spin_unlock(&tree->lock);
-}
-
-static inline u64 __btrfs_get_bio_offset(struct bio *bio, int bio_index)
-{
- struct bio_vec *bvec = bio->bi_io_vec + bio_index;
-
- return page_offset(bvec->bv_page) + bvec->bv_offset;
-}
-
-void extent_cache_csums(struct extent_io_tree *tree, struct bio *bio, int bio_index,
- u32 csums[], int count)
-{
- struct rb_node *node;
- struct extent_state *state = NULL;
- u64 start;
-
- spin_lock(&tree->lock);
- do {
- start = __btrfs_get_bio_offset(bio, bio_index);
- if (state == NULL || state->start != start) {
- node = tree_search(tree, start);
- BUG_ON(!node);
-
- state = rb_entry(node, struct extent_state, rb_node);
- BUG_ON(state->start != start);
- }
- state->private = *csums++;
- count--;
- bio_index++;
-
- state = next_state(state);
- } while (count);
- spin_unlock(&tree->lock);
-}
-
int get_state_private(struct extent_io_tree *tree, u64 start, u64 *private)
{
struct rb_node *node;
@@ -2201,8 +2143,9 @@ out:
* needed
*/
-static int bio_readpage_error(struct bio *failed_bio, struct page *page,
- u64 start, u64 end, int failed_mirror)
+static int bio_readpage_error(struct bio *failed_bio, u64 phy_offset,
+ struct page *page, u64 start, u64 end,
+ int failed_mirror)
{
struct io_failure_record *failrec = NULL;
u64 private;
@@ -2211,8 +2154,9 @@ static int bio_readpage_error(struct bio *failed_bio, struct page *page,
struct extent_io_tree *failure_tree = &BTRFS_I(inode)->io_failure_tree;
struct extent_io_tree *tree = &BTRFS_I(inode)->io_tree;
struct extent_map_tree *em_tree = &BTRFS_I(inode)->extent_tree;
- struct extent_state *state;
struct bio *bio;
+ struct btrfs_io_bio *btrfs_failed_bio;
+ struct btrfs_io_bio *btrfs_bio;
int num_copies;
int ret;
int read_mode;
@@ -2302,13 +2246,6 @@ static int bio_readpage_error(struct bio *failed_bio, struct page *page,
return -EIO;
}
- spin_lock(&tree->lock);
- state = find_first_extent_bit_state(tree, failrec->start,
- EXTENT_LOCKED);
- if (state && state->start != failrec->start)
- state = NULL;
- spin_unlock(&tree->lock);
-
/*
* there are two premises:
* a) deliver good data to the caller
@@ -2345,9 +2282,8 @@ static int bio_readpage_error(struct bio *failed_bio, struct page *page,
read_mode = READ_SYNC;
}
- if (!state || failrec->this_mirror > num_copies) {
- pr_debug("bio_readpage_error: (fail) state=%p, num_copies=%d, "
- "next_mirror %d, failed_mirror %d\n", state,
+ if (failrec->this_mirror > num_copies) {
+ pr_debug("bio_readpage_error: (fail) num_copies=%d, next_mirror %d, failed_mirror %d\n",
num_copies, failrec->this_mirror, failed_mirror);
free_io_failure(inode, failrec, 0);
return -EIO;
@@ -2358,12 +2294,24 @@ static int bio_readpage_error(struct bio *failed_bio, struct page *page,
free_io_failure(inode, failrec, 0);
return -EIO;
}
- bio->bi_private = state;
bio->bi_end_io = failed_bio->bi_end_io;
bio->bi_sector = failrec->logical >> 9;
bio->bi_bdev = BTRFS_I(inode)->root->fs_info->fs_devices->latest_bdev;
bio->bi_size = 0;
+ btrfs_failed_bio = btrfs_io_bio(failed_bio);
+ if (btrfs_failed_bio->csum) {
+ struct btrfs_fs_info *fs_info = BTRFS_I(inode)->root->fs_info;
+ u16 csum_size = btrfs_super_csum_size(fs_info->super_copy);
+
+ btrfs_bio = btrfs_io_bio(bio);
+ btrfs_bio->csum = btrfs_bio->csum_inline;
+ phy_offset >>= inode->i_sb->s_blocksize_bits;
+ phy_offset *= csum_size;
+ memcpy(btrfs_bio->csum, btrfs_failed_bio->csum + phy_offset,
+ csum_size);
+ }
+
bio_add_page(bio, page, failrec->len, start - page_offset(page));
pr_debug("bio_readpage_error: submitting new read[%#x] to "
@@ -2462,9 +2410,12 @@ static void end_bio_extent_readpage(struct bio *bio, int err)
int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags);
struct bio_vec *bvec_end = bio->bi_io_vec + bio->bi_vcnt - 1;
struct bio_vec *bvec = bio->bi_io_vec;
+ struct btrfs_io_bio *io_bio = btrfs_io_bio(bio);
struct extent_io_tree *tree;
+ u64 offset = 0;
u64 start;
u64 end;
+ u64 len;
int mirror;
int ret;
@@ -2475,7 +2426,6 @@ static void end_bio_extent_readpage(struct bio *bio, int err)
struct page *page = bvec->bv_page;
struct extent_state *cached = NULL;
struct extent_state *state;
- struct btrfs_io_bio *io_bio = btrfs_io_bio(bio);
struct inode *inode = page->mapping->host;
pr_debug("end_bio_extent_readpage: bi_sector=%llu, err=%d, "
@@ -2496,6 +2446,7 @@ static void end_bio_extent_readpage(struct bio *bio, int err)
start = page_offset(page);
end = start + bvec->bv_offset + bvec->bv_len - 1;
+ len = bvec->bv_len;
if (++bvec <= bvec_end)
prefetchw(&bvec->bv_page->flags);
@@ -2514,8 +2465,9 @@ static void end_bio_extent_readpage(struct bio *bio, int err)
mirror = io_bio->mirror_num;
if (likely(uptodate && tree->ops &&
tree->ops->readpage_end_io_hook)) {
- ret = tree->ops->readpage_end_io_hook(page, start, end,
- state, mirror);
+ ret = tree->ops->readpage_end_io_hook(io_bio, offset,
+ page, start, end,
+ mirror);
if (ret)
uptodate = 0;
else
@@ -2541,7 +2493,8 @@ static void end_bio_extent_readpage(struct bio *bio, int err)
* can't handle the error it will return -EIO and we
* remain responsible for that page.
*/
- ret = bio_readpage_error(bio, page, start, end, mirror);
+ ret = bio_readpage_error(bio, offset, page, start, end,
+ mirror);
if (ret == 0) {
uptodate =
test_bit(BIO_UPTODATE, &bio->bi_flags);
@@ -2573,8 +2526,11 @@ readpage_ok:
SetPageError(page);
}
unlock_page(page);
+ offset += len;
} while (bvec <= bvec_end);
+ if (io_bio->end_io)
+ io_bio->end_io(io_bio, err);
bio_put(bio);
}
@@ -2586,6 +2542,7 @@ struct bio *
btrfs_bio_alloc(struct block_device *bdev, u64 first_sector, int nr_vecs,
gfp_t gfp_flags)
{
+ struct btrfs_io_bio *btrfs_bio;
struct bio *bio;
bio = bio_alloc_bioset(gfp_flags, nr_vecs, btrfs_bioset);
@@ -2601,6 +2558,10 @@ btrfs_bio_alloc(struct block_device *bdev, u64 first_sector, int nr_vecs,
bio->bi_size = 0;
bio->bi_bdev = bdev;
bio->bi_sector = first_sector;
+ btrfs_bio = btrfs_io_bio(bio);
+ btrfs_bio->csum = NULL;
+ btrfs_bio->csum_allocated = NULL;
+ btrfs_bio->end_io = NULL;
}
return bio;
}
@@ -2614,7 +2575,17 @@ struct bio *btrfs_bio_clone(struct bio *bio, gfp_t gfp_mask)
/* this also allocates from the btrfs_bioset */
struct bio *btrfs_io_bio_alloc(gfp_t gfp_mask, unsigned int nr_iovecs)
{
- return bio_alloc_bioset(gfp_mask, nr_iovecs, btrfs_bioset);
+ struct btrfs_io_bio *btrfs_bio;
+ struct bio *bio;
+
+ bio = bio_alloc_bioset(gfp_mask, nr_iovecs, btrfs_bioset);
+ if (bio) {
+ btrfs_bio = btrfs_io_bio(bio);
+ btrfs_bio->csum = NULL;
+ btrfs_bio->csum_allocated = NULL;
+ btrfs_bio->end_io = NULL;
+ }
+ return bio;
}
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index 3b8c4e26e1da..f7544afefdb9 100644
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h
@@ -62,6 +62,7 @@
struct extent_state;
struct btrfs_root;
+struct btrfs_io_bio;
typedef int (extent_submit_bio_hook_t)(struct inode *inode, int rw,
struct bio *bio, int mirror_num,
@@ -77,8 +78,9 @@ struct extent_io_ops {
size_t size, struct bio *bio,
unsigned long bio_flags);
int (*readpage_io_failed_hook)(struct page *page, int failed_mirror);
- int (*readpage_end_io_hook)(struct page *page, u64 start, u64 end,
- struct extent_state *state, int mirror);
+ int (*readpage_end_io_hook)(struct btrfs_io_bio *io_bio, u64 phy_offset,
+ struct page *page, u64 start, u64 end,
+ int mirror);
int (*writepage_end_io_hook)(struct page *page, u64 start, u64 end,
struct extent_state *state, int uptodate);
void (*set_bit_hook)(struct inode *inode, struct extent_state *state,
@@ -262,10 +264,6 @@ int extent_readpages(struct extent_io_tree *tree,
int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
__u64 start, __u64 len, get_extent_t *get_extent);
int set_state_private(struct extent_io_tree *tree, u64 start, u64 private);
-void extent_cache_csums_dio(struct extent_io_tree *tree, u64 start, u32 csums[],
- int count);
-void extent_cache_csums(struct extent_io_tree *tree, struct bio *bio,
- int bvec_index, u32 csums[], int count);
int get_state_private(struct extent_io_tree *tree, u64 start, u64 *private);
void set_page_extent_mapped(struct page *page);
diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c
index a7bfc9541803..f87d09a0dfaa 100644
--- a/fs/btrfs/file-item.c
+++ b/fs/btrfs/file-item.c
@@ -23,6 +23,7 @@
#include "ctree.h"
#include "disk-io.h"
#include "transaction.h"
+#include "volumes.h"
#include "print-tree.h"
#define __MAX_CSUM_ITEMS(r, size) ((unsigned long)(((BTRFS_LEAF_DATA_SIZE(r) - \
@@ -152,28 +153,54 @@ int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans,
return ret;
}
+static void btrfs_io_bio_endio_readpage(struct btrfs_io_bio *bio, int err)
+{
+ kfree(bio->csum_allocated);
+}
+
static int __btrfs_lookup_bio_sums(struct btrfs_root *root,
struct inode *inode, struct bio *bio,
u64 logical_offset, u32 *dst, int dio)
{
- u32 sum[16];
- int len;
struct bio_vec *bvec = bio->bi_io_vec;
- int bio_index = 0;
+ struct btrfs_io_bio *btrfs_bio = btrfs_io_bio(bio);
+ struct btrfs_csum_item *item = NULL;
+ struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree;
+ struct btrfs_path *path;
+ u8 *csum;
u64 offset = 0;
u64 item_start_offset = 0;
u64 item_last_offset = 0;
u64 disk_bytenr;
u32 diff;
- u16 csum_size = btrfs_super_csum_size(root->fs_info->super_copy);
+ int nblocks;
+ int bio_index = 0;
int count;
- struct btrfs_path *path;
- struct btrfs_csum_item *item = NULL;
- struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree;
+ u16 csum_size = btrfs_super_csum_size(root->fs_info->super_copy);
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
+
+ nblocks = bio->bi_size >> inode->i_sb->s_blocksize_bits;
+ if (!dst) {
+ if (nblocks * csum_size > BTRFS_BIO_INLINE_CSUM_SIZE) {
+ btrfs_bio->csum_allocated = kmalloc(nblocks * csum_size,
+ GFP_NOFS);
+ if (!btrfs_bio->csum_allocated) {
+ btrfs_free_path(path);
+ return -ENOMEM;
+ }
+ btrfs_bio->csum = btrfs_bio->csum_allocated;
+ btrfs_bio->end_io = btrfs_io_bio_endio_readpage;
+ } else {
+ btrfs_bio->csum = btrfs_bio->csum_inline;
+ }
+ csum = btrfs_bio->csum;
+ } else {
+ csum = (u8 *)dst;
+ }
+
if (bio->bi_size > PAGE_CACHE_SIZE * 8)
path->reada = 2;
@@ -194,11 +221,10 @@ static int __btrfs_lookup_bio_sums(struct btrfs_root *root,
if (dio)
offset = logical_offset;
while (bio_index < bio->bi_vcnt) {
- len = min_t(int, ARRAY_SIZE(sum), bio->bi_vcnt - bio_index);
if (!dio)
offset = page_offset(bvec->bv_page) + bvec->bv_offset;
- count = btrfs_find_ordered_sum(inode, offset, disk_bytenr, sum,
- len);
+ count = btrfs_find_ordered_sum(inode, offset, disk_bytenr,
+ (u32 *)csum, nblocks);
if (count)
goto found;
@@ -213,7 +239,7 @@ static int __btrfs_lookup_bio_sums(struct btrfs_root *root,
path, disk_bytenr, 0);
if (IS_ERR(item)) {
count = 1;
- sum[0] = 0;
+ memset(csum, 0, csum_size);
if (BTRFS_I(inode)->root->root_key.objectid ==
BTRFS_DATA_RELOC_TREE_OBJECTID) {
set_extent_bits(io_tree, offset,
@@ -249,23 +275,14 @@ static int __btrfs_lookup_bio_sums(struct btrfs_root *root,
diff = disk_bytenr - item_start_offset;
diff = diff / root->sectorsize;
diff = diff * csum_size;
- count = min_t(int, len, (item_last_offset - disk_bytenr) >>
- inode->i_sb->s_blocksize_bits);
- read_extent_buffer(path->nodes[0], sum,
+ count = min_t(int, nblocks, (item_last_offset - disk_bytenr) >>
+ inode->i_sb->s_blocksize_bits);
+ read_extent_buffer(path->nodes[0], csum,
((unsigned long)item) + diff,
csum_size * count);
found:
- if (dst) {
- memcpy(dst, sum, count * csum_size);
- dst += count;
- } else {
- if (dio)
- extent_cache_csums_dio(io_tree, offset, sum,
- count);
- else
- extent_cache_csums(io_tree, bio, bio_index, sum,
- count);
- }
+ csum += count * csum_size;
+ nblocks -= count;
while (count--) {
disk_bytenr += bvec->bv_len;
offset += bvec->bv_len;
@@ -284,9 +301,19 @@ int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode,
}
int btrfs_lookup_bio_sums_dio(struct btrfs_root *root, struct inode *inode,
- struct bio *bio, u64 offset)
+ struct btrfs_dio_private *dip, struct bio *bio,
+ u64 offset)
{
- return __btrfs_lookup_bio_sums(root, inode, bio, offset, NULL, 1);
+ int len = (bio->bi_sector << 9) - dip->disk_bytenr;
+ u16 csum_size = btrfs_super_csum_size(root->fs_info->super_copy);
+ int ret;
+
+ len >>= inode->i_sb->s_blocksize_bits;
+ len *= csum_size;
+
+ ret = __btrfs_lookup_bio_sums(root, inode, bio, offset,
+ (u32 *)(dip->csum + len), 1);
+ return ret;
}
int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end,
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index d3280b2b7592..b47330c8e02c 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -2826,16 +2826,16 @@ static int btrfs_writepage_end_io_hook(struct page *page, u64 start, u64 end,
* if there's a match, we allow the bio to finish. If not, the code in
* extent_io.c will try to find good copies for us.
*/
-static int btrfs_readpage_end_io_hook(struct page *page, u64 start, u64 end,
- struct extent_state *state, int mirror)
+static int btrfs_readpage_end_io_hook(struct btrfs_io_bio *io_bio,
+ u64 phy_offset, struct page *page,
+ u64 start, u64 end, int mirror)
{
size_t offset = start - page_offset(page);
struct inode *inode = page->mapping->host;
struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree;
char *kaddr;
- u64 private = ~(u32)0;
- int ret;
struct btrfs_root *root = BTRFS_I(inode)->root;
+ u32 csum_expected;
u32 csum = ~(u32)0;
static DEFINE_RATELIMIT_STATE(_rs, DEFAULT_RATELIMIT_INTERVAL,
DEFAULT_RATELIMIT_BURST);
@@ -2855,19 +2855,13 @@ static int btrfs_readpage_end_io_hook(struct page *page, u64 start, u64 end,
return 0;
}
- if (state && state->start == start) {
- private = state->private;
- ret = 0;
- } else {
- ret = get_state_private(io_tree, start, &private);
- }
- kaddr = kmap_atomic(page);
- if (ret)
- goto zeroit;
+ phy_offset >>= inode->i_sb->s_blocksize_bits;
+ csum_expected = *(((u32 *)io_bio->csum) + phy_offset);
+ kaddr = kmap_atomic(page);
csum = btrfs_csum_data(kaddr + offset, csum, end - start + 1);
btrfs_csum_final(csum, (char *)&csum);
- if (csum != private)
+ if (csum != csum_expected)
goto zeroit;
kunmap_atomic(kaddr);
@@ -2876,14 +2870,13 @@ good:
zeroit:
if (__ratelimit(&_rs))
- btrfs_info(root->fs_info, "csum failed ino %llu off %llu csum %u private %llu",
+ btrfs_info(root->fs_info, "csum failed ino %llu off %llu csum %u expected csum %u",
(unsigned long long)btrfs_ino(page->mapping->host),
- (unsigned long long)start, csum,
- (unsigned long long)private);
+ (unsigned long long)start, csum, csum_expected);
memset(kaddr + offset, 1, end - start + 1);
flush_dcache_page(page);
kunmap_atomic(kaddr);
- if (private == 0)
+ if (csum_expected == 0)
return 0;
return -EIO;
}
@@ -6812,26 +6805,6 @@ unlock_err:
return ret;
}
-struct btrfs_dio_private {
- struct inode *inode;
- u64 logical_offset;
- u64 disk_bytenr;
- u64 bytes;
- void *private;
-
- /* number of bios pending for this dio */
- atomic_t pending_bios;
-
- /* IO errors */
- int errors;
-
- /* orig_bio is our btrfs_io_bio */
- struct bio *orig_bio;
-
- /* dio_bio came from fs/direct-io.c */
- struct bio *dio_bio;
-};
-
static void btrfs_endio_direct_read(struct bio *bio, int err)
{
struct btrfs_dio_private *dip = bio->bi_private;
@@ -6840,6 +6813,8 @@ static void btrfs_endio_direct_read(struct bio *bio, int err)
struct inode *inode = dip->inode;
struct btrfs_root *root = BTRFS_I(inode)->root;
struct bio *dio_bio;
+ u32 *csums = (u32 *)dip->csum;
+ int index = 0;
u64 start;
start = dip->logical_offset;
@@ -6848,12 +6823,8 @@ static void btrfs_endio_direct_read(struct bio *bio, int err)
struct page *page = bvec->bv_page;
char *kaddr;
u32 csum = ~(u32)0;
- u64 private = ~(u32)0;
unsigned long flags;
- if (get_state_private(&BTRFS_I(inode)->io_tree,
- start, &private))
- goto failed;
local_irq_save(flags);
kaddr = kmap_atomic(page);
csum = btrfs_csum_data(kaddr + bvec->bv_offset,
@@ -6863,18 +6834,18 @@ static void btrfs_endio_direct_read(struct bio *bio, int err)
local_irq_restore(flags);
flush_dcache_page(bvec->bv_page);
- if (csum != private) {
-failed:
- btrfs_err(root->fs_info, "csum failed ino %llu off %llu csum %u private %u",
- (unsigned long long)btrfs_ino(inode),
- (unsigned long long)start,
- csum, (unsigned)private);
+ if (csum != csums[index]) {
+ btrfs_err(root->fs_info, "csum failed ino %llu off %llu csum %u expected csum %u",
+ (unsigned long long)btrfs_ino(inode),
+ (unsigned long long)start,
+ csum, csums[index]);
err = -EIO;
}
}
start += bvec->bv_len;
bvec++;
+ index++;
} while (bvec <= bvec_end);
unlock_extent(&BTRFS_I(inode)->io_tree, dip->logical_offset,
@@ -6991,6 +6962,7 @@ static inline int __btrfs_submit_dio_bio(struct bio *bio, struct inode *inode,
int rw, u64 file_offset, int skip_sum,
int async_submit)
{
+ struct btrfs_dio_private *dip = bio->bi_private;
int write = rw & REQ_WRITE;
struct btrfs_root *root = BTRFS_I(inode)->root;
int ret;
@@ -7025,7 +6997,8 @@ static inline int __btrfs_submit_dio_bio(struct bio *bio, struct inode *inode,
if (ret)
goto err;
} else if (!skip_sum) {
- ret = btrfs_lookup_bio_sums_dio(root, inode, bio, file_offset);
+ ret = btrfs_lookup_bio_sums_dio(root, inode, dip, bio,
+ file_offset);
if (ret)
goto err;
}
@@ -7060,6 +7033,7 @@ static int btrfs_submit_direct_hook(int rw, struct btrfs_dio_private *dip,
bio_put(orig_bio);
return -EIO;
}
+
if (map_length >= orig_bio->bi_size) {
bio = orig_bio;
goto submit;
@@ -7155,19 +7129,28 @@ static void btrfs_submit_direct(int rw, struct bio *dio_bio,
struct btrfs_dio_private *dip;
struct bio *io_bio;
int skip_sum;
+ int sum_len;
int write = rw & REQ_WRITE;
int ret = 0;
+ u16 csum_size;
skip_sum = BTRFS_I(inode)->flags & BTRFS_INODE_NODATASUM;
io_bio = btrfs_bio_clone(dio_bio, GFP_NOFS);
-
if (!io_bio) {
ret = -ENOMEM;
goto free_ordered;
}
- dip = kmalloc(sizeof(*dip), GFP_NOFS);
+ if (!skip_sum && !write) {
+ csum_size = btrfs_super_csum_size(root->fs_info->super_copy);
+ sum_len = dio_bio->bi_size >> inode->i_sb->s_blocksize_bits;
+ sum_len *= csum_size;
+ } else {
+ sum_len = 0;
+ }
+
+ dip = kmalloc(sizeof(*dip) + sum_len, GFP_NOFS);
if (!dip) {
ret = -ENOMEM;
goto free_io_bio;
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index 86705583480d..08c44d9059b1 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -152,6 +152,8 @@ struct btrfs_fs_devices {
int rotating;
};
+#define BTRFS_BIO_INLINE_CSUM_SIZE 64
+
/*
* we need the mirror number and stripe index to be passed around
* the call chain while we are processing end_io (especially errors).
@@ -161,9 +163,14 @@ struct btrfs_fs_devices {
* we allocate are actually btrfs_io_bios. We'll cram as much of
* struct btrfs_bio as we can into this over time.
*/
+typedef void (btrfs_io_bio_end_io_t) (struct btrfs_io_bio *bio, int err);
struct btrfs_io_bio {
unsigned long mirror_num;
unsigned long stripe_index;
+ u8 *csum;
+ u8 csum_inline[BTRFS_BIO_INLINE_CSUM_SIZE];
+ u8 *csum_allocated;
+ btrfs_io_bio_end_io_t *end_io;
struct bio bio;
};
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-02 15:36:43 +0300