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Diffstat (limited to 'fs/btrfs/inode.c')
-rw-r--r--fs/btrfs/inode.c85
1 files changed, 34 insertions, 51 deletions
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;
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-02 17:33:58 +0300