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Diffstat (limited to 'fs/btrfs/ordered-data.h')
-rw-r--r--fs/btrfs/ordered-data.h109
1 files changed, 74 insertions, 35 deletions
diff --git a/fs/btrfs/ordered-data.h b/fs/btrfs/ordered-data.h
index 8ac365492a3..246897058ef 100644
--- a/fs/btrfs/ordered-data.h
+++ b/fs/btrfs/ordered-data.h
@@ -26,18 +26,6 @@ struct btrfs_ordered_inode_tree {
struct rb_node *last;
};
-/*
- * these are used to collect checksums done just before bios submission.
- * They are attached via a list into the ordered extent, and
- * checksum items are inserted into the tree after all the blocks in
- * the ordered extent are on disk
- */
-struct btrfs_sector_sum {
- /* bytenr on disk */
- u64 bytenr;
- u32 sum;
-};
-
struct btrfs_ordered_sum {
/* bytenr is the start of this extent on disk */
u64 bytenr;
@@ -45,10 +33,10 @@ struct btrfs_ordered_sum {
/*
* this is the length in bytes covered by the sums array below.
*/
- unsigned long len;
+ int len;
struct list_head list;
- /* last field is a variable length array of btrfs_sector_sums */
- struct btrfs_sector_sum sums[];
+ /* last field is a variable length array of csums */
+ u32 sums[];
};
/*
@@ -68,12 +56,21 @@ struct btrfs_ordered_sum {
#define BTRFS_ORDERED_NOCOW 2 /* set when we want to write in place */
-#define BTRFS_ORDERED_COMPRESSED 3 /* writing a compressed extent */
+#define BTRFS_ORDERED_COMPRESSED 3 /* writing a zlib compressed extent */
#define BTRFS_ORDERED_PREALLOC 4 /* set when writing to prealloced extent */
#define BTRFS_ORDERED_DIRECT 5 /* set when we're doing DIO with this extent */
+#define BTRFS_ORDERED_IOERR 6 /* We had an io error when writing this out */
+
+#define BTRFS_ORDERED_UPDATED_ISIZE 7 /* indicates whether this ordered extent
+ * has done its due diligence in updating
+ * the isize. */
+#define BTRFS_ORDERED_LOGGED_CSUM 8 /* We've logged the csums on this ordered
+ ordered extent */
+#define BTRFS_ORDERED_TRUNCATED 9 /* Set when we have to truncate an extent */
+
struct btrfs_ordered_extent {
/* logical offset in the file */
u64 file_offset;
@@ -90,9 +87,28 @@ struct btrfs_ordered_extent {
/* number of bytes that still need writing */
u64 bytes_left;
+ /* number of bytes that still need csumming */
+ u64 csum_bytes_left;
+
+ /*
+ * the end of the ordered extent which is behind it but
+ * didn't update disk_i_size. Please see the comment of
+ * btrfs_ordered_update_i_size();
+ */
+ u64 outstanding_isize;
+
+ /*
+ * If we get truncated we need to adjust the file extent we enter for
+ * this ordered extent so that we do not expose stale data.
+ */
+ u64 truncated_len;
+
/* flags (described above) */
unsigned long flags;
+ /* compression algorithm */
+ int compress_type;
+
/* reference count */
atomic_t refs;
@@ -102,6 +118,9 @@ struct btrfs_ordered_extent {
/* list of checksums for insertion when the extent io is done */
struct list_head list;
+ /* If we need to wait on this to be done */
+ struct list_head log_list;
+
/* used to wait for the BTRFS_ORDERED_COMPLETE bit */
wait_queue_head_t wait;
@@ -110,8 +129,13 @@ struct btrfs_ordered_extent {
/* a per root list of all the pending ordered extents */
struct list_head root_extent_list;
-};
+ struct btrfs_work work;
+
+ struct completion completion;
+ struct btrfs_work flush_work;
+ struct list_head work_list;
+};
/*
* calculates the total size you need to allocate for an ordered sum
@@ -120,11 +144,8 @@ struct btrfs_ordered_extent {
static inline int btrfs_ordered_sum_size(struct btrfs_root *root,
unsigned long bytes)
{
- unsigned long num_sectors = (bytes + root->sectorsize - 1) /
- root->sectorsize;
- num_sectors++;
- return sizeof(struct btrfs_ordered_sum) +
- num_sectors * sizeof(struct btrfs_sector_sum);
+ int num_sectors = (int)DIV_ROUND_UP(bytes, root->sectorsize);
+ return sizeof(struct btrfs_ordered_sum) + num_sectors * sizeof(u32);
}
static inline void
@@ -135,19 +156,26 @@ btrfs_ordered_inode_tree_init(struct btrfs_ordered_inode_tree *t)
t->last = NULL;
}
-int btrfs_put_ordered_extent(struct btrfs_ordered_extent *entry);
-int btrfs_remove_ordered_extent(struct inode *inode,
+void btrfs_put_ordered_extent(struct btrfs_ordered_extent *entry);
+void btrfs_remove_ordered_extent(struct inode *inode,
struct btrfs_ordered_extent *entry);
int btrfs_dec_test_ordered_pending(struct inode *inode,
struct btrfs_ordered_extent **cached,
- u64 file_offset, u64 io_size);
+ u64 file_offset, u64 io_size, int uptodate);
+int btrfs_dec_test_first_ordered_pending(struct inode *inode,
+ struct btrfs_ordered_extent **cached,
+ u64 *file_offset, u64 io_size,
+ int uptodate);
int btrfs_add_ordered_extent(struct inode *inode, u64 file_offset,
u64 start, u64 len, u64 disk_len, int type);
int btrfs_add_ordered_extent_dio(struct inode *inode, u64 file_offset,
u64 start, u64 len, u64 disk_len, int type);
-int btrfs_add_ordered_sum(struct inode *inode,
- struct btrfs_ordered_extent *entry,
- struct btrfs_ordered_sum *sum);
+int btrfs_add_ordered_extent_compress(struct inode *inode, u64 file_offset,
+ u64 start, u64 len, u64 disk_len,
+ int type, int compress_type);
+void btrfs_add_ordered_sum(struct inode *inode,
+ struct btrfs_ordered_extent *entry,
+ struct btrfs_ordered_sum *sum);
struct btrfs_ordered_extent *btrfs_lookup_ordered_extent(struct inode *inode,
u64 file_offset);
void btrfs_start_ordered_extent(struct inode *inode,
@@ -160,11 +188,22 @@ struct btrfs_ordered_extent *btrfs_lookup_ordered_range(struct inode *inode,
u64 len);
int btrfs_ordered_update_i_size(struct inode *inode, u64 offset,
struct btrfs_ordered_extent *ordered);
-int btrfs_find_ordered_sum(struct inode *inode, u64 offset, u64 disk_bytenr, u32 *sum);
-int btrfs_run_ordered_operations(struct btrfs_root *root, int wait);
-int btrfs_add_ordered_operation(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- struct inode *inode);
-int btrfs_wait_ordered_extents(struct btrfs_root *root,
- int nocow_only, int delay_iput);
+int btrfs_find_ordered_sum(struct inode *inode, u64 offset, u64 disk_bytenr,
+ u32 *sum, int len);
+int btrfs_run_ordered_operations(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root, int wait);
+void btrfs_add_ordered_operation(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ struct inode *inode);
+int btrfs_wait_ordered_extents(struct btrfs_root *root, int nr);
+void btrfs_wait_ordered_roots(struct btrfs_fs_info *fs_info, int nr);
+void btrfs_get_logged_extents(struct inode *inode,
+ struct list_head *logged_list);
+void btrfs_put_logged_extents(struct list_head *logged_list);
+void btrfs_submit_logged_extents(struct list_head *logged_list,
+ struct btrfs_root *log);
+void btrfs_wait_logged_extents(struct btrfs_root *log, u64 transid);
+void btrfs_free_logged_extents(struct btrfs_root *log, u64 transid);
+int __init ordered_data_init(void);
+void ordered_data_exit(void);
#endif
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 01:21:09 +0000