{
ext4_bdif_lock(bdev);
int r = bdev->bdif->bread(bdev, buf, blk_id, blk_cnt);
+ bdev->bdif->bread_ctr++;
ext4_bdif_unlock(bdev);
return r;
}
{
ext4_bdif_lock(bdev);
int r = bdev->bdif->bwrite(bdev, buf, blk_id, blk_cnt);
+ bdev->bdif->bwrite_ctr++;
ext4_bdif_unlock(bdev);
return r;
}
{
int r;
struct ext4_bcache *bc = bdev->bc;
- /*Only flushing unreferenced buffer is allowed.*/
- ext4_assert(!buf->refctr);
- if (ext4_bcache_test_flag(buf, BC_DIRTY)) {
+ if (ext4_bcache_test_flag(buf, BC_DIRTY) &&
+ ext4_bcache_test_flag(buf, BC_UPTODATE)) {
r = ext4_blocks_set_direct(bdev, buf->data, buf->lba, 1);
-
if (r) {
- if (buf->end_write)
+ if (buf->end_write) {
+ bc->dont_shake = true;
buf->end_write(bc, buf, r, buf->end_write_arg);
+ bc->dont_shake = false;
+ }
return r;
}
ext4_bcache_remove_dirty_node(bc, buf);
ext4_bcache_clear_flag(buf, BC_DIRTY);
- if (buf->end_write)
+ if (buf->end_write) {
+ bc->dont_shake = true;
buf->end_write(bc, buf, r, buf->end_write_arg);
-
+ bc->dont_shake = false;
+ }
}
return EOK;
}
+int ext4_block_flush_lba(struct ext4_blockdev *bdev, uint64_t lba)
+{
+ int r = EOK;
+ struct ext4_buf *buf;
+ struct ext4_block b;
+ buf = ext4_bcache_find_get(bdev->bc, &b, lba);
+ if (buf) {
+ r = ext4_block_flush_buf(bdev, buf);
+ ext4_bcache_free(bdev->bc, &b);
+ }
+ return r;
+}
+
int ext4_block_cache_shake(struct ext4_blockdev *bdev)
{
+ int r = EOK;
struct ext4_buf *buf;
+ if (bdev->bc->dont_shake)
+ return EOK;
+
while (!RB_EMPTY(&bdev->bc->lru_root) &&
ext4_bcache_is_full(bdev->bc)) {
buf = ext4_buf_lowest_lru(bdev->bc);
ext4_assert(buf);
if (ext4_bcache_test_flag(buf, BC_DIRTY)) {
- int r = ext4_block_flush_buf(bdev, buf);
+ r = ext4_block_flush_buf(bdev, buf);
if (r != EOK)
- return r;
+ break;
}
ext4_bcache_drop_buf(bdev->bc, buf);
}
- return EOK;
+ return r;
}
int ext4_block_get_noread(struct ext4_blockdev *bdev, struct ext4_block *b,
pba = (lba * bdev->lg_bsize + bdev->part_offset) / bdev->bdif->ph_bsize;
pb_cnt = bdev->lg_bsize / bdev->bdif->ph_bsize;
- bdev->bread_ctr++;
return ext4_bdif_bread(bdev, buf, pba, pb_cnt * cnt);
}
pba = (lba * bdev->lg_bsize + bdev->part_offset) / bdev->bdif->ph_bsize;
pb_cnt = bdev->lg_bsize / bdev->bdif->ph_bsize;
- bdev->bwrite_ctr++;
return ext4_bdif_bwrite(bdev, buf, pba, pb_cnt * cnt);
}
return r;
}
-int ext4_block_cache_write_back(struct ext4_blockdev *bdev, uint8_t on_off)
+int ext4_block_cache_flush(struct ext4_blockdev *bdev)
{
- int r;
- struct ext4_buf *buf;
+ while (!SLIST_EMPTY(&bdev->bc->dirty_list)) {
+ int r;
+ struct ext4_buf *buf = SLIST_FIRST(&bdev->bc->dirty_list);
+ ext4_assert(buf);
+ r = ext4_block_flush_buf(bdev, buf);
+ if (r != EOK)
+ return r;
+
+ }
+ return EOK;
+}
+int ext4_block_cache_write_back(struct ext4_blockdev *bdev, uint8_t on_off)
+{
if (on_off)
bdev->cache_write_back++;
if (bdev->cache_write_back)
return EOK;
- /*Flush all delayed cache blocks*/
- while (!SLIST_EMPTY(&bdev->bc->dirty_list)) {
-
- buf = SLIST_FIRST(&bdev->bc->dirty_list);
- ext4_assert(buf);
- r = ext4_block_flush_buf(bdev, buf);
- if (r != EOK)
- return r;
-
- }
- return EOK;
+ /*Flush data in all delayed cache blocks*/
+ return ext4_block_cache_flush(bdev);
}
/**