bcache in userspace; userspace fsck

1 files changed, 96 insertions, 0 deletions

diff --git a/libbcache/fs-io.h b/libbcache/fs-io.h
new file mode 100644
index 0000000..d598bc8
--- /dev/null
+++ b/libbcache/fs-io.h
@@ -0,0 +1,96 @@
+#ifndef _BCACHE_FS_IO_H
+#define _BCACHE_FS_IO_H
+
+#include "buckets.h"
+#include <linux/uio.h>
+
+int bch_set_page_dirty(struct page *);
+
+int bch_writepage(struct page *, struct writeback_control *);
+int bch_readpage(struct file *, struct page *);
+
+int bch_writepages(struct address_space *, struct writeback_control *);
+int bch_readpages(struct file *, struct address_space *,
+		  struct list_head *, unsigned);
+
+int bch_write_begin(struct file *, struct address_space *, loff_t,
+		    unsigned, unsigned, struct page **, void **);
+int bch_write_end(struct file *, struct address_space *, loff_t,
+		  unsigned, unsigned, struct page *, void *);
+
+ssize_t bch_direct_IO(struct kiocb *, struct iov_iter *);
+
+ssize_t bch_write_iter(struct kiocb *, struct iov_iter *);
+
+int bch_fsync(struct file *, loff_t, loff_t, int);
+
+int bch_truncate(struct inode *, struct iattr *);
+long bch_fallocate_dispatch(struct file *, int, loff_t, loff_t);
+
+loff_t bch_llseek(struct file *, loff_t, int);
+
+int bch_page_mkwrite(struct vm_area_struct *, struct vm_fault *);
+void bch_invalidatepage(struct page *, unsigned int, unsigned int);
+int bch_releasepage(struct page *, gfp_t);
+int bch_migrate_page(struct address_space *, struct page *,
+		     struct page *, enum migrate_mode);
+
+struct i_sectors_hook {
+	struct extent_insert_hook	hook;
+	s64				sectors;
+	struct bch_inode_info		*ei;
+};
+
+struct bchfs_write_op {
+	struct bch_inode_info	*ei;
+	s64			sectors_added;
+	bool			is_dio;
+	u64			new_i_size;
+	struct bch_write_op	op;
+};
+
+struct bch_writepage_io {
+	struct closure		cl;
+
+	struct bchfs_write_op	op;
+
+	/* must come last: */
+	struct bch_write_bio	bio;
+};
+
+extern struct bio_set *bch_writepage_bioset;
+
+struct dio_write {
+	struct closure		cl;
+	struct kiocb		*req;
+	struct cache_set	*c;
+	long			written;
+	long			error;
+	loff_t			offset;
+
+	struct disk_reservation	res;
+
+	struct iovec		*iovec;
+	struct iovec		inline_vecs[UIO_FASTIOV];
+	struct iov_iter		iter;
+
+	struct mm_struct	*mm;
+
+	struct bchfs_write_op	iop;
+
+	/* must be last: */
+	struct bch_write_bio	bio;
+};
+
+extern struct bio_set *bch_dio_write_bioset;
+
+struct dio_read {
+	struct closure		cl;
+	struct kiocb		*req;
+	long			ret;
+	struct bch_read_bio	rbio;
+};
+
+extern struct bio_set *bch_dio_read_bioset;
+
+#endif /* _BCACHE_FS_IO_H */