bcachefs: Initial commit

Initially forked from drivers/md/bcache, bcachefs is a new copy-on-write
filesystem with every feature you could possibly want.

Website: https://bcachefs.org

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

1 files changed, 47 insertions, 0 deletions

diff --git a/fs/bcachefs/fs-io.h b/fs/bcachefs/fs-io.h
new file mode 100644
index 000000000000..2e4bfee877d9
--- /dev/null
+++ b/fs/bcachefs/fs-io.h
@@ -0,0 +1,47 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _BCACHEFS_FS_IO_H
+#define _BCACHEFS_FS_IO_H
+
+#ifndef NO_BCACHEFS_FS
+
+#include "buckets.h"
+#include "io_types.h"
+
+#include <linux/uio.h>
+
+bool bch2_dirty_folio(struct address_space *, struct folio *);
+
+int bch2_writepage(struct page *, struct writeback_control *);
+int bch2_read_folio(struct file *, struct folio *);
+
+int bch2_writepages(struct address_space *, struct writeback_control *);
+void bch2_readahead(struct readahead_control *);
+
+int bch2_write_begin(struct file *, struct address_space *, loff_t,
+		     unsigned, struct page **, void **);
+int bch2_write_end(struct file *, struct address_space *, loff_t,
+		   unsigned, unsigned, struct page *, void *);
+
+ssize_t bch2_read_iter(struct kiocb *, struct iov_iter *);
+ssize_t bch2_write_iter(struct kiocb *, struct iov_iter *);
+
+int bch2_fsync(struct file *, loff_t, loff_t, int);
+
+int bch2_truncate(struct bch_inode_info *, struct iattr *);
+long bch2_fallocate_dispatch(struct file *, int, loff_t, loff_t);
+
+loff_t bch2_llseek(struct file *, loff_t, int);
+
+vm_fault_t bch2_page_fault(struct vm_fault *);
+vm_fault_t bch2_page_mkwrite(struct vm_fault *);
+void bch2_invalidate_folio(struct folio *, size_t, size_t);
+bool bch2_release_folio(struct folio *, gfp_t);
+
+void bch2_fs_fsio_exit(struct bch_fs *);
+int bch2_fs_fsio_init(struct bch_fs *);
+#else
+static inline void bch2_fs_fsio_exit(struct bch_fs *c) {}
+static inline int bch2_fs_fsio_init(struct bch_fs *c) { return 0; }
+#endif
+
+#endif /* _BCACHEFS_FS_IO_H */