[PATCH RFC 2/4] erofs: expose erofs_iomap_{begin, end}

[Hongzhen Luo]

Expose erofs_iomap_{begin, end} to prepare for the implementation
of the page cache share feature.

Signed-off-by: Hongzhen Luo <hongzhen at linux.alibaba.com>
---
 fs/erofs/data.c     | 4 ++--
 fs/erofs/internal.h | 5 +++++
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/fs/erofs/data.c b/fs/erofs/data.c
index 8be60797ea2f..0d0997c53ff9 100644
--- a/fs/erofs/data.c
+++ b/fs/erofs/data.c
@@ -249,7 +249,7 @@ int erofs_map_dev(struct super_block *sb, struct erofs_map_dev *map)
 	return 0;
 }
 
-static int erofs_iomap_begin(struct inode *inode, loff_t offset, loff_t length,
+int erofs_iomap_begin(struct inode *inode, loff_t offset, loff_t length,
 		unsigned int flags, struct iomap *iomap, struct iomap *srcmap)
 {
 	int ret;
@@ -308,7 +308,7 @@ static int erofs_iomap_begin(struct inode *inode, loff_t offset, loff_t length,
 	return 0;
 }
 
-static int erofs_iomap_end(struct inode *inode, loff_t pos, loff_t length,
+int erofs_iomap_end(struct inode *inode, loff_t pos, loff_t length,
 		ssize_t written, unsigned int flags, struct iomap *iomap)
 {
 	void *ptr = iomap->private;
diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h
index 3f1984664dac..2c695ec6ee71 100644
--- a/fs/erofs/internal.h
+++ b/fs/erofs/internal.h
@@ -389,6 +389,11 @@ extern const struct iomap_ops z_erofs_iomap_report_ops;
 
 extern struct file_system_type erofs_anon_fs_type;
 
+extern int erofs_iomap_begin(struct inode *inode, loff_t offset, loff_t length,
+		unsigned int flags, struct iomap *iomap, struct iomap *srcmap);
+extern int erofs_iomap_end(struct inode *inode, loff_t pos, loff_t length,
+		ssize_t written, unsigned int flags, struct iomap *iomap);
+
 /* flags for erofs_fscache_register_cookie() */
 #define EROFS_REG_COOKIE_SHARE		0x0001
 #define EROFS_REG_COOKIE_NEED_NOEXIST	0x0002
-- 
2.43.5