ext4: Make ext4_meta_trans_blocks() non-static for later use

Let's make ext4_meta_trans_blocks() non-static for use in later
functions during ->end_io conversion for atomic writes.
We will need this function to estimate journal credits for a special
case. Instead of adding another wrapper around it, let's make this
non-static.

Reviewed-by: Ojaswin Mujoo <[email protected]>
Acked-by: Darrick J. Wong <[email protected]>
Signed-off-by: Ritesh Harjani (IBM) <[email protected]>
Link: https://patch.msgid.link/23ce80d4286f792831ce99d13558182ee228fedb.1747337952.git.ritesh.list@gmail.com
Signed-off-by: Theodore Ts'o <[email protected]>

Author: riteshharjani

fs/ext4/ext4.h

@@ -3045,6 +3045,8 @@ extern void ext4_set_aops(struct inode *inode);
 extern int ext4_writepage_trans_blocks(struct inode *);
 extern int ext4_normal_submit_inode_data_buffers(struct jbd2_inode *jinode);
 extern int ext4_chunk_trans_blocks(struct inode *, int nrblocks);
+extern int ext4_meta_trans_blocks(struct inode *inode, int lblocks,
+				  int pextents);
 extern int ext4_zero_partial_blocks(handle_t *handle, struct inode *inode,
 			     loff_t lstart, loff_t lend);
 extern vm_fault_t ext4_page_mkwrite(struct vm_fault *vmf);

fs/ext4/inode.c

@@ -140,9 +140,6 @@ static inline int ext4_begin_ordered_truncate(struct inode *inode,
 						   new_size);
 }
 
-static int ext4_meta_trans_blocks(struct inode *inode, int lblocks,
-				  int pextents);
-
 /*
  * Test whether an inode is a fast symlink.
  * A fast symlink has its symlink data stored in ext4_inode_info->i_data.
@@ -5856,8 +5853,7 @@ static int ext4_index_trans_blocks(struct inode *inode, int lblocks,
  *
  * Also account for superblock, inode, quota and xattr blocks
  */
-static int ext4_meta_trans_blocks(struct inode *inode, int lblocks,
-				  int pextents)
+int ext4_meta_trans_blocks(struct inode *inode, int lblocks, int pextents)
 {
 	ext4_group_t groups, ngroups = ext4_get_groups_count(inode->i_sb);
 	int gdpblocks;