[PATCH 3/4] fat: support adding multiple clusters

[Matheus Alves de Almeida]

fat_add_cluster() currently adds only 1 cluster to the file's chain.
Implement support for adding more in one call and rename the function
to reflect the new behavior.

Signed-off-by: Matheus Alves de Almeida <matheus.aalmeida@xxxxxxxxxxxx>
---
 fs/fat/fat.h   | 2 +-
 fs/fat/file.c  | 2 +-
 fs/fat/inode.c | 8 ++++----
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/fs/fat/fat.h b/fs/fat/fat.h
index 75ac0239a..683fb68a7 100644
--- a/fs/fat/fat.h
+++ b/fs/fat/fat.h
@@ -440,7 +440,7 @@ static inline unsigned long fat_dir_hash(int logstart)
 {
 	return hash_32(logstart, FAT_HASH_BITS);
 }
-extern int fat_add_cluster(struct inode *inode);
+extern int fat_add_clusters(struct inode *inode, int nr_cluster);
 
 /* fat/misc.c */
 extern __printf(3, 4) __cold
diff --git a/fs/fat/file.c b/fs/fat/file.c
index 1c835ca5f..41d49e9de 100644
--- a/fs/fat/file.c
+++ b/fs/fat/file.c
@@ -292,7 +292,7 @@ static long fat_fallocate(struct file *file, int mode,
 
 		/* Start the allocation.We are not zeroing out the clusters */
 		while (nr_cluster-- > 0) {
-			err = fat_add_cluster(inode);
+			err = fat_add_clusters(inode, 1);
 			if (err)
 				goto error;
 		}
diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index f775a004c..44fc9b556 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -101,16 +101,16 @@ static struct fat_floppy_defaults {
 },
 };
 
-int fat_add_cluster(struct inode *inode)
+int fat_add_clusters(struct inode *inode, int nr_cluster)
 {
 	int err, cluster;
 
-	err = fat_alloc_clusters(inode, &cluster, 1);
+	err = fat_alloc_clusters(inode, &cluster, nr_cluster);
 	if (err)
 		return err;
 	/* FIXME: this cluster should be added after data of this
 	 * cluster is writed */
-	err = fat_chain_add(inode, cluster, 1);
+	err = fat_chain_add(inode, cluster, nr_cluster);
 	if (err)
 		fat_free_clusters(inode, cluster);
 	return err;
@@ -152,7 +152,7 @@ static inline int __fat_get_block(struct inode *inode, sector_t iblock,
 	 */
 	if (!offset && !(iblock < last_block)) {
 		/* TODO: multiple cluster allocation would be desirable. */
-		err = fat_add_cluster(inode);
+		err = fat_add_clusters(inode, 1);
 		if (err)
 			return err;
 	}
-- 
2.43.0