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exfat: add balloc parameter to exfat_map_cluster() for iomap support

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In preparation for supporting the iomap infrastructure, we need to know
whether a new cluster was allocated or not in exfat_map_cluster().

Add an optional 'bool *balloc' output parameter. When a new cluster is
allocated, *balloc is set to true. Pass NULL from exfat_get_block() to
preserve the existing behavior.

Acked-by: Christoph Hellwig <hch@lst.de>
Acked-by: "Darrick J. Wong" <djwong@kernel.org>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
This commit is contained in:
Namjae Jeon 2026-04-23 14:38:51 +09:00
parent f07db38084
commit 3474416bb9
1 changed files with 5 additions and 2 deletions
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7
fs/exfat/inode.c
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@ -124,7 +124,8 @@ void exfat_sync_inode(struct inode *inode)
* *clu = (~0), if it's unable to allocate a new cluster
*/
static int exfat_map_cluster(struct inode *inode, unsigned int clu_offset,
unsigned int *clu, unsigned int *count, int create)
unsigned int *clu, unsigned int *count, int create,
bool *balloc)
{
int ret;
unsigned int last_clu;
@ -229,6 +230,8 @@ static int exfat_map_cluster(struct inode *inode, unsigned int clu_offset,
if (exfat_cluster_walk(sb, clu, num_to_be_allocated - 1, ei->flags))
return -EIO;
*count = 1;
if (balloc)
*balloc = true;
}
/* hint information */
@ -262,7 +265,7 @@ static int exfat_get_block(struct inode *inode, sector_t iblock,
/* Is this block already allocated? */
count = exfat_bytes_to_cluster_round_up(sbi, bh_result->b_size);
err = exfat_map_cluster(inode, iblock >> sbi->sect_per_clus_bits,
&cluster, &count, create);
&cluster, &count, create, NULL);
if (err) {
if (err != -ENOSPC)
exfat_fs_error_ratelimit(sb,