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| author | Yuezhang Mo <Yuezhang.Mo@sony.com> | 2023-07-20 09:40:08 +0300 |
|---|---|---|
| committer | Namjae Jeon <linkinjeon@kernel.org> | 2023-10-31 04:01:45 +0300 |
| commit | ee785c15b5906a69d4007b4754e8ae40fb41e0b4 (patch) | |
| tree | d5960f2815f9fa05ae3310aadad0670aebee52a4 /fs/exfat/dir.c | |
| parent | dab48b8f2fe7264d51ec9eed0adea0fe3c78830a (diff) | |
| download | linux-ee785c15b5906a69d4007b4754e8ae40fb41e0b4.tar.xz | |
exfat: support create zero-size directory
This commit adds mount option 'zero_size_dir'. If this option
enabled, don't allocate a cluster to directory when creating
it, and set the directory size to 0.
On Windows, a cluster is allocated for a directory when it is
created, so the mount option is disabled by default.
Signed-off-by: Yuezhang Mo <Yuezhang.Mo@sony.com>
Reviewed-by: Andy Wu <Andy.Wu@sony.com>
Reviewed-by: Aoyama Wataru <wataru.aoyama@sony.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Diffstat (limited to 'fs/exfat/dir.c')
| -rw-r--r-- | fs/exfat/dir.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/fs/exfat/dir.c b/fs/exfat/dir.c index fdd46aa466e1..9f9295847a4e 100644 --- a/fs/exfat/dir.c +++ b/fs/exfat/dir.c @@ -418,11 +418,13 @@ static void exfat_set_entry_type(struct exfat_dentry *ep, unsigned int type) } static void exfat_init_stream_entry(struct exfat_dentry *ep, - unsigned char flags, unsigned int start_clu, - unsigned long long size) + unsigned int start_clu, unsigned long long size) { exfat_set_entry_type(ep, TYPE_STREAM); - ep->dentry.stream.flags = flags; + if (size == 0) + ep->dentry.stream.flags = ALLOC_FAT_CHAIN; + else + ep->dentry.stream.flags = ALLOC_NO_FAT_CHAIN; ep->dentry.stream.start_clu = cpu_to_le32(start_clu); ep->dentry.stream.valid_size = cpu_to_le64(size); ep->dentry.stream.size = cpu_to_le64(size); @@ -488,9 +490,7 @@ int exfat_init_dir_entry(struct inode *inode, struct exfat_chain *p_dir, if (!ep) return -EIO; - exfat_init_stream_entry(ep, - (type == TYPE_FILE) ? ALLOC_FAT_CHAIN : ALLOC_NO_FAT_CHAIN, - start_clu, size); + exfat_init_stream_entry(ep, start_clu, size); exfat_update_bh(bh, IS_DIRSYNC(inode)); brelse(bh); |