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hpfs: add fstrim support

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This patch adds support for fstrim to the HPFS filesystem.

Signed-off-by: Mikulas Patocka <mikulas@twibright.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Mikulas Patocka
2015-06-28 15:16:57 +02:00
committed by Linus Torvalds
parent 9abea2d64c
commit a27b5b97d6
5 changed files with 128 additions and 0 deletions
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27
fs/hpfs/super.c
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@@ -196,6 +196,33 @@ static int hpfs_statfs(struct dentry *dentry, struct kstatfs *buf)
return 0;
}
long hpfs_ioctl(struct file *file, unsigned cmd, unsigned long arg)
{
switch (cmd) {
case FITRIM: {
struct fstrim_range range;
secno n_trimmed;
int r;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (copy_from_user(&range, (struct fstrim_range __user *)arg, sizeof(range)))
return -EFAULT;
r = hpfs_trim_fs(file_inode(file)->i_sb, range.start >> 9, (range.start + range.len) >> 9, (range.minlen + 511) >> 9, &n_trimmed);
if (r)
return r;
range.len = (u64)n_trimmed << 9;
if (copy_to_user((struct fstrim_range __user *)arg, &range, sizeof(range)))
return -EFAULT;
return 0;
}
default: {
return -ENOIOCTLCMD;
}
}
}
static struct kmem_cache * hpfs_inode_cachep;
static struct inode *hpfs_alloc_inode(struct super_block *sb)