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authorMikulas Patocka <mikulas@twibright.com>2015-06-28 15:16:57 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2015-07-09 13:35:30 -0700
commita27b5b97d6fe91f55058ad8ac28a8768700201ab (patch)
tree84272380472c484455a662d17b0b544421a26fe2 /fs/hpfs/super.c
parent9abea2d64ce93b6909de7f83a7f681f572369708 (diff)
downloadlinux-a27b5b97d6fe91f55058ad8ac28a8768700201ab.tar.bz2
hpfs: add fstrim support
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>
Diffstat (limited to 'fs/hpfs/super.c')
-rw-r--r--fs/hpfs/super.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/fs/hpfs/super.c b/fs/hpfs/super.c
index 7cd00d3a7c9b..037e3e597ff4 100644
--- a/fs/hpfs/super.c
+++ b/fs/hpfs/super.c
@@ -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)