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-rw-r--r--fs/jfs/ioctl.c43
1 files changed, 42 insertions, 1 deletions
diff --git a/fs/jfs/ioctl.c b/fs/jfs/ioctl.c
index f19d1e04a37..bc555ff417e 100644
--- a/fs/jfs/ioctl.c
+++ b/fs/jfs/ioctl.c
@@ -11,13 +11,17 @@
#include <linux/mount.h>
#include <linux/time.h>
#include <linux/sched.h>
+#include <linux/blkdev.h>
#include <asm/current.h>
#include <asm/uaccess.h>
+#include "jfs_filsys.h"
+#include "jfs_debug.h"
#include "jfs_incore.h"
#include "jfs_dinode.h"
#include "jfs_inode.h"
-
+#include "jfs_dmap.h"
+#include "jfs_discard.h"
static struct {
long jfs_flag;
@@ -123,6 +127,40 @@ setflags_out:
mnt_drop_write_file(filp);
return err;
}
+
+ case FITRIM:
+ {
+ struct super_block *sb = inode->i_sb;
+ struct request_queue *q = bdev_get_queue(sb->s_bdev);
+ struct fstrim_range range;
+ s64 ret = 0;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ if (!blk_queue_discard(q)) {
+ jfs_warn("FITRIM not supported on device");
+ return -EOPNOTSUPP;
+ }
+
+ if (copy_from_user(&range, (struct fstrim_range __user *)arg,
+ sizeof(range)))
+ return -EFAULT;
+
+ range.minlen = max_t(unsigned int, range.minlen,
+ q->limits.discard_granularity);
+
+ ret = jfs_ioc_trim(inode, &range);
+ if (ret < 0)
+ return ret;
+
+ if (copy_to_user((struct fstrim_range __user *)arg, &range,
+ sizeof(range)))
+ return -EFAULT;
+
+ return 0;
+ }
+
default:
return -ENOTTY;
}
@@ -142,6 +180,9 @@ long jfs_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
case JFS_IOC_SETFLAGS32:
cmd = JFS_IOC_SETFLAGS;
break;
+ case FITRIM:
+ cmd = FITRIM;
+ break;
}
return jfs_ioctl(filp, cmd, arg);
}