diff options
Diffstat (limited to 'fs/jfs/ioctl.c')
| -rw-r--r-- | fs/jfs/ioctl.c | 43 |
1 files changed, 42 insertions, 1 deletions
diff --git a/fs/jfs/ioctl.c b/fs/jfs/ioctl.c index f19d1e04a374..bc555ff417e9 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); } |