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| author |   Tao Ma <boyu.mt@taobao.com> | 2011-10-08 15:56:35 -0400 |
|---|---|---|
| committer |   Theodore Ts'o <tytso@mit.edu> | 2011-10-08 15:56:35 -0400 |
| commit | 7fd59c83b05dc1b8af2be4d991ee376f782cd8b0 (patch) | |
| tree | 0d320a397b687f822167749afbb11d89d9f21a66 /fs/ext4/ioctl.c | |
| parent | ext4: fix the comment describing ext4_ext_search_right() (diff) | |
| download | linux-dev-7fd59c83b05dc1b8af2be4d991ee376f782cd8b0.tar.xz linux-dev-7fd59c83b05dc1b8af2be4d991ee376f782cd8b0.zip | |
ext4: remove the obsolete/broken EXT4_IOC_WAIT_FOR_READONLY ioctl
There are no users of the EXT4_IOC_WAIT_FOR_READONLY ioctl, and it is
also broken. No one sets the set_ro_timer, no one wakes up us and our
state is set to TASK_INTERRUPTIBLE not RUNNING. So remove it.
Signed-off-by: Tao Ma <boyu.mt@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/ioctl.c')
| -rw-r--r-- | fs/ext4/ioctl.c | 28 |
1 files changed, 0 insertions, 28 deletions
diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index 2046d699b4a7..8f7ea6905421 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -174,29 +174,6 @@ setversion_out: mnt_drop_write(filp->f_path.mnt); return err; } -#ifdef CONFIG_JBD2_DEBUG - case EXT4_IOC_WAIT_FOR_READONLY: - /* - * This is racy - by the time we're woken up and running, - * the superblock could be released. And the module could - * have been unloaded. So sue me. - * - * Returns 1 if it slept, else zero. - */ - { - DECLARE_WAITQUEUE(wait, current); - int ret = 0; - - set_current_state(TASK_INTERRUPTIBLE); - add_wait_queue(&EXT4_SB(sb)->ro_wait_queue, &wait); - if (timer_pending(&EXT4_SB(sb)->turn_ro_timer)) { - schedule(); - ret = 1; - } - remove_wait_queue(&EXT4_SB(sb)->ro_wait_queue, &wait); - return ret; - } -#endif case EXT4_IOC_GROUP_EXTEND: { ext4_fsblk_t n_blocks_count; int err, err2=0; @@ -421,11 +398,6 @@ long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) case EXT4_IOC32_SETVERSION_OLD: cmd = EXT4_IOC_SETVERSION_OLD; break; -#ifdef CONFIG_JBD2_DEBUG - case EXT4_IOC32_WAIT_FOR_READONLY: - cmd = EXT4_IOC_WAIT_FOR_READONLY; - break; -#endif case EXT4_IOC32_GETRSVSZ: cmd = EXT4_IOC_GETRSVSZ; break; |