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fs: pass flags to copy_fs()

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Turn the umh boolean into a flags argument. Idle threads need their own
case in copy_fs() as well and that's nicer than a second boolean.

No functional changes.

Link: https://patch.msgid.link/20261013-work-fs-idle_fs-v1-1-2063d1bcb5aa@kernel.org
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
This commit is contained in:
Christian Brauner 2026-10-13 00:11:06 +02:00
parent 98b6cf102b
commit 9cd0df397a
No known key found for this signature in database
GPG Key ID: 91C61BC06578DCA2
1 changed files with 8 additions and 3 deletions
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11
kernel/fork.c
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@ -1619,7 +1619,12 @@ static int copy_exec_state(u64 clone_flags, struct task_struct *tsk)
return task_exec_state_copy(tsk);
}
static int copy_fs(u64 clone_flags, struct task_struct *tsk, bool umh)
enum copy_fs_flags_t {
COPY_FS_UMH = (1 << 0),
};
static int copy_fs(u64 clone_flags, struct task_struct *tsk,
enum copy_fs_flags_t flags)
{
struct fs_struct *fs;
@ -1629,7 +1634,7 @@ static int copy_fs(u64 clone_flags, struct task_struct *tsk, bool umh)
* filesystem state, or be started from a non-initial mount
* namespace.
*/
if (umh) {
if (flags & COPY_FS_UMH) {
if (clone_flags & (CLONE_NEWNS | CLONE_FS))
return -EINVAL;
if (current->nsproxy->mnt_ns != &init_mnt_ns)
@ -2299,7 +2304,7 @@ __latent_entropy struct task_struct *copy_process(
retval = copy_files(clone_flags, p, args->no_files);
if (retval)
goto bad_fork_cleanup_semundo;
retval = copy_fs(clone_flags, p, args->umh);
retval = copy_fs(clone_flags, p, args->umh ? COPY_FS_UMH : 0);
if (retval)
goto bad_fork_cleanup_files;
retval = copy_sighand(clone_flags, p);