Remove bcachefs core code

bcachefs was marked 'externally maintained' in 6.17 but the code
remained to make the transition smoother.

It's now a DKMS module, making the in-kernel code stale, so remove
it to avoid any version confusion.

Link: https://lore.kernel.org/linux-bcachefs/yokpt2d2g2lluyomtqrdvmkl3amv3kgnipmenobkpgx537kay7@xgcgjviv3n7x/T/
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 0 insertions, 144 deletions

diff --git a/fs/bcachefs/enumerated_ref.c b/fs/bcachefs/enumerated_ref.c
deleted file mode 100644
index 56ab430f209f..000000000000
--- a/fs/bcachefs/enumerated_ref.c
+++ /dev/null
@@ -1,144 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-
-#include "bcachefs.h"
-#include "enumerated_ref.h"
-#include "util.h"
-
-#include <linux/completion.h>
-
-#ifdef ENUMERATED_REF_DEBUG
-void enumerated_ref_get(struct enumerated_ref *ref, unsigned idx)
-{
-	BUG_ON(idx >= ref->nr);
-	atomic_long_inc(&ref->refs[idx]);
-}
-
-bool __enumerated_ref_tryget(struct enumerated_ref *ref, unsigned idx)
-{
-	BUG_ON(idx >= ref->nr);
-	return atomic_long_inc_not_zero(&ref->refs[idx]);
-}
-
-bool enumerated_ref_tryget(struct enumerated_ref *ref, unsigned idx)
-{
-	BUG_ON(idx >= ref->nr);
-	return !ref->dying &&
-		atomic_long_inc_not_zero(&ref->refs[idx]);
-}
-
-void enumerated_ref_put(struct enumerated_ref *ref, unsigned idx)
-{
-	BUG_ON(idx >= ref->nr);
-	long v = atomic_long_dec_return(&ref->refs[idx]);
-
-	BUG_ON(v < 0);
-	if (v)
-		return;
-
-	for (unsigned i = 0; i < ref->nr; i++)
-		if (atomic_long_read(&ref->refs[i]))
-			return;
-
-	if (ref->stop_fn)
-		ref->stop_fn(ref);
-	complete(&ref->stop_complete);
-}
-#endif
-
-#ifndef ENUMERATED_REF_DEBUG
-static void enumerated_ref_kill_cb(struct percpu_ref *percpu_ref)
-{
-	struct enumerated_ref *ref =
-		container_of(percpu_ref, struct enumerated_ref, ref);
-
-	if (ref->stop_fn)
-		ref->stop_fn(ref);
-	complete(&ref->stop_complete);
-}
-#endif
-
-void enumerated_ref_stop_async(struct enumerated_ref *ref)
-{
-	reinit_completion(&ref->stop_complete);
-
-#ifndef ENUMERATED_REF_DEBUG
-	percpu_ref_kill(&ref->ref);
-#else
-	ref->dying = true;
-	for (unsigned i = 0; i < ref->nr; i++)
-		enumerated_ref_put(ref, i);
-#endif
-}
-
-void enumerated_ref_stop(struct enumerated_ref *ref,
-			 const char * const names[])
-{
-	enumerated_ref_stop_async(ref);
-	while (!wait_for_completion_timeout(&ref->stop_complete, HZ * 10)) {
-		struct printbuf buf = PRINTBUF;
-
-		prt_str(&buf, "Waited for 10 seconds to shutdown enumerated ref\n");
-		prt_str(&buf, "Outstanding refs:\n");
-		enumerated_ref_to_text(&buf, ref, names);
-		printk(KERN_ERR "%s", buf.buf);
-		printbuf_exit(&buf);
-	}
-}
-
-void enumerated_ref_start(struct enumerated_ref *ref)
-{
-#ifndef ENUMERATED_REF_DEBUG
-	percpu_ref_reinit(&ref->ref);
-#else
-	ref->dying = false;
-	for (unsigned i = 0; i < ref->nr; i++) {
-		BUG_ON(atomic_long_read(&ref->refs[i]));
-		atomic_long_inc(&ref->refs[i]);
-	}
-#endif
-}
-
-void enumerated_ref_exit(struct enumerated_ref *ref)
-{
-#ifndef ENUMERATED_REF_DEBUG
-	percpu_ref_exit(&ref->ref);
-#else
-	kfree(ref->refs);
-	ref->refs = NULL;
-	ref->nr = 0;
-#endif
-}
-
-int enumerated_ref_init(struct enumerated_ref *ref, unsigned nr,
-			void (*stop_fn)(struct enumerated_ref *))
-{
-	init_completion(&ref->stop_complete);
-	ref->stop_fn = stop_fn;
-
-#ifndef ENUMERATED_REF_DEBUG
-	return percpu_ref_init(&ref->ref, enumerated_ref_kill_cb,
-			    PERCPU_REF_INIT_DEAD, GFP_KERNEL);
-#else
-	ref->refs = kzalloc(sizeof(ref->refs[0]) * nr, GFP_KERNEL);
-	if (!ref->refs)
-		return -ENOMEM;
-
-	ref->nr = nr;
-	return 0;
-#endif
-}
-
-void enumerated_ref_to_text(struct printbuf *out,
-			    struct enumerated_ref *ref,
-			    const char * const names[])
-{
-#ifdef ENUMERATED_REF_DEBUG
-	bch2_printbuf_tabstop_push(out, 32);
-
-	for (unsigned i = 0; i < ref->nr; i++)
-		prt_printf(out, "%s\t%li\n", names[i],
-			   atomic_long_read(&ref->refs[i]));
-#else
-	prt_str(out, "(not in debug mode)\n");
-#endif
-}