Moved, renamed, and deleted files

The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.

1 files changed, 0 insertions, 267 deletions

diff --git a/ANDROID_3.4.5/fs/btrfs/locking.c b/ANDROID_3.4.5/fs/btrfs/locking.c
deleted file mode 100644
index 272f9112..00000000
--- a/ANDROID_3.4.5/fs/btrfs/locking.c
+++ /dev/null
@@ -1,267 +0,0 @@
-/*
- * Copyright (C) 2008 Oracle.  All rights reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public
- * License v2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public
- * License along with this program; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 021110-1307, USA.
- */
-#include <linux/sched.h>
-#include <linux/pagemap.h>
-#include <linux/spinlock.h>
-#include <linux/page-flags.h>
-#include <asm/bug.h>
-#include "ctree.h"
-#include "extent_io.h"
-#include "locking.h"
-
-void btrfs_assert_tree_read_locked(struct extent_buffer *eb);
-
-/*
- * if we currently have a spinning reader or writer lock
- * (indicated by the rw flag) this will bump the count
- * of blocking holders and drop the spinlock.
- */
-void btrfs_set_lock_blocking_rw(struct extent_buffer *eb, int rw)
-{
-	if (eb->lock_nested) {
-		read_lock(&eb->lock);
-		if (eb->lock_nested && current->pid == eb->lock_owner) {
-			read_unlock(&eb->lock);
-			return;
-		}
-		read_unlock(&eb->lock);
-	}
-	if (rw == BTRFS_WRITE_LOCK) {
-		if (atomic_read(&eb->blocking_writers) == 0) {
-			WARN_ON(atomic_read(&eb->spinning_writers) != 1);
-			atomic_dec(&eb->spinning_writers);
-			btrfs_assert_tree_locked(eb);
-			atomic_inc(&eb->blocking_writers);
-			write_unlock(&eb->lock);
-		}
-	} else if (rw == BTRFS_READ_LOCK) {
-		btrfs_assert_tree_read_locked(eb);
-		atomic_inc(&eb->blocking_readers);
-		WARN_ON(atomic_read(&eb->spinning_readers) == 0);
-		atomic_dec(&eb->spinning_readers);
-		read_unlock(&eb->lock);
-	}
-	return;
-}
-
-/*
- * if we currently have a blocking lock, take the spinlock
- * and drop our blocking count
- */
-void btrfs_clear_lock_blocking_rw(struct extent_buffer *eb, int rw)
-{
-	if (eb->lock_nested) {
-		read_lock(&eb->lock);
-		if (&eb->lock_nested && current->pid == eb->lock_owner) {
-			read_unlock(&eb->lock);
-			return;
-		}
-		read_unlock(&eb->lock);
-	}
-	if (rw == BTRFS_WRITE_LOCK_BLOCKING) {
-		BUG_ON(atomic_read(&eb->blocking_writers) != 1);
-		write_lock(&eb->lock);
-		WARN_ON(atomic_read(&eb->spinning_writers));
-		atomic_inc(&eb->spinning_writers);
-		if (atomic_dec_and_test(&eb->blocking_writers))
-			wake_up(&eb->write_lock_wq);
-	} else if (rw == BTRFS_READ_LOCK_BLOCKING) {
-		BUG_ON(atomic_read(&eb->blocking_readers) == 0);
-		read_lock(&eb->lock);
-		atomic_inc(&eb->spinning_readers);
-		if (atomic_dec_and_test(&eb->blocking_readers))
-			wake_up(&eb->read_lock_wq);
-	}
-	return;
-}
-
-/*
- * take a spinning read lock.  This will wait for any blocking
- * writers
- */
-void btrfs_tree_read_lock(struct extent_buffer *eb)
-{
-again:
-	read_lock(&eb->lock);
-	if (atomic_read(&eb->blocking_writers) &&
-	    current->pid == eb->lock_owner) {
-		/*
-		 * This extent is already write-locked by our thread. We allow
-		 * an additional read lock to be added because it's for the same
-		 * thread. btrfs_find_all_roots() depends on this as it may be
-		 * called on a partly (write-)locked tree.
-		 */
-		BUG_ON(eb->lock_nested);
-		eb->lock_nested = 1;
-		read_unlock(&eb->lock);
-		return;
-	}
-	read_unlock(&eb->lock);
-	wait_event(eb->write_lock_wq, atomic_read(&eb->blocking_writers) == 0);
-	read_lock(&eb->lock);
-	if (atomic_read(&eb->blocking_writers)) {
-		read_unlock(&eb->lock);
-		goto again;
-	}
-	atomic_inc(&eb->read_locks);
-	atomic_inc(&eb->spinning_readers);
-}
-
-/*
- * returns 1 if we get the read lock and 0 if we don't
- * this won't wait for blocking writers
- */
-int btrfs_try_tree_read_lock(struct extent_buffer *eb)
-{
-	if (atomic_read(&eb->blocking_writers))
-		return 0;
-
-	read_lock(&eb->lock);
-	if (atomic_read(&eb->blocking_writers)) {
-		read_unlock(&eb->lock);
-		return 0;
-	}
-	atomic_inc(&eb->read_locks);
-	atomic_inc(&eb->spinning_readers);
-	return 1;
-}
-
-/*
- * returns 1 if we get the read lock and 0 if we don't
- * this won't wait for blocking writers or readers
- */
-int btrfs_try_tree_write_lock(struct extent_buffer *eb)
-{
-	if (atomic_read(&eb->blocking_writers) ||
-	    atomic_read(&eb->blocking_readers))
-		return 0;
-	write_lock(&eb->lock);
-	if (atomic_read(&eb->blocking_writers) ||
-	    atomic_read(&eb->blocking_readers)) {
-		write_unlock(&eb->lock);
-		return 0;
-	}
-	atomic_inc(&eb->write_locks);
-	atomic_inc(&eb->spinning_writers);
-	eb->lock_owner = current->pid;
-	return 1;
-}
-
-/*
- * drop a spinning read lock
- */
-void btrfs_tree_read_unlock(struct extent_buffer *eb)
-{
-	if (eb->lock_nested) {
-		read_lock(&eb->lock);
-		if (eb->lock_nested && current->pid == eb->lock_owner) {
-			eb->lock_nested = 0;
-			read_unlock(&eb->lock);
-			return;
-		}
-		read_unlock(&eb->lock);
-	}
-	btrfs_assert_tree_read_locked(eb);
-	WARN_ON(atomic_read(&eb->spinning_readers) == 0);
-	atomic_dec(&eb->spinning_readers);
-	atomic_dec(&eb->read_locks);
-	read_unlock(&eb->lock);
-}
-
-/*
- * drop a blocking read lock
- */
-void btrfs_tree_read_unlock_blocking(struct extent_buffer *eb)
-{
-	if (eb->lock_nested) {
-		read_lock(&eb->lock);
-		if (eb->lock_nested && current->pid == eb->lock_owner) {
-			eb->lock_nested = 0;
-			read_unlock(&eb->lock);
-			return;
-		}
-		read_unlock(&eb->lock);
-	}
-	btrfs_assert_tree_read_locked(eb);
-	WARN_ON(atomic_read(&eb->blocking_readers) == 0);
-	if (atomic_dec_and_test(&eb->blocking_readers))
-		wake_up(&eb->read_lock_wq);
-	atomic_dec(&eb->read_locks);
-}
-
-/*
- * take a spinning write lock.  This will wait for both
- * blocking readers or writers
- */
-void btrfs_tree_lock(struct extent_buffer *eb)
-{
-again:
-	wait_event(eb->read_lock_wq, atomic_read(&eb->blocking_readers) == 0);
-	wait_event(eb->write_lock_wq, atomic_read(&eb->blocking_writers) == 0);
-	write_lock(&eb->lock);
-	if (atomic_read(&eb->blocking_readers)) {
-		write_unlock(&eb->lock);
-		wait_event(eb->read_lock_wq,
-			   atomic_read(&eb->blocking_readers) == 0);
-		goto again;
-	}
-	if (atomic_read(&eb->blocking_writers)) {
-		write_unlock(&eb->lock);
-		wait_event(eb->write_lock_wq,
-			   atomic_read(&eb->blocking_writers) == 0);
-		goto again;
-	}
-	WARN_ON(atomic_read(&eb->spinning_writers));
-	atomic_inc(&eb->spinning_writers);
-	atomic_inc(&eb->write_locks);
-	eb->lock_owner = current->pid;
-}
-
-/*
- * drop a spinning or a blocking write lock.
- */
-void btrfs_tree_unlock(struct extent_buffer *eb)
-{
-	int blockers = atomic_read(&eb->blocking_writers);
-
-	BUG_ON(blockers > 1);
-
-	btrfs_assert_tree_locked(eb);
-	atomic_dec(&eb->write_locks);
-
-	if (blockers) {
-		WARN_ON(atomic_read(&eb->spinning_writers));
-		atomic_dec(&eb->blocking_writers);
-		smp_wmb();
-		wake_up(&eb->write_lock_wq);
-	} else {
-		WARN_ON(atomic_read(&eb->spinning_writers) != 1);
-		atomic_dec(&eb->spinning_writers);
-		write_unlock(&eb->lock);
-	}
-}
-
-void btrfs_assert_tree_locked(struct extent_buffer *eb)
-{
-	BUG_ON(!atomic_read(&eb->write_locks));
-}
-
-void btrfs_assert_tree_read_locked(struct extent_buffer *eb)
-{
-	BUG_ON(!atomic_read(&eb->read_locks));
-}