Linux-libre 4.5-gnu

1 files changed, 0 insertions, 353 deletions

diff --git a/fs/aufs/sbinfo.c b/fs/aufs/sbinfo.c
deleted file mode 100644
index e3c58f643..000000000
--- a/fs/aufs/sbinfo.c
+++ /dev/null
@@ -1,353 +0,0 @@
-/*
- * Copyright (C) 2005-2016 Junjiro R. Okajima
- */
-
-/*
- * superblock private data
- */
-
-#include "aufs.h"
-
-/*
- * they are necessary regardless sysfs is disabled.
- */
-void au_si_free(struct kobject *kobj)
-{
-	int i;
-	struct au_sbinfo *sbinfo;
-	char *locked __maybe_unused; /* debug only */
-
-	sbinfo = container_of(kobj, struct au_sbinfo, si_kobj);
-	for (i = 0; i < AuPlink_NHASH; i++)
-		AuDebugOn(!hlist_empty(&sbinfo->si_plink[i].head));
-	AuDebugOn(atomic_read(&sbinfo->si_nowait.nw_len));
-
-	AuDebugOn(!hlist_empty(&sbinfo->si_symlink.head));
-
-	au_rw_write_lock(&sbinfo->si_rwsem);
-	au_br_free(sbinfo);
-	au_rw_write_unlock(&sbinfo->si_rwsem);
-
-	AuDebugOn(radix_tree_gang_lookup
-		  (&sbinfo->au_si_pid.tree, (void **)&locked,
-		   /*first_index*/PID_MAX_DEFAULT - 1,
-		   /*max_items*/sizeof(locked)/sizeof(*locked)));
-
-	kfree(sbinfo->si_branch);
-	kfree(sbinfo->au_si_pid.bitmap);
-	mutex_destroy(&sbinfo->si_xib_mtx);
-	AuRwDestroy(&sbinfo->si_rwsem);
-
-	kfree(sbinfo);
-}
-
-int au_si_alloc(struct super_block *sb)
-{
-	int err, i;
-	struct au_sbinfo *sbinfo;
-	static struct lock_class_key aufs_si;
-
-	err = -ENOMEM;
-	sbinfo = kzalloc(sizeof(*sbinfo), GFP_NOFS);
-	if (unlikely(!sbinfo))
-		goto out;
-
-	BUILD_BUG_ON(sizeof(unsigned long) !=
-		     sizeof(*sbinfo->au_si_pid.bitmap));
-	sbinfo->au_si_pid.bitmap = kcalloc(BITS_TO_LONGS(PID_MAX_DEFAULT),
-					sizeof(*sbinfo->au_si_pid.bitmap),
-					GFP_NOFS);
-	if (unlikely(!sbinfo->au_si_pid.bitmap))
-		goto out_sbinfo;
-
-	/* will be reallocated separately */
-	sbinfo->si_branch = kzalloc(sizeof(*sbinfo->si_branch), GFP_NOFS);
-	if (unlikely(!sbinfo->si_branch))
-		goto out_pidmap;
-
-	err = sysaufs_si_init(sbinfo);
-	if (unlikely(err))
-		goto out_br;
-
-	au_nwt_init(&sbinfo->si_nowait);
-	au_rw_init_wlock(&sbinfo->si_rwsem);
-	au_rw_class(&sbinfo->si_rwsem, &aufs_si);
-	spin_lock_init(&sbinfo->au_si_pid.tree_lock);
-	INIT_RADIX_TREE(&sbinfo->au_si_pid.tree, GFP_ATOMIC | __GFP_NOFAIL);
-
-	atomic_long_set(&sbinfo->si_ninodes, 0);
-	atomic_long_set(&sbinfo->si_nfiles, 0);
-
-	sbinfo->si_bend = -1;
-	sbinfo->si_last_br_id = AUFS_BRANCH_MAX / 2;
-
-	sbinfo->si_wbr_copyup = AuWbrCopyup_Def;
-	sbinfo->si_wbr_create = AuWbrCreate_Def;
-	sbinfo->si_wbr_copyup_ops = au_wbr_copyup_ops + sbinfo->si_wbr_copyup;
-	sbinfo->si_wbr_create_ops = au_wbr_create_ops + sbinfo->si_wbr_create;
-
-	au_fhsm_init(sbinfo);
-
-	sbinfo->si_mntflags = au_opts_plink(AuOpt_Def);
-
-	au_sphl_init(&sbinfo->si_symlink);
-
-	sbinfo->si_xino_jiffy = jiffies;
-	sbinfo->si_xino_expire
-		= msecs_to_jiffies(AUFS_XINO_DEF_SEC * MSEC_PER_SEC);
-	mutex_init(&sbinfo->si_xib_mtx);
-	sbinfo->si_xino_brid = -1;
-	/* leave si_xib_last_pindex and si_xib_next_bit */
-
-	au_sphl_init(&sbinfo->si_aopen);
-
-	sbinfo->si_rdcache = msecs_to_jiffies(AUFS_RDCACHE_DEF * MSEC_PER_SEC);
-	sbinfo->si_rdblk = AUFS_RDBLK_DEF;
-	sbinfo->si_rdhash = AUFS_RDHASH_DEF;
-	sbinfo->si_dirwh = AUFS_DIRWH_DEF;
-
-	for (i = 0; i < AuPlink_NHASH; i++)
-		au_sphl_init(sbinfo->si_plink + i);
-	init_waitqueue_head(&sbinfo->si_plink_wq);
-	spin_lock_init(&sbinfo->si_plink_maint_lock);
-
-	au_sphl_init(&sbinfo->si_files);
-
-	/* with getattr by default */
-	sbinfo->si_iop_array = aufs_iop;
-
-	/* leave other members for sysaufs and si_mnt. */
-	sbinfo->si_sb = sb;
-	sb->s_fs_info = sbinfo;
-	si_pid_set(sb);
-	return 0; /* success */
-
-out_br:
-	kfree(sbinfo->si_branch);
-out_pidmap:
-	kfree(sbinfo->au_si_pid.bitmap);
-out_sbinfo:
-	kfree(sbinfo);
-out:
-	return err;
-}
-
-int au_sbr_realloc(struct au_sbinfo *sbinfo, int nbr)
-{
-	int err, sz;
-	struct au_branch **brp;
-
-	AuRwMustWriteLock(&sbinfo->si_rwsem);
-
-	err = -ENOMEM;
-	sz = sizeof(*brp) * (sbinfo->si_bend + 1);
-	if (unlikely(!sz))
-		sz = sizeof(*brp);
-	brp = au_kzrealloc(sbinfo->si_branch, sz, sizeof(*brp) * nbr, GFP_NOFS);
-	if (brp) {
-		sbinfo->si_branch = brp;
-		err = 0;
-	}
-
-	return err;
-}
-
-/* ---------------------------------------------------------------------- */
-
-unsigned int au_sigen_inc(struct super_block *sb)
-{
-	unsigned int gen;
-	struct inode *inode;
-
-	SiMustWriteLock(sb);
-
-	gen = ++au_sbi(sb)->si_generation;
-	au_update_digen(sb->s_root);
-	inode = d_inode(sb->s_root);
-	au_update_iigen(inode, /*half*/0);
-	inode->i_version++;
-	return gen;
-}
-
-aufs_bindex_t au_new_br_id(struct super_block *sb)
-{
-	aufs_bindex_t br_id;
-	int i;
-	struct au_sbinfo *sbinfo;
-
-	SiMustWriteLock(sb);
-
-	sbinfo = au_sbi(sb);
-	for (i = 0; i <= AUFS_BRANCH_MAX; i++) {
-		br_id = ++sbinfo->si_last_br_id;
-		AuDebugOn(br_id < 0);
-		if (br_id && au_br_index(sb, br_id) < 0)
-			return br_id;
-	}
-
-	return -1;
-}
-
-/* ---------------------------------------------------------------------- */
-
-/* it is ok that new 'nwt' tasks are appended while we are sleeping */
-int si_read_lock(struct super_block *sb, int flags)
-{
-	int err;
-
-	err = 0;
-	if (au_ftest_lock(flags, FLUSH))
-		au_nwt_flush(&au_sbi(sb)->si_nowait);
-
-	si_noflush_read_lock(sb);
-	err = au_plink_maint(sb, flags);
-	if (unlikely(err))
-		si_read_unlock(sb);
-
-	return err;
-}
-
-int si_write_lock(struct super_block *sb, int flags)
-{
-	int err;
-
-	if (au_ftest_lock(flags, FLUSH))
-		au_nwt_flush(&au_sbi(sb)->si_nowait);
-
-	si_noflush_write_lock(sb);
-	err = au_plink_maint(sb, flags);
-	if (unlikely(err))
-		si_write_unlock(sb);
-
-	return err;
-}
-
-/* dentry and super_block lock. call at entry point */
-int aufs_read_lock(struct dentry *dentry, int flags)
-{
-	int err;
-	struct super_block *sb;
-
-	sb = dentry->d_sb;
-	err = si_read_lock(sb, flags);
-	if (unlikely(err))
-		goto out;
-
-	if (au_ftest_lock(flags, DW))
-		di_write_lock_child(dentry);
-	else
-		di_read_lock_child(dentry, flags);
-
-	if (au_ftest_lock(flags, GEN)) {
-		err = au_digen_test(dentry, au_sigen(sb));
-		if (!au_opt_test(au_mntflags(sb), UDBA_NONE))
-			AuDebugOn(!err && au_dbrange_test(dentry));
-		else if (!err)
-			err = au_dbrange_test(dentry);
-		if (unlikely(err))
-			aufs_read_unlock(dentry, flags);
-	}
-
-out:
-	return err;
-}
-
-void aufs_read_unlock(struct dentry *dentry, int flags)
-{
-	if (au_ftest_lock(flags, DW))
-		di_write_unlock(dentry);
-	else
-		di_read_unlock(dentry, flags);
-	si_read_unlock(dentry->d_sb);
-}
-
-void aufs_write_lock(struct dentry *dentry)
-{
-	si_write_lock(dentry->d_sb, AuLock_FLUSH | AuLock_NOPLMW);
-	di_write_lock_child(dentry);
-}
-
-void aufs_write_unlock(struct dentry *dentry)
-{
-	di_write_unlock(dentry);
-	si_write_unlock(dentry->d_sb);
-}
-
-int aufs_read_and_write_lock2(struct dentry *d1, struct dentry *d2, int flags)
-{
-	int err;
-	unsigned int sigen;
-	struct super_block *sb;
-
-	sb = d1->d_sb;
-	err = si_read_lock(sb, flags);
-	if (unlikely(err))
-		goto out;
-
-	di_write_lock2_child(d1, d2, au_ftest_lock(flags, DIRS));
-
-	if (au_ftest_lock(flags, GEN)) {
-		sigen = au_sigen(sb);
-		err = au_digen_test(d1, sigen);
-		AuDebugOn(!err && au_dbrange_test(d1));
-		if (!err) {
-			err = au_digen_test(d2, sigen);
-			AuDebugOn(!err && au_dbrange_test(d2));
-		}
-		if (unlikely(err))
-			aufs_read_and_write_unlock2(d1, d2);
-	}
-
-out:
-	return err;
-}
-
-void aufs_read_and_write_unlock2(struct dentry *d1, struct dentry *d2)
-{
-	di_write_unlock2(d1, d2);
-	si_read_unlock(d1->d_sb);
-}
-
-/* ---------------------------------------------------------------------- */
-
-int si_pid_test_slow(struct super_block *sb)
-{
-	void *p;
-
-	rcu_read_lock();
-	p = radix_tree_lookup(&au_sbi(sb)->au_si_pid.tree, current->pid);
-	rcu_read_unlock();
-
-	return (long)!!p;
-}
-
-void si_pid_set_slow(struct super_block *sb)
-{
-	int err;
-	struct au_sbinfo *sbinfo;
-
-	AuDebugOn(si_pid_test_slow(sb));
-
-	sbinfo = au_sbi(sb);
-	err = radix_tree_preload(GFP_NOFS | __GFP_NOFAIL);
-	AuDebugOn(err);
-	spin_lock(&sbinfo->au_si_pid.tree_lock);
-	err = radix_tree_insert(&sbinfo->au_si_pid.tree, current->pid,
-				/*any valid ptr*/sb);
-	spin_unlock(&sbinfo->au_si_pid.tree_lock);
-	AuDebugOn(err);
-	radix_tree_preload_end();
-}
-
-void si_pid_clr_slow(struct super_block *sb)
-{
-	void *p;
-	struct au_sbinfo *sbinfo;
-
-	AuDebugOn(!si_pid_test_slow(sb));
-
-	sbinfo = au_sbi(sb);
-	spin_lock(&sbinfo->au_si_pid.tree_lock);
-	p = radix_tree_delete(&sbinfo->au_si_pid.tree, current->pid);
-	spin_unlock(&sbinfo->au_si_pid.tree_lock);
-}