/*
* free a single branch
*/
static void au_br_do_free(struct au_branch *br)
{
int i;
struct au_wbr *wbr;
struct au_dykey **key;
au_hnotify_fin_br(br);
if (br->br_xino.xi_file)
fput(br->br_xino.xi_file);
mutex_destroy(&br->br_xino.xi_nondir_mtx);
AuDebugOn(atomic_read(&br->br_count));
wbr = br->br_wbr;
if (wbr) {
for (i = 0; i < AuBrWh_Last; i++)
dput(wbr->wbr_wh[i]);
AuDebugOn(atomic_read(&wbr->wbr_wh_running));
AuRwDestroy(&wbr->wbr_wh_rwsem);
}
key = br->br_dykey;
for (i = 0; i < AuBrDynOp; i++, key++)
if (*key)
au_dy_put(*key);
else
break;
mntput(br->br_mnt);
kfree(wbr);
kfree(br);
}
/*
* they are necessary regardless sysfs is disabled.
*/
void au_si_free(struct kobject *kobj)
{
struct au_sbinfo *sbinfo;
char *locked __maybe_unused; /* debug only */
sbinfo = container_of(kobj, struct au_sbinfo, si_kobj);
AuDebugOn(!list_empty(&sbinfo->si_plink.head));
AuDebugOn(atomic_read(&sbinfo->si_nowait.nw_len));
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);
}
static void aufs_d_release(struct dentry *dentry)
{
struct au_dinfo *dinfo;
aufs_bindex_t bend, bindex;
dinfo = dentry->d_fsdata;
if (!dinfo)
return;
/* dentry may not be revalidated */
bindex = dinfo->di_bstart;
if (bindex >= 0) {
struct au_hdentry *p;
bend = dinfo->di_bend;
p = dinfo->di_hdentry + bindex;
while (bindex++ <= bend) {
if (p->hd_dentry)
au_hdput(p);
p++;
}
}
kfree(dinfo->di_hdentry);
AuRwDestroy(&dinfo->di_rwsem);
au_cache_free_dinfo(dinfo);
au_hin_di_reinit(dentry);
}
void au_di_fin(struct dentry *dentry)
{
struct au_dinfo *dinfo;
dinfo = au_di(dentry);
AuRwDestroy(&dinfo->di_rwsem);
au_di_free(dinfo);
}
void au_finfo_fin(struct file *file)
{
struct au_finfo *finfo;
finfo = au_fi(file);
AuDebugOn(finfo->fi_hdir);
AuRwDestroy(&finfo->fi_rwsem);
au_cache_free_finfo(finfo);
}
void au_finfo_fin(struct file *file)
{
struct au_finfo *finfo;
au_nfiles_dec(file->f_dentry->d_sb);
finfo = au_fi(file);
AuDebugOn(finfo->fi_hdir);
AuRwDestroy(&finfo->fi_rwsem);
au_cache_free_finfo(finfo);
}
/*
* they are necessary regardless sysfs is disabled.
*/
void au_si_free(struct kobject *kobj)
{
struct au_sbinfo *sbinfo;
struct super_block *sb;
sbinfo = container_of(kobj, struct au_sbinfo, si_kobj);
AuDebugOn(!list_empty(&sbinfo->si_plink.head));
AuDebugOn(sbinfo->si_plink_maint);
sb = sbinfo->si_sb;
si_write_lock(sb);
au_xino_clr(sb);
au_br_free(sbinfo);
kfree(sbinfo->si_branch);
mutex_destroy(&sbinfo->si_xib_mtx);
si_write_unlock(sb);
AuRwDestroy(&sbinfo->si_rwsem);
kfree(sbinfo);
}
void au_finfo_fin(struct file *file)
{
struct au_finfo *finfo;
aufs_bindex_t bindex, bend;
fi_write_lock(file);
bend = au_fbend(file);
bindex = au_fbstart(file);
if (bindex >= 0)
/*
* calls fput() instead of filp_close(),
* since no dnotify or lock for the lower file.
*/
for (; bindex <= bend; bindex++)
au_set_h_fptr(file, bindex, NULL);
finfo = au_fi(file);
au_dbg_verify_hf(finfo);
kfree(finfo->fi_hfile);
fi_write_unlock(file);
AuRwDestroy(&finfo->fi_rwsem);
au_cache_free_finfo(finfo);
}
