int au_finfo_init(struct file *file)
{
struct au_finfo *finfo;
struct dentry *dentry;
unsigned long ul;
dentry = file->f_dentry;
finfo = au_cache_alloc_finfo();
if (unlikely(!finfo))
goto out;
finfo->fi_hfile = kcalloc(au_sbend(dentry->d_sb) + 1,
sizeof(*finfo->fi_hfile), GFP_NOFS);
if (unlikely(!finfo->fi_hfile))
goto out_finfo;
au_rw_init_wlock(&finfo->fi_rwsem);
finfo->fi_bstart = -1;
finfo->fi_bend = -1;
atomic_set(&finfo->fi_generation, au_digen(dentry));
/* smp_mb(); */ /* atomic_set */
/* cf. au_store_oflag() */
/* suppress a warning in lp64 */
ul = (unsigned long)file->private_data;
file->f_mode |= (vfsub_uint_to_fmode(ul) & FMODE_EXEC);
file->private_data = finfo;
return 0; /* success */
out_finfo:
au_cache_free_finfo(finfo);
out:
return -ENOMEM;
}
int au_si_alloc(struct super_block *sb)
{
int err;
struct au_sbinfo *sbinfo;
err = -ENOMEM;
sbinfo = kzalloc(sizeof(*sbinfo), GFP_NOFS);
if (unlikely(!sbinfo))
goto out;
/* will be reallocated separately */
sbinfo->si_branch = kzalloc(sizeof(*sbinfo->si_branch), GFP_NOFS);
if (unlikely(!sbinfo->si_branch))
goto out_sbinfo;
err = sysaufs_si_init(sbinfo);
if (unlikely(err))
goto out_br;
au_nwt_init(&sbinfo->si_nowait);
au_rw_init_wlock(&sbinfo->si_rwsem);
sbinfo->si_bend = -1;
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;
sbinfo->si_mntflags = AuOpt_Def;
mutex_init(&sbinfo->si_xib_mtx);
sbinfo->si_xino_brid = -1;
/* leave si_xib_last_pindex and si_xib_next_bit */
sbinfo->si_rdcache = AUFS_RDCACHE_DEF * HZ;
sbinfo->si_rdblk = AUFS_RDBLK_DEF;
sbinfo->si_rdhash = AUFS_RDHASH_DEF;
sbinfo->si_dirwh = AUFS_DIRWH_DEF;
au_spl_init(&sbinfo->si_plink);
init_waitqueue_head(&sbinfo->si_plink_wq);
spin_lock_init(&sbinfo->si_plink_maint_lock);
/* leave other members for sysaufs and si_mnt. */
sbinfo->si_sb = sb;
sb->s_fs_info = sbinfo;
au_debug_sbinfo_init(sbinfo);
return 0; /* success */
out_br:
kfree(sbinfo->si_branch);
out_sbinfo:
kfree(sbinfo);
out:
return err;
}
int au_si_alloc(struct super_block *sb)
{
int err;
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_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;
sbinfo->si_mntflags = au_opts_plink(AuOpt_Def);
mutex_init(&sbinfo->si_xib_mtx);
sbinfo->si_xino_brid = -1;
/* leave si_xib_last_pindex and si_xib_next_bit */
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;
au_spl_init(&sbinfo->si_plink);
init_waitqueue_head(&sbinfo->si_plink_wq);
spin_lock_init(&sbinfo->si_plink_maint_lock);
/* leave other members for sysaufs and si_mnt. */
sbinfo->si_sb = sb;
sb->s_fs_info = sbinfo;
si_pid_set(sb);
au_debug_sbinfo_init(sbinfo);
return 0; /* success */
out_br:
kfree(sbinfo->si_branch);
out_pidmap:
kfree(sbinfo->au_si_pid.bitmap);
out_sbinfo:
kfree(sbinfo);
out:
return err;
}
