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-rw-r--r--fs/aufs/iinfo.c277
1 files changed, 0 insertions, 277 deletions
diff --git a/fs/aufs/iinfo.c b/fs/aufs/iinfo.c
deleted file mode 100644
index 0eaa7de7e..000000000
--- a/fs/aufs/iinfo.c
+++ /dev/null
@@ -1,277 +0,0 @@
-/*
- * Copyright (C) 2005-2015 Junjiro R. Okajima
- *
- * This program, aufs is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * 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, see <http://www.gnu.org/licenses/>.
- */
-
-/*
- * inode private data
- */
-
-#include "aufs.h"
-
-struct inode *au_h_iptr(struct inode *inode, aufs_bindex_t bindex)
-{
- struct inode *h_inode;
-
- IiMustAnyLock(inode);
-
- h_inode = au_ii(inode)->ii_hinode[0 + bindex].hi_inode;
- AuDebugOn(h_inode && atomic_read(&h_inode->i_count) <= 0);
- return h_inode;
-}
-
-/* todo: hard/soft set? */
-void au_hiput(struct au_hinode *hinode)
-{
- au_hn_free(hinode);
- dput(hinode->hi_whdentry);
- iput(hinode->hi_inode);
-}
-
-unsigned int au_hi_flags(struct inode *inode, int isdir)
-{
- unsigned int flags;
- const unsigned int mnt_flags = au_mntflags(inode->i_sb);
-
- flags = 0;
- if (au_opt_test(mnt_flags, XINO))
- au_fset_hi(flags, XINO);
- if (isdir && au_opt_test(mnt_flags, UDBA_HNOTIFY))
- au_fset_hi(flags, HNOTIFY);
- return flags;
-}
-
-void au_set_h_iptr(struct inode *inode, aufs_bindex_t bindex,
- struct inode *h_inode, unsigned int flags)
-{
- struct au_hinode *hinode;
- struct inode *hi;
- struct au_iinfo *iinfo = au_ii(inode);
-
- IiMustWriteLock(inode);
-
- hinode = iinfo->ii_hinode + bindex;
- hi = hinode->hi_inode;
- AuDebugOn(h_inode && atomic_read(&h_inode->i_count) <= 0);
-
- if (hi)
- au_hiput(hinode);
- hinode->hi_inode = h_inode;
- if (h_inode) {
- int err;
- struct super_block *sb = inode->i_sb;
- struct au_branch *br;
-
- AuDebugOn(inode->i_mode
- && (h_inode->i_mode & S_IFMT)
- != (inode->i_mode & S_IFMT));
- if (bindex == iinfo->ii_bstart)
- au_cpup_igen(inode, h_inode);
- br = au_sbr(sb, bindex);
- hinode->hi_id = br->br_id;
- if (au_ftest_hi(flags, XINO)) {
- err = au_xino_write(sb, bindex, h_inode->i_ino,
- inode->i_ino);
- if (unlikely(err))
- AuIOErr1("failed au_xino_write() %d\n", err);
- }
-
- if (au_ftest_hi(flags, HNOTIFY)
- && au_br_hnotifyable(br->br_perm)) {
- err = au_hn_alloc(hinode, inode);
- if (unlikely(err))
- AuIOErr1("au_hn_alloc() %d\n", err);
- }
- }
-}
-
-void au_set_hi_wh(struct inode *inode, aufs_bindex_t bindex,
- struct dentry *h_wh)
-{
- struct au_hinode *hinode;
-
- IiMustWriteLock(inode);
-
- hinode = au_ii(inode)->ii_hinode + bindex;
- AuDebugOn(hinode->hi_whdentry);
- hinode->hi_whdentry = h_wh;
-}
-
-void au_update_iigen(struct inode *inode, int half)
-{
- struct au_iinfo *iinfo;
- struct au_iigen *iigen;
- unsigned int sigen;
-
- sigen = au_sigen(inode->i_sb);
- iinfo = au_ii(inode);
- iigen = &iinfo->ii_generation;
- spin_lock(&iinfo->ii_genspin);
- iigen->ig_generation = sigen;
- if (half)
- au_ig_fset(iigen->ig_flags, HALF_REFRESHED);
- else
- au_ig_fclr(iigen->ig_flags, HALF_REFRESHED);
- spin_unlock(&iinfo->ii_genspin);
-}
-
-/* it may be called at remount time, too */
-void au_update_ibrange(struct inode *inode, int do_put_zero)
-{
- struct au_iinfo *iinfo;
- aufs_bindex_t bindex, bend;
-
- iinfo = au_ii(inode);
- if (!iinfo)
- return;
-
- IiMustWriteLock(inode);
-
- if (do_put_zero && iinfo->ii_bstart >= 0) {
- for (bindex = iinfo->ii_bstart; bindex <= iinfo->ii_bend;
- bindex++) {
- struct inode *h_i;
-
- h_i = iinfo->ii_hinode[0 + bindex].hi_inode;
- if (h_i
- && !h_i->i_nlink
- && !(h_i->i_state & I_LINKABLE))
- au_set_h_iptr(inode, bindex, NULL, 0);
- }
- }
-
- iinfo->ii_bstart = -1;
- iinfo->ii_bend = -1;
- bend = au_sbend(inode->i_sb);
- for (bindex = 0; bindex <= bend; bindex++)
- if (iinfo->ii_hinode[0 + bindex].hi_inode) {
- iinfo->ii_bstart = bindex;
- break;
- }
- if (iinfo->ii_bstart >= 0)
- for (bindex = bend; bindex >= iinfo->ii_bstart; bindex--)
- if (iinfo->ii_hinode[0 + bindex].hi_inode) {
- iinfo->ii_bend = bindex;
- break;
- }
- AuDebugOn(iinfo->ii_bstart > iinfo->ii_bend);
-}
-
-/* ---------------------------------------------------------------------- */
-
-void au_icntnr_init_once(void *_c)
-{
- struct au_icntnr *c = _c;
- struct au_iinfo *iinfo = &c->iinfo;
- static struct lock_class_key aufs_ii;
-
- spin_lock_init(&iinfo->ii_genspin);
- au_rw_init(&iinfo->ii_rwsem);
- au_rw_class(&iinfo->ii_rwsem, &aufs_ii);
- inode_init_once(&c->vfs_inode);
-}
-
-int au_iinfo_init(struct inode *inode)
-{
- struct au_iinfo *iinfo;
- struct super_block *sb;
- int nbr, i;
-
- sb = inode->i_sb;
- iinfo = &(container_of(inode, struct au_icntnr, vfs_inode)->iinfo);
- nbr = au_sbend(sb) + 1;
- if (unlikely(nbr <= 0))
- nbr = 1;
- iinfo->ii_hinode = kcalloc(nbr, sizeof(*iinfo->ii_hinode), GFP_NOFS);
- if (iinfo->ii_hinode) {
- au_ninodes_inc(sb);
- for (i = 0; i < nbr; i++)
- iinfo->ii_hinode[i].hi_id = -1;
-
- iinfo->ii_generation.ig_generation = au_sigen(sb);
- iinfo->ii_bstart = -1;
- iinfo->ii_bend = -1;
- iinfo->ii_vdir = NULL;
- return 0;
- }
- return -ENOMEM;
-}
-
-int au_ii_realloc(struct au_iinfo *iinfo, int nbr)
-{
- int err, sz;
- struct au_hinode *hip;
-
- AuRwMustWriteLock(&iinfo->ii_rwsem);
-
- err = -ENOMEM;
- sz = sizeof(*hip) * (iinfo->ii_bend + 1);
- if (!sz)
- sz = sizeof(*hip);
- hip = au_kzrealloc(iinfo->ii_hinode, sz, sizeof(*hip) * nbr, GFP_NOFS);
- if (hip) {
- iinfo->ii_hinode = hip;
- err = 0;
- }
-
- return err;
-}
-
-void au_iinfo_fin(struct inode *inode)
-{
- struct au_iinfo *iinfo;
- struct au_hinode *hi;
- struct super_block *sb;
- aufs_bindex_t bindex, bend;
- const unsigned char unlinked = !inode->i_nlink;
-
- iinfo = au_ii(inode);
- /* bad_inode case */
- if (!iinfo)
- return;
-
- sb = inode->i_sb;
- au_ninodes_dec(sb);
- if (si_pid_test(sb))
- au_xino_delete_inode(inode, unlinked);
- else {
- /*
- * it is safe to hide the dependency between sbinfo and
- * sb->s_umount.
- */
- lockdep_off();
- si_noflush_read_lock(sb);
- au_xino_delete_inode(inode, unlinked);
- si_read_unlock(sb);
- lockdep_on();
- }
-
- if (iinfo->ii_vdir)
- au_vdir_free(iinfo->ii_vdir);
-
- bindex = iinfo->ii_bstart;
- if (bindex >= 0) {
- hi = iinfo->ii_hinode + bindex;
- bend = iinfo->ii_bend;
- while (bindex++ <= bend) {
- if (hi->hi_inode)
- au_hiput(hi);
- hi++;
- }
- }
- kfree(iinfo->ii_hinode);
- iinfo->ii_hinode = NULL;
- AuRwDestroy(&iinfo->ii_rwsem);
-}
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