From e5fd91f1ef340da553f7a79da9540c3db711c937 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Tue, 8 Sep 2015 01:01:14 -0300 Subject: Linux-libre 4.2-gnu --- fs/aufs/iinfo.c | 277 -------------------------------------------------------- 1 file changed, 277 deletions(-) delete mode 100644 fs/aufs/iinfo.c (limited to 'fs/aufs/iinfo.c') 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 . - */ - -/* - * 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); -} -- cgit v1.2.3-54-g00ecf