/*
* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
- * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
#include <linux/sort.h>
#include <linux/gfs2_ondisk.h>
#include <linux/crc32.h>
-#include <asm/semaphore.h>
#include "gfs2.h"
#include "lm_interface.h"
#include "quota.h"
#include "rgrp.h"
#include "trans.h"
-#include "unlinked.h"
#include "util.h"
/**
- * inode_attr_in - Copy attributes from the dinode into the VFS inode
+ * gfs2_inode_attr_in - Copy attributes from the dinode into the VFS inode
* @ip: The GFS2 inode (with embedded disk inode data)
* @inode: The Linux VFS inode
*
*/
-static void inode_attr_in(struct gfs2_inode *ip, struct inode *inode)
+void gfs2_inode_attr_in(struct gfs2_inode *ip)
{
- inode->i_ino = ip->i_num.no_formal_ino;
+ struct inode *inode = &ip->i_inode;
+
+ inode->i_ino = ip->i_num.no_addr;
switch (ip->i_di.di_mode & S_IFMT) {
case S_IFBLK:
inode->i_ctime.tv_nsec = 0;
inode->i_blksize = PAGE_SIZE;
inode->i_blocks = ip->i_di.di_blocks <<
- (ip->i_sbd->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
+ (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
if (ip->i_di.di_flags & GFS2_DIF_IMMUTABLE)
inode->i_flags |= S_IMMUTABLE;
inode->i_flags &= ~S_APPEND;
}
-/**
- * gfs2_inode_attr_in - Copy attributes from the dinode into the VFS inode
- * @ip: The GFS2 inode (with embedded disk inode data)
- *
- */
-
-void gfs2_inode_attr_in(struct gfs2_inode *ip)
-{
- struct inode *inode;
-
- inode = gfs2_ip2v_lookup(ip);
- if (inode) {
- inode_attr_in(ip, inode);
- iput(inode);
- }
-}
-
/**
* gfs2_inode_attr_out - Copy attributes from VFS inode into the dinode
* @ip: The GFS2 inode
void gfs2_inode_attr_out(struct gfs2_inode *ip)
{
- struct inode *inode = ip->i_vnode;
+ struct inode *inode = &ip->i_inode;
- gfs2_assert_withdraw(ip->i_sbd,
+ gfs2_assert_withdraw(GFS2_SB(inode),
(ip->i_di.di_mode & S_IFMT) == (inode->i_mode & S_IFMT));
ip->i_di.di_mode = inode->i_mode;
ip->i_di.di_uid = inode->i_uid;
ip->i_di.di_ctime = inode->i_ctime.tv_sec;
}
-/**
- * gfs2_ip2v_lookup - Get the struct inode for a struct gfs2_inode
- * @ip: the struct gfs2_inode to get the struct inode for
- *
- * Returns: A VFS inode, or NULL if none
- */
+static int iget_test(struct inode *inode, void *opaque)
+{
+ struct gfs2_inode *ip = GFS2_I(inode);
+ struct gfs2_inum *inum = opaque;
+
+ if (ip && ip->i_num.no_addr == inum->no_addr)
+ return 1;
+
+ return 0;
+}
-struct inode *gfs2_ip2v_lookup(struct gfs2_inode *ip)
+static int iget_set(struct inode *inode, void *opaque)
{
- struct inode *inode = NULL;
+ struct gfs2_inode *ip = GFS2_I(inode);
+ struct gfs2_inum *inum = opaque;
- gfs2_assert_warn(ip->i_sbd, test_bit(GIF_MIN_INIT, &ip->i_flags));
+ ip->i_num = *inum;
+ return 0;
+}
- spin_lock(&ip->i_spin);
- if (ip->i_vnode)
- inode = igrab(ip->i_vnode);
- spin_unlock(&ip->i_spin);
+struct inode *gfs2_ilookup(struct super_block *sb, struct gfs2_inum *inum)
+{
+ return ilookup5(sb, (unsigned long)inum->no_formal_ino,
+ iget_test, inum);
+}
- return inode;
+static struct inode *gfs2_iget(struct super_block *sb, struct gfs2_inum *inum)
+{
+ return iget5_locked(sb, (unsigned long)inum->no_formal_ino,
+ iget_test, iget_set, inum);
}
/**
- * gfs2_ip2v - Get/Create a struct inode for a struct gfs2_inode
- * @ip: the struct gfs2_inode to get the struct inode for
+ * gfs2_inode_lookup - Lookup an inode
+ * @sb: The super block
+ * @inum: The inode number
+ * @type: The type of the inode
*
- * Returns: A VFS inode, or NULL if no mem
+ * Returns: A VFS inode, or an error
*/
-struct inode *gfs2_ip2v(struct gfs2_inode *ip)
+struct inode *gfs2_inode_lookup(struct super_block *sb, struct gfs2_inum *inum, unsigned int type)
{
- struct inode *inode, *tmp;
-
- inode = gfs2_ip2v_lookup(ip);
- if (inode)
- return inode;
-
- tmp = new_inode(ip->i_sbd->sd_vfs);
- if (!tmp)
- return NULL;
-
- inode_attr_in(ip, tmp);
-
- if (S_ISREG(ip->i_di.di_mode)) {
- tmp->i_op = &gfs2_file_iops;
- tmp->i_fop = &gfs2_file_fops;
- tmp->i_mapping->a_ops = &gfs2_file_aops;
- } else if (S_ISDIR(ip->i_di.di_mode)) {
- tmp->i_op = &gfs2_dir_iops;
- tmp->i_fop = &gfs2_dir_fops;
- } else if (S_ISLNK(ip->i_di.di_mode)) {
- tmp->i_op = &gfs2_symlink_iops;
- } else {
- tmp->i_op = &gfs2_dev_iops;
- init_special_inode(tmp, tmp->i_mode, tmp->i_rdev);
- }
-
- tmp->u.generic_ip = NULL;
-
- for (;;) {
- spin_lock(&ip->i_spin);
- if (!ip->i_vnode)
- break;
- inode = igrab(ip->i_vnode);
- spin_unlock(&ip->i_spin);
+ struct inode *inode = gfs2_iget(sb, inum);
+ struct gfs2_inode *ip = GFS2_I(inode);
+ struct gfs2_glock *io_gl;
+ int error;
- if (inode) {
- iput(tmp);
- return inode;
+ if (inode->i_state & I_NEW) {
+ struct gfs2_sbd *sdp = GFS2_SB(inode);
+ umode_t mode = DT2IF(type);
+ inode->u.generic_ip = ip;
+ inode->i_mode = mode;
+
+ if (S_ISREG(mode)) {
+ inode->i_op = &gfs2_file_iops;
+ inode->i_fop = &gfs2_file_fops;
+ inode->i_mapping->a_ops = &gfs2_file_aops;
+ } else if (S_ISDIR(mode)) {
+ inode->i_op = &gfs2_dir_iops;
+ inode->i_fop = &gfs2_dir_fops;
+ } else if (S_ISLNK(mode)) {
+ inode->i_op = &gfs2_symlink_iops;
+ } else {
+ inode->i_op = &gfs2_dev_iops;
}
- yield();
- }
- inode = tmp;
+ error = gfs2_glock_get(sdp, inum->no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl);
+ if (unlikely(error))
+ goto fail;
+ ip->i_gl->gl_object = ip;
- gfs2_inode_hold(ip);
- ip->i_vnode = inode;
- inode->u.generic_ip = ip;
+ error = gfs2_glock_get(sdp, inum->no_addr, &gfs2_iopen_glops, CREATE, &io_gl);
+ if (unlikely(error))
+ goto fail_put;
- spin_unlock(&ip->i_spin);
+ ip->i_vn = ip->i_gl->gl_vn - 1;
+ error = gfs2_glock_nq_init(io_gl, LM_ST_SHARED, GL_EXACT, &ip->i_iopen_gh);
+ if (unlikely(error))
+ goto fail_iopen;
- insert_inode_hash(inode);
+ gfs2_glock_put(io_gl);
+ unlock_new_inode(inode);
+ }
return inode;
-}
-
-static int iget_test(struct inode *inode, void *opaque)
-{
- struct gfs2_inode *ip = inode->u.generic_ip;
- struct gfs2_inum *inum = (struct gfs2_inum *)opaque;
-
- if (ip && ip->i_num.no_addr == inum->no_addr)
- return 1;
-
- return 0;
-}
-
-struct inode *gfs2_iget(struct super_block *sb, struct gfs2_inum *inum)
-{
- return ilookup5(sb, (unsigned long)inum->no_formal_ino,
- iget_test, inum);
-}
-
-void gfs2_inode_min_init(struct gfs2_inode *ip, unsigned int type)
-{
- if (!test_and_set_bit(GIF_MIN_INIT, &ip->i_flags)) {
- ip->i_di.di_nlink = 1;
- ip->i_di.di_mode = DT2IF(type);
- }
+fail_iopen:
+ gfs2_glock_put(io_gl);
+fail_put:
+ ip->i_gl->gl_object = NULL;
+ gfs2_glock_put(ip->i_gl);
+fail:
+ iput(inode);
+ return ERR_PTR(error);
}
/**
if (error)
return error;
- if (gfs2_metatype_check(ip->i_sbd, dibh, GFS2_METATYPE_DI)) {
+ if (gfs2_metatype_check(GFS2_SB(&ip->i_inode), dibh, GFS2_METATYPE_DI)) {
brelse(dibh);
return -EIO;
}
gfs2_dinode_in(&ip->i_di, dibh->b_data);
- set_bit(GIF_MIN_INIT, &ip->i_flags);
brelse(dibh);
return 0;
}
-/**
- * inode_create - create a struct gfs2_inode
- * @i_gl: The glock covering the inode
- * @inum: The inode number
- * @io_gl: the iopen glock to acquire/hold (using holder in new gfs2_inode)
- * @io_state: the state the iopen glock should be acquired in
- * @ipp: pointer to put the returned inode in
- *
- * Returns: errno
- */
-
-static int inode_create(struct gfs2_glock *i_gl, const struct gfs2_inum *inum,
- struct gfs2_glock *io_gl, unsigned int io_state,
- struct gfs2_inode **ipp)
+int gfs2_dinode_dealloc(struct gfs2_inode *ip)
{
- struct gfs2_sbd *sdp = i_gl->gl_sbd;
- struct gfs2_inode *ip;
- int error = 0;
-
- ip = kmem_cache_alloc(gfs2_inode_cachep, GFP_KERNEL);
- if (!ip)
- return -ENOMEM;
- memset(ip, 0, sizeof(struct gfs2_inode));
-
- ip->i_num = *inum;
-
- atomic_set(&ip->i_count, 1);
-
- ip->i_vn = i_gl->gl_vn - 1;
-
- ip->i_gl = i_gl;
- ip->i_sbd = sdp;
-
- spin_lock_init(&ip->i_spin);
- init_rwsem(&ip->i_rw_mutex);
-
- ip->i_greedy = gfs2_tune_get(sdp, gt_greedy_default);
-
- error = gfs2_glock_nq_init(io_gl,
- io_state, GL_LOCAL_EXCL | GL_EXACT,
- &ip->i_iopen_gh);
- if (error)
- goto fail;
- ip->i_iopen_gh.gh_owner = NULL;
-
- spin_lock(&io_gl->gl_spin);
- gfs2_glock_hold(i_gl);
- io_gl->gl_object = i_gl;
- spin_unlock(&io_gl->gl_spin);
-
- gfs2_glock_hold(i_gl);
- i_gl->gl_object = ip;
-
- atomic_inc(&sdp->sd_inode_count);
-
- *ipp = ip;
-
- return 0;
-
- fail:
- gfs2_meta_cache_flush(ip);
- kmem_cache_free(gfs2_inode_cachep, ip);
- *ipp = NULL;
-
- return error;
-}
-
-/**
- * gfs2_inode_get - Create or get a reference on an inode
- * @i_gl: The glock covering the inode
- * @inum: The inode number
- * @create:
- * @ipp: pointer to put the returned inode in
- *
- * Returns: errno
- */
-
-int gfs2_inode_get(struct gfs2_glock *i_gl, const struct gfs2_inum *inum,
- int create, struct gfs2_inode **ipp)
-{
- struct gfs2_sbd *sdp = i_gl->gl_sbd;
- struct gfs2_glock *io_gl;
- int error = 0;
-
- gfs2_glmutex_lock(i_gl);
-
- *ipp = i_gl->gl_object;
- if (*ipp) {
- error = -ESTALE;
- if ((*ipp)->i_num.no_formal_ino != inum->no_formal_ino)
- goto out;
- atomic_inc(&(*ipp)->i_count);
- error = 0;
- goto out;
- }
-
- if (!create)
- goto out;
-
- error = gfs2_glock_get(sdp, inum->no_addr, &gfs2_iopen_glops,
- CREATE, &io_gl);
- if (!error) {
- error = inode_create(i_gl, inum, io_gl, LM_ST_SHARED, ipp);
- gfs2_glock_put(io_gl);
- }
-
- out:
- gfs2_glmutex_unlock(i_gl);
-
- return error;
-}
-
-void gfs2_inode_hold(struct gfs2_inode *ip)
-{
- gfs2_assert(ip->i_sbd, atomic_read(&ip->i_count) > 0);
- atomic_inc(&ip->i_count);
-}
-
-void gfs2_inode_put(struct gfs2_inode *ip)
-{
- gfs2_assert(ip->i_sbd, atomic_read(&ip->i_count) > 0);
- atomic_dec(&ip->i_count);
-}
-
-void gfs2_inode_destroy(struct gfs2_inode *ip)
-{
- struct gfs2_sbd *sdp = ip->i_sbd;
- struct gfs2_glock *io_gl = ip->i_iopen_gh.gh_gl;
- struct gfs2_glock *i_gl = ip->i_gl;
-
- gfs2_assert_warn(sdp, !atomic_read(&ip->i_count));
- gfs2_assert(sdp, io_gl->gl_object == i_gl);
-
- spin_lock(&io_gl->gl_spin);
- io_gl->gl_object = NULL;
- gfs2_glock_put(i_gl);
- spin_unlock(&io_gl->gl_spin);
-
- gfs2_glock_dq_uninit(&ip->i_iopen_gh);
-
- gfs2_meta_cache_flush(ip);
- kmem_cache_free(gfs2_inode_cachep, ip);
-
- i_gl->gl_object = NULL;
- gfs2_glock_put(i_gl);
-
- atomic_dec(&sdp->sd_inode_count);
-}
-
-static int dinode_dealloc(struct gfs2_inode *ip, struct gfs2_unlinked *ul)
-{
- struct gfs2_sbd *sdp = ip->i_sbd;
+ struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct gfs2_alloc *al;
struct gfs2_rgrpd *rgd;
int error;
if (error)
goto out_rindex_relse;
- error = gfs2_trans_begin(sdp, RES_RG_BIT + RES_UNLINKED +
+ error = gfs2_trans_begin(sdp, RES_RG_BIT +
RES_STATFS + RES_QUOTA, 1);
if (error)
goto out_rg_gunlock;
gfs2_free_di(rgd, ip);
- error = gfs2_unlinked_ondisk_rm(sdp, ul);
-
gfs2_trans_end(sdp);
clear_bit(GLF_STICKY, &ip->i_gl->gl_flags);
- out_rg_gunlock:
+out_rg_gunlock:
gfs2_glock_dq_uninit(&al->al_rgd_gh);
-
- out_rindex_relse:
+out_rindex_relse:
gfs2_glock_dq_uninit(&al->al_ri_gh);
-
- out_qs:
+out_qs:
gfs2_quota_unhold(ip);
-
- out:
+out:
gfs2_alloc_put(ip);
-
return error;
}
-/**
- * inode_dealloc - Deallocate all on-disk blocks for an inode (dinode)
- * @sdp: the filesystem
- * @inum: the inode number to deallocate
- * @io_gh: a holder for the iopen glock for this inode
- *
- * Returns: errno
- */
-
-static int inode_dealloc(struct gfs2_sbd *sdp, struct gfs2_unlinked *ul,
- struct gfs2_holder *io_gh)
-{
- struct gfs2_inode *ip;
- struct gfs2_holder i_gh;
- int error;
-
- error = gfs2_glock_nq_num(sdp,
- ul->ul_ut.ut_inum.no_addr, &gfs2_inode_glops,
- LM_ST_EXCLUSIVE, 0, &i_gh);
- if (error)
- return error;
-
- /* We reacquire the iopen lock here to avoid a race with the NFS server
- calling gfs2_read_inode() with the inode number of a inode we're in
- the process of deallocating. And we can't keep our hold on the lock
- from inode_dealloc_init() for deadlock reasons. */
-
- gfs2_holder_reinit(LM_ST_EXCLUSIVE, LM_FLAG_TRY, io_gh);
- error = gfs2_glock_nq(io_gh);
- switch (error) {
- case 0:
- break;
- case GLR_TRYFAILED:
- error = 1;
- default:
- goto out;
- }
-
- gfs2_assert_warn(sdp, !i_gh.gh_gl->gl_object);
- error = inode_create(i_gh.gh_gl, &ul->ul_ut.ut_inum, io_gh->gh_gl,
- LM_ST_EXCLUSIVE, &ip);
-
- gfs2_glock_dq(io_gh);
-
- if (error)
- goto out;
-
- error = gfs2_inode_refresh(ip);
- if (error)
- goto out_iput;
-
- if (ip->i_di.di_nlink) {
- if (gfs2_consist_inode(ip))
- gfs2_dinode_print(&ip->i_di);
- error = -EIO;
- goto out_iput;
- }
-
- if (S_ISDIR(ip->i_di.di_mode) &&
- (ip->i_di.di_flags & GFS2_DIF_EXHASH)) {
- error = gfs2_dir_exhash_dealloc(ip);
- if (error)
- goto out_iput;
- }
-
- if (ip->i_di.di_eattr) {
- error = gfs2_ea_dealloc(ip);
- if (error)
- goto out_iput;
- }
-
- if (!gfs2_is_stuffed(ip)) {
- error = gfs2_file_dealloc(ip);
- if (error)
- goto out_iput;
- }
-
- error = dinode_dealloc(ip, ul);
- if (error)
- goto out_iput;
-
- out_iput:
- gfs2_glmutex_lock(i_gh.gh_gl);
- gfs2_inode_put(ip);
- gfs2_inode_destroy(ip);
- gfs2_glmutex_unlock(i_gh.gh_gl);
-
- out:
- gfs2_glock_dq_uninit(&i_gh);
-
- return error;
-}
-
-/**
- * try_inode_dealloc - Try to deallocate an inode and all its blocks
- * @sdp: the filesystem
- *
- * Returns: 0 on success, -errno on error, 1 on busy (inode open)
- */
-
-static int try_inode_dealloc(struct gfs2_sbd *sdp, struct gfs2_unlinked *ul)
-{
- struct gfs2_holder io_gh;
- int error = 0;
-
- gfs2_try_toss_inode(sdp, &ul->ul_ut.ut_inum);
-
- error = gfs2_glock_nq_num(sdp,
- ul->ul_ut.ut_inum.no_addr, &gfs2_iopen_glops,
- LM_ST_EXCLUSIVE, LM_FLAG_TRY_1CB, &io_gh);
- switch (error) {
- case 0:
- break;
- case GLR_TRYFAILED:
- return 1;
- default:
- return error;
- }
-
- gfs2_glock_dq(&io_gh);
- error = inode_dealloc(sdp, ul, &io_gh);
- gfs2_holder_uninit(&io_gh);
-
- return error;
-}
-
-static int inode_dealloc_uninit(struct gfs2_sbd *sdp, struct gfs2_unlinked *ul)
-{
- struct gfs2_rgrpd *rgd;
- struct gfs2_holder ri_gh, rgd_gh;
- int error;
-
- error = gfs2_rindex_hold(sdp, &ri_gh);
- if (error)
- return error;
-
- rgd = gfs2_blk2rgrpd(sdp, ul->ul_ut.ut_inum.no_addr);
- if (!rgd) {
- gfs2_consist(sdp);
- error = -EIO;
- goto out;
- }
-
- error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, &rgd_gh);
- if (error)
- goto out;
-
- error = gfs2_trans_begin(sdp,
- RES_RG_BIT + RES_UNLINKED + RES_STATFS,
- 0);
- if (error)
- goto out_gunlock;
-
- gfs2_free_uninit_di(rgd, ul->ul_ut.ut_inum.no_addr);
- gfs2_unlinked_ondisk_rm(sdp, ul);
-
- gfs2_trans_end(sdp);
-
- out_gunlock:
- gfs2_glock_dq_uninit(&rgd_gh);
- out:
- gfs2_glock_dq_uninit(&ri_gh);
-
- return error;
-}
-
-int gfs2_inode_dealloc(struct gfs2_sbd *sdp, struct gfs2_unlinked *ul)
-{
- if (ul->ul_ut.ut_flags & GFS2_UTF_UNINIT)
- return inode_dealloc_uninit(sdp, ul);
- else
- return try_inode_dealloc(sdp, ul);
-}
-
/**
* gfs2_change_nlink - Change nlink count on inode
* @ip: The GFS2 inode
int gfs2_change_nlink(struct gfs2_inode *ip, int diff)
{
+ struct gfs2_sbd *sdp = ip->i_inode.i_sb->s_fs_info;
struct buffer_head *dibh;
uint32_t nlink;
int error;
+ BUG_ON(ip->i_di.di_nlink != ip->i_inode.i_nlink);
nlink = ip->i_di.di_nlink + diff;
/* If we are reducing the nlink count, but the new value ends up being
ip->i_di.di_nlink = nlink;
ip->i_di.di_ctime = get_seconds();
+ ip->i_inode.i_nlink = nlink;
gfs2_trans_add_bh(ip->i_gl, dibh, 1);
gfs2_dinode_out(&ip->i_di, dibh->b_data);
brelse(dibh);
+ mark_inode_dirty(&ip->i_inode);
- return 0;
+ if (ip->i_di.di_nlink == 0) {
+ struct gfs2_rgrpd *rgd;
+ struct gfs2_holder ri_gh, rg_gh;
+
+ error = gfs2_rindex_hold(sdp, &ri_gh);
+ if (error)
+ goto out;
+ error = -EIO;
+ rgd = gfs2_blk2rgrpd(sdp, ip->i_num.no_addr);
+ if (!rgd)
+ goto out_norgrp;
+ error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, &rg_gh);
+ if (error)
+ goto out_norgrp;
+
+ gfs2_unlink_di(&ip->i_inode); /* mark inode unlinked */
+ gfs2_glock_dq_uninit(&rg_gh);
+out_norgrp:
+ gfs2_glock_dq_uninit(&ri_gh);
+ }
+out:
+ return error;
}
struct inode *gfs2_lookup_simple(struct inode *dip, const char *name)
* Returns: errno
*/
-struct inode *gfs2_lookupi(struct inode *dir, struct qstr *name, int is_root,
- struct nameidata *nd)
+struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
+ int is_root, struct nameidata *nd)
{
struct super_block *sb = dir->i_sb;
- struct gfs2_inode *ipp;
- struct gfs2_inode *dip = dir->u.generic_ip;
- struct gfs2_sbd *sdp = dip->i_sbd;
+ struct gfs2_inode *dip = GFS2_I(dir);
struct gfs2_holder d_gh;
struct gfs2_inum inum;
unsigned int type;
- struct gfs2_glock *gl;
int error = 0;
struct inode *inode = NULL;
if ((name->len == 1 && memcmp(name->name, ".", 1) == 0) ||
(name->len == 2 && memcmp(name->name, "..", 2) == 0 &&
dir == sb->s_root->d_inode)) {
- gfs2_inode_hold(dip);
- ipp = dip;
- goto done;
+ igrab(dir);
+ return dir;
}
error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, &d_gh);
return ERR_PTR(error);
if (!is_root) {
- error = gfs2_repermission(dip->i_vnode, MAY_EXEC, NULL);
+ error = permission(dir, MAY_EXEC, NULL);
if (error)
goto out;
}
if (error)
goto out;
- error = gfs2_glock_get(sdp, inum.no_addr, &gfs2_inode_glops,
- CREATE, &gl);
- if (error)
- goto out;
-
- error = gfs2_inode_get(gl, &inum, CREATE, &ipp);
- if (!error)
- gfs2_inode_min_init(ipp, type);
-
- gfs2_glock_put(gl);
+ inode = gfs2_inode_lookup(sb, &inum, type);
out:
gfs2_glock_dq_uninit(&d_gh);
-done:
if (error == -ENOENT)
return NULL;
- if (error == 0) {
- inode = gfs2_ip2v(ipp);
- gfs2_inode_put(ipp);
- if (!inode)
- return ERR_PTR(-ENOMEM);
- return inode;
- }
- return ERR_PTR(error);
+ return inode;
}
static int pick_formal_ino_1(struct gfs2_sbd *sdp, uint64_t *formal_ino)
{
- struct gfs2_inode *ip = sdp->sd_ir_inode->u.generic_ip;
+ struct gfs2_inode *ip = GFS2_I(sdp->sd_ir_inode);
struct buffer_head *bh;
struct gfs2_inum_range ir;
int error;
static int pick_formal_ino_2(struct gfs2_sbd *sdp, uint64_t *formal_ino)
{
- struct gfs2_inode *ip = sdp->sd_ir_inode->u.generic_ip;
- struct gfs2_inode *m_ip = sdp->sd_inum_inode->u.generic_ip;
+ struct gfs2_inode *ip = GFS2_I(sdp->sd_ir_inode);
+ struct gfs2_inode *m_ip = GFS2_I(sdp->sd_inum_inode);
struct gfs2_holder gh;
struct buffer_head *bh;
struct gfs2_inum_range ir;
* Returns: errno
*/
-static int create_ok(struct gfs2_inode *dip, struct qstr *name,
+static int create_ok(struct gfs2_inode *dip, const struct qstr *name,
unsigned int mode)
{
int error;
- error = gfs2_repermission(dip->i_vnode, MAY_WRITE | MAY_EXEC, NULL);
+ error = permission(&dip->i_inode, MAY_WRITE | MAY_EXEC, NULL);
if (error)
return error;
if (!dip->i_di.di_nlink)
return -EPERM;
- error = gfs2_dir_search(dip->i_vnode, name, NULL, NULL);
+ error = gfs2_dir_search(&dip->i_inode, name, NULL, NULL);
switch (error) {
case -ENOENT:
error = 0;
static void munge_mode_uid_gid(struct gfs2_inode *dip, unsigned int *mode,
unsigned int *uid, unsigned int *gid)
{
- if (dip->i_sbd->sd_args.ar_suiddir &&
+ if (GFS2_SB(&dip->i_inode)->sd_args.ar_suiddir &&
(dip->i_di.di_mode & S_ISUID) &&
dip->i_di.di_uid) {
if (S_ISDIR(*mode))
*gid = current->fsgid;
}
-static int alloc_dinode(struct gfs2_inode *dip, struct gfs2_unlinked *ul)
+static int alloc_dinode(struct gfs2_inode *dip, struct gfs2_inum *inum,
+ u64 *generation)
{
- struct gfs2_sbd *sdp = dip->i_sbd;
+ struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
int error;
gfs2_alloc_get(dip);
if (error)
goto out;
- error = gfs2_trans_begin(sdp, RES_RG_BIT + RES_UNLINKED +
- RES_STATFS, 0);
+ error = gfs2_trans_begin(sdp, RES_RG_BIT + RES_STATFS, 0);
if (error)
goto out_ipreserv;
- ul->ul_ut.ut_inum.no_addr = gfs2_alloc_di(dip);
-
- ul->ul_ut.ut_flags = GFS2_UTF_UNINIT;
- error = gfs2_unlinked_ondisk_add(sdp, ul);
+ inum->no_addr = gfs2_alloc_di(dip, generation);
gfs2_trans_end(sdp);
- out_ipreserv:
+out_ipreserv:
gfs2_inplace_release(dip);
- out:
+out:
gfs2_alloc_put(dip);
return error;
*/
static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
- struct gfs2_inum *inum, unsigned int mode,
- unsigned int uid, unsigned int gid)
+ const struct gfs2_inum *inum, unsigned int mode,
+ unsigned int uid, unsigned int gid,
+ const u64 *generation)
{
- struct gfs2_sbd *sdp = dip->i_sbd;
+ struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
struct gfs2_dinode *di;
struct buffer_head *dibh;
di->di_atime = di->di_mtime = di->di_ctime = cpu_to_be64(get_seconds());
di->di_major = di->di_minor = cpu_to_be32(0);
di->di_goal_meta = di->di_goal_data = cpu_to_be64(inum->no_addr);
- di->__pad[0] = di->__pad[1] = 0;
+ di->di_generation = cpu_to_be64(*generation);
di->di_flags = cpu_to_be32(0);
if (S_ISREG(mode)) {
}
static int make_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
- unsigned int mode, struct gfs2_unlinked *ul)
+ unsigned int mode, const struct gfs2_inum *inum,
+ const u64 *generation)
{
- struct gfs2_sbd *sdp = dip->i_sbd;
+ struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
unsigned int uid, gid;
int error;
munge_mode_uid_gid(dip, &mode, &uid, &gid);
-
gfs2_alloc_get(dip);
error = gfs2_quota_lock(dip, uid, gid);
if (error)
goto out_quota;
- error = gfs2_trans_begin(sdp, RES_DINODE + RES_UNLINKED +
- RES_QUOTA, 0);
+ error = gfs2_trans_begin(sdp, RES_DINODE + RES_QUOTA, 0);
if (error)
goto out_quota;
- ul->ul_ut.ut_flags = 0;
- error = gfs2_unlinked_ondisk_munge(sdp, ul);
-
- init_dinode(dip, gl, &ul->ul_ut.ut_inum,
- mode, uid, gid);
-
+ init_dinode(dip, gl, inum, mode, uid, gid, generation);
gfs2_quota_change(dip, +1, uid, gid);
-
gfs2_trans_end(sdp);
- out_quota:
+out_quota:
gfs2_quota_unlock(dip);
-
- out:
+out:
gfs2_alloc_put(dip);
-
return error;
}
-static int link_dinode(struct gfs2_inode *dip, struct qstr *name,
- struct gfs2_inode *ip, struct gfs2_unlinked *ul)
+static int link_dinode(struct gfs2_inode *dip, const struct qstr *name,
+ struct gfs2_inode *ip)
{
- struct gfs2_sbd *sdp = dip->i_sbd;
+ struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
struct gfs2_alloc *al;
int alloc_required;
struct buffer_head *dibh;
if (error)
goto fail;
- error = alloc_required = gfs2_diradd_alloc_required(dip->i_vnode, name);
+ error = alloc_required = gfs2_diradd_alloc_required(&dip->i_inode, name);
if (alloc_required < 0)
goto fail;
if (alloc_required) {
if (error)
goto fail_quota_locks;
- error = gfs2_trans_begin(sdp,
- sdp->sd_max_dirres +
+ error = gfs2_trans_begin(sdp, sdp->sd_max_dirres +
al->al_rgd->rd_ri.ri_length +
- 2 * RES_DINODE + RES_UNLINKED +
+ 2 * RES_DINODE +
RES_STATFS + RES_QUOTA, 0);
if (error)
goto fail_ipreserv;
} else {
- error = gfs2_trans_begin(sdp,
- RES_LEAF +
- 2 * RES_DINODE +
- RES_UNLINKED, 0);
+ error = gfs2_trans_begin(sdp, RES_LEAF + 2 * RES_DINODE, 0);
if (error)
goto fail_quota_locks;
}
- error = gfs2_dir_add(dip->i_vnode, name, &ip->i_num, IF2DT(ip->i_di.di_mode));
+ error = gfs2_dir_add(&dip->i_inode, name, &ip->i_num, IF2DT(ip->i_di.di_mode));
if (error)
goto fail_end_trans;
gfs2_trans_add_bh(ip->i_gl, dibh, 1);
gfs2_dinode_out(&ip->i_di, dibh->b_data);
brelse(dibh);
-
- error = gfs2_unlinked_ondisk_rm(sdp, ul);
- if (error)
- goto fail_end_trans;
-
return 0;
- fail_end_trans:
+fail_end_trans:
gfs2_trans_end(sdp);
- fail_ipreserv:
+fail_ipreserv:
if (dip->i_alloc.al_rgd)
gfs2_inplace_release(dip);
- fail_quota_locks:
+fail_quota_locks:
gfs2_quota_unlock(dip);
- fail:
+fail:
gfs2_alloc_put(dip);
-
return error;
}
* Returns: An inode
*/
-struct inode *gfs2_createi(struct gfs2_holder *ghs, struct qstr *name,
+struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name,
unsigned int mode)
{
struct inode *inode;
struct gfs2_inode *dip = ghs->gh_gl->gl_object;
- struct gfs2_sbd *sdp = dip->i_sbd;
- struct gfs2_unlinked *ul;
- struct gfs2_inode *ip;
+ struct inode *dir = &dip->i_inode;
+ struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
+ struct gfs2_inum inum;
int error;
+ u64 generation;
if (!name->len || name->len > GFS2_FNAMESIZE)
return ERR_PTR(-ENAMETOOLONG);
- error = gfs2_unlinked_get(sdp, &ul);
- if (error)
- return ERR_PTR(error);
-
gfs2_holder_reinit(LM_ST_EXCLUSIVE, 0, ghs);
error = gfs2_glock_nq(ghs);
if (error)
if (error)
goto fail_gunlock;
- error = pick_formal_ino(sdp, &ul->ul_ut.ut_inum.no_formal_ino);
+ error = pick_formal_ino(sdp, &inum.no_formal_ino);
if (error)
goto fail_gunlock;
- error = alloc_dinode(dip, ul);
+ error = alloc_dinode(dip, &inum, &generation);
if (error)
goto fail_gunlock;
- if (ul->ul_ut.ut_inum.no_addr < dip->i_num.no_addr) {
+ if (inum.no_addr < dip->i_num.no_addr) {
gfs2_glock_dq(ghs);
- error = gfs2_glock_nq_num(sdp,
- ul->ul_ut.ut_inum.no_addr,
- &gfs2_inode_glops,
- LM_ST_EXCLUSIVE, GL_SKIP,
- ghs + 1);
+ error = gfs2_glock_nq_num(sdp, inum.no_addr,
+ &gfs2_inode_glops, LM_ST_EXCLUSIVE,
+ GL_SKIP, ghs + 1);
if (error) {
- gfs2_unlinked_put(sdp, ul);
return ERR_PTR(error);
}
error = gfs2_glock_nq(ghs);
if (error) {
gfs2_glock_dq_uninit(ghs + 1);
- gfs2_unlinked_put(sdp, ul);
return ERR_PTR(error);
}
if (error)
goto fail_gunlock2;
} else {
- error = gfs2_glock_nq_num(sdp,
- ul->ul_ut.ut_inum.no_addr,
- &gfs2_inode_glops,
- LM_ST_EXCLUSIVE, GL_SKIP,
- ghs + 1);
+ error = gfs2_glock_nq_num(sdp, inum.no_addr,
+ &gfs2_inode_glops, LM_ST_EXCLUSIVE,
+ GL_SKIP, ghs + 1);
if (error)
goto fail_gunlock;
}
- error = make_dinode(dip, ghs[1].gh_gl, mode, ul);
+ error = make_dinode(dip, ghs[1].gh_gl, mode, &inum, &generation);
if (error)
goto fail_gunlock2;
- error = gfs2_inode_get(ghs[1].gh_gl, &ul->ul_ut.ut_inum, CREATE, &ip);
- if (error)
+ inode = gfs2_inode_lookup(dir->i_sb, &inum, IF2DT(mode));
+ if (IS_ERR(inode))
goto fail_gunlock2;
- error = gfs2_inode_refresh(ip);
+ error = gfs2_inode_refresh(GFS2_I(inode));
if (error)
goto fail_iput;
- error = gfs2_acl_create(dip, ip);
+ error = gfs2_acl_create(dip, GFS2_I(inode));
if (error)
goto fail_iput;
- error = link_dinode(dip, name, ip, ul);
+ error = link_dinode(dip, name, GFS2_I(inode));
if (error)
goto fail_iput;
- gfs2_unlinked_put(sdp, ul);
-
- inode = gfs2_ip2v(ip);
- gfs2_inode_put(ip);
if (!inode)
return ERR_PTR(-ENOMEM);
return inode;
- fail_iput:
- gfs2_inode_put(ip);
-
- fail_gunlock2:
+fail_iput:
+ iput(inode);
+fail_gunlock2:
gfs2_glock_dq_uninit(ghs + 1);
-
- fail_gunlock:
+fail_gunlock:
gfs2_glock_dq(ghs);
-
- fail:
- gfs2_unlinked_put(sdp, ul);
-
+fail:
return ERR_PTR(error);
}
-/**
- * gfs2_unlinki - Unlink a file
- * @dip: The inode of the directory
- * @name: The name of the file to be unlinked
- * @ip: The inode of the file to be removed
- *
- * Assumes Glocks on both dip and ip are held.
- *
- * Returns: errno
- */
-
-int gfs2_unlinki(struct gfs2_inode *dip, struct qstr *name,
- struct gfs2_inode *ip, struct gfs2_unlinked *ul)
-{
- struct gfs2_sbd *sdp = dip->i_sbd;
- int error;
-
- error = gfs2_dir_del(dip, name);
- if (error)
- return error;
-
- error = gfs2_change_nlink(ip, -1);
- if (error)
- return error;
-
- /* If this inode is being unlinked from the directory structure,
- we need to mark that in the log so that it isn't lost during
- a crash. */
-
- if (!ip->i_di.di_nlink) {
- ul->ul_ut.ut_inum = ip->i_num;
- error = gfs2_unlinked_ondisk_add(sdp, ul);
- if (!error)
- set_bit(GLF_STICKY, &ip->i_gl->gl_flags);
- }
-
- return error;
-}
-
/**
* gfs2_rmdiri - Remove a directory
* @dip: The parent directory of the directory to be removed
* Returns: errno
*/
-int gfs2_rmdiri(struct gfs2_inode *dip, struct qstr *name,
- struct gfs2_inode *ip, struct gfs2_unlinked *ul)
+int gfs2_rmdiri(struct gfs2_inode *dip, const struct qstr *name,
+ struct gfs2_inode *ip)
{
- struct gfs2_sbd *sdp = dip->i_sbd;
struct qstr dotname;
int error;
if (error)
return error;
- dotname.len = 2;
- dotname.name = "..";
- dotname.hash = gfs2_disk_hash(dotname.name, dotname.len);
+ gfs2_str2qstr(&dotname, "..");
error = gfs2_dir_del(ip, &dotname);
if (error)
return error;
if (error)
return error;
- /* This inode is being unlinked from the directory structure and
- we need to mark that in the log so that it isn't lost during
- a crash. */
-
- ul->ul_ut.ut_inum = ip->i_num;
- error = gfs2_unlinked_ondisk_add(sdp, ul);
- if (!error)
- set_bit(GLF_STICKY, &ip->i_gl->gl_flags);
-
return error;
}
* Returns: 0 if the parent/child relationship is correct, errno if it isn't
*/
-int gfs2_unlink_ok(struct gfs2_inode *dip, struct qstr *name,
+int gfs2_unlink_ok(struct gfs2_inode *dip, const struct qstr *name,
struct gfs2_inode *ip)
{
struct gfs2_inum inum;
unsigned int type;
int error;
- if (IS_IMMUTABLE(ip->i_vnode) || IS_APPEND(ip->i_vnode))
+ if (IS_IMMUTABLE(&ip->i_inode) || IS_APPEND(&ip->i_inode))
return -EPERM;
if ((dip->i_di.di_mode & S_ISVTX) &&
dip->i_di.di_uid != current->fsuid &&
- ip->i_di.di_uid != current->fsuid &&
- !capable(CAP_FOWNER))
+ ip->i_di.di_uid != current->fsuid && !capable(CAP_FOWNER))
return -EPERM;
- if (IS_APPEND(dip->i_vnode))
+ if (IS_APPEND(&dip->i_inode))
return -EPERM;
- error = gfs2_repermission(dip->i_vnode, MAY_WRITE | MAY_EXEC, NULL);
+ error = permission(&dip->i_inode, MAY_WRITE | MAY_EXEC, NULL);
if (error)
return error;
- error = gfs2_dir_search(dip->i_vnode, name, &inum, &type);
+ error = gfs2_dir_search(&dip->i_inode, name, &inum, &type);
if (error)
return error;
int gfs2_ok_to_move(struct gfs2_inode *this, struct gfs2_inode *to)
{
- struct inode *dir = to->i_vnode;
+ struct inode *dir = &to->i_inode;
struct super_block *sb = dir->i_sb;
struct inode *tmp;
struct qstr dotdot;
igrab(dir);
for (;;) {
- if (dir == this->i_vnode) {
+ if (dir == &this->i_inode) {
error = -EINVAL;
break;
}
memcpy(*buf, dibh->b_data + sizeof(struct gfs2_dinode), x);
*len = x;
- out_brelse:
+out_brelse:
brelse(dibh);
-
- out:
+out:
gfs2_glock_dq_uninit(&i_gh);
-
return error;
}
curtime = get_seconds();
if (curtime - ip->i_di.di_atime >= quantum) {
gfs2_glock_dq(gh);
- gfs2_holder_reinit(LM_ST_EXCLUSIVE,
- gh->gh_flags & ~LM_FLAG_ANY,
- gh);
+ gfs2_holder_reinit(LM_ST_EXCLUSIVE, gh->gh_flags & ~LM_FLAG_ANY,
+ gh);
error = gfs2_glock_nq(gh);
if (error)
return error;
return 0;
- fail_end_trans:
+fail_end_trans:
gfs2_trans_end(sdp);
-
- fail:
+fail:
gfs2_glock_dq(gh);
-
return error;
}
return error;
}
-/**
- * gfs2_try_toss_vnode - See if we can toss a vnode from memory
- * @ip: the inode
- *
- * Returns: 1 if the vnode was tossed
- */
-
-void gfs2_try_toss_vnode(struct gfs2_inode *ip)
-{
- struct inode *inode;
-
- inode = gfs2_ip2v_lookup(ip);
- if (!inode)
- return;
-
- d_prune_aliases(inode);
-
- if (S_ISDIR(ip->i_di.di_mode)) {
- struct list_head *head = &inode->i_dentry;
- struct dentry *d = NULL;
-
- spin_lock(&dcache_lock);
- if (list_empty(head))
- spin_unlock(&dcache_lock);
- else {
- d = list_entry(head->next, struct dentry, d_alias);
- dget_locked(d);
- spin_unlock(&dcache_lock);
-
- if (have_submounts(d))
- dput(d);
- else {
- shrink_dcache_parent(d);
- dput(d);
- d_prune_aliases(inode);
- }
- }
- }
-
- inode->i_nlink = 0;
- iput(inode);
-}
-
static int
__gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr)
error = gfs2_meta_inode_buffer(ip, &dibh);
if (!error) {
- error = inode_setattr(ip->i_vnode, attr);
- gfs2_assert_warn(ip->i_sbd, !error);
+ error = inode_setattr(&ip->i_inode, attr);
+ gfs2_assert_warn(GFS2_SB(&ip->i_inode), !error);
gfs2_inode_attr_out(ip);
gfs2_trans_add_bh(ip->i_gl, dibh, 1);
if (current->journal_info)
return __gfs2_setattr_simple(ip, attr);
- error = gfs2_trans_begin(ip->i_sbd, RES_DINODE, 0);
+ error = gfs2_trans_begin(GFS2_SB(&ip->i_inode), RES_DINODE, 0);
if (error)
return error;
error = __gfs2_setattr_simple(ip, attr);
- gfs2_trans_end(ip->i_sbd);
+ gfs2_trans_end(GFS2_SB(&ip->i_inode));
return error;
}
-int gfs2_repermission(struct inode *inode, int mask, struct nameidata *nd)
-{
- return permission(inode, mask, nd);
-}
-
git.openpandora.org / pandora-kernel.git / blobdiff