/*
* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
- * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2004-2007 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
- * of the GNU General Public License v.2.
+ * of the GNU General Public License version 2.
*/
-#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/completion.h>
#include <linux/buffer_head.h>
#include <linux/fs.h>
#include <linux/gfs2_ondisk.h>
+#include <linux/lm_interface.h>
#include "gfs2.h"
-#include "lm_interface.h"
#include "incore.h"
#include "glock.h"
#include "glops.h"
#include "trans.h"
#include "ops_file.h"
#include "util.h"
+#include "log.h"
-#define BFITNOENT 0xFFFFFFFF
+#define BFITNOENT ((u32)~0)
/*
* These routines are used by the resource group routines (rgrp.c)
*/
static void gfs2_setbit(struct gfs2_rgrpd *rgd, unsigned char *buffer,
- unsigned int buflen, uint32_t block,
+ unsigned int buflen, u32 block,
unsigned char new_state)
{
unsigned char *byte, *end, cur_state;
*/
static unsigned char gfs2_testbit(struct gfs2_rgrpd *rgd, unsigned char *buffer,
- unsigned int buflen, uint32_t block)
+ unsigned int buflen, u32 block)
{
unsigned char *byte, *end, cur_state;
unsigned int bit;
* Return: the block number (bitmap buffer scope) that was found
*/
-static uint32_t gfs2_bitfit(struct gfs2_rgrpd *rgd, unsigned char *buffer,
- unsigned int buflen, uint32_t goal,
+static u32 gfs2_bitfit(struct gfs2_rgrpd *rgd, unsigned char *buffer,
+ unsigned int buflen, u32 goal,
unsigned char old_state)
{
unsigned char *byte, *end, alloc;
- uint32_t blk = goal;
+ u32 blk = goal;
unsigned int bit;
byte = buffer + (goal / GFS2_NBBY);
* Returns: The number of bits
*/
-static uint32_t gfs2_bitcount(struct gfs2_rgrpd *rgd, unsigned char *buffer,
+static u32 gfs2_bitcount(struct gfs2_rgrpd *rgd, unsigned char *buffer,
unsigned int buflen, unsigned char state)
{
unsigned char *byte = buffer;
unsigned char state1 = state << 2;
unsigned char state2 = state << 4;
unsigned char state3 = state << 6;
- uint32_t count = 0;
+ u32 count = 0;
for (; byte < end; byte++) {
if (((*byte) & 0x03) == state)
{
struct gfs2_sbd *sdp = rgd->rd_sbd;
struct gfs2_bitmap *bi = NULL;
- uint32_t length = rgd->rd_ri.ri_length;
- uint32_t count[4], tmp;
+ u32 length = rgd->rd_ri.ri_length;
+ u32 count[4], tmp;
int buf, x;
- memset(count, 0, 4 * sizeof(uint32_t));
+ memset(count, 0, 4 * sizeof(u32));
/* Count # blocks in each of 4 possible allocation states */
for (buf = 0; buf < length; buf++) {
}
-static inline int rgrp_contains_block(struct gfs2_rindex *ri, uint64_t block)
+static inline int rgrp_contains_block(struct gfs2_rindex_host *ri, u64 block)
{
- uint64_t first = ri->ri_data0;
- uint64_t last = first + ri->ri_data;
- return !!(first <= block && block < last);
+ u64 first = ri->ri_data0;
+ u64 last = first + ri->ri_data;
+ return first <= block && block < last;
}
/**
* Returns: The resource group, or NULL if not found
*/
-struct gfs2_rgrpd *gfs2_blk2rgrpd(struct gfs2_sbd *sdp, uint64_t blk)
+struct gfs2_rgrpd *gfs2_blk2rgrpd(struct gfs2_sbd *sdp, u64 blk)
{
struct gfs2_rgrpd *rgd;
{
struct gfs2_sbd *sdp = rgd->rd_sbd;
struct gfs2_bitmap *bi;
- uint32_t length = rgd->rd_ri.ri_length; /* # blocks in hdr & bitmap */
- uint32_t bytes_left, bytes;
+ u32 length = rgd->rd_ri.ri_length; /* # blocks in hdr & bitmap */
+ u32 bytes_left, bytes;
int x;
if (!length)
}
/**
- * gfs2_ri_update - Pull in a new resource index from the disk
+ * gfs2_ri_total - Total up the file system space, according to the rindex.
+ *
+ */
+u64 gfs2_ri_total(struct gfs2_sbd *sdp)
+{
+ u64 total_data = 0;
+ struct inode *inode = sdp->sd_rindex;
+ struct gfs2_inode *ip = GFS2_I(inode);
+ struct gfs2_rindex_host ri;
+ char buf[sizeof(struct gfs2_rindex)];
+ struct file_ra_state ra_state;
+ int error, rgrps;
+
+ mutex_lock(&sdp->sd_rindex_mutex);
+ file_ra_state_init(&ra_state, inode->i_mapping);
+ for (rgrps = 0;; rgrps++) {
+ loff_t pos = rgrps * sizeof(struct gfs2_rindex);
+
+ if (pos + sizeof(struct gfs2_rindex) >= ip->i_di.di_size)
+ break;
+ error = gfs2_internal_read(ip, &ra_state, buf, &pos,
+ sizeof(struct gfs2_rindex));
+ if (error != sizeof(struct gfs2_rindex))
+ break;
+ gfs2_rindex_in(&ri, buf);
+ total_data += ri.ri_data;
+ }
+ mutex_unlock(&sdp->sd_rindex_mutex);
+ return total_data;
+}
+
+/**
+ * read_rindex_entry - Pull in a new resource index entry from the disk
* @gl: The glock covering the rindex inode
*
+ * Returns: 0 on success, error code otherwise
+ */
+
+static int read_rindex_entry(struct gfs2_inode *ip,
+ struct file_ra_state *ra_state)
+{
+ struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
+ loff_t pos = sdp->sd_rgrps * sizeof(struct gfs2_rindex);
+ char buf[sizeof(struct gfs2_rindex)];
+ int error;
+ struct gfs2_rgrpd *rgd;
+
+ error = gfs2_internal_read(ip, ra_state, buf, &pos,
+ sizeof(struct gfs2_rindex));
+ if (!error)
+ return 0;
+ if (error != sizeof(struct gfs2_rindex)) {
+ if (error > 0)
+ error = -EIO;
+ return error;
+ }
+
+ rgd = kzalloc(sizeof(struct gfs2_rgrpd), GFP_NOFS);
+ error = -ENOMEM;
+ if (!rgd)
+ return error;
+
+ mutex_init(&rgd->rd_mutex);
+ lops_init_le(&rgd->rd_le, &gfs2_rg_lops);
+ rgd->rd_sbd = sdp;
+
+ list_add_tail(&rgd->rd_list, &sdp->sd_rindex_list);
+ list_add_tail(&rgd->rd_list_mru, &sdp->sd_rindex_mru_list);
+
+ gfs2_rindex_in(&rgd->rd_ri, buf);
+ error = compute_bitstructs(rgd);
+ if (error)
+ return error;
+
+ error = gfs2_glock_get(sdp, rgd->rd_ri.ri_addr,
+ &gfs2_rgrp_glops, CREATE, &rgd->rd_gl);
+ if (error)
+ return error;
+
+ rgd->rd_gl->gl_object = rgd;
+ rgd->rd_rg_vn = rgd->rd_gl->gl_vn - 1;
+ return error;
+}
+
+/**
+ * gfs2_ri_update - Pull in a new resource index from the disk
+ * @ip: pointer to the rindex inode
+ *
* Returns: 0 on successful update, error code otherwise
*/
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct inode *inode = &ip->i_inode;
- struct gfs2_rgrpd *rgd;
- char buf[sizeof(struct gfs2_rindex)];
struct file_ra_state ra_state;
- uint64_t junk = ip->i_di.di_size;
+ u64 junk = ip->i_di.di_size;
int error;
if (do_div(junk, sizeof(struct gfs2_rindex))) {
file_ra_state_init(&ra_state, inode->i_mapping);
for (sdp->sd_rgrps = 0;; sdp->sd_rgrps++) {
- loff_t pos = sdp->sd_rgrps * sizeof(struct gfs2_rindex);
- error = gfs2_internal_read(ip, &ra_state, buf, &pos,
- sizeof(struct gfs2_rindex));
- if (!error)
- break;
- if (error != sizeof(struct gfs2_rindex)) {
- if (error > 0)
- error = -EIO;
- goto fail;
+ error = read_rindex_entry(ip, &ra_state);
+ if (error) {
+ clear_rgrpdi(sdp);
+ return error;
}
+ }
- rgd = kzalloc(sizeof(struct gfs2_rgrpd), GFP_NOFS);
- error = -ENOMEM;
- if (!rgd)
- goto fail;
-
- mutex_init(&rgd->rd_mutex);
- lops_init_le(&rgd->rd_le, &gfs2_rg_lops);
- rgd->rd_sbd = sdp;
-
- list_add_tail(&rgd->rd_list, &sdp->sd_rindex_list);
- list_add_tail(&rgd->rd_list_mru, &sdp->sd_rindex_mru_list);
-
- gfs2_rindex_in(&rgd->rd_ri, buf);
- error = compute_bitstructs(rgd);
- if (error)
- goto fail;
+ sdp->sd_rindex_vn = ip->i_gl->gl_vn;
+ return 0;
+}
- error = gfs2_glock_get(sdp, rgd->rd_ri.ri_addr,
- &gfs2_rgrp_glops, CREATE, &rgd->rd_gl);
- if (error)
- goto fail;
+/**
+ * gfs2_ri_update_special - Pull in a new resource index from the disk
+ *
+ * This is a special version that's safe to call from gfs2_inplace_reserve_i.
+ * In this case we know that we don't have any resource groups in memory yet.
+ *
+ * @ip: pointer to the rindex inode
+ *
+ * Returns: 0 on successful update, error code otherwise
+ */
+static int gfs2_ri_update_special(struct gfs2_inode *ip)
+{
+ struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
+ struct inode *inode = &ip->i_inode;
+ struct file_ra_state ra_state;
+ int error;
- rgd->rd_gl->gl_object = rgd;
- rgd->rd_rg_vn = rgd->rd_gl->gl_vn - 1;
+ file_ra_state_init(&ra_state, inode->i_mapping);
+ for (sdp->sd_rgrps = 0;; sdp->sd_rgrps++) {
+ /* Ignore partials */
+ if ((sdp->sd_rgrps + 1) * sizeof(struct gfs2_rindex) >
+ ip->i_di.di_size)
+ break;
+ error = read_rindex_entry(ip, &ra_state);
+ if (error) {
+ clear_rgrpdi(sdp);
+ return error;
+ }
}
sdp->sd_rindex_vn = ip->i_gl->gl_vn;
return 0;
-
-fail:
- clear_rgrpdi(sdp);
- return error;
}
/**
for (x = 0; x < length; x++) {
bi = rgd->rd_bits + x;
- error = gfs2_meta_read(gl, rgd->rd_ri.ri_addr + x, DIO_START,
- &bi->bi_bh);
+ error = gfs2_meta_read(gl, rgd->rd_ri.ri_addr + x, 0, &bi->bi_bh);
if (error)
goto fail;
}
for (y = length; y--;) {
bi = rgd->rd_bits + y;
- error = gfs2_meta_reread(sdp, bi->bi_bh, DIO_WAIT);
+ error = gfs2_meta_wait(sdp, bi->bi_bh);
if (error)
goto fail;
if (gfs2_metatype_check(sdp, bi->bi_bh, y ? GFS2_METATYPE_RB :
return al;
}
-/**
- * gfs2_alloc_put - throw away the struct gfs2_alloc for an inode
- * @ip: the inode
- *
- */
-
-void gfs2_alloc_put(struct gfs2_inode *ip)
-{
- return;
-}
-
/**
* try_rgrp_fit - See if a given reservation will fit in a given RG
* @rgd: the RG data
* @al: the struct gfs2_alloc structure describing the reservation
*
* If there's room for the requested blocks to be allocated from the RG:
- * Sets the $al_reserved_data field in @al.
- * Sets the $al_reserved_meta field in @al.
* Sets the $al_rgd field in @al.
*
* Returns: 1 on success (it fits), 0 on failure (it doesn't fit)
struct gfs2_sbd *sdp = rgd->rd_sbd;
int ret = 0;
+ if (rgd->rd_rg.rg_flags & GFS2_RGF_NOALLOC)
+ return 0;
+
spin_lock(&sdp->sd_rindex_spin);
if (rgd->rd_free_clone >= al->al_requested) {
al->al_rgd = rgd;
*/
static struct gfs2_rgrpd *recent_rgrp_first(struct gfs2_sbd *sdp,
- uint64_t rglast)
+ u64 rglast)
{
struct gfs2_rgrpd *rgd = NULL;
rgd = recent_rgrp_first(sdp, ip->i_last_rg_alloc);
while (rgd) {
- error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE,
+ error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE,
LM_FLAG_TRY, &al->al_rgd_gh);
switch (error) {
case 0:
rgd = gfs2_rgrpd_get_first(sdp);
if (rgd == begin) {
- if (++loops >= 2 || !skipped)
+ if (++loops >= 3)
return -ENOSPC;
+ if (!skipped)
+ loops++;
flags = 0;
+ if (loops == 2)
+ gfs2_log_flush(sdp, NULL);
}
}
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct gfs2_alloc *al = &ip->i_alloc;
- int error;
+ int error = 0;
if (gfs2_assert_warn(sdp, al->al_requested))
return -EINVAL;
- error = gfs2_rindex_hold(sdp, &al->al_ri_gh);
+ /* We need to hold the rindex unless the inode we're using is
+ the rindex itself, in which case it's already held. */
+ if (ip != GFS2_I(sdp->sd_rindex))
+ error = gfs2_rindex_hold(sdp, &al->al_ri_gh);
+ else if (!sdp->sd_rgrps) /* We may not have the rindex read in, so: */
+ error = gfs2_ri_update_special(ip);
+
if (error)
return error;
error = get_local_rgrp(ip);
if (error) {
- gfs2_glock_dq_uninit(&al->al_ri_gh);
+ if (ip != GFS2_I(sdp->sd_rindex))
+ gfs2_glock_dq_uninit(&al->al_ri_gh);
return error;
}
al->al_rgd = NULL;
gfs2_glock_dq_uninit(&al->al_rgd_gh);
- gfs2_glock_dq_uninit(&al->al_ri_gh);
+ if (ip != GFS2_I(sdp->sd_rindex))
+ gfs2_glock_dq_uninit(&al->al_ri_gh);
}
/**
* Returns: The block type (GFS2_BLKST_*)
*/
-unsigned char gfs2_get_block_type(struct gfs2_rgrpd *rgd, uint64_t block)
+unsigned char gfs2_get_block_type(struct gfs2_rgrpd *rgd, u64 block)
{
struct gfs2_bitmap *bi = NULL;
- uint32_t length, rgrp_block, buf_block;
+ u32 length, rgrp_block, buf_block;
unsigned int buf;
unsigned char type;
* Returns: the block number allocated
*/
-static uint32_t rgblk_search(struct gfs2_rgrpd *rgd, uint32_t goal,
+static u32 rgblk_search(struct gfs2_rgrpd *rgd, u32 goal,
unsigned char old_state, unsigned char new_state)
{
struct gfs2_bitmap *bi = NULL;
- uint32_t length = rgd->rd_ri.ri_length;
- uint32_t blk = 0;
+ u32 length = rgd->rd_ri.ri_length;
+ u32 blk = 0;
unsigned int buf, x;
/* Find bitmap block that contains bits for goal block */
* Returns: Resource group containing the block(s)
*/
-static struct gfs2_rgrpd *rgblk_free(struct gfs2_sbd *sdp, uint64_t bstart,
- uint32_t blen, unsigned char new_state)
+static struct gfs2_rgrpd *rgblk_free(struct gfs2_sbd *sdp, u64 bstart,
+ u32 blen, unsigned char new_state)
{
struct gfs2_rgrpd *rgd;
struct gfs2_bitmap *bi = NULL;
- uint32_t length, rgrp_blk, buf_blk;
+ u32 length, rgrp_blk, buf_blk;
unsigned int buf;
rgd = gfs2_blk2rgrpd(sdp, bstart);
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct gfs2_alloc *al = &ip->i_alloc;
struct gfs2_rgrpd *rgd = al->al_rgd;
- uint32_t goal, blk;
- uint64_t block;
+ u32 goal, blk;
+ u64 block;
if (rgrp_contains_block(&rgd->rd_ri, ip->i_di.di_goal_data))
goal = ip->i_di.di_goal_data - rgd->rd_ri.ri_data0;
al->al_alloced++;
gfs2_statfs_change(sdp, 0, -1, 0);
- gfs2_quota_change(ip, +1, ip->i_di.di_uid, ip->i_di.di_gid);
+ gfs2_quota_change(ip, +1, ip->i_inode.i_uid, ip->i_inode.i_gid);
spin_lock(&sdp->sd_rindex_spin);
rgd->rd_free_clone--;
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct gfs2_alloc *al = &ip->i_alloc;
struct gfs2_rgrpd *rgd = al->al_rgd;
- uint32_t goal, blk;
- uint64_t block;
+ u32 goal, blk;
+ u64 block;
if (rgrp_contains_block(&rgd->rd_ri, ip->i_di.di_goal_meta))
goal = ip->i_di.di_goal_meta - rgd->rd_ri.ri_data0;
al->al_alloced++;
gfs2_statfs_change(sdp, 0, -1, 0);
- gfs2_quota_change(ip, +1, ip->i_di.di_uid, ip->i_di.di_gid);
+ gfs2_quota_change(ip, +1, ip->i_inode.i_uid, ip->i_inode.i_gid);
gfs2_trans_add_unrevoke(sdp, block);
spin_lock(&sdp->sd_rindex_spin);
*
*/
-void gfs2_free_data(struct gfs2_inode *ip, uint64_t bstart, uint32_t blen)
+void gfs2_free_data(struct gfs2_inode *ip, u64 bstart, u32 blen)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct gfs2_rgrpd *rgd;
gfs2_trans_add_rg(rgd);
gfs2_statfs_change(sdp, 0, +blen, 0);
- gfs2_quota_change(ip, -(int64_t)blen,
- ip->i_di.di_uid, ip->i_di.di_gid);
+ gfs2_quota_change(ip, -(s64)blen, ip->i_inode.i_uid, ip->i_inode.i_gid);
}
/**
*
*/
-void gfs2_free_meta(struct gfs2_inode *ip, uint64_t bstart, uint32_t blen)
+void gfs2_free_meta(struct gfs2_inode *ip, u64 bstart, u32 blen)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct gfs2_rgrpd *rgd;
gfs2_trans_add_rg(rgd);
gfs2_statfs_change(sdp, 0, +blen, 0);
- gfs2_quota_change(ip, -(int64_t)blen, ip->i_di.di_uid, ip->i_di.di_gid);
+ gfs2_quota_change(ip, -(s64)blen, ip->i_inode.i_uid, ip->i_inode.i_gid);
gfs2_meta_wipe(ip, bstart, blen);
}
gfs2_trans_add_rg(rgd);
}
-static void gfs2_free_uninit_di(struct gfs2_rgrpd *rgd, uint64_t blkno)
+static void gfs2_free_uninit_di(struct gfs2_rgrpd *rgd, u64 blkno)
{
struct gfs2_sbd *sdp = rgd->rd_sbd;
struct gfs2_rgrpd *tmp_rgd;
void gfs2_free_di(struct gfs2_rgrpd *rgd, struct gfs2_inode *ip)
{
gfs2_free_uninit_di(rgd, ip->i_num.no_addr);
- gfs2_quota_change(ip, -1, ip->i_di.di_uid, ip->i_di.di_gid);
+ gfs2_quota_change(ip, -1, ip->i_inode.i_uid, ip->i_inode.i_gid);
gfs2_meta_wipe(ip, ip->i_num.no_addr, 1);
}
*/
void gfs2_rlist_add(struct gfs2_sbd *sdp, struct gfs2_rgrp_list *rlist,
- uint64_t block)
+ u64 block)
{
struct gfs2_rgrpd *rgd;
struct gfs2_rgrpd **tmp;
projects / linux-2.6-omap-h63xx.git / blobdiff