ecos: packages/fs/jffs2/current/src/build.c annotate

annotate packages/fs/jffs2/current/src/build.c @ 1881:9558d3d305bf

Merge from public MTD repository

author	asl
date	Sat, 22 Jan 2005 17:14:48 +0000
parents	121da35df27b
children	5bcbb50b501e

rev	line source
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	1 /*
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	2 * JFFS2 -- Journalling Flash File System, Version 2.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	3 *
1372 121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	4 * Copyright (C) 2001-2003 Red Hat, Inc.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	5 *
1881 9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	6 * Created by David Woodhouse <dwmw2@infradead.org>
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	7 *
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	8 * For licensing information, see the file 'LICENCE' in this directory.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	9 *
1881 9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	10 * $Id: build.c,v 1.69 2004/12/16 20:22:18 dmarlin Exp $
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	11 *
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	12 */
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	13
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	14 #include <linux/kernel.h>
570 a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	15 #include <linux/sched.h>
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	16 #include <linux/slab.h>
1881 9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	17 #include <linux/vmalloc.h>
9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	18 #include <linux/mtd/mtd.h>
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	19 #include "nodelist.h"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	20
1372 121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	21 static void jffs2_build_remove_unlinked_inode(struct jffs2_sb_info , struct jffs2_inode_cache , struct jffs2_full_dirent **);
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	22
1118 18f99a0f0059 Merge with latest CVS from infradead.org gthomas parents: 570 diff changeset	23 static inline struct jffs2_inode_cache *
18f99a0f0059 Merge with latest CVS from infradead.org gthomas parents: 570 diff changeset	24 first_inode_chain(int i, struct jffs2_sb_info c)
18f99a0f0059 Merge with latest CVS from infradead.org gthomas parents: 570 diff changeset	25 {
18f99a0f0059 Merge with latest CVS from infradead.org gthomas parents: 570 diff changeset	26 for (; i < INOCACHE_HASHSIZE; (i)++) {
18f99a0f0059 Merge with latest CVS from infradead.org gthomas parents: 570 diff changeset	27 if (c->inocache_list[*i])
18f99a0f0059 Merge with latest CVS from infradead.org gthomas parents: 570 diff changeset	28 return c->inocache_list[*i];
18f99a0f0059 Merge with latest CVS from infradead.org gthomas parents: 570 diff changeset	29 }
18f99a0f0059 Merge with latest CVS from infradead.org gthomas parents: 570 diff changeset	30 return NULL;
18f99a0f0059 Merge with latest CVS from infradead.org gthomas parents: 570 diff changeset	31 }
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	32
1118 18f99a0f0059 Merge with latest CVS from infradead.org gthomas parents: 570 diff changeset	33 static inline struct jffs2_inode_cache *
18f99a0f0059 Merge with latest CVS from infradead.org gthomas parents: 570 diff changeset	34 next_inode(int i, struct jffs2_inode_cache ic, struct jffs2_sb_info *c)
18f99a0f0059 Merge with latest CVS from infradead.org gthomas parents: 570 diff changeset	35 {
18f99a0f0059 Merge with latest CVS from infradead.org gthomas parents: 570 diff changeset	36 /* More in this chain? */
18f99a0f0059 Merge with latest CVS from infradead.org gthomas parents: 570 diff changeset	37 if (ic->next)
18f99a0f0059 Merge with latest CVS from infradead.org gthomas parents: 570 diff changeset	38 return ic->next;
18f99a0f0059 Merge with latest CVS from infradead.org gthomas parents: 570 diff changeset	39 (*i)++;
18f99a0f0059 Merge with latest CVS from infradead.org gthomas parents: 570 diff changeset	40 return first_inode_chain(i, c);
18f99a0f0059 Merge with latest CVS from infradead.org gthomas parents: 570 diff changeset	41 }
18f99a0f0059 Merge with latest CVS from infradead.org gthomas parents: 570 diff changeset	42
18f99a0f0059 Merge with latest CVS from infradead.org gthomas parents: 570 diff changeset	43 #define for_each_inode(i, c, ic) \
18f99a0f0059 Merge with latest CVS from infradead.org gthomas parents: 570 diff changeset	44 for (i = 0, ic = first_inode_chain(&i, (c)); \
18f99a0f0059 Merge with latest CVS from infradead.org gthomas parents: 570 diff changeset	45 ic; \
18f99a0f0059 Merge with latest CVS from infradead.org gthomas parents: 570 diff changeset	46 ic = next_inode(&i, ic, (c)))
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	47
1372 121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	48
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	49 static inline void jffs2_build_inode_pass1(struct jffs2_sb_info c, struct jffs2_inode_cache ic)
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	50 {
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	51 struct jffs2_full_dirent *fd;
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	52
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	53 D1(printk(KERN_DEBUG "jffs2_build_inode building directory inode #%u\n", ic->ino));
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	54
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	55 /* For each child, increase nlink */
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	56 for(fd = ic->scan_dents; fd; fd = fd->next) {
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	57 struct jffs2_inode_cache *child_ic;
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	58 if (!fd->ino)
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	59 continue;
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	60
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	61 /* XXX: Can get high latency here with huge directories */
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	62
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	63 child_ic = jffs2_get_ino_cache(c, fd->ino);
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	64 if (!child_ic) {
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	65 printk(KERN_NOTICE "Eep. Child \"%s\" (ino #%u) of dir ino #%u doesn't exist!\n",
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	66 fd->name, fd->ino, ic->ino);
1881 9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	67 jffs2_mark_node_obsolete(c, fd->raw);
1372 121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	68 continue;
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	69 }
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	70
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	71 if (child_ic->nlink++ && fd->type == DT_DIR) {
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	72 printk(KERN_NOTICE "Child dir \"%s\" (ino #%u) of dir ino #%u appears to be a hard link\n", fd->name, fd->ino, ic->ino);
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	73 if (fd->ino == 1 && ic->ino == 1) {
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	74 printk(KERN_NOTICE "This is mostly harmless, and probably caused by creating a JFFS2 image\n");
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	75 printk(KERN_NOTICE "using a buggy version of mkfs.jffs2. Use at least v1.17.\n");
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	76 }
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	77 /* What do we do about it? */
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	78 }
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	79 D1(printk(KERN_DEBUG "Increased nlink for child \"%s\" (ino #%u)\n", fd->name, fd->ino));
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	80 /* Can't free them. We might need them in pass 2 */
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	81 }
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	82 }
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	83
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	84 /* Scan plan:
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	85 - Scan physical nodes. Build map of inodes/dirents. Allocate inocaches as we go
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	86 - Scan directory tree from top down, setting nlink in inocaches
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	87 - Scan inocaches for inodes with nlink==0
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	88 */
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	89 static int jffs2_build_filesystem(struct jffs2_sb_info *c)
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	90 {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	91 int ret;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	92 int i;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	93 struct jffs2_inode_cache *ic;
1881 9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	94 struct jffs2_full_dirent *fd;
1372 121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	95 struct jffs2_full_dirent *dead_fds = NULL;
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	96
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	97 /* First, scan the medium and build all the inode caches with
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	98 lists of physical nodes */
570 a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	99
a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	100 c->flags \|= JFFS2_SB_FLAG_MOUNTING;
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	101 ret = jffs2_scan_medium(c);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	102 if (ret)
1881 9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	103 goto exit;
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	104
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	105 D1(printk(KERN_DEBUG "Scanned flash completely\n"));
1881 9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	106 D2(jffs2_dump_block_lists(c));
570 a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	107
a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	108 /* Now scan the directory tree, increasing nlink according to every dirent found. */
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	109 for_each_inode(i, c, ic) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	110 D1(printk(KERN_DEBUG "Pass 1: ino #%u\n", ic->ino));
1372 121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	111
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	112 D1(BUG_ON(ic->ino > c->highest_ino));
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	113
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	114 if (ic->scan_dents) {
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	115 jffs2_build_inode_pass1(c, ic);
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	116 cond_resched();
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	117 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	118 }
1881 9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	119 c->flags &= ~JFFS2_SB_FLAG_MOUNTING;
9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	120
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	121 D1(printk(KERN_DEBUG "Pass 1 complete\n"));
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	122
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	123 /* Next, scan for inodes with nlink == 0 and remove them. If
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	124 they were directories, then decrement the nlink of their
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	125 children too, and repeat the scan. As that's going to be
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	126 a fairly uncommon occurrence, it's not so evil to do it this
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	127 way. Recursion bad. */
1372 121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	128 D1(printk(KERN_DEBUG "Pass 2 starting\n"));
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	129
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	130 for_each_inode(i, c, ic) {
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	131 D1(printk(KERN_DEBUG "Pass 2: ino #%u, nlink %d, ic %p, nodes %p\n", ic->ino, ic->nlink, ic, ic->nodes));
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	132 if (ic->nlink)
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	133 continue;
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	134
1372 121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	135 jffs2_build_remove_unlinked_inode(c, ic, &dead_fds);
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	136 cond_resched();
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	137 }
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	138
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	139 D1(printk(KERN_DEBUG "Pass 2a starting\n"));
570 a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	140
1372 121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	141 while (dead_fds) {
1881 9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	142 fd = dead_fds;
1372 121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	143 dead_fds = fd->next;
570 a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	144
1372 121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	145 ic = jffs2_get_ino_cache(c, fd->ino);
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	146 D1(printk(KERN_DEBUG "Removing dead_fd ino #%u (\"%s\"), ic at %p\n", fd->ino, fd->name, ic));
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	147
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	148 if (ic)
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	149 jffs2_build_remove_unlinked_inode(c, ic, &dead_fds);
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	150 jffs2_free_full_dirent(fd);
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	151 }
570 a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	152
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	153 D1(printk(KERN_DEBUG "Pass 2 complete\n"));
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	154
1372 121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	155 /* Finally, we can scan again and free the dirent structs */
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	156 for_each_inode(i, c, ic) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	157 D1(printk(KERN_DEBUG "Pass 3: ino #%u, ic %p, nodes %p\n", ic->ino, ic, ic->nodes));
570 a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	158
a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	159 while(ic->scan_dents) {
a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	160 fd = ic->scan_dents;
a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	161 ic->scan_dents = fd->next;
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	162 jffs2_free_full_dirent(fd);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	163 }
570 a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	164 ic->scan_dents = NULL;
a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	165 cond_resched();
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	166 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	167 D1(printk(KERN_DEBUG "Pass 3 complete\n"));
1881 9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	168 D2(jffs2_dump_block_lists(c));
570 a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	169
a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	170 /* Rotate the lists by some number to ensure wear levelling */
a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	171 jffs2_rotate_lists(c);
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	172
1881 9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	173 ret = 0;
9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	174
9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	175 exit:
9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	176 if (ret) {
9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	177 for_each_inode(i, c, ic) {
9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	178 while(ic->scan_dents) {
9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	179 fd = ic->scan_dents;
9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	180 ic->scan_dents = fd->next;
9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	181 jffs2_free_full_dirent(fd);
9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	182 }
9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	183 }
9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	184 }
9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	185
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	186 return ret;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	187 }
570 a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	188
1372 121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	189 static void jffs2_build_remove_unlinked_inode(struct jffs2_sb_info c, struct jffs2_inode_cache ic, struct jffs2_full_dirent **dead_fds)
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	190 {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	191 struct jffs2_raw_node_ref *raw;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	192 struct jffs2_full_dirent *fd;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	193
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	194 D1(printk(KERN_DEBUG "JFFS2: Removing ino #%u with nlink == zero.\n", ic->ino));
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	195
1881 9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	196 raw = ic->nodes;
9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	197 while (raw != (void *)ic) {
9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	198 struct jffs2_raw_node_ref *next = raw->next_in_ino;
570 a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	199 D1(printk(KERN_DEBUG "obsoleting node at 0x%08x\n", ref_offset(raw)));
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	200 jffs2_mark_node_obsolete(c, raw);
1881 9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	201 raw = next;
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	202 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	203
570 a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	204 if (ic->scan_dents) {
a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	205 int whinged = 0;
a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	206 D1(printk(KERN_DEBUG "Inode #%u was a directory which may have children...\n", ic->ino));
a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	207
a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	208 while(ic->scan_dents) {
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	209 struct jffs2_inode_cache *child_ic;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	210
570 a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	211 fd = ic->scan_dents;
a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	212 ic->scan_dents = fd->next;
a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	213
a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	214 if (!fd->ino) {
a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	215 /* It's a deletion dirent. Ignore it */
a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	216 D1(printk(KERN_DEBUG "Child \"%s\" is a deletion dirent, skipping...\n", fd->name));
a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	217 jffs2_free_full_dirent(fd);
a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	218 continue;
a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	219 }
a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	220 if (!whinged) {
a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	221 whinged = 1;
a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	222 printk(KERN_NOTICE "Inode #%u was a directory with children - removing those too...\n", ic->ino);
a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	223 }
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	224
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	225 D1(printk(KERN_DEBUG "Removing child \"%s\", ino #%u\n",
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	226 fd->name, fd->ino));
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	227
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	228 child_ic = jffs2_get_ino_cache(c, fd->ino);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	229 if (!child_ic) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	230 printk(KERN_NOTICE "Cannot remove child \"%s\", ino #%u, because it doesn't exist\n", fd->name, fd->ino);
570 a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	231 jffs2_free_full_dirent(fd);
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	232 continue;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	233 }
1372 121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	234
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	235 /* Reduce nlink of the child. If it's now zero, stick it on the
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	236 dead_fds list to be cleaned up later. Else just free the fd */
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	237
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	238 child_ic->nlink--;
1372 121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	239
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	240 if (!child_ic->nlink) {
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	241 D1(printk(KERN_DEBUG "Inode #%u (\"%s\") has now got zero nlink. Adding to dead_fds list.\n",
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	242 fd->ino, fd->name));
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	243 fd->next = *dead_fds;
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	244 *dead_fds = fd;
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	245 } else {
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	246 D1(printk(KERN_DEBUG "Inode #%u (\"%s\") has now got nlink %d. Ignoring.\n",
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	247 fd->ino, fd->name, child_ic->nlink));
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	248 jffs2_free_full_dirent(fd);
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	249 }
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	250 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	251 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	252
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	253 /*
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	254 We don't delete the inocache from the hash list and free it yet.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	255 The erase code will do that, when all the nodes are completely gone.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	256 */
1372 121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	257 }
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	258
1372 121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	259 static void jffs2_calc_trigger_levels(struct jffs2_sb_info *c)
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	260 {
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	261 uint32_t size;
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	262
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	263 /* Deletion should almost _always_ be allowed. We're fairly
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	264 buggered once we stop allowing people to delete stuff
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	265 because there's not enough free space... */
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	266 c->resv_blocks_deletion = 2;
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	267
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	268 /* Be conservative about how much space we need before we allow writes.
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	269 On top of that which is required for deletia, require an extra 2%
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	270 of the medium to be available, for overhead caused by nodes being
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	271 split across blocks, etc. */
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	272
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	273 size = c->flash_size / 50; /* 2% of flash size */
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	274 size += c->nr_blocks * 100; /* And 100 bytes per eraseblock */
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	275 size += c->sector_size - 1; /* ... and round up */
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	276
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	277 c->resv_blocks_write = c->resv_blocks_deletion + (size / c->sector_size);
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	278
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	279 /* When do we let the GC thread run in the background */
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	280
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	281 c->resv_blocks_gctrigger = c->resv_blocks_write + 1;
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	282
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	283 /* When do we allow garbage collection to merge nodes to make
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	284 long-term progress at the expense of short-term space exhaustion? */
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	285 c->resv_blocks_gcmerge = c->resv_blocks_deletion + 1;
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	286
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	287 /* When do we allow garbage collection to eat from bad blocks rather
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	288 than actually making progress? */
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	289 c->resv_blocks_gcbad = 0;//c->resv_blocks_deletion + 2;
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	290
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	291 /* If there's less than this amount of dirty space, don't bother
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	292 trying to GC to make more space. It'll be a fruitless task */
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	293 c->nospc_dirty_size = c->sector_size + (c->flash_size / 100);
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	294
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	295 D1(printk(KERN_DEBUG "JFFS2 trigger levels (size %d KiB, block size %d KiB, %d blocks)\n",
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	296 c->flash_size / 1024, c->sector_size / 1024, c->nr_blocks));
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	297 D1(printk(KERN_DEBUG "Blocks required to allow deletion: %d (%d KiB)\n",
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	298 c->resv_blocks_deletion, c->resv_blocks_deletion*c->sector_size/1024));
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	299 D1(printk(KERN_DEBUG "Blocks required to allow writes: %d (%d KiB)\n",
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	300 c->resv_blocks_write, c->resv_blocks_write*c->sector_size/1024));
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	301 D1(printk(KERN_DEBUG "Blocks required to quiesce GC thread: %d (%d KiB)\n",
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	302 c->resv_blocks_gctrigger, c->resv_blocks_gctrigger*c->sector_size/1024));
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	303 D1(printk(KERN_DEBUG "Blocks required to allow GC merges: %d (%d KiB)\n",
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	304 c->resv_blocks_gcmerge, c->resv_blocks_gcmerge*c->sector_size/1024));
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	305 D1(printk(KERN_DEBUG "Blocks required to GC bad blocks: %d (%d KiB)\n",
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	306 c->resv_blocks_gcbad, c->resv_blocks_gcbad*c->sector_size/1024));
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	307 D1(printk(KERN_DEBUG "Amount of dirty space required to GC: %d bytes\n",
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	308 c->nospc_dirty_size));
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	309 }
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	310
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	311 int jffs2_do_mount_fs(struct jffs2_sb_info *c)
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	312 {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	313 int i;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	314
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	315 c->free_size = c->flash_size;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	316 c->nr_blocks = c->flash_size / c->sector_size;
1881 9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	317 #ifndef __ECOS
9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	318 if (c->mtd->flags & MTD_NO_VIRTBLOCKS)
9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	319 c->blocks = vmalloc(sizeof(struct jffs2_eraseblock) * c->nr_blocks);
9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	320 else
9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	321 #endif
9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	322 c->blocks = kmalloc(sizeof(struct jffs2_eraseblock) * c->nr_blocks, GFP_KERNEL);
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	323 if (!c->blocks)
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	324 return -ENOMEM;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	325 for (i=0; i<c->nr_blocks; i++) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	326 INIT_LIST_HEAD(&c->blocks[i].list);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	327 c->blocks[i].offset = i * c->sector_size;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	328 c->blocks[i].free_size = c->sector_size;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	329 c->blocks[i].dirty_size = 0;
570 a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	330 c->blocks[i].wasted_size = 0;
a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	331 c->blocks[i].unchecked_size = 0;
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	332 c->blocks[i].used_size = 0;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	333 c->blocks[i].first_node = NULL;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	334 c->blocks[i].last_node = NULL;
1881 9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	335 c->blocks[i].bad_count = 0;
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	336 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	337
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	338 init_MUTEX(&c->alloc_sem);
570 a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	339 init_MUTEX(&c->erase_free_sem);
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	340 init_waitqueue_head(&c->erase_wait);
570 a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	341 init_waitqueue_head(&c->inocache_wq);
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	342 spin_lock_init(&c->erase_completion_lock);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	343 spin_lock_init(&c->inocache_lock);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	344
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	345 INIT_LIST_HEAD(&c->clean_list);
570 a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	346 INIT_LIST_HEAD(&c->very_dirty_list);
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	347 INIT_LIST_HEAD(&c->dirty_list);
570 a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	348 INIT_LIST_HEAD(&c->erasable_list);
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	349 INIT_LIST_HEAD(&c->erasing_list);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	350 INIT_LIST_HEAD(&c->erase_pending_list);
570 a7947d436e85 Update to latest public JFFS2 sources gthomas parents: 208 diff changeset	351 INIT_LIST_HEAD(&c->erasable_pending_wbuf_list);
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	352 INIT_LIST_HEAD(&c->erase_complete_list);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	353 INIT_LIST_HEAD(&c->free_list);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	354 INIT_LIST_HEAD(&c->bad_list);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	355 INIT_LIST_HEAD(&c->bad_used_list);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	356 c->highest_ino = 1;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	357
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	358 if (jffs2_build_filesystem(c)) {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	359 D1(printk(KERN_DEBUG "build_fs failed\n"));
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	360 jffs2_free_ino_caches(c);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	361 jffs2_free_raw_node_refs(c);
1881 9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	362 #ifndef __ECOS
9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	363 if (c->mtd->flags & MTD_NO_VIRTBLOCKS)
9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	364 vfree(c->blocks);
9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	365 else
9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	366 #endif
9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	367 kfree(c->blocks);
9558d3d305bf Merge from public MTD repository asl parents: 1834 diff changeset	368
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	369 return -EIO;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	370 }
1372 121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	371
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	372 jffs2_calc_trigger_levels(c);
121121d3d18f Merge changes from David Woodhouse (bring up to date with MTD project) gthomas parents: 1118 diff changeset	373
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	374 return 0;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: diff changeset	375 }

Mercurial > ecos

annotate packages/fs/jffs2/current/src/build.c @ 1881:9558d3d305bf