summaryrefslogtreecommitdiff
path: root/fs/jffs2
diff options
context:
space:
mode:
Diffstat (limited to 'fs/jffs2')
-rw-r--r--fs/jffs2/Makefile5
-rw-r--r--fs/jffs2/README.Locking6
-rw-r--r--fs/jffs2/background.c13
-rw-r--r--fs/jffs2/build.c9
-rw-r--r--fs/jffs2/compr_zlib.c4
-rw-r--r--fs/jffs2/dir.c46
-rw-r--r--fs/jffs2/erase.c24
-rw-r--r--fs/jffs2/file.c5
-rw-r--r--fs/jffs2/fs.c24
-rw-r--r--fs/jffs2/gc.c41
-rw-r--r--fs/jffs2/nodelist.c93
-rw-r--r--fs/jffs2/nodelist.h21
-rw-r--r--fs/jffs2/nodemgmt.c31
-rw-r--r--fs/jffs2/os-linux.h60
-rw-r--r--fs/jffs2/read.c32
-rw-r--r--fs/jffs2/readinode.c96
-rw-r--r--fs/jffs2/scan.c39
-rw-r--r--fs/jffs2/super.c8
-rw-r--r--fs/jffs2/symlink.c42
-rw-r--r--fs/jffs2/wbuf.c164
-rw-r--r--fs/jffs2/write.c55
21 files changed, 524 insertions, 294 deletions
diff --git a/fs/jffs2/Makefile b/fs/jffs2/Makefile
index e3c38ccf9c7..f1afe681ecd 100644
--- a/fs/jffs2/Makefile
+++ b/fs/jffs2/Makefile
@@ -1,7 +1,7 @@
#
# Makefile for the Linux Journalling Flash File System v2 (JFFS2)
#
-# $Id: Makefile.common,v 1.7 2004/11/03 12:57:38 jwboyer Exp $
+# $Id: Makefile.common,v 1.9 2005/02/09 09:23:53 pavlov Exp $
#
obj-$(CONFIG_JFFS2_FS) += jffs2.o
@@ -11,8 +11,7 @@ jffs2-y += read.o nodemgmt.o readinode.o write.o scan.o gc.o
jffs2-y += symlink.o build.o erase.o background.o fs.o writev.o
jffs2-y += super.o
-jffs2-$(CONFIG_JFFS2_FS_NAND) += wbuf.o
-jffs2-$(CONFIG_JFFS2_FS_NOR_ECC) += wbuf.o
+jffs2-$(CONFIG_JFFS2_FS_WRITEBUFFER) += wbuf.o
jffs2-$(CONFIG_JFFS2_RUBIN) += compr_rubin.o
jffs2-$(CONFIG_JFFS2_RTIME) += compr_rtime.o
jffs2-$(CONFIG_JFFS2_ZLIB) += compr_zlib.o
diff --git a/fs/jffs2/README.Locking b/fs/jffs2/README.Locking
index 49771cf8513..b7943439b6e 100644
--- a/fs/jffs2/README.Locking
+++ b/fs/jffs2/README.Locking
@@ -1,4 +1,4 @@
- $Id: README.Locking,v 1.9 2004/11/20 10:35:40 dwmw2 Exp $
+ $Id: README.Locking,v 1.12 2005/04/13 13:22:35 dwmw2 Exp $
JFFS2 LOCKING DOCUMENTATION
---------------------------
@@ -108,6 +108,10 @@ in-core jffs2_inode_cache objects (each inode in JFFS2 has the
correspondent jffs2_inode_cache object). So, the inocache_lock
has to be locked while walking the c->inocache_list hash buckets.
+This spinlock also covers allocation of new inode numbers, which is
+currently just '++->highest_ino++', but might one day get more complicated
+if we need to deal with wrapping after 4 milliard inode numbers are used.
+
Note, the f->sem guarantees that the correspondent jffs2_inode_cache
will not be removed. So, it is allowed to access it without locking
the inocache_lock spinlock.
diff --git a/fs/jffs2/background.c b/fs/jffs2/background.c
index 638836b277d..0f224384f17 100644
--- a/fs/jffs2/background.c
+++ b/fs/jffs2/background.c
@@ -7,7 +7,7 @@
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: background.c,v 1.50 2004/11/16 20:36:10 dwmw2 Exp $
+ * $Id: background.c,v 1.54 2005/05/20 21:37:12 gleixner Exp $
*
*/
@@ -37,7 +37,7 @@ int jffs2_start_garbage_collect_thread(struct jffs2_sb_info *c)
if (c->gc_task)
BUG();
- init_MUTEX_LOCKED(&c->gc_thread_start);
+ init_completion(&c->gc_thread_start);
init_completion(&c->gc_thread_exit);
pid = kernel_thread(jffs2_garbage_collect_thread, c, CLONE_FS|CLONE_FILES);
@@ -48,7 +48,7 @@ int jffs2_start_garbage_collect_thread(struct jffs2_sb_info *c)
} else {
/* Wait for it... */
D1(printk(KERN_DEBUG "JFFS2: Garbage collect thread is pid %d\n", pid));
- down(&c->gc_thread_start);
+ wait_for_completion(&c->gc_thread_start);
}
return ret;
@@ -56,13 +56,16 @@ int jffs2_start_garbage_collect_thread(struct jffs2_sb_info *c)
void jffs2_stop_garbage_collect_thread(struct jffs2_sb_info *c)
{
+ int wait = 0;
spin_lock(&c->erase_completion_lock);
if (c->gc_task) {
D1(printk(KERN_DEBUG "jffs2: Killing GC task %d\n", c->gc_task->pid));
send_sig(SIGKILL, c->gc_task, 1);
+ wait = 1;
}
spin_unlock(&c->erase_completion_lock);
- wait_for_completion(&c->gc_thread_exit);
+ if (wait)
+ wait_for_completion(&c->gc_thread_exit);
}
static int jffs2_garbage_collect_thread(void *_c)
@@ -75,7 +78,7 @@ static int jffs2_garbage_collect_thread(void *_c)
allow_signal(SIGCONT);
c->gc_task = current;
- up(&c->gc_thread_start);
+ complete(&c->gc_thread_start);
set_user_nice(current, 10);
diff --git a/fs/jffs2/build.c b/fs/jffs2/build.c
index a01dd5fdbb9..3dd5394921c 100644
--- a/fs/jffs2/build.c
+++ b/fs/jffs2/build.c
@@ -7,7 +7,7 @@
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: build.c,v 1.69 2004/12/16 20:22:18 dmarlin Exp $
+ * $Id: build.c,v 1.70 2005/02/28 08:21:05 dedekind Exp $
*
*/
@@ -97,14 +97,16 @@ static int jffs2_build_filesystem(struct jffs2_sb_info *c)
/* First, scan the medium and build all the inode caches with
lists of physical nodes */
- c->flags |= JFFS2_SB_FLAG_MOUNTING;
+ c->flags |= JFFS2_SB_FLAG_SCANNING;
ret = jffs2_scan_medium(c);
+ c->flags &= ~JFFS2_SB_FLAG_SCANNING;
if (ret)
goto exit;
D1(printk(KERN_DEBUG "Scanned flash completely\n"));
D2(jffs2_dump_block_lists(c));
+ c->flags |= JFFS2_SB_FLAG_BUILDING;
/* Now scan the directory tree, increasing nlink according to every dirent found. */
for_each_inode(i, c, ic) {
D1(printk(KERN_DEBUG "Pass 1: ino #%u\n", ic->ino));
@@ -116,7 +118,6 @@ static int jffs2_build_filesystem(struct jffs2_sb_info *c)
cond_resched();
}
}
- c->flags &= ~JFFS2_SB_FLAG_MOUNTING;
D1(printk(KERN_DEBUG "Pass 1 complete\n"));
@@ -164,6 +165,8 @@ static int jffs2_build_filesystem(struct jffs2_sb_info *c)
ic->scan_dents = NULL;
cond_resched();
}
+ c->flags &= ~JFFS2_SB_FLAG_BUILDING;
+
D1(printk(KERN_DEBUG "Pass 3 complete\n"));
D2(jffs2_dump_block_lists(c));
diff --git a/fs/jffs2/compr_zlib.c b/fs/jffs2/compr_zlib.c
index 078a30e406b..83f7e0788fd 100644
--- a/fs/jffs2/compr_zlib.c
+++ b/fs/jffs2/compr_zlib.c
@@ -7,7 +7,7 @@
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: compr_zlib.c,v 1.29 2004/11/16 20:36:11 dwmw2 Exp $
+ * $Id: compr_zlib.c,v 1.31 2005/05/20 19:30:06 gleixner Exp $
*
*/
@@ -17,10 +17,10 @@
#include <linux/config.h>
#include <linux/kernel.h>
+#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/zlib.h>
#include <linux/zutil.h>
-#include <asm/semaphore.h>
#include "nodelist.h"
#include "compr.h"
diff --git a/fs/jffs2/dir.c b/fs/jffs2/dir.c
index 757306fa3ff..3ca0d25eef1 100644
--- a/fs/jffs2/dir.c
+++ b/fs/jffs2/dir.c
@@ -7,7 +7,7 @@
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: dir.c,v 1.84 2004/11/16 20:36:11 dwmw2 Exp $
+ * $Id: dir.c,v 1.86 2005/07/06 12:13:09 dwmw2 Exp $
*
*/
@@ -22,16 +22,6 @@
#include <linux/time.h>
#include "nodelist.h"
-/* Urgh. Please tell me there's a nicer way of doing these. */
-#include <linux/version.h>
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,48)
-typedef int mknod_arg_t;
-#define NAMEI_COMPAT(x) ((void *)x)
-#else
-typedef dev_t mknod_arg_t;
-#define NAMEI_COMPAT(x) (x)
-#endif
-
static int jffs2_readdir (struct file *, void *, filldir_t);
static int jffs2_create (struct inode *,struct dentry *,int,
@@ -43,7 +33,7 @@ static int jffs2_unlink (struct inode *,struct dentry *);
static int jffs2_symlink (struct inode *,struct dentry *,const char *);
static int jffs2_mkdir (struct inode *,struct dentry *,int);
static int jffs2_rmdir (struct inode *,struct dentry *);
-static int jffs2_mknod (struct inode *,struct dentry *,int,mknod_arg_t);
+static int jffs2_mknod (struct inode *,struct dentry *,int,dev_t);
static int jffs2_rename (struct inode *, struct dentry *,
struct inode *, struct dentry *);
@@ -58,8 +48,8 @@ struct file_operations jffs2_dir_operations =
struct inode_operations jffs2_dir_inode_operations =
{
- .create = NAMEI_COMPAT(jffs2_create),
- .lookup = NAMEI_COMPAT(jffs2_lookup),
+ .create = jffs2_create,
+ .lookup = jffs2_lookup,
.link = jffs2_link,
.unlink = jffs2_unlink,
.symlink = jffs2_symlink,
@@ -296,11 +286,11 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char
struct jffs2_full_dirent *fd;
int namelen;
uint32_t alloclen, phys_ofs;
- int ret;
+ int ret, targetlen = strlen(target);
/* FIXME: If you care. We'd need to use frags for the target
if it grows much more than this */
- if (strlen(target) > 254)
+ if (targetlen > 254)
return -EINVAL;
ri = jffs2_alloc_raw_inode();
@@ -314,7 +304,7 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char
* Just the node will do for now, though
*/
namelen = dentry->d_name.len;
- ret = jffs2_reserve_space(c, sizeof(*ri) + strlen(target), &phys_ofs, &alloclen, ALLOC_NORMAL);
+ ret = jffs2_reserve_space(c, sizeof(*ri) + targetlen, &phys_ofs, &alloclen, ALLOC_NORMAL);
if (ret) {
jffs2_free_raw_inode(ri);
@@ -333,16 +323,16 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char
f = JFFS2_INODE_INFO(inode);
- inode->i_size = strlen(target);
+ inode->i_size = targetlen;
ri->isize = ri->dsize = ri->csize = cpu_to_je32(inode->i_size);
ri->totlen = cpu_to_je32(sizeof(*ri) + inode->i_size);
ri->hdr_crc = cpu_to_je32(crc32(0, ri, sizeof(struct jffs2_unknown_node)-4));
ri->compr = JFFS2_COMPR_NONE;
- ri->data_crc = cpu_to_je32(crc32(0, target, strlen(target)));
+ ri->data_crc = cpu_to_je32(crc32(0, target, targetlen));
ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8));
- fn = jffs2_write_dnode(c, f, ri, target, strlen(target), phys_ofs, ALLOC_NORMAL);
+ fn = jffs2_write_dnode(c, f, ri, target, targetlen, phys_ofs, ALLOC_NORMAL);
jffs2_free_raw_inode(ri);
@@ -353,6 +343,20 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char
jffs2_clear_inode(inode);
return PTR_ERR(fn);
}
+
+ /* We use f->dents field to store the target path. */
+ f->dents = kmalloc(targetlen + 1, GFP_KERNEL);
+ if (!f->dents) {
+ printk(KERN_WARNING "Can't allocate %d bytes of memory\n", targetlen + 1);
+ up(&f->sem);
+ jffs2_complete_reservation(c);
+ jffs2_clear_inode(inode);
+ return -ENOMEM;
+ }
+
+ memcpy(f->dents, target, targetlen + 1);
+ D1(printk(KERN_DEBUG "jffs2_symlink: symlink's target '%s' cached\n", (char *)f->dents));
+
/* No data here. Only a metadata node, which will be
obsoleted by the first data write
*/
@@ -564,7 +568,7 @@ static int jffs2_rmdir (struct inode *dir_i, struct dentry *dentry)
return ret;
}
-static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, mknod_arg_t rdev)
+static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, dev_t rdev)
{
struct jffs2_inode_info *f, *dir_f;
struct jffs2_sb_info *c;
diff --git a/fs/jffs2/erase.c b/fs/jffs2/erase.c
index 41451e8bf36..6a4c0a3685d 100644
--- a/fs/jffs2/erase.c
+++ b/fs/jffs2/erase.c
@@ -7,7 +7,7 @@
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: erase.c,v 1.66 2004/11/16 20:36:11 dwmw2 Exp $
+ * $Id: erase.c,v 1.76 2005/05/03 15:11:40 dedekind Exp $
*
*/
@@ -48,6 +48,7 @@ static void jffs2_erase_block(struct jffs2_sb_info *c,
#else /* Linux */
struct erase_info *instr;
+ D1(printk(KERN_DEBUG "jffs2_erase_block(): erase block %#x (range %#x-%#x)\n", jeb->offset, jeb->offset, jeb->offset + c->sector_size));
instr = kmalloc(sizeof(struct erase_info) + sizeof(struct erase_priv_struct), GFP_KERNEL);
if (!instr) {
printk(KERN_WARNING "kmalloc for struct erase_info in jffs2_erase_block failed. Refiling block for later\n");
@@ -233,7 +234,7 @@ static inline void jffs2_remove_node_refs_from_ino_list(struct jffs2_sb_info *c,
continue;
}
- if (((*prev)->flash_offset & ~(c->sector_size -1)) == jeb->offset) {
+ if (SECTOR_ADDR((*prev)->flash_offset) == jeb->offset) {
/* It's in the block we're erasing */
struct jffs2_raw_node_ref *this;
@@ -277,11 +278,8 @@ static inline void jffs2_remove_node_refs_from_ino_list(struct jffs2_sb_info *c,
printk("\n");
});
- if (ic->nodes == (void *)ic) {
- D1(printk(KERN_DEBUG "inocache for ino #%u is all gone now. Freeing\n", ic->ino));
+ if (ic->nodes == (void *)ic && ic->nlink == 0)
jffs2_del_ino_cache(c, ic);
- jffs2_free_inode_cache(ic);
- }
}
static void jffs2_free_all_node_refs(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb)
@@ -310,7 +308,7 @@ static void jffs2_mark_erased_block(struct jffs2_sb_info *c, struct jffs2_eraseb
int ret;
uint32_t bad_offset;
- if (!jffs2_cleanmarker_oob(c)) {
+ if ((!jffs2_cleanmarker_oob(c)) && (c->cleanmarker_size > 0)) {
marker_ref = jffs2_alloc_raw_node_ref();
if (!marker_ref) {
printk(KERN_WARNING "Failed to allocate raw node ref for clean marker\n");
@@ -335,7 +333,8 @@ static void jffs2_mark_erased_block(struct jffs2_sb_info *c, struct jffs2_eraseb
bad_offset = ofs;
- ret = jffs2_flash_read(c, ofs, readlen, &retlen, ebuf);
+ ret = c->mtd->read(c->mtd, ofs, readlen, &retlen, ebuf);
+
if (ret) {
printk(KERN_WARNING "Read of newly-erased block at 0x%08x failed: %d. Putting on bad_list\n", ofs, ret);
goto bad;
@@ -351,7 +350,7 @@ static void jffs2_mark_erased_block(struct jffs2_sb_info *c, struct jffs2_eraseb
bad_offset += i;
printk(KERN_WARNING "Newly-erased block contained word 0x%lx at offset 0x%08x\n", datum, bad_offset);
bad:
- if (!jffs2_cleanmarker_oob(c))
+ if ((!jffs2_cleanmarker_oob(c)) && (c->cleanmarker_size > 0))
jffs2_free_raw_node_ref(marker_ref);
kfree(ebuf);
bad2:
@@ -387,6 +386,13 @@ static void jffs2_mark_erased_block(struct jffs2_sb_info *c, struct jffs2_eraseb
jeb->used_size = 0;
jeb->dirty_size = 0;
jeb->wasted_size = 0;
+ } else if (c->cleanmarker_size == 0) {
+ jeb->first_node = jeb->last_node = NULL;
+
+ jeb->free_size = c->sector_size;
+ jeb->used_size = 0;
+ jeb->dirty_size = 0;
+ jeb->wasted_size = 0;
} else {
struct kvec vecs[1];
struct jffs2_unknown_node marker = {
diff --git a/fs/jffs2/file.c b/fs/jffs2/file.c
index 771a554701d..bd9ed9b0247 100644
--- a/fs/jffs2/file.c
+++ b/fs/jffs2/file.c
@@ -7,11 +7,10 @@
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: file.c,v 1.99 2004/11/16 20:36:11 dwmw2 Exp $
+ * $Id: file.c,v 1.102 2005/07/06 12:13:09 dwmw2 Exp $
*
*/
-#include <linux/version.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/fs.h>
@@ -51,9 +50,7 @@ struct file_operations jffs2_file_operations =
.ioctl = jffs2_ioctl,
.mmap = generic_file_readonly_mmap,
.fsync = jffs2_fsync,
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,29)
.sendfile = generic_file_sendfile
-#endif
};
/* jffs2_file_inode_operations */
diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c
index 30ab233fe42..5687c3f4200 100644
--- a/fs/jffs2/fs.c
+++ b/fs/jffs2/fs.c
@@ -7,11 +7,10 @@
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: fs.c,v 1.51 2004/11/28 12:19:37 dedekind Exp $
+ * $Id: fs.c,v 1.56 2005/07/06 12:13:09 dwmw2 Exp $
*
*/
-#include <linux/version.h>
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/sched.h>
@@ -450,11 +449,15 @@ int jffs2_do_fill_super(struct super_block *sb, void *data, int silent)
c = JFFS2_SB_INFO(sb);
-#ifndef CONFIG_JFFS2_FS_NAND
+#ifndef CONFIG_JFFS2_FS_WRITEBUFFER
if (c->mtd->type == MTD_NANDFLASH) {
printk(KERN_ERR "jffs2: Cannot operate on NAND flash unless jffs2 NAND support is compiled in.\n");
return -EINVAL;
}
+ if (c->mtd->type == MTD_DATAFLASH) {
+ printk(KERN_ERR "jffs2: Cannot operate on DataFlash unless jffs2 DataFlash support is compiled in.\n");
+ return -EINVAL;
+ }
#endif
c->flash_size = c->mtd->size;
@@ -522,9 +525,7 @@ int jffs2_do_fill_super(struct super_block *sb, void *data, int silent)
if (!sb->s_root)
goto out_root_i;
-#if LINUX_VERSION_CODE >= 0x20403
sb->s_maxbytes = 0xFFFFFFFF;
-#endif
sb->s_blocksize = PAGE_CACHE_SIZE;
sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
sb->s_magic = JFFS2_SUPER_MAGIC;
@@ -661,6 +662,14 @@ static int jffs2_flash_setup(struct jffs2_sb_info *c) {
if (ret)
return ret;
}
+
+ /* and Dataflash */
+ if (jffs2_dataflash(c)) {
+ ret = jffs2_dataflash_setup(c);
+ if (ret)
+ return ret;
+ }
+
return ret;
}
@@ -674,4 +683,9 @@ void jffs2_flash_cleanup(struct jffs2_sb_info *c) {
if (jffs2_nor_ecc(c)) {
jffs2_nor_ecc_flash_cleanup(c);
}
+
+ /* and DataFlash */
+ if (jffs2_dataflash(c)) {
+ jffs2_dataflash_cleanup(c);
+ }
}
diff --git a/fs/jffs2/gc.c b/fs/jffs2/gc.c
index 87ec74ff593..7086cd63450 100644
--- a/fs/jffs2/gc.c
+++ b/fs/jffs2/gc.c
@@ -7,7 +7,7 @@
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: gc.c,v 1.144 2004/12/21 11:18:50 dwmw2 Exp $
+ * $Id: gc.c,v 1.148 2005/04/09 10:47:00 dedekind Exp $
*
*/
@@ -50,6 +50,7 @@ static struct jffs2_eraseblock *jffs2_find_gc_block(struct jffs2_sb_info *c)
put the clever wear-levelling algorithms. Eventually. */
/* We possibly want to favour the dirtier blocks more when the
number of free blocks is low. */
+again:
if (!list_empty(&c->bad_used_list) && c->nr_free_blocks > c->resv_blocks_gcbad) {
D1(printk(KERN_DEBUG "Picking block from bad_used_list to GC next\n"));
nextlist = &c->bad_used_list;
@@ -79,6 +80,13 @@ static struct jffs2_eraseblock *jffs2_find_gc_block(struct jffs2_sb_info *c)
D1(printk(KERN_DEBUG "Picking block from erasable_list to GC next (clean_list and {very_,}dirty_list were empty)\n"));
nextlist = &c->erasable_list;
+ } else if (!list_empty(&c->erasable_pending_wbuf_list)) {
+ /* There are blocks are wating for the wbuf sync */
+ D1(printk(KERN_DEBUG "Synching wbuf in order to reuse erasable_pending_wbuf_list blocks\n"));
+ spin_unlock(&c->erase_completion_lock);
+ jffs2_flush_wbuf_pad(c);
+ spin_lock(&c->erase_completion_lock);
+ goto again;
} else {
/* Eep. All were empty */
D1(printk(KERN_NOTICE "jffs2: No clean, dirty _or_ erasable blocks to GC from! Where are they all?\n"));
@@ -661,9 +669,10 @@ static int jffs2_garbage_collect_metadata(struct jffs2_sb_info *c, struct jffs2_
{
struct jffs2_full_dnode *new_fn;
struct jffs2_raw_inode ri;
+ struct jffs2_node_frag *last_frag;
jint16_t dev;
char *mdata = NULL, mdatalen = 0;
- uint32_t alloclen, phys_ofs;
+ uint32_t alloclen, phys_ofs, ilen;
int ret;
if (S_ISBLK(JFFS2_F_I_MODE(f)) ||
@@ -699,6 +708,14 @@ static int jffs2_garbage_collect_metadata(struct jffs2_sb_info *c, struct jffs2_
goto out;
}
+ last_frag = frag_last(&f->fragtree);
+ if (last_frag)
+ /* Fetch the inode length from the fragtree rather then
+ * from i_size since i_size may have not been updated yet */
+ ilen = last_frag->ofs + last_frag->size;
+ else
+ ilen = JFFS2_F_I_SIZE(f);
+
memset(&ri, 0, sizeof(ri));
ri.magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
ri.nodetype = cpu_to_je16(JFFS2_NODETYPE_INODE);
@@ -710,7 +727,7 @@ static int jffs2_garbage_collect_metadata(struct jffs2_sb_info *c, struct jffs2_
ri.mode = cpu_to_jemode(JFFS2_F_I_MODE(f));
ri.uid = cpu_to_je16(JFFS2_F_I_UID(f));
ri.gid = cpu_to_je16(JFFS2_F_I_GID(f));
- ri.isize = cpu_to_je32(JFFS2_F_I_SIZE(f));
+ ri.isize = cpu_to_je32(ilen);
ri.atime = cpu_to_je32(JFFS2_F_I_ATIME(f));
ri.ctime = cpu_to_je32(JFFS2_F_I_CTIME(f));
ri.mtime = cpu_to_je32(JFFS2_F_I_MTIME(f));
@@ -816,8 +833,7 @@ static int jffs2_garbage_collect_deletion_dirent(struct jffs2_sb_info *c, struct
/* Doesn't matter if there's one in the same erase block. We're going to
delete it too at the same time. */
- if ((raw->flash_offset & ~(c->sector_size-1)) ==
- (fd->raw->flash_offset & ~(c->sector_size-1)))
+ if (SECTOR_ADDR(raw->flash_offset) == SECTOR_ADDR(fd->raw->flash_offset))
continue;
D1(printk(KERN_DEBUG "Check potential deletion dirent at %08x\n", ref_offset(raw)));
@@ -891,7 +907,7 @@ static int jffs2_garbage_collect_hole(struct jffs2_sb_info *c, struct jffs2_eras
struct jffs2_raw_inode ri;
struct jffs2_node_frag *frag;
struct jffs2_full_dnode *new_fn;
- uint32_t alloclen, phys_ofs;
+ uint32_t alloclen, phys_ofs, ilen;
int ret;
D1(printk(KERN_DEBUG "Writing replacement hole node for ino #%u from offset 0x%x to 0x%x\n",
@@ -951,10 +967,19 @@ static int jffs2_garbage_collect_hole(struct jffs2_sb_info *c, struct jffs2_eras
ri.csize = cpu_to_je32(0);
ri.compr = JFFS2_COMPR_ZERO;
}
+
+ frag = frag_last(&f->fragtree);
+ if (frag)
+ /* Fetch the inode length from the fragtree rather then
+ * from i_size since i_size may have not been updated yet */
+ ilen = frag->ofs + frag->size;
+ else
+ ilen = JFFS2_F_I_SIZE(f);
+
ri.mode = cpu_to_jemode(JFFS2_F_I_MODE(f));
ri.uid = cpu_to_je16(JFFS2_F_I_UID(f));
ri.gid = cpu_to_je16(JFFS2_F_I_GID(f));
- ri.isize = cpu_to_je32(JFFS2_F_I_SIZE(f));
+ ri.isize = cpu_to_je32(ilen);
ri.atime = cpu_to_je32(JFFS2_F_I_ATIME(f));
ri.ctime = cpu_to_je32(JFFS2_F_I_CTIME(f));
ri.mtime = cpu_to_je32(JFFS2_F_I_MTIME(f));
@@ -1161,7 +1186,7 @@ static int jffs2_garbage_collect_dnode(struct jffs2_sb_info *c, struct jffs2_era
D1(printk(KERN_DEBUG "Expanded dnode to write from (0x%x-0x%x) to (0x%x-0x%x)\n",
orig_start, orig_end, start, end));
- BUG_ON(end > JFFS2_F_I_SIZE(f));
+ D1(BUG_ON(end > frag_last(&f->fragtree)->ofs + frag_last(&f->fragtree)->size));
BUG_ON(end < orig_end);
BUG_ON(start > orig_start);
}
diff --git a/fs/jffs2/nodelist.c b/fs/jffs2/nodelist.c
index cd6a8bd13e0..c7bbdeec93a 100644
--- a/fs/jffs2/nodelist.c
+++ b/fs/jffs2/nodelist.c
@@ -7,7 +7,7 @@
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: nodelist.c,v 1.90 2004/12/08 17:59:20 dwmw2 Exp $
+ * $Id: nodelist.c,v 1.97 2005/07/06 15:18:41 dwmw2 Exp $
*
*/
@@ -58,27 +58,60 @@ void jffs2_add_fd_to_list(struct jffs2_sb_info *c, struct jffs2_full_dirent *new
/* Put a new tmp_dnode_info into the list, keeping the list in
order of increasing version
*/
-static void jffs2_add_tn_to_list(struct jffs2_tmp_dnode_info *tn, struct jffs2_tmp_dnode_info **list)
+
+static void jffs2_add_tn_to_list(struct jffs2_tmp_dnode_info *tn, struct rb_root *list)
{
- struct jffs2_tmp_dnode_info **prev = list;
-
- while ((*prev) && (*prev)->version < tn->version) {
- prev = &((*prev)->next);
- }
- tn->next = (*prev);
- *prev = tn;
+ struct rb_node **p = &list->rb_node;
+ struct rb_node * parent = NULL;
+ struct jffs2_tmp_dnode_info *this;
+
+ while (*p) {
+ parent = *p;
+ this = rb_entry(parent, struct jffs2_tmp_dnode_info, rb);
+
+ /* There may actually be a collision here, but it doesn't
+ actually matter. As long as the two nodes with the same
+ version are together, it's all fine. */
+ if (tn->version < this->version)
+ p = &(*p)->rb_left;
+ else
+ p = &(*p)->rb_right;
+ }
+
+ rb_link_node(&tn->rb, parent, p);
+ rb_insert_color(&tn->rb, list);
}
-static void jffs2_free_tmp_dnode_info_list(struct jffs2_tmp_dnode_info *tn)
+static void jffs2_free_tmp_dnode_info_list(struct rb_root *list)
{
- struct jffs2_tmp_dnode_info *next;
+ struct rb_node *this;
+ struct jffs2_tmp_dnode_info *tn;
+
+ this = list->rb_node;
+
+ /* Now at bottom of tree */
+ while (this) {
+ if (this->rb_left)
+ this = this->rb_left;
+ else if (this->rb_right)
+ this = this->rb_right;
+ else {
+ tn = rb_entry(this, struct jffs2_tmp_dnode_info, rb);
+ jffs2_free_full_dnode(tn->fn);
+ jffs2_free_tmp_dnode_info(tn);
+
+ this = this->rb_parent;
+ if (!this)
+ break;
- while (tn) {
- next = tn;
- tn = tn->next;
- jffs2_free_full_dnode(next->fn);
- jffs2_free_tmp_dnode_info(next);
+ if (this->rb_left == &tn->rb)
+ this->rb_left = NULL;
+ else if (this->rb_right == &tn->rb)
+ this->rb_right = NULL;
+ else BUG();
+ }
}
+ list->rb_node = NULL;
}
static void jffs2_free_full_dirent_list(struct jffs2_full_dirent *fd)
@@ -108,12 +141,13 @@ static struct jffs2_raw_node_ref *jffs2_first_valid_node(struct jffs2_raw_node_r
with this ino, returning the former in order of version */
int jffs2_get_inode_nodes(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
- struct jffs2_tmp_dnode_info **tnp, struct jffs2_full_dirent **fdp,
+ struct rb_root *tnp, struct jffs2_full_dirent **fdp,
uint32_t *highest_version, uint32_t *latest_mctime,
uint32_t *mctime_ver)
{
struct jffs2_raw_node_ref *ref, *valid_ref;
- struct jffs2_tmp_dnode_info *tn, *ret_tn = NULL;
+ struct jffs2_tmp_dnode_info *tn;
+ struct rb_root ret_tn = RB_ROOT;
struct jffs2_full_dirent *fd, *ret_fd = NULL;
union jffs2_node_union node;
size_t retlen;
@@ -127,7 +161,7 @@ int jffs2_get_inode_nodes(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
valid_ref = jffs2_first_valid_node(f->inocache->nodes);
- if (!valid_ref)
+ if (!valid_ref && (f->inocache->ino != 1))
printk(KERN_WARNING "Eep. No valid nodes for ino #%u\n", f->inocache->ino);
while (valid_ref) {
@@ -450,7 +484,7 @@ int jffs2_get_inode_nodes(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
return 0;
free_out:
- jffs2_free_tmp_dnode_info_list(ret_tn);
+ jffs2_free_tmp_dnode_info_list(&ret_tn);
jffs2_free_full_dirent_list(ret_fd);
return err;
}
@@ -489,9 +523,13 @@ struct jffs2_inode_cache *jffs2_get_ino_cache(struct jffs2_sb_info *c, uint32_t
void jffs2_add_ino_cache (struct jffs2_sb_info *c, struct jffs2_inode_cache *new)
{
struct jffs2_inode_cache **prev;
- D2(printk(KERN_DEBUG "jffs2_add_ino_cache: Add %p (ino #%u)\n", new, new->ino));
+
spin_lock(&c->inocache_lock);
-
+ if (!new->ino)
+ new->ino = ++c->highest_ino;
+
+ D2(printk(KERN_DEBUG "jffs2_add_ino_cache: Add %p (ino #%u)\n", new, new->ino));
+
prev = &c->inocache_list[new->ino % INOCACHE_HASHSIZE];
while ((*prev) && (*prev)->ino < new->ino) {
@@ -506,7 +544,7 @@ void jffs2_add_ino_cache (struct jffs2_sb_info *c, struct jffs2_inode_cache *new
void jffs2_del_ino_cache(struct jffs2_sb_info *c, struct jffs2_inode_cache *old)
{
struct jffs2_inode_cache **prev;
- D2(printk(KERN_DEBUG "jffs2_del_ino_cache: Del %p (ino #%u)\n", old, old->ino));
+ D1(printk(KERN_DEBUG "jffs2_del_ino_cache: Del %p (ino #%u)\n", old, old->ino));
spin_lock(&c->inocache_lock);
prev = &c->inocache_list[old->ino % INOCACHE_HASHSIZE];
@@ -518,6 +556,14 @@ void jffs2_del_ino_cache(struct jffs2_sb_info *c, struct jffs2_inode_cache *old)
*prev = old->next;
}
+ /* Free it now unless it's in READING or CLEARING state, which
+ are the transitions upon read_inode() and clear_inode(). The
+ rest of the time we know nobody else is looking at it, and
+ if it's held by read_inode() or clear_inode() they'll free it
+ for themselves. */
+ if (old->state != INO_STATE_READING && old->state != INO_STATE_CLEARING)
+ jffs2_free_inode_cache(old);
+
spin_unlock(&c->inocache_lock);
}
@@ -530,7 +576,6 @@ void jffs2_free_ino_caches(struct jffs2_sb_info *c)
this = c->inocache_list[i];
while (this) {
next = this->next;
- D2(printk(KERN_DEBUG "jffs2_free_ino_caches: Freeing ino #%u at %p\n", this->ino, this));
jffs2_free_inode_cache(this);
this = next;
}
diff --git a/fs/jffs2/nodelist.h b/fs/jffs2/nodelist.h
index a4864d05ea9..b34c397909e 100644
--- a/fs/jffs2/nodelist.h
+++ b/fs/jffs2/nodelist.h
@@ -7,7 +7,7 @@
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: nodelist.h,v 1.126 2004/11/19 15:06:29 dedekind Exp $
+ * $Id: nodelist.h,v 1.131 2005/07/05 21:03:07 dwmw2 Exp $
*
*/
@@ -135,6 +135,7 @@ struct jffs2_inode_cache {
#define INO_STATE_CHECKEDABSENT 3 /* Checked, cleared again */
#define INO_STATE_GC 4 /* GCing a 'pristine' node */
#define INO_STATE_READING 5 /* In read_inode() */
+#define INO_STATE_CLEARING 6 /* In clear_inode() */
#define INOCACHE_HASHSIZE 128
@@ -160,7 +161,7 @@ struct jffs2_full_dnode
*/
struct jffs2_tmp_dnode_info
{
- struct jffs2_tmp_dnode_info *next;
+ struct rb_node rb;
struct jffs2_full_dnode *fn;
uint32_t version;
};
@@ -362,6 +363,18 @@ static inline struct jffs2_node_frag *frag_first(struct rb_root *root)
node = node->rb_left;
return rb_entry(node, struct jffs2_node_frag, rb);
}
+
+static inline struct jffs2_node_frag *frag_last(struct rb_root *root)
+{
+ struct rb_node *node = root->rb_node;
+
+ if (!node)
+ return NULL;
+ while(node->rb_right)
+ node = node->rb_right;
+ return rb_entry(node, struct jffs2_node_frag, rb);
+}
+
#define rb_parent(rb) ((rb)->rb_parent)
#define frag_next(frag) rb_entry(rb_next(&(frag)->rb), struct jffs2_node_frag, rb)
#define frag_prev(frag) rb_entry(rb_prev(&(frag)->rb), struct jffs2_node_frag, rb)
@@ -374,7 +387,7 @@ static inline struct jffs2_node_frag *frag_first(struct rb_root *root)
D2(void jffs2_print_frag_list(struct jffs2_inode_info *f));
void jffs2_add_fd_to_list(struct jffs2_sb_info *c, struct jffs2_full_dirent *new, struct jffs2_full_dirent **list);
int jffs2_get_inode_nodes(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
- struct jffs2_tmp_dnode_info **tnp, struct jffs2_full_dirent **fdp,
+ struct rb_root *tnp, struct jffs2_full_dirent **fdp,
uint32_t *highest_version, uint32_t *latest_mctime,
uint32_t *mctime_ver);
void jffs2_set_inocache_state(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic, int state);
@@ -462,7 +475,7 @@ int jffs2_do_mount_fs(struct jffs2_sb_info *c);
/* erase.c */
void jffs2_erase_pending_blocks(struct jffs2_sb_info *c, int count);
-#ifdef CONFIG_JFFS2_FS_NAND
+#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
/* wbuf.c */
int jffs2_flush_wbuf_gc(struct jffs2_sb_info *c, uint32_t ino);
int jffs2_flush_wbuf_pad(struct jffs2_sb_info *c);
diff --git a/fs/jffs2/nodemgmt.c b/fs/jffs2/nodemgmt.c
index 2651135bdf4..c1d8b5ed9ab 100644
--- a/fs/jffs2/nodemgmt.c
+++ b/fs/jffs2/nodemgmt.c
@@ -7,7 +7,7 @@
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: nodemgmt.c,v 1.115 2004/11/22 11:07:21 dwmw2 Exp $
+ * $Id: nodemgmt.c,v 1.122 2005/05/06 09:30:27 dedekind Exp $
*
*/
@@ -75,7 +75,7 @@ int jffs2_reserve_space(struct jffs2_sb_info *c, uint32_t minsize, uint32_t *ofs
dirty = c->dirty_size + c->erasing_size - c->nr_erasing_blocks * c->sector_size + c->unchecked_size;
if (dirty < c->nospc_dirty_size) {
if (prio == ALLOC_DELETION && c->nr_free_blocks + c->nr_erasing_blocks >= c->resv_blocks_deletion) {
- printk(KERN_NOTICE "jffs2_reserve_space(): Low on dirty space to GC, but it's a deletion. Allowing...\n");
+ D1(printk(KERN_NOTICE "jffs2_reserve_space(): Low on dirty space to GC, but it's a deletion. Allowing...\n"));
break;
}
D1(printk(KERN_DEBUG "dirty size 0x%08x + unchecked_size 0x%08x < nospc_dirty_size 0x%08x, returning -ENOSPC\n",
@@ -98,7 +98,7 @@ int jffs2_reserve_space(struct jffs2_sb_info *c, uint32_t minsize, uint32_t *ofs
avail = c->free_size + c->dirty_size + c->erasing_size + c->unchecked_size;
if ( (avail / c->sector_size) <= blocksneeded) {
if (prio == ALLOC_DELETION && c->nr_free_blocks + c->nr_erasing_blocks >= c->resv_blocks_deletion) {
- printk(KERN_NOTICE "jffs2_reserve_space(): Low on possibly available space, but it's a deletion. Allowing...\n");
+ D1(printk(KERN_NOTICE "jffs2_reserve_space(): Low on possibly available space, but it's a deletion. Allowing...\n"));
break;
}
@@ -308,7 +308,10 @@ int jffs2_add_physical_node_ref(struct jffs2_sb_info *c, struct jffs2_raw_node_r
D1(printk(KERN_DEBUG "jffs2_add_physical_node_ref(): Node at 0x%x(%d), size 0x%x\n", ref_offset(new), ref_flags(new), len));
#if 1
- if (jeb != c->nextblock || (ref_offset(new)) != jeb->offset + (c->sector_size - jeb->free_size)) {
+ /* we could get some obsolete nodes after nextblock was refiled
+ in wbuf.c */
+ if ((c->nextblock || !ref_obsolete(new))
+ &&(jeb != c->nextblock || ref_offset(new) != jeb->offset + (c->sector_size - jeb->free_size))) {
printk(KERN_WARNING "argh. node added in wrong place\n");
jffs2_free_raw_node_ref(new);
return -EINVAL;
@@ -332,7 +335,7 @@ int jffs2_add_physical_node_ref(struct jffs2_sb_info *c, struct jffs2_raw_node_r
c->used_size += len;
}
- if (!jeb->free_size && !jeb->dirty_size) {
+ if (!jeb->free_size && !jeb->dirty_size && !ISDIRTY(jeb->wasted_size)) {
/* If it lives on the dirty_list, jffs2_reserve_space will put it there */
D1(printk(KERN_DEBUG "Adding full erase block at 0x%08x to clean_list (free 0x%08x, dirty 0x%08x, used 0x%08x\n",
jeb->offset, jeb->free_size, jeb->dirty_size, jeb->used_size));
@@ -400,7 +403,7 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
jeb = &c->blocks[blocknr];
if (jffs2_can_mark_obsolete(c) && !jffs2_is_readonly(c) &&
- !(c->flags & JFFS2_SB_FLAG_MOUNTING)) {
+ !(c->flags & (JFFS2_SB_FLAG_SCANNING | JFFS2_SB_FLAG_BUILDING))) {
/* Hm. This may confuse static lock analysis. If any of the above
three conditions is false, we're going to return from this
function without actually obliterating any nodes or freeing
@@ -434,7 +437,7 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
// Take care, that wasted size is taken into concern
if ((jeb->dirty_size || ISDIRTY(jeb->wasted_size + ref_totlen(c, jeb, ref))) && jeb != c->nextblock) {
- D1(printk("Dirtying\n"));
+ D1(printk(KERN_DEBUG "Dirtying\n"));
addedsize = ref_totlen(c, jeb, ref);
jeb->dirty_size += ref_totlen(c, jeb, ref);
c->dirty_size += ref_totlen(c, jeb, ref);
@@ -456,7 +459,7 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
}
}
} else {
- D1(printk("Wasting\n"));
+ D1(printk(KERN_DEBUG "Wasting\n"));
addedsize = 0;
jeb->wasted_size += ref_totlen(c, jeb, ref);
c->wasted_size += ref_totlen(c, jeb, ref);
@@ -467,8 +470,8 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
D1(ACCT_PARANOIA_CHECK(jeb));
- if (c->flags & JFFS2_SB_FLAG_MOUNTING) {
- /* Mount in progress. Don't muck about with the block
+ if (c->flags & JFFS2_SB_FLAG_SCANNING) {
+ /* Flash scanning is in progress. Don't muck about with the block
lists because they're not ready yet, and don't actually
obliterate nodes that look obsolete. If they weren't
marked obsolete on the flash at the time they _became_
@@ -527,7 +530,8 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
spin_unlock(&c->erase_completion_lock);
- if (!jffs2_can_mark_obsolete(c) || jffs2_is_readonly(c)) {
+ if (!jffs2_can_mark_obsolete(c) || jffs2_is_readonly(c) ||
+ (c->flags & JFFS2_SB_FLAG_BUILDING)) {
/* We didn't lock the erase_free_sem */
return;
}
@@ -590,11 +594,8 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
*p = ref->next_in_ino;
ref->next_in_ino = NULL;
- if (ic->nodes == (void *)ic) {
- D1(printk(KERN_DEBUG "inocache for ino #%u is all gone now. Freeing\n", ic->ino));
+ if (ic->nodes == (void *)ic && ic->nlink == 0)
jffs2_del_ino_cache(c, ic);
- jffs2_free_inode_cache(ic);
- }
spin_unlock(&c->erase_completion_lock);
}
diff --git a/fs/jffs2/os-linux.h b/fs/jffs2/os-linux.h
index 03b0acc37b7..7bf72e012c9 100644
--- a/fs/jffs2/os-linux.h
+++ b/fs/jffs2/os-linux.h
@@ -7,41 +7,24 @@
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: os-linux.h,v 1.51 2004/11/16 20:36:11 dwmw2 Exp $
+ * $Id: os-linux.h,v 1.57 2005/07/06 12:13:09 dwmw2 Exp $
*
*/
#ifndef __JFFS2_OS_LINUX_H__
#define __JFFS2_OS_LINUX_H__
-#include <linux/version.h>
/* JFFS2 uses Linux mode bits natively -- no need for conversion */
#define os_to_jffs2_mode(x) (x)
#define jffs2_to_os_mode(x) (x)
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,73)
-#define kstatfs statfs
-#endif
-
struct kstatfs;
struct kvec;
-#if LINUX_VERSION_CODE > KERNEL_VERSION(2,5,2)
#define JFFS2_INODE_INFO(i) (list_entry(i, struct jffs2_inode_info, vfs_inode))
#define OFNI_EDONI_2SFFJ(f) (&(f)->vfs_inode)
#define JFFS2_SB_INFO(sb) (sb->s_fs_info)
#define OFNI_BS_2SFFJ(c) ((struct super_block *)c->os_priv)
-#elif defined(JFFS2_OUT_OF_KERNEL)
-#define JFFS2_INODE_INFO(i) ((struct jffs2_inode_info *) &(i)->u)
-#define OFNI_EDONI_2SFFJ(f) ((struct inode *) ( ((char *)f) - ((char *)(&((struct inode *)NULL)->u)) ) )
-#define JFFS2_SB_INFO(sb) ((struct jffs2_sb_info *) &(sb)->u)
-#define OFNI_BS_2SFFJ(c) ((struct super_block *) ( ((char *)c) - ((char *)(&((struct super_block *)NULL)->u)) ) )
-#else
-#define JFFS2_INODE_INFO(i) (&i->u.jffs2_i)
-#define OFNI_EDONI_2SFFJ(f) ((struct inode *) ( ((char *)f) - ((char *)(&((struct inode *)NULL)->u)) ) )
-#define JFFS2_SB_INFO(sb) (&sb->u.jffs2_sb)
-#define OFNI_BS_2SFFJ(c) ((struct super_block *) ( ((char *)c) - ((char *)(&((struct super_block *)NULL)->u)) ) )
-#endif
#define JFFS2_F_I_SIZE(f) (OFNI_EDONI_2SFFJ(f)->i_size)
@@ -49,28 +32,14 @@ struct kvec;
#define JFFS2_F_I_UID(f) (OFNI_EDONI_2SFFJ(f)->i_uid)
#define JFFS2_F_I_GID(f) (OFNI_EDONI_2SFFJ(f)->i_gid)
-#if LINUX_VERSION_CODE > KERNEL_VERSION(2,5,1)
#define JFFS2_F_I_RDEV_MIN(f) (iminor(OFNI_EDONI_2SFFJ(f)))
#define JFFS2_F_I_RDEV_MAJ(f) (imajor(OFNI_EDONI_2SFFJ(f)))
-#else
-#define JFFS2_F_I_RDEV_MIN(f) (MINOR(to_kdev_t(OFNI_EDONI_2SFFJ(f)->i_rdev)))
-#define JFFS2_F_I_RDEV_MAJ(f) (MAJOR(to_kdev_t(OFNI_EDONI_2SFFJ(f)->i_rdev)))
-#endif
-/* Urgh. The things we do to keep the 2.4 build working */
-#if LINUX_VERSION_CODE > KERNEL_VERSION(2,5,47)
#define ITIME(sec) ((struct timespec){sec, 0})
#define I_SEC(tv) ((tv).tv_sec)
#define JFFS2_F_I_CTIME(f) (OFNI_EDONI_2SFFJ(f)->i_ctime.tv_sec)
#define JFFS2_F_I_MTIME(f) (OFNI_EDONI_2SFFJ(f)->i_mtime.tv_sec)
#define JFFS2_F_I_ATIME(f) (OFNI_EDONI_2SFFJ(f)->i_atime.tv_sec)
-#else
-#define ITIME(x) (x)
-#define I_SEC(x) (x)
-#define JFFS2_F_I_CTIME(f) (OFNI_EDONI_2SFFJ(f)->i_ctime)
-#define JFFS2_F_I_MTIME(f) (OFNI_EDONI_2SFFJ(f)->i_mtime)
-#define JFFS2_F_I_ATIME(f) (OFNI_EDONI_2SFFJ(f)->i_atime)
-#endif
#define sleep_on_spinunlock(wq, s) \
do { \
@@ -84,23 +53,21 @@ struct kvec;
static inline void jffs2_init_inode_info(struct jffs2_inode_info *f)
{
-#if LINUX_VERSION_CODE > KERNEL_VERSION(2,5,2)
f->highest_version = 0;
f->fragtree = RB_ROOT;
f->metadata = NULL;
f->dents = NULL;
f->flags = 0;
f->usercompr = 0;
-#else
- memset(f, 0, sizeof(*f));
- init_MUTEX_LOCKED(&f->sem);
-#endif
}
+
#define jffs2_is_readonly(c) (OFNI_BS_2SFFJ(c)->s_flags & MS_RDONLY)
-#if (!defined CONFIG_JFFS2_FS_NAND && !defined CONFIG_JFFS2_FS_NOR_ECC)
+#ifndef CONFIG_JFFS2_FS_WRITEBUFFER
+#define SECTOR_ADDR(x) ( ((unsigned long)(x) & ~(c->sector_size-1)) )
#define jffs2_can_mark_obsolete(c) (1)
+#define jffs2_is_writebuffered(c) (0)
#define jffs2_cleanmarker_oob(c) (0)
#define jffs2_write_nand_cleanmarker(c,jeb) (-EIO)
@@ -116,11 +83,14 @@ static inline void jffs2_init_inode_info(struct jffs2_inode_info *f)
#define jffs2_wbuf_timeout NULL
#define jffs2_wbuf_process NULL
#define jffs2_nor_ecc(c) (0)
+#define jffs2_dataflash(c) (0)
#define jffs2_nor_ecc_flash_setup(c) (0)
#define jffs2_nor_ecc_flash_cleanup(c) do {} while (0)
#else /* NAND and/or ECC'd NOR support present */
+#define jffs2_is_writebuffered(c) (c->wbuf != NULL)
+#define SECTOR_ADDR(x) ( ((unsigned long)(x) / (unsigned long)(c->sector_size)) * c->sector_size )
#define jffs2_can_mark_obsolete(c) ((c->mtd->type == MTD_NORFLASH && !(c->mtd->flags & MTD_ECC)) || c->mtd->type == MTD_RAM)
#define jffs2_cleanmarker_oob(c) (c->mtd->type == MTD_NANDFLASH)
@@ -142,16 +112,16 @@ int jffs2_flush_wbuf_gc(struct jffs2_sb_info *c, uint32_t ino);
int jffs2_flush_wbuf_pad(struct jffs2_sb_info *c);
int jffs2_nand_flash_setup(struct jffs2_sb_info *c);
void jffs2_nand_flash_cleanup(struct jffs2_sb_info *c);
-#ifdef CONFIG_JFFS2_FS_NOR_ECC
+
#define jffs2_nor_ecc(c) (c->mtd->type == MTD_NORFLASH && (c->mtd->flags & MTD_ECC))
int jffs2_nor_ecc_flash_setup(struct jffs2_sb_info *c);
void jffs2_nor_ecc_flash_cleanup(struct jffs2_sb_info *c);
-#else
-#define jffs2_nor_ecc(c) (0)
-#define jffs2_nor_ecc_flash_setup(c) (0)
-#define jffs2_nor_ecc_flash_cleanup(c) do {} while (0)
-#endif /* NOR ECC */
-#endif /* NAND */
+
+#define jffs2_dataflash(c) (c->mtd->type == MTD_DATAFLASH)
+int jffs2_dataflash_setup(struct jffs2_sb_info *c);
+void jffs2_dataflash_cleanup(struct jffs2_sb_info *c);
+
+#endif /* WRITEBUFFER */
/* erase.c */
static inline void jffs2_erase_pending_trigger(struct jffs2_sb_info *c)
diff --git a/fs/jffs2/read.c b/fs/jffs2/read.c
index eb493dc06db..c7f9068907c 100644
--- a/fs/jffs2/read.c
+++ b/fs/jffs2/read.c
@@ -7,7 +7,7 @@
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: read.c,v 1.38 2004/11/16 20:36:12 dwmw2 Exp $
+ * $Id: read.c,v 1.39 2005/03/01 10:34:03 dedekind Exp $
*
*/
@@ -214,33 +214,3 @@ int jffs2_read_inode_range(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
return 0;
}
-/* Core function to read symlink target. */
-char *jffs2_getlink(struct jffs2_sb_info *c, struct jffs2_inode_info *f)
-{
- char *buf;
- int ret;
-
- down(&f->sem);
-
- if (!f->metadata) {
- printk(KERN_NOTICE "No metadata for symlink inode #%u\n", f->inocache->ino);
- up(&f->sem);
- return ERR_PTR(-EINVAL);
- }
- buf = kmalloc(f->metadata->size+1, GFP_USER);
- if (!buf) {
- up(&f->sem);
- return ERR_PTR(-ENOMEM);
- }
- buf[f->metadata->size]=0;
-
- ret = jffs2_read_dnode(c, f, f->metadata, buf, 0, f->metadata->size);
-
- up(&f->sem);
-
- if (ret) {
- kfree(buf);
- return ERR_PTR(ret);
- }
- return buf;
-}
diff --git a/fs/jffs2/readinode.c b/fs/jffs2/readinode.c
index aca4a0b17bc..081656c1d49 100644
--- a/fs/jffs2/readinode.c
+++ b/fs/jffs2/readinode.c
@@ -7,7 +7,7 @@
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: readinode.c,v 1.117 2004/11/20 18:06:54 dwmw2 Exp $
+ * $Id: readinode.c,v 1.120 2005/07/05 21:03:07 dwmw2 Exp $
*
*/
@@ -500,7 +500,9 @@ static int jffs2_do_read_inode_internal(struct jffs2_sb_info *c,
struct jffs2_inode_info *f,
struct jffs2_raw_inode *latest_node)
{
- struct jffs2_tmp_dnode_info *tn_list, *tn;
+ struct jffs2_tmp_dnode_info *tn = NULL;
+ struct rb_root tn_list;
+ struct rb_node *rb, *repl_rb;
struct jffs2_full_dirent *fd_list;
struct jffs2_full_dnode *fn = NULL;
uint32_t crc;
@@ -522,9 +524,10 @@ static int jffs2_do_read_inode_internal(struct jffs2_sb_info *c,
}
f->dents = fd_list;
- while (tn_list) {
- tn = tn_list;
+ rb = rb_first(&tn_list);
+ while (rb) {
+ tn = rb_entry(rb, struct jffs2_tmp_dnode_info, rb);
fn = tn->fn;
if (f->metadata) {
@@ -556,7 +559,30 @@ static int jffs2_do_read_inode_internal(struct jffs2_sb_info *c,
mdata_ver = tn->version;
}
next_tn:
- tn_list = tn->next;
+ BUG_ON(rb->rb_left);
+ repl_rb = NULL;
+ if (rb->rb_parent && rb->rb_parent->rb_left == rb) {
+ /* We were then left-hand child of our parent. We need
+ to move our own right-hand child into our place. */
+ repl_rb = rb->rb_right;
+ if (repl_rb)
+ repl_rb->rb_parent = rb->rb_parent;
+ } else
+ repl_rb = NULL;
+
+ rb = rb_next(rb);
+
+ /* Remove the spent tn from the tree; don't bother rebalancing
+ but put our right-hand child in our own place. */
+ if (tn->rb.rb_parent) {
+ if (tn->rb.rb_parent->rb_left == &tn->rb)
+ tn->rb.rb_parent->rb_left = repl_rb;
+ else if (tn->rb.rb_parent->rb_right == &tn->rb)
+ tn->rb.rb_parent->rb_right = repl_rb;
+ else BUG();
+ } else if (tn->rb.rb_right)
+ tn->rb.rb_right->rb_parent = NULL;
+
jffs2_free_tmp_dnode_info(tn);
}
D1(jffs2_sanitycheck_fragtree(f));
@@ -623,6 +649,40 @@ static int jffs2_do_read_inode_internal(struct jffs2_sb_info *c,
case. */
if (!je32_to_cpu(latest_node->isize))
latest_node->isize = latest_node->dsize;
+
+ if (f->inocache->state != INO_STATE_CHECKING) {
+ /* Symlink's inode data is the target path. Read it and
+ * keep in RAM to facilitate quick follow symlink operation.
+ * We use f->dents field to store the target path, which
+ * is somewhat ugly. */
+ f->dents = kmalloc(je32_to_cpu(latest_node->csize) + 1, GFP_KERNEL);
+ if (!f->dents) {
+ printk(KERN_WARNING "Can't allocate %d bytes of memory "
+ "for the symlink target path cache\n",
+ je32_to_cpu(latest_node->csize));
+ up(&f->sem);
+ jffs2_do_clear_inode(c, f);
+ return -ENOMEM;
+ }
+
+ ret = jffs2_flash_read(c, ref_offset(fn->raw) + sizeof(*latest_node),
+ je32_to_cpu(latest_node->csize), &retlen, (char *)f->dents);
+
+ if (ret || retlen != je32_to_cpu(latest_node->csize)) {
+ if (retlen != je32_to_cpu(latest_node->csize))
+ ret = -EIO;
+ kfree(f->dents);
+ f->dents = NULL;
+ up(&f->sem);
+ jffs2_do_clear_inode(c, f);
+ return -ret;
+ }
+
+ ((char *)f->dents)[je32_to_cpu(latest_node->csize)] = '\0';
+ D1(printk(KERN_DEBUG "jffs2_do_read_inode(): symlink's target '%s' cached\n",
+ (char *)f->dents));
+ }
+
/* fall through... */
case S_IFBLK:
@@ -672,6 +732,9 @@ void jffs2_do_clear_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f)
down(&f->sem);
deleted = f->inocache && !f->inocache->nlink;
+ if (f->inocache && f->inocache->state != INO_STATE_CHECKING)
+ jffs2_set_inocache_state(c, f->inocache, INO_STATE_CLEARING);
+
if (f->metadata) {
if (deleted)
jffs2_mark_node_obsolete(c, f->metadata->raw);
@@ -680,16 +743,27 @@ void jffs2_do_clear_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f)
jffs2_kill_fragtree(&f->fragtree, deleted?c:NULL);
- fds = f->dents;
+ /* For symlink inodes we us f->dents to store the target path name */
+ if (S_ISLNK(OFNI_EDONI_2SFFJ(f)->i_mode)) {
+ if (f->dents) {
+ kfree(f->dents);
+ f->dents = NULL;
+ }
+ } else {
+ fds = f->dents;
- while(fds) {
- fd = fds;
- fds = fd->next;
- jffs2_free_full_dirent(fd);
+ while(fds) {
+ fd = fds;
+ fds = fd->next;
+ jffs2_free_full_dirent(fd);
+ }
}
- if (f->inocache && f->inocache->state != INO_STATE_CHECKING)
+ if (f->inocache && f->inocache->state != INO_STATE_CHECKING) {
jffs2_set_inocache_state(c, f->inocache, INO_STATE_CHECKEDABSENT);
+ if (f->inocache->nodes == (void *)f->inocache)
+ jffs2_del_ino_cache(c, f->inocache);
+ }
up(&f->sem);
}
diff --git a/fs/jffs2/scan.c b/fs/jffs2/scan.c
index ded53584a89..b63160f83ba 100644
--- a/fs/jffs2/scan.c
+++ b/fs/jffs2/scan.c
@@ -7,7 +7,7 @@
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: scan.c,v 1.115 2004/11/17 12:59:08 dedekind Exp $
+ * $Id: scan.c,v 1.119 2005/02/17 17:51:13 dedekind Exp $
*
*/
#include <linux/kernel.h>
@@ -19,7 +19,7 @@
#include <linux/compiler.h>
#include "nodelist.h"
-#define EMPTY_SCAN_SIZE 1024
+#define DEFAULT_EMPTY_SCAN_SIZE 1024
#define DIRTY_SPACE(x) do { typeof(x) _x = (x); \
c->free_size -= _x; c->dirty_size += _x; \
@@ -68,13 +68,21 @@ static int jffs2_scan_dirent_node(struct jffs2_sb_info *c, struct jffs2_eraseblo
static inline int min_free(struct jffs2_sb_info *c)
{
uint32_t min = 2 * sizeof(struct jffs2_raw_inode);
-#if defined CONFIG_JFFS2_FS_NAND || defined CONFIG_JFFS2_FS_NOR_ECC
+#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
if (!jffs2_can_mark_obsolete(c) && min < c->wbuf_pagesize)
return c->wbuf_pagesize;
#endif
return min;
}
+
+static inline uint32_t EMPTY_SCAN_SIZE(uint32_t sector_size) {
+ if (sector_size < DEFAULT_EMPTY_SCAN_SIZE)
+ return sector_size;
+ else
+ return DEFAULT_EMPTY_SCAN_SIZE;
+}
+
int jffs2_scan_medium(struct jffs2_sb_info *c)
{
int i, ret;
@@ -220,7 +228,7 @@ int jffs2_scan_medium(struct jffs2_sb_info *c)
c->dirty_size -= c->nextblock->dirty_size;
c->nextblock->dirty_size = 0;
}
-#if defined CONFIG_JFFS2_FS_NAND || defined CONFIG_JFFS2_FS_NOR_ECC
+#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
if (!jffs2_can_mark_obsolete(c) && c->nextblock && (c->nextblock->free_size & (c->wbuf_pagesize-1))) {
/* If we're going to start writing into a block which already
contains data, and the end of the data isn't page-aligned,
@@ -286,7 +294,7 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
uint32_t hdr_crc, buf_ofs, buf_len;
int err;
int noise = 0;
-#ifdef CONFIG_JFFS2_FS_NAND
+#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
int cleanmarkerfound = 0;
#endif
@@ -295,7 +303,7 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
D1(printk(KERN_DEBUG "jffs2_scan_eraseblock(): Scanning block at 0x%x\n", ofs));
-#ifdef CONFIG_JFFS2_FS_NAND
+#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
if (jffs2_cleanmarker_oob(c)) {
int ret = jffs2_check_nand_cleanmarker(c, jeb);
D2(printk(KERN_NOTICE "jffs_check_nand_cleanmarker returned %d\n",ret));
@@ -316,7 +324,7 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
if (!buf_size) {
buf_len = c->sector_size;
} else {
- buf_len = EMPTY_SCAN_SIZE;
+ buf_len = EMPTY_SCAN_SIZE(c->sector_size);
err = jffs2_fill_scan_buf(c, buf, buf_ofs, buf_len);
if (err)
return err;
@@ -326,11 +334,11 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
ofs = 0;
/* Scan only 4KiB of 0xFF before declaring it's empty */
- while(ofs < EMPTY_SCAN_SIZE && *(uint32_t *)(&buf[ofs]) == 0xFFFFFFFF)
+ while(ofs < EMPTY_SCAN_SIZE(c->sector_size) && *(uint32_t *)(&buf[ofs]) == 0xFFFFFFFF)
ofs += 4;
- if (ofs == EMPTY_SCAN_SIZE) {
-#ifdef CONFIG_JFFS2_FS_NAND
+ if (ofs == EMPTY_SCAN_SIZE(c->sector_size)) {
+#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
if (jffs2_cleanmarker_oob(c)) {
/* scan oob, take care of cleanmarker */
int ret = jffs2_check_oob_empty(c, jeb, cleanmarkerfound);
@@ -343,7 +351,10 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
}
#endif
D1(printk(KERN_DEBUG "Block at 0x%08x is empty (erased)\n", jeb->offset));
- return BLK_STATE_ALLFF; /* OK to erase if all blocks are like this */
+ if (c->cleanmarker_size == 0)
+ return BLK_STATE_CLEANMARKER; /* don't bother with re-erase */
+ else
+ return BLK_STATE_ALLFF; /* OK to erase if all blocks are like this */
}
if (ofs) {
D1(printk(KERN_DEBUG "Free space at %08x ends at %08x\n", jeb->offset,
@@ -422,8 +433,8 @@ scan_more:
/* If we're only checking the beginning of a block with a cleanmarker,
bail now */
if (buf_ofs == jeb->offset && jeb->used_size == PAD(c->cleanmarker_size) &&
- c->cleanmarker_size && !jeb->dirty_size && !jeb->first_node->next_in_ino) {
- D1(printk(KERN_DEBUG "%d bytes at start of block seems clean... assuming all clean\n", EMPTY_SCAN_SIZE));
+ c->cleanmarker_size && !jeb->dirty_size && !jeb->first_node->next_phys) {
+ D1(printk(KERN_DEBUG "%d bytes at start of block seems clean... assuming all clean\n", EMPTY_SCAN_SIZE(c->sector_size)));
return BLK_STATE_CLEANMARKER;
}
@@ -618,7 +629,7 @@ scan_more:
}
if ((jeb->used_size + jeb->unchecked_size) == PAD(c->cleanmarker_size) && !jeb->dirty_size
- && (!jeb->first_node || !jeb->first_node->next_in_ino) )
+ && (!jeb->first_node || !jeb->first_node->next_phys) )
return BLK_STATE_CLEANMARKER;
/* move blocks with max 4 byte dirty space to cleanlist */
diff --git a/fs/jffs2/super.c b/fs/jffs2/super.c
index 6b2a441d276..2cf14cf8b35 100644
--- a/fs/jffs2/super.c
+++ b/fs/jffs2/super.c
@@ -7,7 +7,7 @@
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: super.c,v 1.104 2004/11/23 15:37:31 gleixner Exp $
+ * $Id: super.c,v 1.106 2005/05/18 11:37:25 dedekind Exp $
*
*/
@@ -270,8 +270,6 @@ static void jffs2_put_super (struct super_block *sb)
D2(printk(KERN_DEBUG "jffs2: jffs2_put_super()\n"));
- if (!(sb->s_flags & MS_RDONLY))
- jffs2_stop_garbage_collect_thread(c);
down(&c->alloc_sem);
jffs2_flush_wbuf_pad(c);
up(&c->alloc_sem);
@@ -292,6 +290,8 @@ static void jffs2_put_super (struct super_block *sb)
static void jffs2_kill_sb(struct super_block *sb)
{
struct jffs2_sb_info *c = JFFS2_SB_INFO(sb);
+ if (!(sb->s_flags & MS_RDONLY))
+ jffs2_stop_garbage_collect_thread(c);
generic_shutdown_super(sb);
put_mtd_device(c->mtd);
kfree(c);
@@ -309,7 +309,7 @@ static int __init init_jffs2_fs(void)
int ret;
printk(KERN_INFO "JFFS2 version 2.2."
-#ifdef CONFIG_JFFS2_FS_NAND
+#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
" (NAND)"
#endif
" (C) 2001-2003 Red Hat, Inc.\n");
diff --git a/fs/jffs2/symlink.c b/fs/jffs2/symlink.c
index 7b1820d1371..65ab6b001dc 100644
--- a/fs/jffs2/symlink.c
+++ b/fs/jffs2/symlink.c
@@ -7,7 +7,7 @@
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: symlink.c,v 1.14 2004/11/16 20:36:12 dwmw2 Exp $
+ * $Id: symlink.c,v 1.16 2005/03/01 10:50:48 dedekind Exp $
*
*/
@@ -19,27 +19,45 @@
#include "nodelist.h"
static int jffs2_follow_link(struct dentry *dentry, struct nameidata *nd);
-static void jffs2_put_link(struct dentry *dentry, struct nameidata *nd);
struct inode_operations jffs2_symlink_inode_operations =
{
.readlink = generic_readlink,
.follow_link = jffs2_follow_link,
- .put_link = jffs2_put_link,
.setattr = jffs2_setattr
};
static int jffs2_follow_link(struct dentry *dentry, struct nameidata *nd)
{
- unsigned char *buf;
- buf = jffs2_getlink(JFFS2_SB_INFO(dentry->d_inode->i_sb), JFFS2_INODE_INFO(dentry->d_inode));
- nd_set_link(nd, buf);
+ struct jffs2_inode_info *f = JFFS2_INODE_INFO(dentry->d_inode);
+
+ /*
+ * We don't acquire the f->sem mutex here since the only data we
+ * use is f->dents which in case of the symlink inode points to the
+ * symlink's target path.
+ *
+ * 1. If we are here the inode has already built and f->dents has
+ * to point to the target path.
+ * 2. Nobody uses f->dents (if the inode is symlink's inode). The
+ * exception is inode freeing function which frees f->dents. But
+ * it can't be called while we are here and before VFS has
+ * stopped using our f->dents string which we provide by means of
+ * nd_set_link() call.
+ */
+
+ if (!f->dents) {
+ printk(KERN_ERR "jffs2_follow_link(): can't find symlink taerget\n");
+ return -EIO;
+ }
+ D1(printk(KERN_DEBUG "jffs2_follow_link(): target path is '%s'\n", (char *) f->dents));
+
+ nd_set_link(nd, (char *)f->dents);
+
+ /*
+ * We unlock the f->sem mutex but VFS will use the f->dents string. This is safe
+ * since the only way that may cause f->dents to be changed is iput() operation.
+ * But VFS will not use f->dents after iput() has been called.
+ */
return 0;
}
-static void jffs2_put_link(struct dentry *dentry, struct nameidata *nd)
-{
- char *s = nd_get_link(nd);
- if (!IS_ERR(s))
- kfree(s);
-}
diff --git a/fs/jffs2/wbuf.c b/fs/jffs2/wbuf.c
index c8128069ecf..996d922e503 100644
--- a/fs/jffs2/wbuf.c
+++ b/fs/jffs2/wbuf.c
@@ -9,7 +9,7 @@
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: wbuf.c,v 1.82 2004/11/20 22:08:31 dwmw2 Exp $
+ * $Id: wbuf.c,v 1.92 2005/04/05 12:51:54 dedekind Exp $
*
*/
@@ -83,7 +83,7 @@ static void jffs2_wbuf_dirties_inode(struct jffs2_sb_info *c, uint32_t ino)
struct jffs2_inodirty *new;
/* Mark the superblock dirty so that kupdated will flush... */
- OFNI_BS_2SFFJ(c)->s_dirt = 1;
+ jffs2_erase_pending_trigger(c);
if (jffs2_wbuf_pending_for_ino(c, ino))
return;
@@ -130,7 +130,10 @@ static inline void jffs2_refile_wbuf_blocks(struct jffs2_sb_info *c)
}
}
-static void jffs2_block_refile(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb)
+#define REFILE_NOTEMPTY 0
+#define REFILE_ANYWAY 1
+
+static void jffs2_block_refile(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb, int allow_empty)
{
D1(printk("About to refile bad block at %08x\n", jeb->offset));
@@ -144,7 +147,7 @@ static void jffs2_block_refile(struct jffs2_sb_info *c, struct jffs2_eraseblock
D1(printk("Refiling block at %08x to bad_used_list\n", jeb->offset));
list_add(&jeb->list, &c->bad_used_list);
} else {
- BUG();
+ BUG_ON(allow_empty == REFILE_NOTEMPTY);
/* It has to have had some nodes or we couldn't be here */
D1(printk("Refiling block at %08x to erase_pending_list\n", jeb->offset));
list_add(&jeb->list, &c->erase_pending_list);
@@ -179,7 +182,7 @@ static void jffs2_wbuf_recover(struct jffs2_sb_info *c)
jeb = &c->blocks[c->wbuf_ofs / c->sector_size];
- jffs2_block_refile(c, jeb);
+ jffs2_block_refile(c, jeb, REFILE_NOTEMPTY);
/* Find the first node to be recovered, by skipping over every
node which ends before the wbuf starts, or which is obsolete. */
@@ -264,17 +267,16 @@ static void jffs2_wbuf_recover(struct jffs2_sb_info *c)
ret = jffs2_reserve_space_gc(c, end-start, &ofs, &len);
if (ret) {
printk(KERN_WARNING "Failed to allocate space for wbuf recovery. Data loss ensues.\n");
- if (buf)
- kfree(buf);
+ kfree(buf);
return;
}
if (end-start >= c->wbuf_pagesize) {
- /* Need to do another write immediately. This, btw,
- means that we'll be writing from 'buf' and not from
- the wbuf. Since if we're writing from the wbuf there
- won't be more than a wbuf full of data, now will
- there? :) */
-
+ /* Need to do another write immediately, but it's possible
+ that this is just because the wbuf itself is completely
+ full, and there's nothing earlier read back from the
+ flash. Hence 'buf' isn't necessarily what we're writing
+ from. */
+ unsigned char *rewrite_buf = buf?:c->wbuf;
uint32_t towrite = (end-start) - ((end-start)%c->wbuf_pagesize);
D1(printk(KERN_DEBUG "Write 0x%x bytes at 0x%08x in wbuf recover\n",
@@ -292,9 +294,9 @@ static void jffs2_wbuf_recover(struct jffs2_sb_info *c)
#endif
if (jffs2_cleanmarker_oob(c))
ret = c->mtd->write_ecc(c->mtd, ofs, towrite, &retlen,
- buf, NULL, c->oobinfo);
+ rewrite_buf, NULL, c->oobinfo);
else
- ret = c->mtd->write(c->mtd, ofs, towrite, &retlen, buf);
+ ret = c->mtd->write(c->mtd, ofs, towrite, &retlen, rewrite_buf);
if (ret || retlen != towrite) {
/* Argh. We tried. Really we did. */
@@ -321,10 +323,10 @@ static void jffs2_wbuf_recover(struct jffs2_sb_info *c)
c->wbuf_len = (end - start) - towrite;
c->wbuf_ofs = ofs + towrite;
- memcpy(c->wbuf, buf + towrite, c->wbuf_len);
+ memmove(c->wbuf, rewrite_buf + towrite, c->wbuf_len);
/* Don't muck about with c->wbuf_inodes. False positives are harmless. */
-
- kfree(buf);
+ if (buf)
+ kfree(buf);
} else {
/* OK, now we're left with the dregs in whichever buffer we're using */
if (buf) {
@@ -413,9 +415,9 @@ static int __jffs2_flush_wbuf(struct jffs2_sb_info *c, int pad)
int ret;
size_t retlen;
- /* Nothing to do if not NAND flash. In particular, we shouldn't
+ /* Nothing to do if not write-buffering the flash. In particular, we shouldn't
del_timer() the timer we never initialised. */
- if (jffs2_can_mark_obsolete(c))
+ if (!jffs2_is_writebuffered(c))
return 0;
if (!down_trylock(&c->alloc_sem)) {
@@ -424,7 +426,7 @@ static int __jffs2_flush_wbuf(struct jffs2_sb_info *c, int pad)
BUG();
}
- if(!c->wbuf || !c->wbuf_len)
+ if (!c->wbuf_len) /* already checked c->wbuf above */
return 0;
/* claim remaining space on the page
@@ -433,7 +435,7 @@ static int __jffs2_flush_wbuf(struct jffs2_sb_info *c, int pad)
if we have a switch to next page, we will not have
enough remaining space for this.
*/
- if (pad) {
+ if (pad && !jffs2_dataflash(c)) {
c->wbuf_len = PAD(c->wbuf_len);
/* Pad with JFFS2_DIRTY_BITMASK initially. this helps out ECC'd NOR
@@ -484,7 +486,7 @@ static int __jffs2_flush_wbuf(struct jffs2_sb_info *c, int pad)
spin_lock(&c->erase_completion_lock);
/* Adjust free size of the block if we padded. */
- if (pad) {
+ if (pad && !jffs2_dataflash(c)) {
struct jffs2_eraseblock *jeb;
jeb = &c->blocks[c->wbuf_ofs / c->sector_size];
@@ -532,6 +534,9 @@ int jffs2_flush_wbuf_gc(struct jffs2_sb_info *c, uint32_t ino)
D1(printk(KERN_DEBUG "jffs2_flush_wbuf_gc() called for ino #%u...\n", ino));
+ if (!c->wbuf)
+ return 0;
+
down(&c->alloc_sem);
if (!jffs2_wbuf_pending_for_ino(c, ino)) {
D1(printk(KERN_DEBUG "Ino #%d not pending in wbuf. Returning\n", ino));
@@ -547,6 +552,10 @@ int jffs2_flush_wbuf_gc(struct jffs2_sb_info *c, uint32_t ino)
D1(printk(KERN_DEBUG "jffs2_flush_wbuf_gc() padding. Not finished checking\n"));
down_write(&c->wbuf_sem);
ret = __jffs2_flush_wbuf(c, PAD_ACCOUNTING);
+ /* retry flushing wbuf in case jffs2_wbuf_recover
+ left some data in the wbuf */
+ if (ret)
+ ret = __jffs2_flush_wbuf(c, PAD_ACCOUNTING);
up_write(&c->wbuf_sem);
} else while (old_wbuf_len &&
old_wbuf_ofs == c->wbuf_ofs) {
@@ -561,6 +570,10 @@ int jffs2_flush_wbuf_gc(struct jffs2_sb_info *c, uint32_t ino)
down(&c->alloc_sem);
down_write(&c->wbuf_sem);
ret = __jffs2_flush_wbuf(c, PAD_ACCOUNTING);
+ /* retry flushing wbuf in case jffs2_wbuf_recover
+ left some data in the wbuf */
+ if (ret)
+ ret = __jffs2_flush_wbuf(c, PAD_ACCOUNTING);
up_write(&c->wbuf_sem);
break;
}
@@ -578,15 +591,27 @@ int jffs2_flush_wbuf_pad(struct jffs2_sb_info *c)
{
int ret;
+ if (!c->wbuf)
+ return 0;
+
down_write(&c->wbuf_sem);
ret = __jffs2_flush_wbuf(c, PAD_NOACCOUNT);
+ /* retry - maybe wbuf recover left some data in wbuf. */
+ if (ret)
+ ret = __jffs2_flush_wbuf(c, PAD_NOACCOUNT);
up_write(&c->wbuf_sem);
return ret;
}
+#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
+#define PAGE_DIV(x) ( ((unsigned long)(x) / (unsigned long)(c->wbuf_pagesize)) * (unsigned long)(c->wbuf_pagesize) )
+#define PAGE_MOD(x) ( (unsigned long)(x) % (unsigned long)(c->wbuf_pagesize) )
+#else
#define PAGE_DIV(x) ( (x) & (~(c->wbuf_pagesize - 1)) )
#define PAGE_MOD(x) ( (x) & (c->wbuf_pagesize - 1) )
+#endif
+
int jffs2_flash_writev(struct jffs2_sb_info *c, const struct kvec *invecs, unsigned long count, loff_t to, size_t *retlen, uint32_t ino)
{
struct kvec outvecs[3];
@@ -601,7 +626,7 @@ int jffs2_flash_writev(struct jffs2_sb_info *c, const struct kvec *invecs, unsig
uint32_t outvec_to = to;
/* If not NAND flash, don't bother */
- if (!c->wbuf)
+ if (!jffs2_is_writebuffered(c))
return jffs2_flash_direct_writev(c, invecs, count, to, retlen);
down_write(&c->wbuf_sem);
@@ -630,7 +655,7 @@ int jffs2_flash_writev(struct jffs2_sb_info *c, const struct kvec *invecs, unsig
erase block. Anything else, and you die.
New block starts at xxx000c (0-b = block header)
*/
- if ( (to & ~(c->sector_size-1)) != (c->wbuf_ofs & ~(c->sector_size-1)) ) {
+ if (SECTOR_ADDR(to) != SECTOR_ADDR(c->wbuf_ofs)) {
/* It's a write to a new block */
if (c->wbuf_len) {
D1(printk(KERN_DEBUG "jffs2_flash_writev() to 0x%lx causes flush of wbuf at 0x%08x\n", (unsigned long)to, c->wbuf_ofs));
@@ -762,9 +787,18 @@ int jffs2_flash_writev(struct jffs2_sb_info *c, const struct kvec *invecs, unsig
if (ret < 0 || wbuf_retlen != PAGE_DIV(totlen)) {
/* At this point we have no problem,
- c->wbuf is empty.
+ c->wbuf is empty. However refile nextblock to avoid
+ writing again to same address.
*/
- *retlen = donelen;
+ struct jffs2_eraseblock *jeb;
+
+ spin_lock(&c->erase_completion_lock);
+
+ jeb = &c->blocks[outvec_to / c->sector_size];
+ jffs2_block_refile(c, jeb, REFILE_ANYWAY);
+
+ *retlen = 0;
+ spin_unlock(&c->erase_completion_lock);
goto exit;
}
@@ -819,7 +853,7 @@ int jffs2_flash_write(struct jffs2_sb_info *c, loff_t ofs, size_t len, size_t *r
{
struct kvec vecs[1];
- if (jffs2_can_mark_obsolete(c))
+ if (!jffs2_is_writebuffered(c))
return c->mtd->write(c->mtd, ofs, len, retlen, buf);
vecs[0].iov_base = (unsigned char *) buf;
@@ -835,39 +869,38 @@ int jffs2_flash_read(struct jffs2_sb_info *c, loff_t ofs, size_t len, size_t *re
loff_t orbf = 0, owbf = 0, lwbf = 0;
int ret;
- /* Read flash */
- if (!jffs2_can_mark_obsolete(c)) {
- down_read(&c->wbuf_sem);
-
- if (jffs2_cleanmarker_oob(c))
- ret = c->mtd->read_ecc(c->mtd, ofs, len, retlen, buf, NULL, c->oobinfo);
- else
- ret = c->mtd->read(c->mtd, ofs, len, retlen, buf);
-
- if ( (ret == -EBADMSG) && (*retlen == len) ) {
- printk(KERN_WARNING "mtd->read(0x%zx bytes from 0x%llx) returned ECC error\n",
- len, ofs);
- /*
- * We have the raw data without ECC correction in the buffer, maybe
- * we are lucky and all data or parts are correct. We check the node.
- * If data are corrupted node check will sort it out.
- * We keep this block, it will fail on write or erase and the we
- * mark it bad. Or should we do that now? But we should give him a chance.
- * Maybe we had a system crash or power loss before the ecc write or
- * a erase was completed.
- * So we return success. :)
- */
- ret = 0;
- }
- } else
+ if (!jffs2_is_writebuffered(c))
return c->mtd->read(c->mtd, ofs, len, retlen, buf);
+ /* Read flash */
+ down_read(&c->wbuf_sem);
+ if (jffs2_cleanmarker_oob(c))
+ ret = c->mtd->read_ecc(c->mtd, ofs, len, retlen, buf, NULL, c->oobinfo);
+ else
+ ret = c->mtd->read(c->mtd, ofs, len, retlen, buf);
+
+ if ( (ret == -EBADMSG) && (*retlen == len) ) {
+ printk(KERN_WARNING "mtd->read(0x%zx bytes from 0x%llx) returned ECC error\n",
+ len, ofs);
+ /*
+ * We have the raw data without ECC correction in the buffer, maybe
+ * we are lucky and all data or parts are correct. We check the node.
+ * If data are corrupted node check will sort it out.
+ * We keep this block, it will fail on write or erase and the we
+ * mark it bad. Or should we do that now? But we should give him a chance.
+ * Maybe we had a system crash or power loss before the ecc write or
+ * a erase was completed.
+ * So we return success. :)
+ */
+ ret = 0;
+ }
+
/* if no writebuffer available or write buffer empty, return */
if (!c->wbuf_pagesize || !c->wbuf_len)
goto exit;
/* if we read in a different block, return */
- if ( (ofs & ~(c->sector_size-1)) != (c->wbuf_ofs & ~(c->sector_size-1)) )
+ if (SECTOR_ADDR(ofs) != SECTOR_ADDR(c->wbuf_ofs))
goto exit;
if (ofs >= c->wbuf_ofs) {
@@ -1161,7 +1194,27 @@ void jffs2_nand_flash_cleanup(struct jffs2_sb_info *c)
kfree(c->wbuf);
}
-#ifdef CONFIG_JFFS2_FS_NOR_ECC
+int jffs2_dataflash_setup(struct jffs2_sb_info *c) {
+ c->cleanmarker_size = 0; /* No cleanmarkers needed */
+
+ /* Initialize write buffer */
+ init_rwsem(&c->wbuf_sem);
+ c->wbuf_pagesize = c->sector_size;
+ c->wbuf_ofs = 0xFFFFFFFF;
+
+ c->wbuf = kmalloc(c->wbuf_pagesize, GFP_KERNEL);
+ if (!c->wbuf)
+ return -ENOMEM;
+
+ printk(KERN_INFO "JFFS2 write-buffering enabled (%i)\n", c->wbuf_pagesize);
+
+ return 0;
+}
+
+void jffs2_dataflash_cleanup(struct jffs2_sb_info *c) {
+ kfree(c->wbuf);
+}
+
int jffs2_nor_ecc_flash_setup(struct jffs2_sb_info *c) {
/* Cleanmarker is actually larger on the flashes */
c->cleanmarker_size = 16;
@@ -1181,4 +1234,3 @@ int jffs2_nor_ecc_flash_setup(struct jffs2_sb_info *c) {
void jffs2_nor_ecc_flash_cleanup(struct jffs2_sb_info *c) {
kfree(c->wbuf);
}
-#endif
diff --git a/fs/jffs2/write.c b/fs/jffs2/write.c
index 80a5db54262..69100615d9a 100644
--- a/fs/jffs2/write.c
+++ b/fs/jffs2/write.c
@@ -7,7 +7,7 @@
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: write.c,v 1.87 2004/11/16 20:36:12 dwmw2 Exp $
+ * $Id: write.c,v 1.92 2005/04/13 13:22:35 dwmw2 Exp $
*
*/
@@ -35,13 +35,12 @@ int jffs2_do_new_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, uint
f->inocache = ic;
f->inocache->nlink = 1;
f->inocache->nodes = (struct jffs2_raw_node_ref *)f->inocache;
- f->inocache->ino = ++c->highest_ino;
f->inocache->state = INO_STATE_PRESENT;
- ri->ino = cpu_to_je32(f->inocache->ino);
- D1(printk(KERN_DEBUG "jffs2_do_new_inode(): Assigned ino# %d\n", f->inocache->ino));
jffs2_add_ino_cache(c, f->inocache);
+ D1(printk(KERN_DEBUG "jffs2_do_new_inode(): Assigned ino# %d\n", f->inocache->ino));
+ ri->ino = cpu_to_je32(f->inocache->ino);
ri->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
ri->nodetype = cpu_to_je16(JFFS2_NODETYPE_INODE);
@@ -136,6 +135,15 @@ struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2
raw->__totlen = PAD(sizeof(*ri)+datalen);
raw->next_phys = NULL;
+ if ((alloc_mode!=ALLOC_GC) && (je32_to_cpu(ri->version) < f->highest_version)) {
+ BUG_ON(!retried);
+ D1(printk(KERN_DEBUG "jffs2_write_dnode : dnode_version %d, "
+ "highest version %d -> updating dnode\n",
+ je32_to_cpu(ri->version), f->highest_version));
+ ri->version = cpu_to_je32(++f->highest_version);
+ ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8));
+ }
+
ret = jffs2_flash_writev(c, vecs, cnt, flash_ofs, &retlen,
(alloc_mode==ALLOC_GC)?0:f->inocache->ino);
@@ -280,6 +288,16 @@ struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jff
raw->__totlen = PAD(sizeof(*rd)+namelen);
raw->next_phys = NULL;
+ if ((alloc_mode!=ALLOC_GC) && (je32_to_cpu(rd->version) < f->highest_version)) {
+ BUG_ON(!retried);
+ D1(printk(KERN_DEBUG "jffs2_write_dirent : dirent_version %d, "
+ "highest version %d -> updating dirent\n",
+ je32_to_cpu(rd->version), f->highest_version));
+ rd->version = cpu_to_je32(++f->highest_version);
+ fd->version = je32_to_cpu(rd->version);
+ rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8));
+ }
+
ret = jffs2_flash_writev(c, vecs, 2, flash_ofs, &retlen,
(alloc_mode==ALLOC_GC)?0:je32_to_cpu(rd->pino));
if (ret || (retlen != sizeof(*rd) + namelen)) {
@@ -625,20 +643,23 @@ int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f,
down(&dead_f->sem);
- while (dead_f->dents) {
- /* There can be only deleted ones */
- fd = dead_f->dents;
-
- dead_f->dents = fd->next;
-
- if (fd->ino) {
- printk(KERN_WARNING "Deleting inode #%u with active dentry \"%s\"->ino #%u\n",
- dead_f->inocache->ino, fd->name, fd->ino);
- } else {
- D1(printk(KERN_DEBUG "Removing deletion dirent for \"%s\" from dir ino #%u\n", fd->name, dead_f->inocache->ino));
+ if (S_ISDIR(OFNI_EDONI_2SFFJ(dead_f)->i_mode)) {
+ while (dead_f->dents) {
+ /* There can be only deleted ones */
+ fd = dead_f->dents;
+
+ dead_f->dents = fd->next;
+
+ if (fd->ino) {
+ printk(KERN_WARNING "Deleting inode #%u with active dentry \"%s\"->ino #%u\n",
+ dead_f->inocache->ino, fd->name, fd->ino);
+ } else {
+ D1(printk(KERN_DEBUG "Removing deletion dirent for \"%s\" from dir ino #%u\n",
+ fd->name, dead_f->inocache->ino));
+ }
+ jffs2_mark_node_obsolete(c, fd->raw);
+ jffs2_free_full_dirent(fd);
}
- jffs2_mark_node_obsolete(c, fd->raw);
- jffs2_free_full_dirent(fd);
}
dead_f->inocache->nlink--;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 00:59:48 +0000