#define YAFFS_COMPILE_EXPORTFS
#endif
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,35))
+#define YAFFS_USE_SETATTR_COPY
+#define YAFFS_USE_TRUNCATE_SETSIZE
+#endif
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,35))
+#define YAFFS_HAS_EVICT_INODE
+#endif
+
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,13))
#define YAFFS_NEW_FOLLOW_LINK 1
#else
unsigned int yaffs_wr_attempts = YAFFS_WR_ATTEMPTS;
unsigned int yaffs_auto_checkpoint = 1;
unsigned int yaffs_gc_control = 1;
+unsigned int yaffs_bg_enable = 1;
/* Module Parameters */
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
module_param(yaffs_wr_attempts, uint, 0644);
module_param(yaffs_auto_checkpoint, uint, 0644);
module_param(yaffs_gc_control, uint, 0644);
+module_param(yaffs_bg_enable, uint, 0644);
#else
MODULE_PARM(yaffs_traceMask, "i");
MODULE_PARM(yaffs_wr_attempts, "i");
static void yaffs_put_inode(struct inode *inode);
#endif
+#ifdef YAFFS_HAS_EVICT_INODE
+static void yaffs_evict_inode(struct inode *);
+#else
static void yaffs_delete_inode(struct inode *);
static void yaffs_clear_inode(struct inode *);
+#endif
static int yaffs_readpage(struct file *file, struct page *page);
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
static loff_t yaffs_dir_llseek(struct file *file, loff_t offset, int origin);
+static int yaffs_vfs_setattr(struct inode *, struct iattr *);
+
+
static struct address_space_operations yaffs_file_address_operations = {
.readpage = yaffs_readpage,
.writepage = yaffs_writepage,
#endif
};
+
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 22))
static const struct file_operations yaffs_file_operations = {
.read = do_sync_read,
.put_inode = yaffs_put_inode,
#endif
.put_super = yaffs_put_super,
+#ifdef YAFFS_HAS_EVICT_INODE
+ .evict_inode = yaffs_evict_inode,
+#else
.delete_inode = yaffs_delete_inode,
.clear_inode = yaffs_clear_inode,
+#endif
.sync_fs = yaffs_sync_fs,
.write_super = yaffs_write_super,
};
+
+static int yaffs_vfs_setattr(struct inode *inode, struct iattr *attr)
+{
+#ifdef YAFFS_USE_SETATTR_COPY
+ setattr_copy(inode,attr);
+ return 0;
+#else
+ return inode_setattr(inode, attr);
+#endif
+
+}
+
+static int yaffs_vfs_setsize(struct inode *inode, loff_t newsize)
+{
+#ifdef YAFFS_USE_TRUNCATE_SETSIZE
+ truncate_setsize(inode,newsize);
+ return 0;
+#else
+ return simple_setsize(inode, newsize);
+#endif
+
+}
+
static unsigned yaffs_gc_control_callback(yaffs_Device *dev)
{
return yaffs_gc_control;
}
#endif
-/* clear is called to tell the fs to release any per-inode data it holds */
-static void yaffs_clear_inode(struct inode *inode)
+
+static void yaffs_UnstitchObject(struct inode *inode, yaffs_Object *obj)
+{
+ /* Clear the association between the inode and
+ * the yaffs_Object.
+ */
+ obj->myInode = NULL;
+ yaffs_InodeToObjectLV(inode) = NULL;
+
+ /* If the object freeing was deferred, then the real
+ * free happens now.
+ * This should fix the inode inconsistency problem.
+ */
+ yaffs_HandleDeferedFree(obj);
+}
+
+#ifdef YAFFS_HAS_EVICT_INODE
+/* yaffs_evict_inode combines into one operation what was previously done in
+ * yaffs_clear_inode() and yaffs_delete_inode()
+ *
+ */
+static void yaffs_evict_inode( struct inode *inode)
{
yaffs_Object *obj;
yaffs_Device *dev;
+ int deleteme = 0;
obj = yaffs_InodeToObject(inode);
T(YAFFS_TRACE_OS,
- (TSTR("yaffs_clear_inode: ino %d, count %d %s\n"), (int)inode->i_ino,
+ (TSTR("yaffs_evict_inode: ino %d, count %d %s\n"), (int)inode->i_ino,
atomic_read(&inode->i_count),
obj ? "object exists" : "null object"));
+ if (!inode->i_nlink && !is_bad_inode(inode))
+ deleteme = 1;
+ truncate_inode_pages(&inode->i_data,0);
+ end_writeback(inode);
+
+ if(deleteme && obj){
+ dev = obj->myDev;
+ yaffs_GrossLock(dev);
+ yaffs_DeleteObject(obj);
+ yaffs_GrossUnlock(dev);
+ }
if (obj) {
dev = obj->myDev;
yaffs_GrossLock(dev);
+ yaffs_UnstitchObject(inode,obj);
+ yaffs_GrossUnlock(dev);
+ }
- /* Clear the association between the inode and
- * the yaffs_Object.
- */
- obj->myInode = NULL;
- yaffs_InodeToObjectLV(inode) = NULL;
- /* If the object freeing was deferred, then the real
- * free happens now.
- * This should fix the inode inconsistency problem.
- */
+}
+#else
- yaffs_HandleDeferedFree(obj);
+/* clear is called to tell the fs to release any per-inode data it holds.
+ * The object might still exist on disk and is just being thrown out of the cache
+ * or else the object has actually been deleted and we're being called via
+ * the chain
+ * yaffs_delete_inode() -> clear_inode()->yaffs_clear_inode()
+ */
+static void yaffs_clear_inode(struct inode *inode)
+{
+ yaffs_Object *obj;
+ yaffs_Device *dev;
+
+ obj = yaffs_InodeToObject(inode);
+
+ T(YAFFS_TRACE_OS,
+ (TSTR("yaffs_clear_inode: ino %d, count %d %s\n"), (int)inode->i_ino,
+ atomic_read(&inode->i_count),
+ obj ? "object exists" : "null object"));
+
+ if (obj) {
+ dev = obj->myDev;
+ yaffs_GrossLock(dev);
+ yaffs_UnstitchObject(inode,obj);
yaffs_GrossUnlock(dev);
}
#endif
clear_inode(inode);
}
+#endif
+
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
static int yaffs_file_flush(struct file *file, fl_owner_t id)
if (error == 0) {
int result;
if (!error){
- error = inode_setattr(inode, attr);
+ error = yaffs_vfs_setattr(inode, attr);
T(YAFFS_TRACE_OS,(TSTR("inode_setattr called\n")));
- if (attr->ia_valid & ATTR_SIZE)
- truncate_inode_pages(&inode->i_data,attr->ia_size);
+ if (attr->ia_valid & ATTR_SIZE){
+ yaffs_vfs_setsize(inode,attr->ia_size);
+ inode->i_blocks = (inode->i_size + 511) >> 9;
+ }
}
dev = yaffs_InodeToObject(inode)->myDev;
if (attr->ia_valid & ATTR_SIZE){
yaffs_Object *obj = yaffs_InodeToObject(inode);
T(YAFFS_TRACE_OS,
- (TSTR("yaffs_getxattr of object %d\n"),
- obj->objectId));
-
+ (TSTR("yaffs_getxattr \"%s\" from object %d\n"),
+ name, obj->objectId));
if (error == 0) {
dev = obj->myDev;
now = jiffies;
- if(time_after(now, next_dir_update)){
+ if(time_after(now, next_dir_update) && yaffs_bg_enable){
yaffs_UpdateDirtyDirectories(dev);
next_dir_update = now + HZ;
}
- if(time_after(now,next_gc)){
+ if(time_after(now,next_gc) && yaffs_bg_enable){
if(!dev->isCheckpointed){
urgency = yaffs_bg_gc_urgency(dev);
gcResult = yaffs_BackgroundGarbageCollect(dev, urgency);
buf += sprintf(buf, "allGCs............. %u\n", dev->allGCs);
buf += sprintf(buf, "passiveGCs......... %u\n", dev->passiveGCs);
buf += sprintf(buf, "oldestDirtyGCs..... %u\n", dev->oldestDirtyGCs);
+ buf += sprintf(buf, "nGCBlocks.......... %u\n", dev->nGCBlocks);
buf += sprintf(buf, "backgroundGCs...... %u\n", dev->backgroundGCs);
buf += sprintf(buf, "nRetriedWrites..... %u\n", dev->nRetriedWrites);
buf += sprintf(buf, "nRetireBlocks...... %u\n", dev->nRetiredBlocks);
projects / yaffs2.git / blobdiff