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generic-2.6/2.6.28: sync yaffs code with the current CVS version 

SVN-Revision: 14158
This commit is contained in:
Gabor Juhos 2009-01-23 17:24:20 +00:00
parent 0c2e187f54
commit d99ccd5b15
4 changed files with 8237 additions and 281 deletions
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8237
target/linux/generic-2.6/patches-2.6.28/511-yaffs-cvs-2009-01-23.patch Normal file
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92
target/linux/generic-2.6/patches-2.6.28/512-yaffs_2.6.25_fix.patch
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@ -1,92 +0,0 @@
--- a/fs/yaffs2/yaffs_fs.c
+++ b/fs/yaffs2/yaffs_fs.c
@@ -181,7 +181,13 @@ static int yaffs_statfs(struct super_blo
#else
static int yaffs_statfs(struct super_block *sb, struct statfs *buf);
#endif
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,25))
+static struct inode *yaffs_iget(struct super_block *sb, unsigned long ino);
+#else
static void yaffs_read_inode(struct inode *inode);
+#endif
+
static void yaffs_put_inode(struct inode *inode);
static void yaffs_delete_inode(struct inode *);
@@ -284,7 +290,9 @@ static struct file_operations yaffs_dir_
static struct super_operations yaffs_super_ops = {
.statfs = yaffs_statfs,
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25))
.read_inode = yaffs_read_inode,
+#endif
.put_inode = yaffs_put_inode,
.put_super = yaffs_put_super,
.delete_inode = yaffs_delete_inode,
@@ -844,11 +852,17 @@ struct inode *yaffs_get_inode(struct sup
T(YAFFS_TRACE_OS,
(KERN_DEBUG "yaffs_get_inode for object %d\n", obj->objectId));
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,25))
+ inode = yaffs_iget(sb, obj->objectId);
+ if (IS_ERR(inode))
+ return NULL;
+#else
inode = iget(sb, obj->objectId);
/* NB Side effect: iget calls back to yaffs_read_inode(). */
/* iget also increments the inode's i_count */
/* NB You can't be holding grossLock or deadlock will happen! */
+#endif
return inode;
}
@@ -1427,6 +1441,39 @@ static int yaffs_sync_fs(struct super_bl
}
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,25))
+static struct inode *yaffs_iget(struct super_block *sb, unsigned long ino)
+{
+ yaffs_Object *obj;
+ yaffs_Device *dev = yaffs_SuperToDevice(sb);
+ struct inode *inode;
+
+ T(YAFFS_TRACE_OS,
+ (KERN_DEBUG "yaffs_iget for %lu\n", ino));
+
+ inode = iget_locked(sb, ino);
+ if (!inode)
+ return ERR_PTR(-ENOMEM);
+ if (!(inode->i_state & I_NEW))
+ return inode;
+
+ /* NB This is called as a side effect of other functions, but
+ * we had to release the lock to prevent deadlocks, so
+ * need to lock again.
+ */
+
+ yaffs_GrossLock(dev);
+
+ obj = yaffs_FindObjectByNumber(dev, inode->i_ino);
+
+ yaffs_FillInodeFromObject(inode, obj);
+
+ yaffs_GrossUnlock(dev);
+
+ unlock_new_inode(inode);
+ return inode;
+}
+#else
static void yaffs_read_inode(struct inode *inode)
{
/* NB This is called as a side effect of other functions, but
@@ -1448,6 +1495,7 @@ static void yaffs_read_inode(struct inod
yaffs_GrossUnlock(dev);
}
+#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,25)) */
static LIST_HEAD(yaffs_dev_list);

69
target/linux/generic-2.6/patches-2.6.28/513-yaffs_2.6.26_fix.patch
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@ -1,69 +0,0 @@
--- a/fs/yaffs2/yaffs_fs.c
+++ b/fs/yaffs2/yaffs_fs.c
@@ -76,6 +76,12 @@ extern const char *yaffs_guts_c_version;
#endif
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,26))
+#define YPROC_ROOT &proc_root
+#else
+#define YPROC_ROOT NULL
+#endif
+
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
#define WRITE_SIZE_STR "writesize"
#define WRITE_SIZE(mtd) (mtd)->writesize
@@ -189,7 +195,9 @@ static void yaffs_read_inode(struct inod
#endif
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,26))
static void yaffs_put_inode(struct inode *inode);
+#endif
static void yaffs_delete_inode(struct inode *);
static void yaffs_clear_inode(struct inode *);
@@ -293,7 +301,9 @@ static struct super_operations yaffs_sup
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25))
.read_inode = yaffs_read_inode,
#endif
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,26))
.put_inode = yaffs_put_inode,
+#endif
.put_super = yaffs_put_super,
.delete_inode = yaffs_delete_inode,
.clear_inode = yaffs_clear_inode,
@@ -437,6 +447,7 @@ static struct dentry *yaffs_lookup(struc
}
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,26))
/* For now put inode is just for debugging
* Put inode is called when the inode **structure** is put.
*/
@@ -447,6 +458,7 @@ static void yaffs_put_inode(struct inode
atomic_read(&inode->i_count)));
}
+#endif
/* clear is called to tell the fs to release any per-inode data it holds */
static void yaffs_clear_inode(struct inode *inode)
@@ -2279,7 +2291,7 @@ static int __init init_yaffs_fs(void)
/* Install the proc_fs entry */
my_proc_entry = create_proc_entry("yaffs",
S_IRUGO | S_IFREG,
- &proc_root);
+ YPROC_ROOT);
if (my_proc_entry) {
my_proc_entry->write_proc = yaffs_proc_write;
@@ -2325,7 +2337,7 @@ static void __exit exit_yaffs_fs(void)
T(YAFFS_TRACE_ALWAYS, ("yaffs " __DATE__ " " __TIME__
" removing. \n"));
- remove_proc_entry("yaffs", &proc_root);
+ remove_proc_entry("yaffs", YPROC_ROOT);
fsinst = fs_to_install;

120
target/linux/generic-2.6/patches-2.6.28/514-yaffs_2.6.28_fixes.patch
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@ -1,120 +0,0 @@
--- a/fs/yaffs2/yaffs_fs.c
+++ b/fs/yaffs2/yaffs_fs.c
@@ -207,10 +207,20 @@ static int yaffs_writepage(struct page *
#else
static int yaffs_writepage(struct page *page);
#endif
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28))
+static int yaffs_write_begin(struct file *f, struct address_space *mapping,
+ loff_t pos, unsigned len, unsigned flags,
+ struct page **pagep, void **fsdata);
+static int yaffs_write_end(struct file *f, struct address_space *mapping,
+ loff_t pos, unsigned len, unsigned copied,
+ struct page *pg, void *fsdata);
+#else
static int yaffs_prepare_write(struct file *f, struct page *pg,
unsigned offset, unsigned to);
static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset,
unsigned to);
+#endif
static int yaffs_readlink(struct dentry *dentry, char __user * buffer,
int buflen);
@@ -223,8 +233,13 @@ static int yaffs_follow_link(struct dent
static struct address_space_operations yaffs_file_address_operations = {
.readpage = yaffs_readpage,
.writepage = yaffs_writepage,
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28))
+ .write_begin = yaffs_write_begin,
+ .write_end = yaffs_write_end,
+#else
.prepare_write = yaffs_prepare_write,
.commit_write = yaffs_commit_write,
+#endif
};
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,22))
@@ -687,6 +702,74 @@ static int yaffs_writepage(struct page *
return (nWritten == nBytes) ? 0 : -ENOSPC;
}
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28))
+static int yaffs_write_begin(struct file *f, struct address_space *mapping,
+ loff_t pos, unsigned len, unsigned flags,
+ struct page **pagep, void **fsdata)
+{
+ struct page *pg;
+ pgoff_t index = pos >> PAGE_CACHE_SHIFT;
+ int ret = 0;
+
+ pg = __grab_cache_page(mapping, index);
+ if (!pg)
+ return -ENOMEM;
+
+ *pagep = pg;
+
+ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_write_begin\n"));
+ if (!Page_Uptodate(pg)) {
+ ret = yaffs_readpage_nolock(f, pg);
+ if (ret)
+ goto err_unlock;
+ }
+
+ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_write_begin\n"));
+ return 0;
+
+ err_unlock:
+ unlock_page(pg);
+ page_cache_release(pg);
+ return ret;
+}
+
+static int yaffs_write_end(struct file *f, struct address_space *mapping,
+ loff_t pos, unsigned len, unsigned copied,
+ struct page *pg, void *fsdata)
+{
+ void *addr = page_address(pg) + (pos & (PAGE_CACHE_SIZE - 1));
+ loff_t pos2;
+ int nBytes = copied;
+ int nWritten;
+
+ T(YAFFS_TRACE_OS,
+ (KERN_DEBUG "yaffs_write_end addr %x pos %x nBytes %d\n", (unsigned)addr,
+ (unsigned)pos, nBytes));
+
+ pos2 = pos;
+ nWritten = yaffs_file_write(f, addr, nBytes, &pos2);
+
+ if (nWritten != nBytes) {
+ T(YAFFS_TRACE_OS,
+ (KERN_DEBUG
+ "yaffs_write_end not same size nWritten %d nBytes %d\n",
+ nWritten, nBytes));
+ SetPageError(pg);
+ ClearPageUptodate(pg);
+ } else {
+ SetPageUptodate(pg);
+ }
+
+ T(YAFFS_TRACE_OS,
+ (KERN_DEBUG "yaffs_write_end returning %d\n",
+ nWritten == nBytes ? nWritten : 0));
+
+ unlock_page(pg);
+ page_cache_release(pg);
+
+ return (nWritten == nBytes) ? nWritten : 0;
+}
+#else
static int yaffs_prepare_write(struct file *f, struct page *pg,
unsigned offset, unsigned to)
{
@@ -735,6 +818,7 @@ static int yaffs_commit_write(struct fil
return nWritten == nBytes ? 0 : nWritten;
}
+#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28)) */
static void yaffs_FillInodeFromObject(struct inode *inode, yaffs_Object * obj)
{