From 00057626901725d0b64045f6823d67edae691e00 Mon Sep 17 00:00:00 2001
From: Gabor Juhos <juhosg@openwrt.org>
Date: Thu, 1 Nov 2012 11:07:23 +0000
Subject: [PATCH] generic: make yaffs work on 3.6
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
SVN-Revision: 34054
---
...add-underscore-to-mtd-internal-names.patch | 72 +++++++
.../510-yaffs-3.4-use-d_make_root.patch | 14 ++
.../511-yaffs-3.5-use-clear_inode.patch | 15 ++
.../512-yaffs-3.6-fix-dir_inode-ops.patch | 60 ++++++
...-delayed-work-instead-of-write_super.patch | 180 ++++++++++++++++++
5 files changed, 341 insertions(+)
create mode 100644 target/linux/generic/patches-3.6/509-yaffs-3.4-add-underscore-to-mtd-internal-names.patch
create mode 100644 target/linux/generic/patches-3.6/510-yaffs-3.4-use-d_make_root.patch
create mode 100644 target/linux/generic/patches-3.6/511-yaffs-3.5-use-clear_inode.patch
create mode 100644 target/linux/generic/patches-3.6/512-yaffs-3.6-fix-dir_inode-ops.patch
create mode 100644 target/linux/generic/patches-3.6/513-yaffs-3.6-use-delayed-work-instead-of-write_super.patch
diff --git a/target/linux/generic/patches-3.6/509-yaffs-3.4-add-underscore-to-mtd-internal-names.patch b/target/linux/generic/patches-3.6/509-yaffs-3.4-add-underscore-to-mtd-internal-names.patch
new file mode 100644
index 0000000000..14f342da80
--- /dev/null
+++ b/target/linux/generic/patches-3.6/509-yaffs-3.4-add-underscore-to-mtd-internal-names.patch
@@ -0,0 +1,72 @@
+--- a/fs/yaffs2/yaffs_vfs_glue.c
++++ b/fs/yaffs2/yaffs_vfs_glue.c
+@@ -2793,6 +2793,15 @@ static struct super_block *yaffs_interna
+ return NULL;
+ }
+
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 4, 0)
++ T(YAFFS_TRACE_OS, (TSTR(" erase %p\n"), mtd->_erase));
++ T(YAFFS_TRACE_OS, (TSTR(" read %p\n"), mtd->_read));
++ T(YAFFS_TRACE_OS, (TSTR(" write %p\n"), mtd->_write));
++ T(YAFFS_TRACE_OS, (TSTR(" readoob %p\n"), mtd->_read_oob));
++ T(YAFFS_TRACE_OS, (TSTR(" writeoob %p\n"), mtd->_write_oob));
++ T(YAFFS_TRACE_OS, (TSTR(" block_isbad %p\n"), mtd->_block_isbad));
++ T(YAFFS_TRACE_OS, (TSTR(" block_markbad %p\n"), mtd->_block_markbad));
++#else
+ T(YAFFS_TRACE_OS, (TSTR(" erase %p\n"), mtd->erase));
+ T(YAFFS_TRACE_OS, (TSTR(" read %p\n"), mtd->read));
+ T(YAFFS_TRACE_OS, (TSTR(" write %p\n"), mtd->write));
+@@ -2800,6 +2809,7 @@ static struct super_block *yaffs_interna
+ T(YAFFS_TRACE_OS, (TSTR(" writeoob %p\n"), mtd->write_oob));
+ T(YAFFS_TRACE_OS, (TSTR(" block_isbad %p\n"), mtd->block_isbad));
+ T(YAFFS_TRACE_OS, (TSTR(" block_markbad %p\n"), mtd->block_markbad));
++#endif
+ T(YAFFS_TRACE_OS, (TSTR(" %s %d\n"), WRITE_SIZE_STR, WRITE_SIZE(mtd)));
+ T(YAFFS_TRACE_OS, (TSTR(" oobsize %d\n"), mtd->oobsize));
+ T(YAFFS_TRACE_OS, (TSTR(" erasesize %d\n"), mtd->erasesize));
+@@ -2828,6 +2838,15 @@ static struct super_block *yaffs_interna
+
+ if (yaffs_version == 2) {
+ /* Check for version 2 style functions */
++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 4, 0))
++ if (!mtd->_erase ||
++ !mtd->_block_isbad ||
++ !mtd->_block_markbad ||
++ !mtd->_read ||
++ !mtd->_write ||
++ !mtd->_read_oob ||
++ !mtd->_write_oob) {
++#else
+ if (!mtd->erase ||
+ !mtd->block_isbad ||
+ !mtd->block_markbad ||
+@@ -2839,6 +2858,7 @@ static struct super_block *yaffs_interna
+ !mtd->write_ecc ||
+ !mtd->read_ecc || !mtd->read_oob || !mtd->write_oob) {
+ #endif
++#endif
+ T(YAFFS_TRACE_ALWAYS,
+ (TSTR("yaffs: MTD device does not support required "
+ "functions\n")));
+@@ -2855,6 +2875,13 @@ static struct super_block *yaffs_interna
+ }
+ } else {
+ /* Check for V1 style functions */
++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 4, 0))
++ if (!mtd->_erase ||
++ !mtd->_read ||
++ !mtd->_write ||
++ !mtd->_read_oob ||
++ !mtd->_write_oob) {
++#else
+ if (!mtd->erase ||
+ !mtd->read ||
+ !mtd->write ||
+@@ -2864,6 +2891,7 @@ static struct super_block *yaffs_interna
+ !mtd->write_ecc ||
+ !mtd->read_ecc || !mtd->read_oob || !mtd->write_oob) {
+ #endif
++#endif
+ T(YAFFS_TRACE_ALWAYS,
+ (TSTR("yaffs: MTD device does not support required "
+ "functions\n")));
diff --git a/target/linux/generic/patches-3.6/510-yaffs-3.4-use-d_make_root.patch b/target/linux/generic/patches-3.6/510-yaffs-3.4-use-d_make_root.patch
new file mode 100644
index 0000000000..0ef59d606e
--- /dev/null
+++ b/target/linux/generic/patches-3.6/510-yaffs-3.4-use-d_make_root.patch
@@ -0,0 +1,14 @@
+--- a/fs/yaffs2/yaffs_vfs_glue.c
++++ b/fs/yaffs2/yaffs_vfs_glue.c
+@@ -3119,7 +3119,11 @@ static struct super_block *yaffs_interna
+
+ T(YAFFS_TRACE_OS, (TSTR("yaffs_read_super: got root inode\n")));
+
++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 4, 0))
++ root = d_make_root(inode);
++#else
+ root = d_alloc_root(inode);
++#endif
+
+ T(YAFFS_TRACE_OS, (TSTR("yaffs_read_super: d_alloc_root done\n")));
+
diff --git a/target/linux/generic/patches-3.6/511-yaffs-3.5-use-clear_inode.patch b/target/linux/generic/patches-3.6/511-yaffs-3.5-use-clear_inode.patch
new file mode 100644
index 0000000000..f4479675a2
--- /dev/null
+++ b/target/linux/generic/patches-3.6/511-yaffs-3.5-use-clear_inode.patch
@@ -0,0 +1,15 @@
+--- a/fs/yaffs2/yaffs_vfs_glue.c
++++ b/fs/yaffs2/yaffs_vfs_glue.c
+@@ -924,7 +924,11 @@ static void yaffs_evict_inode( struct in
+ if (!inode->i_nlink && !is_bad_inode(inode))
+ deleteme = 1;
+ truncate_inode_pages(&inode->i_data,0);
+- end_writeback(inode);
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 5, 0)
++ clear_inode(inode);
++#else
++ end_writeback(inode);
++#endif
+
+ if(deleteme && obj){
+ dev = obj->my_dev;
diff --git a/target/linux/generic/patches-3.6/512-yaffs-3.6-fix-dir_inode-ops.patch b/target/linux/generic/patches-3.6/512-yaffs-3.6-fix-dir_inode-ops.patch
new file mode 100644
index 0000000000..f9db0b3fab
--- /dev/null
+++ b/target/linux/generic/patches-3.6/512-yaffs-3.6-fix-dir_inode-ops.patch
@@ -0,0 +1,60 @@
+--- a/fs/yaffs2/yaffs_vfs_glue.c
++++ b/fs/yaffs2/yaffs_vfs_glue.c
+@@ -272,20 +272,29 @@ static int yaffs_sync_object(struct file
+
+ static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir);
+
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 3, 0))
++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0))
++static int yaffs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
++ bool excl);
++#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 3, 0))
+ static int yaffs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
+ struct nameidata *n);
+-#else
++#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+ static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode,
+ struct nameidata *n);
++#else
++static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode);
+ #endif
++
++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0))
++static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry,
++ unsigned int flags);
++#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+ static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry,
+ struct nameidata *n);
+ #else
+-static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode);
+ static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry);
+ #endif
++
+ static int yaffs_link(struct dentry *old_dentry, struct inode *dir,
+ struct dentry *dentry);
+ static int yaffs_unlink(struct inode *dir, struct dentry *dentry);
+@@ -811,7 +820,10 @@ struct inode *yaffs_get_inode(struct sup
+ /*
+ * Lookup is used to find objects in the fs
+ */
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0))
++static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry,
++ unsigned int flags)
++#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+
+ static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry,
+ struct nameidata *n)
+@@ -1801,7 +1813,10 @@ static int yaffs_mkdir(struct inode *dir
+ return retVal;
+ }
+
+-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 3, 0))
++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0))
++static int yaffs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
++ bool excl)
++#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 3, 0))
+ static int yaffs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
+ struct nameidata *n)
+ #elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
diff --git a/target/linux/generic/patches-3.6/513-yaffs-3.6-use-delayed-work-instead-of-write_super.patch b/target/linux/generic/patches-3.6/513-yaffs-3.6-use-delayed-work-instead-of-write_super.patch
new file mode 100644
index 0000000000..579932c69e
--- /dev/null
+++ b/target/linux/generic/patches-3.6/513-yaffs-3.6-use-delayed-work-instead-of-write_super.patch
@@ -0,0 +1,180 @@
+--- a/fs/yaffs2/yaffs_vfs_glue.c
++++ b/fs/yaffs2/yaffs_vfs_glue.c
+@@ -394,6 +394,84 @@ static void yaffs_touch_super(yaffs_dev_
+ static int yaffs_vfs_setattr(struct inode *, struct iattr *);
+
+
++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0))
++
++#define yaffs_super_to_dev(sb) ((struct yaffs_dev_s *)sb->s_fs_info)
++
++static inline struct yaffs_LinuxContext *
++yaffs_sb_to_ylc(struct super_block *sb)
++{
++ struct yaffs_dev_s *ydev;
++ struct yaffs_LinuxContext *ylc;
++
++ ydev = yaffs_super_to_dev(sb);
++ ylc = yaffs_dev_to_lc(ydev);
++ return ylc;
++}
++
++static inline struct super_block *yaffs_work_to_sb(struct work_struct *work)
++{
++ struct delayed_work *dwork;
++ struct yaffs_LinuxContext *ylc;
++
++ dwork = container_of(work, struct delayed_work, work);
++ ylc = container_of(dwork, struct yaffs_LinuxContext, sb_sync_dwork);
++ return ylc->superBlock;
++}
++
++static void yaffs_sb_sync_dwork_func(struct work_struct *work)
++{
++ struct super_block *sb = yaffs_work_to_sb(work);
++
++ yaffs_write_super(sb);
++}
++
++static void yaffs_init_sb_sync_dwork(struct yaffs_LinuxContext *ylc)
++{
++ INIT_DELAYED_WORK(&ylc->sb_sync_dwork, yaffs_sb_sync_dwork_func);
++}
++
++static void yaffs_cancel_sb_sync_dwork(struct super_block *sb)
++{
++ struct yaffs_LinuxContext *ylc = yaffs_sb_to_ylc(sb);
++
++ cancel_delayed_work_sync(&ylc->sb_sync_dwork);
++}
++
++static inline bool yaffs_sb_is_dirty(struct super_block *sb)
++{
++ struct yaffs_LinuxContext *ylc = yaffs_sb_to_ylc(sb);
++
++ return !!ylc->sb_dirty;
++}
++
++static inline void yaffs_sb_set_dirty(struct super_block *sb, int dirty)
++{
++ struct yaffs_LinuxContext *ylc = yaffs_sb_to_ylc(sb);
++
++ if (ylc->sb_dirty == dirty)
++ return;
++
++ ylc->sb_dirty = dirty;
++ if (dirty)
++ queue_delayed_work(system_long_wq, &ylc->sb_sync_dwork,
++ msecs_to_jiffies(5000));
++}
++#else
++static inline bool yaffs_sb_is_dirty(struct super_block *sb)
++{
++ return !!sb->s_dirt;
++}
++
++static inline void yaffs_sb_set_dirty(struct super_block *sb, int dirty)
++{
++ sb->s_dirt = dirty;
++}
++
++static inline void yaffs_init_sb_sync_dwork(struct yaffs_LinuxContext *ylc) {}
++static inline void yaffs_cancel_sb_sync_dwork(struct super_block *sb) {}
++#endif /* >= 3.6.0 */
++
+ static struct address_space_operations yaffs_file_address_operations = {
+ .readpage = yaffs_readpage,
+ .writepage = yaffs_writepage,
+@@ -527,7 +605,9 @@ static const struct super_operations yaf
+ .clear_inode = yaffs_clear_inode,
+ #endif
+ .sync_fs = yaffs_sync_fs,
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 6, 0))
+ .write_super = yaffs_write_super,
++#endif
+ };
+
+
+@@ -2314,7 +2394,7 @@ static int yaffs_do_sync_fs(struct super
+ T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC | YAFFS_TRACE_BACKGROUND,
+ (TSTR("yaffs_do_sync_fs: gc-urgency %d %s %s%s\n"),
+ gc_urgent,
+- sb->s_dirt ? "dirty" : "clean",
++ yaffs_sb_is_dirty(sb) ? "dirty" : "clean",
+ request_checkpoint ? "checkpoint requested" : "no checkpoint",
+ oneshot_checkpoint ? " one-shot" : "" ));
+
+@@ -2323,9 +2403,9 @@ static int yaffs_do_sync_fs(struct super
+ oneshot_checkpoint) &&
+ !dev->is_checkpointed;
+
+- if (sb->s_dirt || do_checkpoint) {
++ if (yaffs_sb_is_dirty(sb) || do_checkpoint) {
+ yaffs_flush_super(sb, !dev->is_checkpointed && do_checkpoint);
+- sb->s_dirt = 0;
++ yaffs_sb_set_dirty(sb, 0);
+ if(oneshot_checkpoint)
+ yaffs_auto_checkpoint &= ~4;
+ }
+@@ -2601,6 +2681,8 @@ static void yaffs_put_super(struct super
+
+ yaffs_flush_super(sb,1);
+
++ yaffs_cancel_sb_sync_dwork(sb);
++
+ if (yaffs_dev_to_lc(dev)->putSuperFunc)
+ yaffs_dev_to_lc(dev)->putSuperFunc(sb);
+
+@@ -2639,7 +2721,7 @@ static void yaffs_touch_super(yaffs_dev_
+
+ T(YAFFS_TRACE_OS, (TSTR("yaffs_touch_super() sb = %p\n"), sb));
+ if (sb)
+- sb->s_dirt = 1;
++ yaffs_sb_set_dirty(sb, 1);
+ }
+
+ typedef struct {
+@@ -2965,6 +3047,8 @@ static struct super_block *yaffs_interna
+ context->dev = dev;
+ context->superBlock = sb;
+
++ yaffs_init_sb_sync_dwork(context);
++
+ dev->read_only = read_only;
+
+ #if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+@@ -3151,7 +3235,7 @@ static struct super_block *yaffs_interna
+ return NULL;
+ }
+ sb->s_root = root;
+- sb->s_dirt = !dev->is_checkpointed;
++ yaffs_sb_set_dirty(sb, !dev->is_checkpointed);
+ T(YAFFS_TRACE_ALWAYS,
+ (TSTR("yaffs_read_super: is_checkpointed %d\n"),
+ dev->is_checkpointed));
+--- a/fs/yaffs2/yaffs_linux.h
++++ b/fs/yaffs2/yaffs_linux.h
+@@ -34,6 +34,11 @@ struct yaffs_LinuxContext {
+
+ struct task_struct *readdirProcess;
+ unsigned mount_id;
++
++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0))
++ struct delayed_work sb_sync_dwork; /* superblock write-out work */
++ int sb_dirty; /* superblock is dirty */
++#endif
+ };
+
+ #define yaffs_dev_to_lc(dev) ((struct yaffs_LinuxContext *)((dev)->os_context))
+--- a/fs/yaffs2/yportenv.h
++++ b/fs/yaffs2/yportenv.h
+@@ -49,6 +49,9 @@
+ #include <linux/slab.h>
+ #include <linux/vmalloc.h>
+ #include <linux/xattr.h>
++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0))
++#include <linux/workqueue.h>
++#endif
+
+ #define YCHAR char
+ #define YUCHAR unsigned char
--
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