generic: replace yaffs mutex_fix patch

Use a backported patch instead.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@34021 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/generic/patches-3.3/502-yaffs-Switch-from-semaphores-to-mutexes.patch b/target/linux/generic/patches-3.3/502-yaffs-Switch-from-semaphores-to-mutexes.patch
new file mode 100644 (file)
index 0000000..8d1872e
--- /dev/null
+++ b/target/linux/generic/patches-3.3/502-yaffs-Switch-from-semaphores-to-mutexes.patch
@@ -0,0 +1,138 @@
+From c0c289363e84c53b5872f7c0c5069045096dca07 Mon Sep 17 00:00:00 2001
+From: Charles Manning <cdhmanning@gmail.com>
+Date: Wed, 3 Nov 2010 16:01:12 +1300
+Subject: [PATCH] yaffs: Switch from semaphores to mutexes
+
+commit 73c54aa8c1de3f61a4c211cd47431293a6092f18 upstream.
+
+Mutex is faster and init_MUTEX has been deprecated, so we'll just switch
+to mutexes.
+
+Signed-off-by: Charles Manning <cdhmanning@gmail.com>
+---
+ yaffs_linux.h     |    2 +-
+ yaffs_vfs.c       |   24 ++++++++++++------------
+ yaffs_vfs_multi.c |   26 +++++++++++++-------------
+ 3 files changed, 26 insertions(+), 26 deletions(-)
+
+--- a/fs/yaffs2/yaffs_linux.h
++++ b/fs/yaffs2/yaffs_linux.h
+@@ -25,7 +25,7 @@ struct yaffs_LinuxContext {
+       struct super_block * superBlock;
+       struct task_struct *bgThread; /* Background thread for this device */
+       int bgRunning;
+-        struct semaphore grossLock;     /* Gross locking semaphore */
++      struct mutex grossLock; /* Gross locking mutex*/
+       __u8 *spareBuffer;      /* For mtdif2 use. Don't know the size of the buffer
+                                * at compile time so we have to allocate it.
+                                */
+--- a/fs/yaffs2/yaffs_vfs_glue.c
++++ b/fs/yaffs2/yaffs_vfs_glue.c
+@@ -515,14 +515,14 @@ static unsigned yaffs_gc_control_callbac
+ static void yaffs_gross_lock(yaffs_dev_t *dev)
+ {
+       T(YAFFS_TRACE_LOCK, (TSTR("yaffs locking %p\n"), current));
+-      down(&(yaffs_dev_to_lc(dev)->grossLock));
++      mutex_lock(&(yaffs_dev_to_lc(dev)->grossLock));
+       T(YAFFS_TRACE_LOCK, (TSTR("yaffs locked %p\n"), current));
+ }
+ 
+ static void yaffs_gross_unlock(yaffs_dev_t *dev)
+ {
+       T(YAFFS_TRACE_LOCK, (TSTR("yaffs unlocking %p\n"), current));
+-      up(&(yaffs_dev_to_lc(dev)->grossLock));
++      mutex_unlock(&(yaffs_dev_to_lc(dev)->grossLock));
+ }
+ 
+ #ifdef YAFFS_COMPILE_EXPORTFS
+@@ -2542,7 +2542,7 @@ static void yaffs_read_inode(struct inod
+ #endif
+ 
+ static YLIST_HEAD(yaffs_context_list);
+-struct semaphore yaffs_context_lock;
++struct mutex yaffs_context_lock;
+ 
+ static void yaffs_put_super(struct super_block *sb)
+ {
+@@ -2568,9 +2568,9 @@ static void yaffs_put_super(struct super
+ 
+       yaffs_gross_unlock(dev);
+ 
+-      down(&yaffs_context_lock);
++      mutex_lock(&yaffs_context_lock);
+       ylist_del_init(&(yaffs_dev_to_lc(dev)->contextList));
+-      up(&yaffs_context_lock);
++      mutex_unlock(&yaffs_context_lock);
+ 
+       if (yaffs_dev_to_lc(dev)->spareBuffer) {
+               YFREE(yaffs_dev_to_lc(dev)->spareBuffer);
+@@ -3016,7 +3016,7 @@ static struct super_block *yaffs_interna
+       param->skip_checkpt_rd = options.skip_checkpoint_read;
+       param->skip_checkpt_wr = options.skip_checkpoint_write;
+ 
+-      down(&yaffs_context_lock);
++      mutex_lock(&yaffs_context_lock);
+       /* Get a mount id */
+       found = 0;
+       for(mount_id=0; ! found; mount_id++){
+@@ -3030,13 +3030,13 @@ static struct super_block *yaffs_interna
+       context->mount_id = mount_id;
+ 
+       ylist_add_tail(&(yaffs_dev_to_lc(dev)->contextList), &yaffs_context_list);
+-      up(&yaffs_context_lock);
++      mutex_unlock(&yaffs_context_lock);
+ 
+         /* Directory search handling...*/
+         YINIT_LIST_HEAD(&(yaffs_dev_to_lc(dev)->searchContexts));
+         param->remove_obj_fn = yaffs_remove_obj_callback;
+ 
+-      init_MUTEX(&(yaffs_dev_to_lc(dev)->grossLock));
++      mutex_init(&(yaffs_dev_to_lc(dev)->grossLock));
+ 
+       yaffs_gross_lock(dev);
+ 
+@@ -3268,7 +3268,7 @@ static int yaffs_proc_read(char *page,
+       else {
+               step-=2;
+               
+-              down(&yaffs_context_lock);
++              mutex_lock(&yaffs_context_lock);
+ 
+               /* Locate and print the Nth entry.  Order N-squared but N is small. */
+               ylist_for_each(item, &yaffs_context_list) {
+@@ -3287,7 +3287,7 @@ static int yaffs_proc_read(char *page,
+                       
+                       break;
+               }
+-              up(&yaffs_context_lock);
++              mutex_unlock(&yaffs_context_lock);
+       }
+ 
+       return buf - page < count ? buf - page : count;
+@@ -3301,7 +3301,7 @@ static int yaffs_stats_proc_read(char *p
+       char *buf = page;
+       int n = 0;
+ 
+-      down(&yaffs_context_lock);
++      mutex_lock(&yaffs_context_lock);
+ 
+       /* Locate and print the Nth entry.  Order N-squared but N is small. */
+       ylist_for_each(item, &yaffs_context_list) {
+@@ -3317,7 +3317,7 @@ static int yaffs_stats_proc_read(char *p
+                               dev->bg_gcs, dev->oldest_dirty_gc_count,
+                               dev->n_obj, dev->n_tnodes);
+       }
+-      up(&yaffs_context_lock);
++      mutex_unlock(&yaffs_context_lock);
+ 
+ 
+       return buf - page < count ? buf - page : count;
+@@ -3494,7 +3494,7 @@ static int __init init_yaffs_fs(void)
+ 
+ 
+ 
+-      init_MUTEX(&yaffs_context_lock);
++      mutex_init(&yaffs_context_lock);
+ 
+       /* Install the proc_fs entries */
+       my_proc_entry = create_proc_entry("yaffs",

diff --git a/target/linux/generic/patches-3.3/502-yaffs-mutex-fix.patch b/target/linux/generic/patches-3.3/502-yaffs-mutex-fix.patch
deleted file mode 100644 (file)
index b34b12f..0000000
--- a/target/linux/generic/patches-3.3/502-yaffs-mutex-fix.patch
+++ /dev/null
@@ -1,20 +0,0 @@
---- a/fs/yaffs2/yaffs_vfs_glue.c
-+++ b/fs/yaffs2/yaffs_vfs_glue.c
-@@ -3036,7 +3036,7 @@ static struct super_block *yaffs_interna
-         YINIT_LIST_HEAD(&(yaffs_dev_to_lc(dev)->searchContexts));
-         param->remove_obj_fn = yaffs_remove_obj_callback;
- 
--      init_MUTEX(&(yaffs_dev_to_lc(dev)->grossLock));
-+      sema_init(&(yaffs_dev_to_lc(dev)->grossLock), 1);
- 
-       yaffs_gross_lock(dev);
- 
-@@ -3494,7 +3494,7 @@ static int __init init_yaffs_fs(void)
- 
- 
- 
--      init_MUTEX(&yaffs_context_lock);
-+      sema_init((&yaffs_context_lock), 1);
- 
-       /* Install the proc_fs entries */
-       my_proc_entry = create_proc_entry("yaffs",

diff --git a/target/linux/generic/patches-3.3/504-yaffs-3.2_fix.patch b/target/linux/generic/patches-3.3/504-yaffs-3.2_fix.patch
index f84332a..4b1a71e 100644 (file)
--- a/target/linux/generic/patches-3.3/504-yaffs-3.2_fix.patch
+++ b/target/linux/generic/patches-3.3/504-yaffs-3.2_fix.patch
@@ -204,15 +204,6 @@
  }
  
  static struct file_system_type yaffs2_fs_type = {
-@@ -3223,7 +3250,7 @@ static int yaffs_proc_read(char *page,
-               buf += sprintf(buf,"\n");
-       else {
-               step-=2;
--              
-+
-               down(&yaffs_context_lock);
- 
-               /* Locate and print the Nth entry.  Order N-squared but N is small. */
 @@ -3240,7 +3267,7 @@ static int yaffs_proc_read(char *page,
                                buf = yaffs_dump_dev_part0(buf, dev);
                        } else
@@ -221,7 +212,7 @@
 +
                        break;
                }
-               up(&yaffs_context_lock);
+               mutex_unlock(&yaffs_context_lock);
 @@ -3267,7 +3294,7 @@ static int yaffs_stats_proc_read(char *p
                int erasedChunks;
  

diff --git a/target/linux/generic/patches-3.6/502-yaffs-Switch-from-semaphores-to-mutexes.patch b/target/linux/generic/patches-3.6/502-yaffs-Switch-from-semaphores-to-mutexes.patch
new file mode 100644 (file)
index 0000000..8d1872e
--- /dev/null
+++ b/target/linux/generic/patches-3.6/502-yaffs-Switch-from-semaphores-to-mutexes.patch
@@ -0,0 +1,138 @@
+From c0c289363e84c53b5872f7c0c5069045096dca07 Mon Sep 17 00:00:00 2001
+From: Charles Manning <cdhmanning@gmail.com>
+Date: Wed, 3 Nov 2010 16:01:12 +1300
+Subject: [PATCH] yaffs: Switch from semaphores to mutexes
+
+commit 73c54aa8c1de3f61a4c211cd47431293a6092f18 upstream.
+
+Mutex is faster and init_MUTEX has been deprecated, so we'll just switch
+to mutexes.
+
+Signed-off-by: Charles Manning <cdhmanning@gmail.com>
+---
+ yaffs_linux.h     |    2 +-
+ yaffs_vfs.c       |   24 ++++++++++++------------
+ yaffs_vfs_multi.c |   26 +++++++++++++-------------
+ 3 files changed, 26 insertions(+), 26 deletions(-)
+
+--- a/fs/yaffs2/yaffs_linux.h
++++ b/fs/yaffs2/yaffs_linux.h
+@@ -25,7 +25,7 @@ struct yaffs_LinuxContext {
+       struct super_block * superBlock;
+       struct task_struct *bgThread; /* Background thread for this device */
+       int bgRunning;
+-        struct semaphore grossLock;     /* Gross locking semaphore */
++      struct mutex grossLock; /* Gross locking mutex*/
+       __u8 *spareBuffer;      /* For mtdif2 use. Don't know the size of the buffer
+                                * at compile time so we have to allocate it.
+                                */
+--- a/fs/yaffs2/yaffs_vfs_glue.c
++++ b/fs/yaffs2/yaffs_vfs_glue.c
+@@ -515,14 +515,14 @@ static unsigned yaffs_gc_control_callbac
+ static void yaffs_gross_lock(yaffs_dev_t *dev)
+ {
+       T(YAFFS_TRACE_LOCK, (TSTR("yaffs locking %p\n"), current));
+-      down(&(yaffs_dev_to_lc(dev)->grossLock));
++      mutex_lock(&(yaffs_dev_to_lc(dev)->grossLock));
+       T(YAFFS_TRACE_LOCK, (TSTR("yaffs locked %p\n"), current));
+ }
+ 
+ static void yaffs_gross_unlock(yaffs_dev_t *dev)
+ {
+       T(YAFFS_TRACE_LOCK, (TSTR("yaffs unlocking %p\n"), current));
+-      up(&(yaffs_dev_to_lc(dev)->grossLock));
++      mutex_unlock(&(yaffs_dev_to_lc(dev)->grossLock));
+ }
+ 
+ #ifdef YAFFS_COMPILE_EXPORTFS
+@@ -2542,7 +2542,7 @@ static void yaffs_read_inode(struct inod
+ #endif
+ 
+ static YLIST_HEAD(yaffs_context_list);
+-struct semaphore yaffs_context_lock;
++struct mutex yaffs_context_lock;
+ 
+ static void yaffs_put_super(struct super_block *sb)
+ {
+@@ -2568,9 +2568,9 @@ static void yaffs_put_super(struct super
+ 
+       yaffs_gross_unlock(dev);
+ 
+-      down(&yaffs_context_lock);
++      mutex_lock(&yaffs_context_lock);
+       ylist_del_init(&(yaffs_dev_to_lc(dev)->contextList));
+-      up(&yaffs_context_lock);
++      mutex_unlock(&yaffs_context_lock);
+ 
+       if (yaffs_dev_to_lc(dev)->spareBuffer) {
+               YFREE(yaffs_dev_to_lc(dev)->spareBuffer);
+@@ -3016,7 +3016,7 @@ static struct super_block *yaffs_interna
+       param->skip_checkpt_rd = options.skip_checkpoint_read;
+       param->skip_checkpt_wr = options.skip_checkpoint_write;
+ 
+-      down(&yaffs_context_lock);
++      mutex_lock(&yaffs_context_lock);
+       /* Get a mount id */
+       found = 0;
+       for(mount_id=0; ! found; mount_id++){
+@@ -3030,13 +3030,13 @@ static struct super_block *yaffs_interna
+       context->mount_id = mount_id;
+ 
+       ylist_add_tail(&(yaffs_dev_to_lc(dev)->contextList), &yaffs_context_list);
+-      up(&yaffs_context_lock);
++      mutex_unlock(&yaffs_context_lock);
+ 
+         /* Directory search handling...*/
+         YINIT_LIST_HEAD(&(yaffs_dev_to_lc(dev)->searchContexts));
+         param->remove_obj_fn = yaffs_remove_obj_callback;
+ 
+-      init_MUTEX(&(yaffs_dev_to_lc(dev)->grossLock));
++      mutex_init(&(yaffs_dev_to_lc(dev)->grossLock));
+ 
+       yaffs_gross_lock(dev);
+ 
+@@ -3268,7 +3268,7 @@ static int yaffs_proc_read(char *page,
+       else {
+               step-=2;
+               
+-              down(&yaffs_context_lock);
++              mutex_lock(&yaffs_context_lock);
+ 
+               /* Locate and print the Nth entry.  Order N-squared but N is small. */
+               ylist_for_each(item, &yaffs_context_list) {
+@@ -3287,7 +3287,7 @@ static int yaffs_proc_read(char *page,
+                       
+                       break;
+               }
+-              up(&yaffs_context_lock);
++              mutex_unlock(&yaffs_context_lock);
+       }
+ 
+       return buf - page < count ? buf - page : count;
+@@ -3301,7 +3301,7 @@ static int yaffs_stats_proc_read(char *p
+       char *buf = page;
+       int n = 0;
+ 
+-      down(&yaffs_context_lock);
++      mutex_lock(&yaffs_context_lock);
+ 
+       /* Locate and print the Nth entry.  Order N-squared but N is small. */
+       ylist_for_each(item, &yaffs_context_list) {
+@@ -3317,7 +3317,7 @@ static int yaffs_stats_proc_read(char *p
+                               dev->bg_gcs, dev->oldest_dirty_gc_count,
+                               dev->n_obj, dev->n_tnodes);
+       }
+-      up(&yaffs_context_lock);
++      mutex_unlock(&yaffs_context_lock);
+ 
+ 
+       return buf - page < count ? buf - page : count;
+@@ -3494,7 +3494,7 @@ static int __init init_yaffs_fs(void)
+ 
+ 
+ 
+-      init_MUTEX(&yaffs_context_lock);
++      mutex_init(&yaffs_context_lock);
+ 
+       /* Install the proc_fs entries */
+       my_proc_entry = create_proc_entry("yaffs",

diff --git a/target/linux/generic/patches-3.6/502-yaffs-mutex-fix.patch b/target/linux/generic/patches-3.6/502-yaffs-mutex-fix.patch
deleted file mode 100644 (file)
index b34b12f..0000000
--- a/target/linux/generic/patches-3.6/502-yaffs-mutex-fix.patch
+++ /dev/null
@@ -1,20 +0,0 @@
---- a/fs/yaffs2/yaffs_vfs_glue.c
-+++ b/fs/yaffs2/yaffs_vfs_glue.c
-@@ -3036,7 +3036,7 @@ static struct super_block *yaffs_interna
-         YINIT_LIST_HEAD(&(yaffs_dev_to_lc(dev)->searchContexts));
-         param->remove_obj_fn = yaffs_remove_obj_callback;
- 
--      init_MUTEX(&(yaffs_dev_to_lc(dev)->grossLock));
-+      sema_init(&(yaffs_dev_to_lc(dev)->grossLock), 1);
- 
-       yaffs_gross_lock(dev);
- 
-@@ -3494,7 +3494,7 @@ static int __init init_yaffs_fs(void)
- 
- 
- 
--      init_MUTEX(&yaffs_context_lock);
-+      sema_init((&yaffs_context_lock), 1);
- 
-       /* Install the proc_fs entries */
-       my_proc_entry = create_proc_entry("yaffs",

diff --git a/target/linux/generic/patches-3.6/504-yaffs-3.2_fix.patch b/target/linux/generic/patches-3.6/504-yaffs-3.2_fix.patch
index f84332a..4b1a71e 100644 (file)
--- a/target/linux/generic/patches-3.6/504-yaffs-3.2_fix.patch
+++ b/target/linux/generic/patches-3.6/504-yaffs-3.2_fix.patch
@@ -204,15 +204,6 @@
  }
  
  static struct file_system_type yaffs2_fs_type = {
-@@ -3223,7 +3250,7 @@ static int yaffs_proc_read(char *page,
-               buf += sprintf(buf,"\n");
-       else {
-               step-=2;
--              
-+
-               down(&yaffs_context_lock);
- 
-               /* Locate and print the Nth entry.  Order N-squared but N is small. */
 @@ -3240,7 +3267,7 @@ static int yaffs_proc_read(char *page,
                                buf = yaffs_dump_dev_part0(buf, dev);
                        } else
@@ -221,7 +212,7 @@
 +
                        break;
                }
-               up(&yaffs_context_lock);
+               mutex_unlock(&yaffs_context_lock);
 @@ -3267,7 +3294,7 @@ static int yaffs_stats_proc_read(char *p
                int erasedChunks;