mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-29 18:19:02 +00:00
181 lines
4.9 KiB
Diff
181 lines
4.9 KiB
Diff
--- a/fs/yaffs2/yaffs_vfs_glue.c
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+++ b/fs/yaffs2/yaffs_vfs_glue.c
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@@ -393,6 +393,84 @@ static void yaffs_touch_super(yaffs_dev_
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static int yaffs_vfs_setattr(struct inode *, struct iattr *);
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+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0))
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+
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+#define yaffs_super_to_dev(sb) ((struct yaffs_dev_s *)sb->s_fs_info)
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+
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+static inline struct yaffs_LinuxContext *
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+yaffs_sb_to_ylc(struct super_block *sb)
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+{
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+ struct yaffs_dev_s *ydev;
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+ struct yaffs_LinuxContext *ylc;
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+
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+ ydev = yaffs_super_to_dev(sb);
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+ ylc = yaffs_dev_to_lc(ydev);
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+ return ylc;
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+}
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+
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+static inline struct super_block *yaffs_work_to_sb(struct work_struct *work)
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+{
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+ struct delayed_work *dwork;
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+ struct yaffs_LinuxContext *ylc;
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+
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+ dwork = container_of(work, struct delayed_work, work);
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+ ylc = container_of(dwork, struct yaffs_LinuxContext, sb_sync_dwork);
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+ return ylc->superBlock;
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+}
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+
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+static void yaffs_sb_sync_dwork_func(struct work_struct *work)
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+{
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+ struct super_block *sb = yaffs_work_to_sb(work);
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+
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+ yaffs_write_super(sb);
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+}
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+
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+static void yaffs_init_sb_sync_dwork(struct yaffs_LinuxContext *ylc)
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+{
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+ INIT_DELAYED_WORK(&ylc->sb_sync_dwork, yaffs_sb_sync_dwork_func);
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+}
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+
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+static void yaffs_cancel_sb_sync_dwork(struct super_block *sb)
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+{
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+ struct yaffs_LinuxContext *ylc = yaffs_sb_to_ylc(sb);
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+
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+ cancel_delayed_work_sync(&ylc->sb_sync_dwork);
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+}
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+
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+static inline bool yaffs_sb_is_dirty(struct super_block *sb)
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+{
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+ struct yaffs_LinuxContext *ylc = yaffs_sb_to_ylc(sb);
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+
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+ return !!ylc->sb_dirty;
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+}
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+
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+static inline void yaffs_sb_set_dirty(struct super_block *sb, int dirty)
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+{
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+ struct yaffs_LinuxContext *ylc = yaffs_sb_to_ylc(sb);
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+
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+ if (ylc->sb_dirty == dirty)
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+ return;
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+
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+ ylc->sb_dirty = dirty;
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+ if (dirty)
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+ queue_delayed_work(system_long_wq, &ylc->sb_sync_dwork,
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+ msecs_to_jiffies(5000));
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+}
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+#else
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+static inline bool yaffs_sb_is_dirty(struct super_block *sb)
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+{
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+ return !!sb->s_dirt;
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+}
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+
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+static inline void yaffs_sb_set_dirty(struct super_block *sb, int dirty)
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+{
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+ sb->s_dirt = dirty;
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+}
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+
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+static inline void yaffs_init_sb_sync_dwork(struct yaffs_LinuxContext *ylc) {}
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+static inline void yaffs_cancel_sb_sync_dwork(struct super_block *sb) {}
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+#endif /* >= 3.6.0 */
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+
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static struct address_space_operations yaffs_file_address_operations = {
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.readpage = yaffs_readpage,
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.writepage = yaffs_writepage,
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@@ -553,7 +631,9 @@ static const struct super_operations yaf
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.clear_inode = yaffs_clear_inode,
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#endif
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.sync_fs = yaffs_sync_fs,
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+#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 6, 0))
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.write_super = yaffs_write_super,
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+#endif
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};
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@@ -2340,7 +2420,7 @@ static int yaffs_do_sync_fs(struct super
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T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC | YAFFS_TRACE_BACKGROUND,
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(TSTR("yaffs_do_sync_fs: gc-urgency %d %s %s%s\n"),
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gc_urgent,
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- sb->s_dirt ? "dirty" : "clean",
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+ yaffs_sb_is_dirty(sb) ? "dirty" : "clean",
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request_checkpoint ? "checkpoint requested" : "no checkpoint",
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oneshot_checkpoint ? " one-shot" : "" ));
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@@ -2349,9 +2429,9 @@ static int yaffs_do_sync_fs(struct super
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oneshot_checkpoint) &&
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!dev->is_checkpointed;
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- if (sb->s_dirt || do_checkpoint) {
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+ if (yaffs_sb_is_dirty(sb) || do_checkpoint) {
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yaffs_flush_super(sb, !dev->is_checkpointed && do_checkpoint);
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- sb->s_dirt = 0;
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+ yaffs_sb_set_dirty(sb, 0);
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if(oneshot_checkpoint)
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yaffs_auto_checkpoint &= ~4;
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}
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@@ -2627,6 +2707,8 @@ static void yaffs_put_super(struct super
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yaffs_flush_super(sb,1);
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+ yaffs_cancel_sb_sync_dwork(sb);
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+
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if (yaffs_dev_to_lc(dev)->putSuperFunc)
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yaffs_dev_to_lc(dev)->putSuperFunc(sb);
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@@ -2665,7 +2747,7 @@ static void yaffs_touch_super(yaffs_dev_
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T(YAFFS_TRACE_OS, (TSTR("yaffs_touch_super() sb = %p\n"), sb));
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if (sb)
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- sb->s_dirt = 1;
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+ yaffs_sb_set_dirty(sb, 1);
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}
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typedef struct {
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@@ -2991,6 +3073,8 @@ static struct super_block *yaffs_interna
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context->dev = dev;
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context->superBlock = sb;
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+ yaffs_init_sb_sync_dwork(context);
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+
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dev->read_only = read_only;
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#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
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@@ -3177,7 +3261,7 @@ static struct super_block *yaffs_interna
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return NULL;
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}
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sb->s_root = root;
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- sb->s_dirt = !dev->is_checkpointed;
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+ yaffs_sb_set_dirty(sb, !dev->is_checkpointed);
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T(YAFFS_TRACE_ALWAYS,
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(TSTR("yaffs_read_super: is_checkpointed %d\n"),
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dev->is_checkpointed));
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--- a/fs/yaffs2/yaffs_linux.h
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+++ b/fs/yaffs2/yaffs_linux.h
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@@ -34,6 +34,11 @@ struct yaffs_LinuxContext {
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struct task_struct *readdirProcess;
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unsigned mount_id;
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+
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+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0))
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+ struct delayed_work sb_sync_dwork; /* superblock write-out work */
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+ int sb_dirty; /* superblock is dirty */
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+#endif
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};
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#define yaffs_dev_to_lc(dev) ((struct yaffs_LinuxContext *)((dev)->os_context))
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--- a/fs/yaffs2/yportenv.h
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+++ b/fs/yaffs2/yportenv.h
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@@ -49,6 +49,9 @@
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#include <linux/slab.h>
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#include <linux/vmalloc.h>
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#include <linux/xattr.h>
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+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0))
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+#include <linux/workqueue.h>
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+#endif
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#define YCHAR char
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#define YUCHAR unsigned char
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