diff options
Diffstat (limited to 'target/linux/generic/patches-3.12/514-yaffs-3.6-use-delayed-work-instead-of-write_super.patch')
| -rw-r--r-- | target/linux/generic/patches-3.12/514-yaffs-3.6-use-delayed-work-instead-of-write_super.patch | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.12/514-yaffs-3.6-use-delayed-work-instead-of-write_super.patch b/target/linux/generic/patches-3.12/514-yaffs-3.6-use-delayed-work-instead-of-write_super.patch new file mode 100644 index 0000000..c6ecddf --- /dev/null +++ b/target/linux/generic/patches-3.12/514-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 +@@ -393,6 +393,84 @@ 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, +@@ -553,7 +631,9 @@ 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 + }; + + +@@ -2340,7 +2420,7 @@ 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" : "" )); + +@@ -2349,9 +2429,9 @@ 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; + } +@@ -2627,6 +2707,8 @@ 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); + +@@ -2665,7 +2747,7 @@ 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 { +@@ -2991,6 +3073,8 @@ 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)) +@@ -3177,7 +3261,7 @@ 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 |