Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

[linux.git] / fs / jffs2 / wbuf.c

diff --git a/fs/jffs2/wbuf.c b/fs/jffs2/wbuf.c
index 74d9be19df3f1fff1d7defdc7824c90240a302f6..6f4529d3697fd3f97d5b018dbe9f5c0362cee034 100644 (file)
--- a/fs/jffs2/wbuf.c
+++ b/fs/jffs2/wbuf.c
@@ -20,6 +20,7 @@
 #include <linux/mtd/nand.h>
 #include <linux/jiffies.h>
 #include <linux/sched.h>
+#include <linux/writeback.h>
 
 #include "nodelist.h"
 
@@ -85,7 +86,7 @@ static void jffs2_wbuf_dirties_inode(struct jffs2_sb_info *c, uint32_t ino)
 {
        struct jffs2_inodirty *new;
 
-       /* Mark the superblock dirty so that kupdated will flush... */
+       /* Schedule delayed write-buffer write-out */
        jffs2_dirty_trigger(c);
 
        if (jffs2_wbuf_pending_for_ino(c, ino))
@@ -1148,6 +1149,47 @@ int jffs2_write_nand_badblock(struct jffs2_sb_info *c, struct jffs2_eraseblock *
        return 1;
 }
 
+static struct jffs2_sb_info *work_to_sb(struct work_struct *work)
+{
+       struct delayed_work *dwork;
+
+       dwork = container_of(work, struct delayed_work, work);
+       return container_of(dwork, struct jffs2_sb_info, wbuf_dwork);
+}
+
+static void delayed_wbuf_sync(struct work_struct *work)
+{
+       struct jffs2_sb_info *c = work_to_sb(work);
+       struct super_block *sb = OFNI_BS_2SFFJ(c);
+
+       spin_lock(&c->wbuf_dwork_lock);
+       c->wbuf_queued = 0;
+       spin_unlock(&c->wbuf_dwork_lock);
+
+       if (!(sb->s_flags & MS_RDONLY)) {
+               jffs2_dbg(1, "%s()\n", __func__);
+               jffs2_flush_wbuf_gc(c, 0);
+       }
+}
+
+void jffs2_dirty_trigger(struct jffs2_sb_info *c)
+{
+       struct super_block *sb = OFNI_BS_2SFFJ(c);
+       unsigned long delay;
+
+       if (sb->s_flags & MS_RDONLY)
+               return;
+
+       spin_lock(&c->wbuf_dwork_lock);
+       if (!c->wbuf_queued) {
+               jffs2_dbg(1, "%s()\n", __func__);
+               delay = msecs_to_jiffies(dirty_writeback_interval * 10);
+               queue_delayed_work(system_long_wq, &c->wbuf_dwork, delay);
+               c->wbuf_queued = 1;
+       }
+       spin_unlock(&c->wbuf_dwork_lock);
+}
+
 int jffs2_nand_flash_setup(struct jffs2_sb_info *c)
 {
        struct nand_ecclayout *oinfo = c->mtd->ecclayout;
@@ -1169,6 +1211,8 @@ int jffs2_nand_flash_setup(struct jffs2_sb_info *c)
 
        /* Initialise write buffer */
        init_rwsem(&c->wbuf_sem);
+       spin_lock_init(&c->wbuf_dwork_lock);
+       INIT_DELAYED_WORK(&c->wbuf_dwork, delayed_wbuf_sync);
        c->wbuf_pagesize = c->mtd->writesize;
        c->wbuf_ofs = 0xFFFFFFFF;
 
@@ -1207,8 +1251,8 @@ int jffs2_dataflash_setup(struct jffs2_sb_info *c) {
 
        /* Initialize write buffer */
        init_rwsem(&c->wbuf_sem);
-
-
+       spin_lock_init(&c->wbuf_dwork_lock);
+       INIT_DELAYED_WORK(&c->wbuf_dwork, delayed_wbuf_sync);
        c->wbuf_pagesize =  c->mtd->erasesize;
 
        /* Find a suitable c->sector_size
@@ -1267,6 +1311,9 @@ int jffs2_nor_wbuf_flash_setup(struct jffs2_sb_info *c) {
 
        /* Initialize write buffer */
        init_rwsem(&c->wbuf_sem);
+       spin_lock_init(&c->wbuf_dwork_lock);
+       INIT_DELAYED_WORK(&c->wbuf_dwork, delayed_wbuf_sync);
+
        c->wbuf_pagesize = c->mtd->writesize;
        c->wbuf_ofs = 0xFFFFFFFF;
 
@@ -1299,6 +1346,8 @@ int jffs2_ubivol_setup(struct jffs2_sb_info *c) {
                return 0;
 
        init_rwsem(&c->wbuf_sem);
+       spin_lock_init(&c->wbuf_dwork_lock);
+       INIT_DELAYED_WORK(&c->wbuf_dwork, delayed_wbuf_sync);
 
        c->wbuf_pagesize =  c->mtd->writesize;
        c->wbuf_ofs = 0xFFFFFFFF;