Merge git://oss.sgi.com:8090/xfs/xfs-2.6

[linux-drm-fsl-dcu.git] / fs / fs-writeback.c

diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index f3fbe2d030f4def8fae388ef49bc617bf251e913..a4b142a6a2c7f4c870a322bf9d3c9d00be1e8a5f 100644 (file)
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -22,8 +22,7 @@
 #include <linux/blkdev.h>
 #include <linux/backing-dev.h>
 #include <linux/buffer_head.h>
-
-extern struct super_block *blockdev_superblock;
+#include "internal.h"
 
 /**
  *     __mark_inode_dirty -    internal function
@@ -252,8 +251,19 @@ __writeback_single_inode(struct inode *inode, struct writeback_control *wbc)
                WARN_ON(inode->i_state & I_WILL_FREE);
 
        if ((wbc->sync_mode != WB_SYNC_ALL) && (inode->i_state & I_LOCK)) {
+               struct address_space *mapping = inode->i_mapping;
+               int ret;
+
                list_move(&inode->i_list, &inode->i_sb->s_dirty);
-               return 0;
+
+               /*
+                * Even if we don't actually write the inode itself here,
+                * we can at least start some of the data writeout..
+                */
+               spin_unlock(&inode_lock);
+               ret = do_writepages(mapping, wbc);
+               spin_lock(&inode_lock);
+               return ret;
        }
 
        /*
@@ -320,7 +330,7 @@ sync_sb_inodes(struct super_block *sb, struct writeback_control *wbc)
 
                if (!bdi_cap_writeback_dirty(bdi)) {
                        list_move(&inode->i_list, &sb->s_dirty);
-                       if (sb == blockdev_superblock) {
+                       if (sb_is_blkdev_sb(sb)) {
                                /*
                                 * Dirty memory-backed blockdev: the ramdisk
                                 * driver does this.  Skip just this inode
@@ -337,14 +347,14 @@ sync_sb_inodes(struct super_block *sb, struct writeback_control *wbc)
 
                if (wbc->nonblocking && bdi_write_congested(bdi)) {
                        wbc->encountered_congestion = 1;
-                       if (sb != blockdev_superblock)
+                       if (!sb_is_blkdev_sb(sb))
                                break;          /* Skip a congested fs */
                        list_move(&inode->i_list, &sb->s_dirty);
                        continue;               /* Skip a congested blockdev */
                }
 
                if (wbc->bdi && bdi != wbc->bdi) {
-                       if (sb != blockdev_superblock)
+                       if (!sb_is_blkdev_sb(sb))
                                break;          /* fs has the wrong queue */
                        list_move(&inode->i_list, &sb->s_dirty);
                        continue;               /* blockdev has wrong queue */
@@ -461,9 +471,11 @@ void sync_inodes_sb(struct super_block *sb, int wait)
 {
        struct writeback_control wbc = {
                .sync_mode      = wait ? WB_SYNC_ALL : WB_SYNC_HOLD,
+               .range_start    = 0,
+               .range_end      = LLONG_MAX,
        };
-       unsigned long nr_dirty = read_page_state(nr_dirty);
-       unsigned long nr_unstable = read_page_state(nr_unstable);
+       unsigned long nr_dirty = global_page_state(NR_FILE_DIRTY);
+       unsigned long nr_unstable = global_page_state(NR_UNSTABLE_NFS);
 
        wbc.nr_to_write = nr_dirty + nr_unstable +
                        (inodes_stat.nr_inodes - inodes_stat.nr_unused) +
@@ -559,6 +571,8 @@ int write_inode_now(struct inode *inode, int sync)
        struct writeback_control wbc = {
                .nr_to_write = LONG_MAX,
                .sync_mode = WB_SYNC_ALL,
+               .range_start = 0,
+               .range_end = LLONG_MAX,
        };
 
        if (!mapping_cap_writeback_dirty(inode->i_mapping))
@@ -619,7 +633,6 @@ int generic_osync_inode(struct inode *inode, struct address_space *mapping, int
        int need_write_inode_now = 0;
        int err2;
 
-       current->flags |= PF_SYNCWRITE;
        if (what & OSYNC_DATA)
                err = filemap_fdatawrite(mapping);
        if (what & (OSYNC_METADATA|OSYNC_DATA)) {
@@ -632,7 +645,6 @@ int generic_osync_inode(struct inode *inode, struct address_space *mapping, int
                if (!err)
                        err = err2;
        }
-       current->flags &= ~PF_SYNCWRITE;
 
        spin_lock(&inode_lock);
        if ((inode->i_state & I_DIRTY) &&