pass writeback_control to ->write_inode

This gives the filesystem more information about the writeback that
is happening.  Trond requested this for the NFS unstable write handling,
and other filesystems might benefit from this too by beeing able to
distinguish between the different callers in more detail.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

2 files changed, 4 insertions, 4 deletions

diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 4cedc91ec59d..50af1a2c65e7 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1416,7 +1416,7 @@ int ext4_get_block(struct inode *inode, sector_t iblock,
                                 struct buffer_head *bh_result, int create);
 
 extern struct inode *ext4_iget(struct super_block *, unsigned long);
-extern int  ext4_write_inode(struct inode *, int);
+extern int  ext4_write_inode(struct inode *, struct writeback_control *);
 extern int  ext4_setattr(struct dentry *, struct iattr *);
 extern int  ext4_getattr(struct vfsmount *mnt, struct dentry *dentry,
                                 struct kstat *stat);
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index e11952404e02..d01a6cdbf854 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -5177,7 +5177,7 @@ out_brelse:
  * `stuff()' is running, and the new i_size will be lost.  Plus the inode
  * will no longer be on the superblock's dirty inode list.
  */
-int ext4_write_inode(struct inode *inode, int wait)
+int ext4_write_inode(struct inode *inode, struct writeback_control *wbc)
 {
         int err;
 
@@ -5191,7 +5191,7 @@ int ext4_write_inode(struct inode *inode, int wait)
                         return -EIO;
                 }
 
-                if (!wait)
+                if (wbc->sync_mode != WB_SYNC_ALL)
                         return 0;
 
                 err = ext4_force_commit(inode->i_sb);
@@ -5201,7 +5201,7 @@ int ext4_write_inode(struct inode *inode, int wait)
                 err = ext4_get_inode_loc(inode, &iloc);
                 if (err)
                         return err;
-                if (wait)
+                if (wbc->sync_mode == WB_SYNC_ALL)
                         sync_dirty_buffer(iloc.bh);
                 if (buffer_req(iloc.bh) && !buffer_uptodate(iloc.bh)) {
                         ext4_error(inode->i_sb, __func__,