repair sysv_write_inode(), switch sysv to simple_fsync()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

4 files changed, 18 insertions, 47 deletions

diff --git a/fs/sysv/dir.c b/fs/sysv/dir.c
index 56f655254bfe..c7798079e644 100644
--- a/fs/sysv/dir.c
+++ b/fs/sysv/dir.c
@@ -24,7 +24,7 @@ static int sysv_readdir(struct file *, void *, filldir_t);
 const struct file_operations sysv_dir_operations = {
         .read           = generic_read_dir,
         .readdir        = sysv_readdir,
-        .fsync          = sysv_sync_file,
+        .fsync          = simple_fsync,
 };
 
 static inline void dir_put_page(struct page *page)
diff --git a/fs/sysv/file.c b/fs/sysv/file.c
index 589be21d884e..96340c01f4a7 100644
--- a/fs/sysv/file.c
+++ b/fs/sysv/file.c
@@ -26,7 +26,7 @@ const struct file_operations sysv_file_operations = {
         .write          = do_sync_write,
         .aio_write      = generic_file_aio_write,
         .mmap           = generic_file_mmap,
-        .fsync          = sysv_sync_file,
+        .fsync          = simple_fsync,
         .splice_read    = generic_file_splice_read,
 };
 
@@ -34,18 +34,3 @@ const struct inode_operations sysv_file_inode_operations = {
         .truncate       = sysv_truncate,
         .getattr        = sysv_getattr,
 };
-
-int sysv_sync_file(struct file * file, struct dentry *dentry, int datasync)
-{
-        struct inode *inode = dentry->d_inode;
-        int err;
-
-        err = sync_mapping_buffers(inode->i_mapping);
-        if (!(inode->i_state & I_DIRTY))
-                return err;
-        if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))
-                return err;
-        
-        err |= sysv_sync_inode(inode);
-        return err ? -EIO : 0;
-}
diff --git a/fs/sysv/inode.c b/fs/sysv/inode.c
index a3f45fc626a1..425c976cfcd2 100644
--- a/fs/sysv/inode.c
+++ b/fs/sysv/inode.c
@@ -247,7 +247,7 @@ bad_inode:
         return ERR_PTR(-EIO);
 }
 
-static struct buffer_head * sysv_update_inode(struct inode * inode)
+int sysv_write_inode(struct inode *inode, int wait)
 {
         struct super_block * sb = inode->i_sb;
         struct sysv_sb_info * sbi = SYSV_SB(sb);
@@ -255,19 +255,21 @@ static struct buffer_head * sysv_update_inode(struct inode * inode)
         struct sysv_inode * raw_inode;
         struct sysv_inode_info * si;
         unsigned int ino, block;
+        int err = 0;
 
         ino = inode->i_ino;
         if (!ino || ino > sbi->s_ninodes) {
                 printk("Bad inode number on dev %s: %d is out of range\n",
                        inode->i_sb->s_id, ino);
-                return NULL;
+                return -EIO;
         }
         raw_inode = sysv_raw_inode(sb, ino, &bh);
         if (!raw_inode) {
                 printk("unable to read i-node block\n");
-                return NULL;
+                return -EIO;
         }
 
+        lock_kernel();
         raw_inode->i_mode = cpu_to_fs16(sbi, inode->i_mode);
         raw_inode->i_uid = cpu_to_fs16(sbi, fs_high2lowuid(inode->i_uid));
         raw_inode->i_gid = cpu_to_fs16(sbi, fs_high2lowgid(inode->i_gid));
@@ -283,38 +285,23 @@ static struct buffer_head * sysv_update_inode(struct inode * inode)
         for (block = 0; block < 10+1+1+1; block++)
                 write3byte(sbi, (u8 *)&si->i_data[block],
                         &raw_inode->i_data[3*block]);
+        unlock_kernel();
         mark_buffer_dirty(bh);
-        return bh;
-}
-
-int sysv_write_inode(struct inode * inode, int wait)
-{
-        struct buffer_head *bh;
-        lock_kernel();
-        bh = sysv_update_inode(inode);
+        if (wait) {
+                sync_dirty_buffer(bh);
+                if (buffer_req(bh) && !buffer_uptodate(bh)) {
+                        printk ("IO error syncing sysv inode [%s:%08x]\n",
+                                sb->s_id, ino);
+                        err = -EIO;
+                }
+        }
         brelse(bh);
-        unlock_kernel();
         return 0;
 }
 
-int sysv_sync_inode(struct inode * inode)
+int sysv_sync_inode(struct inode *inode)
 {
-        int err = 0;
-        struct buffer_head *bh;
-
-        bh = sysv_update_inode(inode);
-        if (bh && buffer_dirty(bh)) {
-                sync_dirty_buffer(bh);
-                if (buffer_req(bh) && !buffer_uptodate(bh)) {
-                        printk ("IO error syncing sysv inode [%s:%08lx]\n",
-                                inode->i_sb->s_id, inode->i_ino);
-                        err = -1;
-                }
-        }
-        else if (!bh)
-                err = -1;
-        brelse (bh);
-        return err;
+        return sysv_write_inode(inode, 1);
 }
 
 static void sysv_delete_inode(struct inode *inode)
diff --git a/fs/sysv/sysv.h b/fs/sysv/sysv.h
index 5784a318c883..53786eb5cf60 100644
--- a/fs/sysv/sysv.h
+++ b/fs/sysv/sysv.h
@@ -144,7 +144,6 @@ extern int __sysv_write_begin(struct file *file, struct address_space *mapping,
 extern struct inode *sysv_iget(struct super_block *, unsigned int);
 extern int sysv_write_inode(struct inode *, int);
 extern int sysv_sync_inode(struct inode *);
-extern int sysv_sync_file(struct file *, struct dentry *, int);
 extern void sysv_set_inode(struct inode *, dev_t);
 extern int sysv_getattr(struct vfsmount *, struct dentry *, struct kstat *);
 extern int sysv_init_icache(void);