exfat: flush dirty metadata in fsync

[linux-block.git] / fs / exfat / file.c

diff --git a/fs/exfat/file.c b/fs/exfat/file.c
index fce03f31878735e1fa389231abc1052f24447146..3b7fea465fd41e2859a94afac61dd9768a9f3119 100644 (file)
--- a/fs/exfat/file.c
+++ b/fs/exfat/file.c
@@ -6,6 +6,7 @@
 #include <linux/slab.h>
 #include <linux/cred.h>
 #include <linux/buffer_head.h>
+#include <linux/blkdev.h>
 
 #include "exfat_raw.h"
 #include "exfat_fs.h"
@@ -346,12 +347,28 @@ out:
        return error;
 }
 
+int exfat_file_fsync(struct file *filp, loff_t start, loff_t end, int datasync)
+{
+       struct inode *inode = filp->f_mapping->host;
+       int err;
+
+       err = __generic_file_fsync(filp, start, end, datasync);
+       if (err)
+               return err;
+
+       err = sync_blockdev(inode->i_sb->s_bdev);
+       if (err)
+               return err;
+
+       return blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL);
+}
+
 const struct file_operations exfat_file_operations = {
        .llseek         = generic_file_llseek,
        .read_iter      = generic_file_read_iter,
        .write_iter     = generic_file_write_iter,
        .mmap           = generic_file_mmap,
-       .fsync          = generic_file_fsync,
+       .fsync          = exfat_file_fsync,
        .splice_read    = generic_file_splice_read,
        .splice_write   = iter_file_splice_write,
 };