diff --git a/lustre/include/linux/lustre_fsfilt.h b/lustre/include/linux/lustre_fsfilt.h
index 354b45ad9d760b4cd48adcb7fe022be59bfad92e..a95cc61f4700713399d43e81d4c33f6c6203066e 100644
--- a/lustre/include/linux/lustre_fsfilt.h
+++ b/lustre/include/linux/lustre_fsfilt.h
@@ -92,8 +92,6 @@ struct fsfilt_operations {
                                        int pages, unsigned long *blocks,
                                        int *created, int create,
                                        struct semaphore *sem);
-        int     (* fs_prep_san_write)(struct inode *inode, long *blocks,
-                                      int nblocks, loff_t newsize);
         int     (* fs_write_record)(struct file *, void *, int size, loff_t *,
                                     int force_sync);
         int     (* fs_read_record)(struct file *, void *, int size, loff_t *);
@@ -432,13 +430,6 @@ static inline int fsfilt_map_inode_pages(struct obd_device *obd,
                                                   created, create, sem);
 }
 
-static inline int fs_prep_san_write(struct obd_device *obd, struct inode *inode,
-                                    long *blocks, int nblocks, loff_t newsize)
-{
-        return obd->obd_fsops->fs_prep_san_write(inode, blocks,
-                                                 nblocks, newsize);
-}
-
 static inline int fsfilt_read_record(struct obd_device *obd, struct file *file,
                                      void *buf, loff_t size, loff_t *offs)
 {
diff --git a/lustre/lvfs/fsfilt_ext3.c b/lustre/lvfs/fsfilt_ext3.c
index f00508925e1643e860f3522f68d2024f40c89cf9..90c92ac63ceb2af487229437fff506700fab4567 100644
--- a/lustre/lvfs/fsfilt_ext3.c
+++ b/lustre/lvfs/fsfilt_ext3.c
@@ -1196,14 +1196,6 @@ int fsfilt_ext3_map_inode_pages(struct inode *inode, struct page **page,
         return rc;
 }
 
-extern int ext3_prep_san_write(struct inode *inode, long *blocks,
-                               int nblocks, loff_t newsize);
-static int fsfilt_ext3_prep_san_write(struct inode *inode, long *blocks,
-                                      int nblocks, loff_t newsize)
-{
-        return ext3_prep_san_write(inode, blocks, nblocks, newsize);
-}
-
 static int fsfilt_ext3_read_record(struct file * file, void *buf,
                                    int size, loff_t *offs)
 {
@@ -2098,7 +2090,6 @@ static struct fsfilt_operations fsfilt_ext3_ops = {
         .fs_statfs              = fsfilt_ext3_statfs,
         .fs_sync                = fsfilt_ext3_sync,
         .fs_map_inode_pages     = fsfilt_ext3_map_inode_pages,
-        .fs_prep_san_write      = fsfilt_ext3_prep_san_write,
         .fs_write_record        = fsfilt_ext3_write_record,
         .fs_read_record         = fsfilt_ext3_read_record,
         .fs_setup               = fsfilt_ext3_setup,