[PATCH] msync(): use do_fsync()

No need to duplicate all that code.

Cc: Hugh Dickins <hugh@veritas.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 2 insertions, 15 deletions

diff --git a/mm/msync.c b/mm/msync.c
index d6a50f3f28b6..2672b8dc3d89 100644
--- a/mm/msync.c
+++ b/mm/msync.c
@@ -9,6 +9,7 @@
  */
 #include <linux/slab.h>
 #include <linux/pagemap.h>
+#include <linux/fs.h>
 #include <linux/mm.h>
 #include <linux/mman.h>
 #include <linux/hugetlb.h>
@@ -214,23 +215,9 @@ asmlinkage long sys_msync(unsigned long start, size_t len, int flags)
                         vma = find_vma(current->mm, start);
                 } else if ((flags & MS_SYNC) && file &&
                                 (vma->vm_flags & VM_SHARED)) {
-                        struct address_space *mapping;
-                        int err;
-
                         get_file(file);
                         up_read(&current->mm->mmap_sem);
-                        mapping = file->f_mapping;
-                        error = filemap_fdatawrite(mapping);
-                        if (file->f_op && file->f_op->fsync) {
-                                mutex_lock(&mapping->host->i_mutex);
-                                err = file->f_op->fsync(file,file->f_dentry,1);
-                                mutex_unlock(&mapping->host->i_mutex);
-                                if (err && !error)
-                                        error = err;
-                        }
-                        err = filemap_fdatawait(mapping);
-                        if (err && !error)
-                                error = err;
+                        error = do_fsync(file, 0);
                         fput(file);
                         down_read(&current->mm->mmap_sem);
                         if (error)