LU-10092 llite: Add persistent cache on client

[fs/lustre-release.git] / lustre / llite / llite_mmap.c

diff --git a/lustre/llite/llite_mmap.c b/lustre/llite/llite_mmap.c
index 989a53b..65e4af6 100644 (file)
--- a/lustre/llite/llite_mmap.c
+++ b/lustre/llite/llite_mmap.c
@@ -504,18 +504,27 @@ int ll_file_mmap(struct file *file, struct vm_area_struct * vma)
 {
        struct inode *inode = file_inode(file);
         int rc;
+       struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
+       struct file *pcc_file = fd->fd_pcc_file.pccf_file;
+
         ENTRY;
 
+       /* pcc cache path */
+       if (pcc_file) {
+               vma->vm_file = pcc_file;
+               return file_inode(pcc_file)->i_fop->mmap(pcc_file, vma);
+       }
+
         if (ll_file_nolock(file))
                 RETURN(-EOPNOTSUPP);
 
         ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_MAP, 1);
         rc = generic_file_mmap(file, vma);
         if (rc == 0) {
-                vma->vm_ops = &ll_file_vm_ops;
+               vma->vm_ops = &ll_file_vm_ops;
                 vma->vm_ops->open(vma);
                 /* update the inode's size and mtime */
-                rc = ll_glimpse_size(inode);
+               rc = ll_glimpse_size(inode);
         }
 
         RETURN(rc);