LU-17634 hsm: serialize HSM restore for a file on a client

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

diff --git a/lustre/llite/file.c b/lustre/llite/file.c
index aa7b73e..6260687 100644 (file)
--- a/lustre/llite/file.c
+++ b/lustre/llite/file.c
@@ -6579,8 +6579,10 @@ int ll_layout_write_intent(struct inode *inode, enum layout_intent_opc opc,
  */
 int ll_layout_restore(struct inode *inode, loff_t offset, __u64 length)
 {
-       struct hsm_user_request *hur;
-       int                      len, rc;
+       struct ll_inode_info *lli = ll_i2info(inode);
+       struct hsm_user_request *hur;
+       int len, rc;
+
        ENTRY;
 
        len = sizeof(struct hsm_user_request) +
@@ -6597,8 +6599,13 @@ int ll_layout_restore(struct inode *inode, loff_t offset, __u64 length)
        hur->hur_user_item[0].hui_extent.offset = offset;
        hur->hur_user_item[0].hui_extent.length = length;
        hur->hur_request.hr_itemcount = 1;
+       rc = mutex_lock_interruptible(&lli->lli_layout_mutex);
+       if (rc)
+               GOTO(out_free, rc);
        rc = obd_iocontrol(LL_IOC_HSM_REQUEST, ll_i2sbi(inode)->ll_md_exp,
                           len, hur, NULL);
+       mutex_unlock(&lli->lli_layout_mutex);
+out_free:
        OBD_FREE(hur, len);
        RETURN(rc);
 }