Driver: spi: fix compiling err for rk3288

[firefly-linux-kernel-4.4.55.git] / fs / coredump.c

diff --git a/fs/coredump.c b/fs/coredump.c
index 5d15c4975ba14f31b32439259780ee8e42681e40..2ce5ef429c48c22fe8eaaabaa9f1201bf7c19102 100644 (file)
--- a/fs/coredump.c
+++ b/fs/coredump.c
@@ -720,7 +720,7 @@ void do_coredump(const siginfo_t *siginfo)
                        goto close_fail;
                if (!(cprm.file->f_mode & FMODE_CAN_WRITE))
                        goto close_fail;
-               if (do_truncate(cprm.file->f_path.dentry, 0, 0, cprm.file))
+               if (do_truncate2(cprm.file->f_path.mnt, cprm.file->f_path.dentry, 0, 0, cprm.file))
                        goto close_fail;
        }
 
@@ -810,3 +810,21 @@ int dump_align(struct coredump_params *cprm, int align)
        return mod ? dump_skip(cprm, align - mod) : 1;
 }
 EXPORT_SYMBOL(dump_align);
+
+/*
+ * Ensures that file size is big enough to contain the current file
+ * postion. This prevents gdb from complaining about a truncated file
+ * if the last "write" to the file was dump_skip.
+ */
+void dump_truncate(struct coredump_params *cprm)
+{
+       struct file *file = cprm->file;
+       loff_t offset;
+
+       if (file->f_op->llseek && file->f_op->llseek != no_llseek) {
+               offset = file->f_op->llseek(file, 0, SEEK_CUR);
+               if (i_size_read(file->f_mapping->host) < offset)
+                       do_truncate(file->f_path.dentry, offset, 0, file);
+       }
+}
+EXPORT_SYMBOL(dump_truncate);