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-rw-r--r--fs/open.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/open.c b/fs/open.c
index c4465b2f8441..631aea815def 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -728,6 +728,10 @@ static int do_dentry_open(struct file *f,
return 0;
}
+ /* POSIX.1-2008/SUSv4 Section XSI 2.9.7 */
+ if (S_ISREG(inode->i_mode))
+ f->f_mode |= FMODE_ATOMIC_POS;
+
f->f_op = fops_get(inode->i_fop);
if (unlikely(WARN_ON(!f->f_op))) {
error = -ENODEV;