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vfs: ftruncate check IS_APPEND() on real upper inode
[linux-block.git]
/
fs
/
open.c
diff --git
a/fs/open.c
b/fs/open.c
index 949cef29c3bba9395efd2e461d2078d0a9a9b47c..993a91d20cc7b19f86e471f17ff1ab457dcc1717 100644
(file)
--- a/
fs/open.c
+++ b/
fs/open.c
@@
-193,7
+193,8
@@
static long do_sys_ftruncate(unsigned int fd, loff_t length, int small)
goto out_putf;
error = -EPERM;
- if (IS_APPEND(inode))
+ /* Check IS_APPEND on real upper inode */
+ if (IS_APPEND(file_inode(f.file)))
goto out_putf;
sb_start_write(inode->i_sb);