From: Eric Biggers <ebiggers3@gmail.com>
Date: Sun, 16 Mar 2014 19:24:08 +0000 (-0500)
Subject: vfs: atomic f_pos access in llseek()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=d7a15f8d0777955986a2ab00ab181795cab14b01;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

vfs: atomic f_pos access in llseek()

Commit 9c225f2655e36a4 ("vfs: atomic f_pos accesses as per POSIX") changed
several system calls to use fdget_pos() instead of fdget(), but missed
sys_llseek().  Fix it.

Signed-off-by: Eric Biggers <ebiggers3@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/fs/read_write.c b/fs/read_write.c
index 54e19b9392dc..28cc9c810744 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -307,7 +307,7 @@ SYSCALL_DEFINE5(llseek, unsigned int, fd, unsigned long, offset_high,
 		unsigned int, whence)
 {
 	int retval;
-	struct fd f = fdget(fd);
+	struct fd f = fdget_pos(fd);
 	loff_t offset;
 
 	if (!f.file)
@@ -327,7 +327,7 @@ SYSCALL_DEFINE5(llseek, unsigned int, fd, unsigned long, offset_high,
 			retval = 0;
 	}
 out_putf:
-	fdput(f);
+	fdput_pos(f);
 	return retval;
 }
 #endif