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swapfile: fix name leak in swapoff

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There's a name leak introduced by commit 91a27b2a75 ("vfs: define
struct filename and have getname() return it").  Add the missing
putname.

[akpm@linux-foundation.org: cleanup]
Signed-off-by: Xiaotian Feng <dannyfeng@tencent.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Xiaotian Feng 2012-11-16 14:14:55 -08:00 committed by Linus Torvalds
parent bea8c150a7
commit f58b59c1df
1 changed files with 2 additions and 2 deletions
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4
mm/swapfile.c
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@ -1494,9 +1494,8 @@ SYSCALL_DEFINE1(swapoff, const char __user *, specialfile)
BUG_ON(!current->mm);
pathname = getname(specialfile);
err = PTR_ERR(pathname);
if (IS_ERR(pathname))
goto out;
return PTR_ERR(pathname);
victim = file_open_name(pathname, O_RDWR|O_LARGEFILE, 0);
err = PTR_ERR(victim);
@ -1608,6 +1607,7 @@ SYSCALL_DEFINE1(swapoff, const char __user *, specialfile)
out_dput:
filp_close(victim, NULL);
out:
putname(pathname);
return err;
}