The patch titled
r/o bind mounts: do_rmdir(): elevate write count
has been removed from the -mm tree. Its filename is
ro-bind-mounts-do_rmdir-elevate-write-count.patch
This patch was dropped because Viro's comments sounded rather serious
------------------------------------------------------
Subject: r/o bind mounts: do_rmdir(): elevate write count
From: Dave Hansen <haveblue@xxxxxxxxxx>
Elevate the write count during the vfs_rmdir() call.
Signed-off-by: Dave Hansen <haveblue@xxxxxxxxxx>
Cc: Serge Hallyn <serue@xxxxxxxxxx>
Cc: Herbert Poetzl <herbert@xxxxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
fs/namei.c | 5 +++++
1 file changed, 5 insertions(+)
diff -puN fs/namei.c~ro-bind-mounts-do_rmdir-elevate-write-count fs/namei.c
--- a/fs/namei.c~ro-bind-mounts-do_rmdir-elevate-write-count
+++ a/fs/namei.c
@@ -2078,7 +2078,12 @@ static long do_rmdir(int dfd, const char
error = PTR_ERR(dentry);
if (IS_ERR(dentry))
goto exit2;
+ error = mnt_want_write(nd.mnt);
+ if (error)
+ goto exit3;
error = vfs_rmdir(nd.dentry->d_inode, dentry);
+ mnt_drop_write(nd.mnt);
+exit3:
dput(dentry);
exit2:
mutex_unlock(&nd.dentry->d_inode->i_mutex);
_
Patches currently in -mm which might be from haveblue@xxxxxxxxxx are
origin.patch
git-acpi.patch
ro-bind-mounts-do_rmdir-elevate-write-count.patch
ro-bind-mounts-elevate-writer-count-for-custom-struct-file.patch
ro-bind-mounts-honor-r-w-changes-at-do_remount-time.patch
page-owner-tracking-leak-detector.patch
x86-e820-debugging.patch
-
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