The patch titled
r/o bind mounts: do_rmdir(): elevate write count
has been removed from the -mm tree. Its filename was
r-o-bind-mounts-do_rmdir-elevate-write-count.patch
This patch was dropped because it had testing failures
------------------------------------------------------
Subject: r/o bind mounts: do_rmdir(): elevate write count
From: Dave Hansen <hansendc@xxxxxxxxxx>
Elevate the write count during the vfs_rmdir() call.
Signed-off-by: Dave Hansen <haveblue@xxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Cc: Miklos Szeredi <miklos@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/namei.c | 5 +++++
1 file changed, 5 insertions(+)
diff -puN fs/namei.c~r-o-bind-mounts-do_rmdir-elevate-write-count fs/namei.c
--- a/fs/namei.c~r-o-bind-mounts-do_rmdir-elevate-write-count
+++ a/fs/namei.c
@@ -2095,7 +2095,12 @@ 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 hansendc@xxxxxxxxxx are
r-o-bind-mounts-do_rmdir-elevate-write-count.patch
r-o-bind-mounts-elevate-writer-count-for-custom-struct_file.patch
r-o-bind-mounts-remove-is_rdonly-from-permission.patch
r-o-bind-mounts-reiser4-remove-is_rdonly-checks.patch
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