From: Dave Hansen <haveblue@us.ibm.com>
To: linux-kernel@vger.kernel.org
Cc: linux-fsdevel@vger.kernel.org, viro@zeniv.linux.org.uk,
hch@infradead.org, Dave Hansen <haveblue@us.ibm.com>
Subject: [PATCH 09/23] elevate mnt writers for callers of vfs_mkdir()
Date: Wed, 11 Jul 2007 17:17:22 -0700 [thread overview]
Message-ID: <20070712001722.4068399A@kernel> (raw)
In-Reply-To: <20070712001710.654CD9ED@kernel>
Pretty self-explanatory. Fits in with the rest of the series.
Signed-off-by: Dave Hansen <haveblue@us.ibm.com>
---
lxc-dave/fs/namei.c | 5 +++++
lxc-dave/fs/nfsd/nfs4recover.c | 4 ++++
2 files changed, 9 insertions(+)
diff -puN fs/namei.c~elevate-mnt-writers-for-callers-of-vfs-mkdir fs/namei.c
--- lxc/fs/namei.c~elevate-mnt-writers-for-callers-of-vfs-mkdir 2007-07-10 12:46:07.000000000 -0700
+++ lxc-dave/fs/namei.c 2007-07-10 12:46:07.000000000 -0700
@@ -1993,7 +1993,12 @@ asmlinkage long sys_mkdirat(int dfd, con
if (!IS_POSIXACL(nd.dentry->d_inode))
mode &= ~current->fs->umask;
+ error = mnt_want_write(nd.mnt);
+ if (error)
+ goto out_dput;
error = vfs_mkdir(nd.dentry->d_inode, dentry, mode);
+ mnt_drop_write(nd.mnt);
+out_dput:
dput(dentry);
out_unlock:
mutex_unlock(&nd.dentry->d_inode->i_mutex);
diff -puN fs/nfsd/nfs4recover.c~elevate-mnt-writers-for-callers-of-vfs-mkdir fs/nfsd/nfs4recover.c
--- lxc/fs/nfsd/nfs4recover.c~elevate-mnt-writers-for-callers-of-vfs-mkdir 2007-07-10 12:46:07.000000000 -0700
+++ lxc-dave/fs/nfsd/nfs4recover.c 2007-07-10 12:46:07.000000000 -0700
@@ -156,7 +156,11 @@ nfsd4_create_clid_dir(struct nfs4_client
dprintk("NFSD: nfsd4_create_clid_dir: DIRECTORY EXISTS\n");
goto out_put;
}
+ status = mnt_want_write(rec_dir.mnt);
+ if (status)
+ goto out_put;
status = vfs_mkdir(rec_dir.dentry->d_inode, dentry, S_IRWXU);
+ mnt_drop_write(rec_dir.mnt);
out_put:
dput(dentry);
out_unlock:
_
next prev parent reply other threads:[~2007-07-12 0:17 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-12 0:17 [PATCH 00/23] Mount writer count API (read-only bind mounts prep) Dave Hansen
2007-07-12 0:17 ` [PATCH 01/23] rearrange may_open() to be r/o friendly Dave Hansen
2007-07-12 0:17 ` [PATCH 02/23] create cleanup helper svc_msnfs() Dave Hansen
2007-07-12 0:17 ` [PATCH 03/23] filesystem helpers for custom 'struct file's Dave Hansen
2007-07-12 0:17 ` [PATCH 04/23] r/o bind mounts: stub functions Dave Hansen
2007-07-12 0:17 ` [PATCH 05/23] elevate write count open()'d files Dave Hansen
2007-07-12 0:17 ` [PATCH 06/23] r/o bind mounts: elevate write count for some ioctls Dave Hansen
2007-07-12 0:17 ` [PATCH 07/23] elevate writer count for chown and friends Dave Hansen
2007-07-12 0:17 ` [PATCH 08/23] make access() use mnt check Dave Hansen
2007-07-12 0:17 ` Dave Hansen [this message]
2007-07-12 0:17 ` [PATCH 10/23] elevate write count during entire ncp_ioctl() Dave Hansen
2007-07-12 0:17 ` [PATCH 11/23] elevate write count for link and symlink calls Dave Hansen
2007-07-12 0:17 ` [PATCH 12/23] elevate mount count for extended attributes Dave Hansen
2007-07-12 0:17 ` [PATCH 13/23] elevate write count for file_update_time() Dave Hansen
2007-07-12 0:17 ` [PATCH 14/23] mount_is_safe(): add comment Dave Hansen
2007-07-12 0:17 ` [PATCH 15/23] unix_find_other() elevate write count for touch_atime() Dave Hansen
2007-07-12 0:17 ` [PATCH 16/23] elevate write count over calls to vfs_rename() Dave Hansen
2007-07-12 0:17 ` [PATCH 17/23] nfs: check mnt instead of superblock directly Dave Hansen
2007-07-12 0:17 ` [PATCH 18/23] elevate writer count for do_sys_truncate() Dave Hansen
2007-07-12 0:17 ` [PATCH 19/23] elevate write count for do_utimes() Dave Hansen
2007-07-12 0:17 ` [PATCH 20/23] elevate write count for do_sys_utime() and touch_atime() Dave Hansen
2007-07-12 0:17 ` [PATCH 21/23] sys_mknodat(): elevate write count for vfs_mknod/create() Dave Hansen
2007-07-12 0:17 ` [PATCH 22/23] elevate mnt writers for vfs_unlink() callers Dave Hansen
2007-07-12 0:17 ` [PATCH 23/23] do_rmdir(): elevate write count Dave Hansen
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