Messages in this thread Patch in this message | | | Subject | [RFC][PATCH 17/20] elevate mnt writers for vfs_unlink() callers | From | Dave Hansen <> | Date | Fri, 16 Jun 2006 16:12:26 -0700 |
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Signed-off-by: Dave Hansen <haveblue@us.ibm.com> ---
lxc-dave/fs/namei.c | 4 ++++ lxc-dave/ipc/mqueue.c | 5 ++++- 2 files changed, 8 insertions(+), 1 deletion(-)
diff -puN fs/namei.c~C-elevate-writers-vfs_unlink fs/namei.c --- lxc/fs/namei.c~C-elevate-writers-vfs_unlink 2006-06-16 15:58:10.000000000 -0700 +++ lxc-dave/fs/namei.c 2006-06-16 15:58:10.000000000 -0700 @@ -2136,7 +2136,11 @@ static long do_unlinkat(int dfd, const c inode = dentry->d_inode; if (inode) atomic_inc(&inode->i_count); + error = mnt_want_write(nd.mnt); + if (error) + goto exit2; error = vfs_unlink(nd.dentry->d_inode, dentry); + mnt_drop_write(nd.mnt); exit2: dput(dentry); } diff -puN ipc/mqueue.c~C-elevate-writers-vfs_unlink ipc/mqueue.c --- lxc/ipc/mqueue.c~C-elevate-writers-vfs_unlink 2006-06-16 15:58:10.000000000 -0700 +++ lxc-dave/ipc/mqueue.c 2006-06-16 15:58:10.000000000 -0700 @@ -741,8 +741,11 @@ asmlinkage long sys_mq_unlink(const char inode = dentry->d_inode; if (inode) atomic_inc(&inode->i_count); - + err = mnt_want_write(mqueue_mnt); + if (err) + goto out_err; err = vfs_unlink(dentry->d_parent->d_inode, dentry); + mnt_drop_write(mqueue_mnt); out_err: dput(dentry); _ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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