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authorDave Hansen <haveblue@us.ibm.com>2008-02-15 23:37:43 +0100
committerAl Viro <viro@zeniv.linux.org.uk>2008-04-19 06:29:24 +0200
commit20ddee2c75339cc095f6191c3115f81da8955e96 (patch)
treede675e92d25f9946026132ac634c08f1c6e87916 /fs
parent[PATCH] r/o bind mounts: elevate write count for do_utimes() (diff)
downloadlinux-20ddee2c75339cc095f6191c3115f81da8955e96.tar.xz
linux-20ddee2c75339cc095f6191c3115f81da8955e96.zip
[PATCH] r/o bind mounts: write count for file_update_time()
Acked-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs')
-rw-r--r--fs/inode.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/inode.c b/fs/inode.c
index 6f6250c08ce6..27ee1af50d02 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -1250,10 +1250,13 @@ void file_update_time(struct file *file)
struct inode *inode = file->f_path.dentry->d_inode;
struct timespec now;
int sync_it = 0;
+ int err;
if (IS_NOCMTIME(inode))
return;
- if (IS_RDONLY(inode))
+
+ err = mnt_want_write(file->f_path.mnt);
+ if (err)
return;
now = current_fs_time(inode->i_sb);
@@ -1274,6 +1277,7 @@ void file_update_time(struct file *file)
if (sync_it)
mark_inode_dirty_sync(inode);
+ mnt_drop_write(file->f_path.mnt);
}
EXPORT_SYMBOL(file_update_time);