From: Miklos Szeredi mszeredi@redhat.com
commit df8629af293493757beccac2d3168fe5a315636e upstream.
Failure to do so may result in EEXIST even if the file only exists in the cache and not in the filesystem.
The atomic nature of O_EXCL mandates that the cached state should be ignored and existence verified anew.
Reported-by: Ken Schalk kschalk@nvidia.com Signed-off-by: Miklos Szeredi mszeredi@redhat.com Signed-off-by: Wu Bo bo.wu@vivo.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/fuse/dir.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/fuse/dir.c +++ b/fs/fuse/dir.c @@ -205,7 +205,7 @@ static int fuse_dentry_revalidate(struct if (inode && fuse_is_bad(inode)) goto invalid; else if (time_before64(fuse_dentry_time(entry), get_jiffies_64()) || - (flags & LOOKUP_REVAL)) { + (flags & (LOOKUP_EXCL | LOOKUP_REVAL))) { struct fuse_entry_out outarg; FUSE_ARGS(args); struct fuse_forget_link *forget;