Btrfs: inline csums if we're fsyncing

[firefly-linux-kernel-4.4.55.git] / fs / file.c

diff --git a/fs/file.c b/fs/file.c
index d3b5fa80b71b76a973919a6b9cfa2ebb34096adf..eff23162485f93176255199b3ed74176534ae489 100644 (file)
--- a/fs/file.c
+++ b/fs/file.c
@@ -685,7 +685,6 @@ void do_close_on_exec(struct files_struct *files)
        struct fdtable *fdt;
 
        /* exec unshares first */
-       BUG_ON(atomic_read(&files->count) != 1);
        spin_lock(&files->file_lock);
        for (i = 0; ; i++) {
                unsigned long set;
@@ -900,7 +899,7 @@ int replace_fd(unsigned fd, struct file *file, unsigned flags)
                return __close_fd(files, fd);
 
        if (fd >= rlimit(RLIMIT_NOFILE))
-               return -EMFILE;
+               return -EBADF;
 
        spin_lock(&files->file_lock);
        err = expand_files(files, fd);
@@ -926,7 +925,7 @@ SYSCALL_DEFINE3(dup3, unsigned int, oldfd, unsigned int, newfd, int, flags)
                return -EINVAL;
 
        if (newfd >= rlimit(RLIMIT_NOFILE))
-               return -EMFILE;
+               return -EBADF;
 
        spin_lock(&files->file_lock);
        err = expand_files(files, newfd);
@@ -995,16 +994,18 @@ int iterate_fd(struct files_struct *files, unsigned n,
                const void *p)
 {
        struct fdtable *fdt;
-       struct file *file;
        int res = 0;
        if (!files)
                return 0;
        spin_lock(&files->file_lock);
-       fdt = files_fdtable(files);
-       while (!res && n < fdt->max_fds) {
-               file = rcu_dereference_check_fdtable(files, fdt->fd[n++]);
-               if (file)
-                       res = f(p, file, n);
+       for (fdt = files_fdtable(files); n < fdt->max_fds; n++) {
+               struct file *file;
+               file = rcu_dereference_check_fdtable(files, fdt->fd[n]);
+               if (!file)
+                       continue;
+               res = f(p, file, n);
+               if (res)
+                       break;
        }
        spin_unlock(&files->file_lock);
        return res;