Be more careful about marking buffers dirty

[linux.git] / fs / file.c

diff --git a/fs/file.c b/fs/file.c
index c5575de01113eb24aa182c77b35d46d0f0fced48..5110acb1c9ef59bb046a69f79fa601a07218b61a 100644 (file)
--- a/fs/file.c
+++ b/fs/file.c
@@ -24,6 +24,8 @@ struct fdtable_defer {
        struct fdtable *next;
 };
 
+int sysctl_nr_open __read_mostly = 1024*1024;
+
 /*
  * We use this list to defer free fdtables that have vmalloced
  * sets/arrays. By keeping a per-cpu list, we avoid having to embed
@@ -147,8 +149,8 @@ static struct fdtable * alloc_fdtable(unsigned int nr)
        nr /= (1024 / sizeof(struct file *));
        nr = roundup_pow_of_two(nr + 1);
        nr *= (1024 / sizeof(struct file *));
-       if (nr > NR_OPEN)
-               nr = NR_OPEN;
+       if (nr > sysctl_nr_open)
+               nr = sysctl_nr_open;
 
        fdt = kmalloc(sizeof(struct fdtable), GFP_KERNEL);
        if (!fdt)
@@ -233,7 +235,7 @@ int expand_files(struct files_struct *files, int nr)
        if (nr < fdt->max_fds)
                return 0;
        /* Can we expand? */
-       if (nr >= NR_OPEN)
+       if (nr >= sysctl_nr_open)
                return -EMFILE;
 
        /* All good, so we try */