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authorTrond Myklebust <trond.myklebust@primarydata.com>2015-02-18 07:28:37 -0800
committerTrond Myklebust <trond.myklebust@primarydata.com>2015-02-18 07:28:37 -0800
commit65d2918e716afb89359cfa59734d76c1ff8700cb (patch)
tree4685404f96642243d62c3a1a823340913d087090 /fs/char_dev.c
parentbf40e5561fd288a505d5d8d8bf45eef96fe7253d (diff)
parent338d00cfef07d74a072f96821c64b20f98517d72 (diff)
downloadop-kernel-dev-65d2918e716afb89359cfa59734d76c1ff8700cb.zip
op-kernel-dev-65d2918e716afb89359cfa59734d76c1ff8700cb.tar.gz
Merge branch 'cleanups'
Merge cleanups requested by Linus. * cleanups: (3 commits) pnfs: Refactor the *_layout_mark_request_commit to use pnfs_layout_mark_request_commit nfs: Can call nfs_clear_page_commit() instead nfs: Provide and use helper functions for marking a page as unstable
Diffstat (limited to 'fs/char_dev.c')
-rw-r--r--fs/char_dev.c24
1 files changed, 0 insertions, 24 deletions
diff --git a/fs/char_dev.c b/fs/char_dev.c
index 67b2007..ea06a3d 100644
--- a/fs/char_dev.c
+++ b/fs/char_dev.c
@@ -24,27 +24,6 @@
#include "internal.h"
-/*
- * capabilities for /dev/mem, /dev/kmem and similar directly mappable character
- * devices
- * - permits shared-mmap for read, write and/or exec
- * - does not permit private mmap in NOMMU mode (can't do COW)
- * - no readahead or I/O queue unplugging required
- */
-struct backing_dev_info directly_mappable_cdev_bdi = {
- .name = "char",
- .capabilities = (
-#ifdef CONFIG_MMU
- /* permit private copies of the data to be taken */
- BDI_CAP_MAP_COPY |
-#endif
- /* permit direct mmap, for read, write or exec */
- BDI_CAP_MAP_DIRECT |
- BDI_CAP_READ_MAP | BDI_CAP_WRITE_MAP | BDI_CAP_EXEC_MAP |
- /* no writeback happens */
- BDI_CAP_NO_ACCT_AND_WRITEBACK),
-};
-
static struct kobj_map *cdev_map;
static DEFINE_MUTEX(chrdevs_lock);
@@ -575,8 +554,6 @@ static struct kobject *base_probe(dev_t dev, int *part, void *data)
void __init chrdev_init(void)
{
cdev_map = kobj_map_init(base_probe, &chrdevs_lock);
- if (bdi_init(&directly_mappable_cdev_bdi))
- panic("Failed to init directly mappable cdev bdi");
}
@@ -590,4 +567,3 @@ EXPORT_SYMBOL(cdev_del);
EXPORT_SYMBOL(cdev_add);
EXPORT_SYMBOL(__register_chrdev);
EXPORT_SYMBOL(__unregister_chrdev);
-EXPORT_SYMBOL(directly_mappable_cdev_bdi);
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