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authorEric W. Biederman <ebiederm@xmission.com>2021-06-29 15:11:44 -0500
committerEric W. Biederman <ebiederm@xmission.com>2021-07-12 15:17:47 -0500
commitb48c7236b13cb5ef1b5fdf744aa8841df0f7b43a (patch)
tree51f6b8e92bfc09e9472d82e488f9441217d56aaa /fs/buffer.c
parente73f0f0ee7541171d89f2e2491130c7771ba58d3 (diff)
downloadlwn-b48c7236b13cb5ef1b5fdf744aa8841df0f7b43a.tar.gz
lwn-b48c7236b13cb5ef1b5fdf744aa8841df0f7b43a.zip
exit/bdflush: Remove the deprecated bdflush system call
The bdflush system call has been deprecated for a very long time. Recently Michael Schmitz tested[1] and found that the last known caller of of the bdflush system call is unaffected by it's removal. Since the code is not needed delete it. [1] https://lkml.kernel.org/r/36123b5d-daa0-6c2b-f2d4-a942f069fd54@gmail.com Link: https://lkml.kernel.org/r/87sg10quue.fsf_-_@disp2133 Tested-by: Michael Schmitz <schmitzmic@gmail.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Cyril Hrubis <chrubis@suse.cz> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'fs/buffer.c')
-rw-r--r--fs/buffer.c27
1 files changed, 0 insertions, 27 deletions
diff --git a/fs/buffer.c b/fs/buffer.c
index 6290c3afdba4..32718ee13b08 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -3268,33 +3268,6 @@ out:
EXPORT_SYMBOL(try_to_free_buffers);
/*
- * There are no bdflush tunables left. But distributions are
- * still running obsolete flush daemons, so we terminate them here.
- *
- * Use of bdflush() is deprecated and will be removed in a future kernel.
- * The `flush-X' kernel threads fully replace bdflush daemons and this call.
- */
-SYSCALL_DEFINE2(bdflush, int, func, long, data)
-{
- static int msg_count;
-
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- if (msg_count < 5) {
- msg_count++;
- printk(KERN_INFO
- "warning: process `%s' used the obsolete bdflush"
- " system call\n", current->comm);
- printk(KERN_INFO "Fix your initscripts?\n");
- }
-
- if (func == 1)
- do_exit(0);
- return 0;
-}
-
-/*
* Buffer-head allocation
*/
static struct kmem_cache *bh_cachep __read_mostly;