[PATCH] mark struct file_operations const 9

Many struct file_operations in the kernel can be "const".  Marking them const
moves these to the .rodata section, which avoids false sharing with potential
dirty data.  In addition it'll catch accidental writes at compile time to
these shared resources.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

3 files changed, 3 insertions, 3 deletions

diff --git a/sound/oss/emu10k1/audio.c b/sound/oss/emu10k1/audio.c
index efcf589d7083..e75ea21eb811 100644
--- a/sound/oss/emu10k1/audio.c
+++ b/sound/oss/emu10k1/audio.c
@@ -1582,7 +1582,7 @@ static void emu10k1_waveout_bh(unsigned long refdata)
         return;
 }
 
-struct file_operations emu10k1_audio_fops = {
+const struct file_operations emu10k1_audio_fops = {
         .owner          = THIS_MODULE,
         .llseek         = no_llseek,
         .read           = emu10k1_audio_read,
diff --git a/sound/oss/emu10k1/midi.c b/sound/oss/emu10k1/midi.c
index cca3dad2bdf4..df1e990449a0 100644
--- a/sound/oss/emu10k1/midi.c
+++ b/sound/oss/emu10k1/midi.c
@@ -458,7 +458,7 @@ int emu10k1_midi_callback(unsigned long msg, unsigned long refdata, unsigned lon
 }
 
 /* MIDI file operations */
-struct file_operations emu10k1_midi_fops = {
+const struct file_operations emu10k1_midi_fops = {
         .owner          = THIS_MODULE,
         .read           = emu10k1_midi_read,
         .write          = emu10k1_midi_write,
diff --git a/sound/oss/emu10k1/mixer.c b/sound/oss/emu10k1/mixer.c
index 6419796c2ed7..bc3805fb0701 100644
--- a/sound/oss/emu10k1/mixer.c
+++ b/sound/oss/emu10k1/mixer.c
@@ -681,7 +681,7 @@ static int emu10k1_mixer_release(struct inode *inode, struct file *file)
         return 0;
 }
 
-struct file_operations emu10k1_mixer_fops = {
+const struct file_operations emu10k1_mixer_fops = {
         .owner          = THIS_MODULE,
         .llseek         = no_llseek,
         .ioctl          = emu10k1_mixer_ioctl,