The patch titled
spufs: make signal-notification files readonly for NOSCHED contexts
has been removed from the -mm tree. Its filename was
spufs-make-signal-notification-files-readonly-for-nosched-contexts.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: spufs: make signal-notification files readonly for NOSCHED contexts
From: Jeremy Kerr <jk@xxxxxxxxxx>
Reading from the signal{1,2} files requires a spu_acquire_saved, so make these
files write-only for contexts created with SPU_CREATE_NOSCHED.
Signed-off-by: Jeremy Kerr <jk@xxxxxxxxxx>
Acked-by: Arnd Bergmann <arnd.bergmann@xxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/powerpc/platforms/cell/spufs/file.c | 18 ++++++++++++++++--
1 file changed, 16 insertions(+), 2 deletions(-)
diff -puN arch/powerpc/platforms/cell/spufs/file.c~spufs-make-signal-notification-files-readonly-for-nosched-contexts arch/powerpc/platforms/cell/spufs/file.c
--- a/arch/powerpc/platforms/cell/spufs/file.c~spufs-make-signal-notification-files-readonly-for-nosched-contexts
+++ a/arch/powerpc/platforms/cell/spufs/file.c
@@ -941,6 +941,13 @@ static const struct file_operations spuf
.mmap = spufs_signal1_mmap,
};
+static const struct file_operations spufs_signal1_nosched_fops = {
+ .open = spufs_signal1_open,
+ .release = spufs_signal1_release,
+ .write = spufs_signal1_write,
+ .mmap = spufs_signal1_mmap,
+};
+
static int spufs_signal2_open(struct inode *inode, struct file *file)
{
struct spufs_inode_info *i = SPUFS_I(inode);
@@ -1076,6 +1083,13 @@ static const struct file_operations spuf
.mmap = spufs_signal2_mmap,
};
+static const struct file_operations spufs_signal2_nosched_fops = {
+ .open = spufs_signal2_open,
+ .release = spufs_signal2_release,
+ .write = spufs_signal2_write,
+ .mmap = spufs_signal2_mmap,
+};
+
static void spufs_signal1_type_set(void *data, u64 val)
{
struct spu_context *ctx = data;
@@ -2177,8 +2191,8 @@ struct tree_descr spufs_dir_contents[] =
{ "mbox_stat", &spufs_mbox_stat_fops, 0444, },
{ "ibox_stat", &spufs_ibox_stat_fops, 0444, },
{ "wbox_stat", &spufs_wbox_stat_fops, 0444, },
- { "signal1", &spufs_signal1_fops, 0666, },
- { "signal2", &spufs_signal2_fops, 0666, },
+ { "signal1", &spufs_signal1_nosched_fops, 0222, },
+ { "signal2", &spufs_signal2_nosched_fops, 0222, },
{ "signal1_type", &spufs_signal1_type, 0666, },
{ "signal2_type", &spufs_signal2_type, 0666, },
{ "cntl", &spufs_cntl_fops, 0666, },
_
Patches currently in -mm which might be from jk@xxxxxxxxxx are
-
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