kernel: remove linux 4.1 support

[openwrt/openwrt.git] / target / linux / generic / patches-4.1 / 903-debloat_direct_io.patch

diff --git a/target/linux/generic/patches-4.1/903-debloat_direct_io.patch b/target/linux/generic/patches-4.1/903-debloat_direct_io.patch
deleted file mode 100644 (file)
index 92e36f0..0000000
--- a/target/linux/generic/patches-4.1/903-debloat_direct_io.patch
+++ /dev/null
@@ -1,80 +0,0 @@
---- a/fs/Kconfig
-+++ b/fs/Kconfig
-@@ -71,6 +71,11 @@ config FILE_LOCKING
-           for filesystems like NFS and for the flock() system
-           call. Disabling this option saves about 11k.
- 
-+config DIRECT_IO
-+      bool "Enable O_DIRECT support" if EXPERT
-+      depends on BLOCK
-+      default y
-+
- source "fs/notify/Kconfig"
- 
- source "fs/quota/Kconfig"
---- a/fs/Makefile
-+++ b/fs/Makefile
-@@ -14,7 +14,8 @@ obj-y :=     open.o read_write.o file_table.
-               stack.o fs_struct.o statfs.o fs_pin.o nsfs.o
- 
- ifeq ($(CONFIG_BLOCK),y)
--obj-y +=      buffer.o block_dev.o direct-io.o mpage.o
-+obj-y +=      buffer.o block_dev.o mpage.o
-+obj-$(CONFIG_DIRECT_IO) += direct-io.o
- else
- obj-y +=      no-block.o
- endif
---- a/include/linux/fs.h
-+++ b/include/linux/fs.h
-@@ -2659,6 +2659,7 @@ enum {
-       DIO_SKIP_DIO_COUNT = 0x08,
- };
- 
-+#ifdef CONFIG_DIRECT_IO
- void dio_end_io(struct bio *bio, int error);
- 
- ssize_t __blockdev_direct_IO(struct kiocb *iocb, struct inode *inode,
-@@ -2666,6 +2667,18 @@ ssize_t __blockdev_direct_IO(struct kioc
-                            loff_t offset, get_block_t get_block,
-                            dio_iodone_t end_io, dio_submit_t submit_io,
-                            int flags);
-+#else
-+static inline void dio_end_io(struct bio *bio, int error)
-+{
-+}
-+static inline ssize_t __blockdev_direct_IO(struct kiocb *iocb, struct inode *inode,
-+      struct block_device *bdev, struct iov_iter *iter, loff_t offset,
-+      get_block_t get_block, dio_iodone_t end_io,
-+      dio_submit_t submit_io, int flags)
-+{
-+      return -EOPNOTSUPP;
-+}
-+#endif
- 
- static inline ssize_t blockdev_direct_IO(struct kiocb *iocb,
-                                        struct inode *inode,
---- a/fs/fcntl.c
-+++ b/fs/fcntl.c
-@@ -52,8 +52,10 @@ static int setfl(int fd, struct file * f
-                  arg |= O_NONBLOCK;
- 
-       if (arg & O_DIRECT) {
-+#ifdef CONFIG_DIRECT_IO
-               if (!filp->f_mapping || !filp->f_mapping->a_ops ||
-                       !filp->f_mapping->a_ops->direct_IO)
-+#endif
-                               return -EINVAL;
-       }
- 
---- a/fs/open.c
-+++ b/fs/open.c
-@@ -671,7 +671,9 @@ int open_check_o_direct(struct file *f)
- {
-       /* NB: we're sure to have correct a_ops only after f_op->open */
-       if (f->f_flags & O_DIRECT) {
-+#ifdef CONFIG_DIRECT_IO
-               if (!f->f_mapping->a_ops || !f->f_mapping->a_ops->direct_IO)
-+#endif
-                       return -EINVAL;
-       }
-       return 0;