From 157b892994726ca580a1326f34feabf7f627c94d Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Wed, 12 Apr 2017 09:35:14 +0200 Subject: kernel: remove out of tree direct-io disable hack Direct-IO support has to be enabled for the release build anyway, so this hack is not worth keeping Signed-off-by: Felix Fietkau (backported from commit 0b7ed65cec8084bb98ae0e2758b7aca6c447cd4b) Signed-off-by: Jo-Philipp Wich --- .../patches-4.4/903-debloat_direct_io.patch | 80 ---------------------- 1 file changed, 80 deletions(-) delete mode 100644 target/linux/generic/patches-4.4/903-debloat_direct_io.patch (limited to 'target/linux/generic/patches-4.4/903-debloat_direct_io.patch') diff --git a/target/linux/generic/patches-4.4/903-debloat_direct_io.patch b/target/linux/generic/patches-4.4/903-debloat_direct_io.patch deleted file mode 100644 index 82e6a6b1cf..0000000000 --- a/target/linux/generic/patches-4.4/903-debloat_direct_io.patch +++ /dev/null @@ -1,80 +0,0 @@ ---- a/fs/Kconfig -+++ b/fs/Kconfig -@@ -74,6 +74,11 @@ 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 -@@ -2722,6 +2722,7 @@ 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, -@@ -2729,6 +2730,18 @@ 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 -@@ -673,7 +673,9 @@ 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; -- cgit v1.2.3