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author | Jonas Gorski <jogo@openwrt.org> | 2015-06-22 12:27:59 +0000 |
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committer | Jonas Gorski <jogo@openwrt.org> | 2015-06-22 12:27:59 +0000 |
commit | a0c49ef46f7caf5eb02c635d446218201008ecff (patch) | |
tree | a94180d50839c1587dfe845e8faf16405fab78ff /target/linux/generic/patches-4.1/903-debloat_direct_io.patch | |
parent | 518ab154e059c9f39684f8c78159c9caf333716b (diff) | |
download | mtk-20170518-a0c49ef46f7caf5eb02c635d446218201008ecff.zip mtk-20170518-a0c49ef46f7caf5eb02c635d446218201008ecff.tar.gz mtk-20170518-a0c49ef46f7caf5eb02c635d446218201008ecff.tar.bz2 |
generic: add linux 4.1 support
Boot tested: http://pastebin.com/L6aAb9xj
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
[jogo:
update to 4.1 final
add patches added since submission
delete patches applied in later rcs
restore commit messages in 220-gc-sections and 304-mips_disable_fpu
fix 050-backport_netfilter_rtcache to match new API
update inlined dma ops with upstream changes
add missing config symbols
enabled CONFIG_MULTIUSER
update kmod defintions for 4.1
]
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
SVN-Revision: 46112
Diffstat (limited to 'target/linux/generic/patches-4.1/903-debloat_direct_io.patch')
-rw-r--r-- | target/linux/generic/patches-4.1/903-debloat_direct_io.patch | 80 |
1 files changed, 80 insertions, 0 deletions
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 new file mode 100644 index 0000000..b428a0c --- /dev/null +++ b/target/linux/generic/patches-4.1/903-debloat_direct_io.patch @@ -0,0 +1,80 @@ +--- 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 +@@ -2649,6 +2649,7 @@ 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, +@@ -2656,6 +2657,18 @@ 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; |