From 6d1e9c13bc77556d5fd231e53050bb6cb8094b52 Mon Sep 17 00:00:00 2001 From: Thomas Schoebel-Theuer Date: Thu, 30 Jan 2020 13:00:24 +0100 Subject: [PATCH] mars: minimum pre-patch for mars Mostly introduces some EXPORT_SYMBOL(). Should have almost no impact onto the kernel. --- fs/aio.c | 6 ++++++ fs/namei.c | 5 +++++ fs/open.c | 2 ++ fs/utimes.c | 2 ++ include/linux/aio.h | 1 + include/uapi/linux/major.h | 1 + mm/page_alloc.c | 2 ++ 7 files changed, 19 insertions(+) diff --git a/fs/aio.c b/fs/aio.c index 61ada5047da2..ef8aeffa486d 100644 --- a/fs/aio.c +++ b/fs/aio.c @@ -193,6 +193,7 @@ struct aio_kiocb { static DEFINE_SPINLOCK(aio_nr_lock); unsigned long aio_nr; /* current system wide number of aio requests */ unsigned long aio_max_nr = 0x10000; /* system wide maximum number of aio requests */ +EXPORT_SYMBOL_GPL(aio_max_nr); /*----end sysctl variables---*/ static struct kmem_cache *kiocb_cachep; @@ -1349,6 +1350,7 @@ SYSCALL_DEFINE2(io_setup, unsigned, nr_events, aio_context_t __user *, ctxp) out: return ret; } +EXPORT_SYMBOL(sys_io_setup); /* sys_io_destroy: * Destroy the aio_context specified. May cancel any outstanding @@ -1385,6 +1387,7 @@ SYSCALL_DEFINE1(io_destroy, aio_context_t, ctx) pr_debug("EINVAL: invalid context id\n"); return -EINVAL; } +EXPORT_SYMBOL(sys_io_destroy); typedef ssize_t (rw_iter_op)(struct kiocb *, struct iov_iter *); @@ -1628,6 +1631,7 @@ long do_io_submit(aio_context_t ctx_id, long nr, percpu_ref_put(&ctx->users); return i ? i : ret; } +EXPORT_SYMBOL(sys_io_submit); /* sys_io_submit: * Queue the nr iocbs pointed to by iocbpp for processing. Returns @@ -1717,6 +1721,7 @@ SYSCALL_DEFINE3(io_cancel, aio_context_t, ctx_id, struct iocb __user *, iocb, return ret; } +EXPORT_SYMBOL(sys_io_cancel); /* io_getevents: * Attempts to read at least min_nr events and up to nr events from @@ -1746,3 +1751,4 @@ SYSCALL_DEFINE5(io_getevents, aio_context_t, ctx_id, } return ret; } +EXPORT_SYMBOL(sys_io_getevents); diff --git a/fs/namei.c b/fs/namei.c index 4d333d26a028..164278de20f9 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -3601,6 +3601,7 @@ SYSCALL_DEFINE2(mkdir, const char __user *, pathname, umode_t, mode) { return sys_mkdirat(AT_FDCWD, pathname, mode); } +EXPORT_SYMBOL(sys_mkdir); /* * The dentry_unhash() helper will try to drop the dentry early: we @@ -3727,6 +3728,7 @@ SYSCALL_DEFINE1(rmdir, const char __user *, pathname) { return do_rmdir(AT_FDCWD, pathname); } +EXPORT_SYMBOL(sys_rmdir); /** * vfs_unlink - unlink a filesystem object @@ -3878,6 +3880,7 @@ SYSCALL_DEFINE1(unlink, const char __user *, pathname) { return do_unlinkat(AT_FDCWD, pathname); } +EXPORT_SYMBOL(sys_unlink); int vfs_symlink(struct inode *dir, struct dentry *dentry, const char *oldname) { @@ -3935,6 +3938,7 @@ SYSCALL_DEFINE2(symlink, const char __user *, oldname, const char __user *, newn { return sys_symlinkat(oldname, AT_FDCWD, newname); } +EXPORT_SYMBOL(sys_symlink); /** * vfs_link - create a new link @@ -4425,6 +4429,7 @@ SYSCALL_DEFINE2(rename, const char __user *, oldname, const char __user *, newna { return sys_renameat2(AT_FDCWD, oldname, AT_FDCWD, newname, 0); } +EXPORT_SYMBOL(sys_rename); int vfs_whiteout(struct inode *dir, struct dentry *dentry) { diff --git a/fs/open.c b/fs/open.c index d0169e52d7fe..7934d2c6ea54 100644 --- a/fs/open.c +++ b/fs/open.c @@ -561,6 +561,7 @@ SYSCALL_DEFINE2(chmod, const char __user *, filename, umode_t, mode) { return sys_fchmodat(AT_FDCWD, filename, mode); } +EXPORT_SYMBOL(sys_chmod); static int chown_common(struct path *path, uid_t user, gid_t group) { @@ -646,6 +647,7 @@ SYSCALL_DEFINE3(lchown, const char __user *, filename, uid_t, user, gid_t, group return sys_fchownat(AT_FDCWD, filename, user, group, AT_SYMLINK_NOFOLLOW); } +EXPORT_SYMBOL(sys_lchown); SYSCALL_DEFINE3(fchown, unsigned int, fd, uid_t, user, gid_t, group) { diff --git a/fs/utimes.c b/fs/utimes.c index 61abc3051377..ccaf6d557383 100644 --- a/fs/utimes.c +++ b/fs/utimes.c @@ -1,3 +1,4 @@ +#include #include #include #include @@ -181,6 +182,7 @@ retry: out: return error; } +EXPORT_SYMBOL(do_utimes); SYSCALL_DEFINE4(utimensat, int, dfd, const char __user *, filename, struct timespec __user *, utimes, int, flags) diff --git a/include/linux/aio.h b/include/linux/aio.h index 9eb42dbc5582..1dccb3fbec69 100644 --- a/include/linux/aio.h +++ b/include/linux/aio.h @@ -13,6 +13,7 @@ typedef int (kiocb_cancel_fn)(struct kiocb *); /* prototypes */ #ifdef CONFIG_AIO +#define HAS_AIO_MAX extern void exit_aio(struct mm_struct *mm); extern long do_io_submit(aio_context_t ctx_id, long nr, struct iocb __user *__user *iocbpp, bool compat); diff --git a/include/uapi/linux/major.h b/include/uapi/linux/major.h index 620252e69b44..61a665cdb420 100644 --- a/include/uapi/linux/major.h +++ b/include/uapi/linux/major.h @@ -148,6 +148,7 @@ #define UNIX98_PTY_SLAVE_MAJOR (UNIX98_PTY_MASTER_MAJOR+UNIX98_PTY_MAJOR_COUNT) #define DRBD_MAJOR 147 +#define MARS_MAJOR 148 #define RTF_MAJOR 150 #define RAW_MAJOR 162 diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 35bda77211ea..2ef0e76f3c8c 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -208,6 +208,7 @@ static char * const zone_names[MAX_NR_ZONES] = { }; int min_free_kbytes = 1024; +EXPORT_SYMBOL(min_free_kbytes); int user_min_free_kbytes = -1; static unsigned long __meminitdata nr_kernel_pages; @@ -5820,6 +5821,7 @@ static void __setup_per_zone_wmarks(void) /* update totalreserve_pages */ calculate_totalreserve_pages(); } +EXPORT_SYMBOL(setup_per_zone_wmarks); /** * setup_per_zone_wmarks - called when min_free_kbytes changes -- 2.25.0