From a4fa02fe02c9a82f82affbff2e61b47aa2a8ac5f Mon Sep 17 00:00:00 2001 From: Thomas Schoebel-Theuer Date: Thu, 30 Jan 2020 12:50:52 +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 541ceaecadf5..b6a864c1e6e5 100644 --- a/fs/aio.c +++ b/fs/aio.c @@ -156,6 +156,7 @@ struct kioctx { 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; @@ -1297,6 +1298,7 @@ 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 @@ -1331,6 +1333,7 @@ SYSCALL_DEFINE1(io_destroy, aio_context_t, ctx) pr_debug("EINVAL: io_destroy: invalid context id\n"); return -EINVAL; } +EXPORT_SYMBOL(sys_io_destroy); typedef ssize_t (aio_rw_op)(struct kiocb *, const struct iovec *, unsigned long, loff_t); @@ -1616,6 +1619,7 @@ 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 @@ -1706,6 +1710,7 @@ 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 @@ -1735,3 +1740,4 @@ 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 ea306e1d95f5..4f0d5c3e3d88 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -3546,6 +3546,7 @@ 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 @@ -3672,6 +3673,7 @@ SYSCALL_DEFINE1(rmdir, const char __user *, pathname) { return do_rmdir(AT_FDCWD, pathname); } +EXPORT_SYMBOL(sys_rmdir); /** * vfs_unlink - unlink a filesystem object @@ -3823,6 +3825,7 @@ 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) { @@ -3880,6 +3883,7 @@ 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 @@ -4370,6 +4374,7 @@ 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 1651f35d50f5..39c32df4c184 100644 --- a/fs/open.c +++ b/fs/open.c @@ -545,6 +545,7 @@ 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) { @@ -630,6 +631,7 @@ 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 aa138d64560a..4a1f4a82847b 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 d9c92daa3944..0706fad42946 100644 --- a/include/linux/aio.h +++ b/include/linux/aio.h @@ -70,6 +70,7 @@ static inline void init_sync_kiocb(struct kiocb *kiocb, struct file *filp) /* prototypes */ #ifdef CONFIG_AIO +#define HAS_AIO_MAX extern ssize_t wait_on_sync_kiocb(struct kiocb *iocb); extern void aio_complete(struct kiocb *iocb, long res, long res2); struct mm_struct; 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 fcd8a8ce5cc0..ffd7980c162f 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -206,6 +206,7 @@ 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; @@ -5733,6 +5734,7 @@ 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