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| author | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-03-11 11:34:39 +0100 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-04-02 20:15:48 +0200 |
| commit | 312db1aa1dc7bff133d95c92efcc5e42b57cefa6 (patch) | |
| tree | e62c8c554db9e30e7676d847fa75d189231895de /drivers/base/devtmpfs.c | |
| parent | fs/quota: use COMPAT_SYSCALL_DEFINE for sys32_quotactl() (diff) | |
| download | linux-312db1aa1dc7bff133d95c92efcc5e42b57cefa6.tar.xz linux-312db1aa1dc7bff133d95c92efcc5e42b57cefa6.zip | |
fs: add ksys_mount() helper; remove in-kernel calls to sys_mount()
Using this helper allows us to avoid the in-kernel calls to the sys_mount()
syscall. The ksys_ prefix denotes that this function is meant as a drop-in
replacement for the syscall. In particular, it uses the same calling
convention as sys_mount().
In the near future, all callers of ksys_mount() should be converted to call
do_mount() directly.
This patch is part of a series which removes in-kernel calls to syscalls.
On this basis, the syscall entry path can be streamlined. For details, see
http://lkml.kernel.org/r/20180325162527.GA17492@light.dominikbrodowski.net
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'drivers/base/devtmpfs.c')
| -rw-r--r-- | drivers/base/devtmpfs.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/base/devtmpfs.c b/drivers/base/devtmpfs.c index 50025d7959cb..4afb04686c8e 100644 --- a/drivers/base/devtmpfs.c +++ b/drivers/base/devtmpfs.c @@ -356,7 +356,8 @@ int devtmpfs_mount(const char *mntdir) if (!thread) return 0; - err = sys_mount("devtmpfs", (char *)mntdir, "devtmpfs", MS_SILENT, NULL); + err = ksys_mount("devtmpfs", (char *)mntdir, "devtmpfs", MS_SILENT, + NULL); if (err) printk(KERN_INFO "devtmpfs: error mounting %i\n", err); else @@ -382,7 +383,7 @@ static int devtmpfsd(void *p) *err = sys_unshare(CLONE_NEWNS); if (*err) goto out; - *err = sys_mount("devtmpfs", "/", "devtmpfs", MS_SILENT, options); + *err = ksys_mount("devtmpfs", "/", "devtmpfs", MS_SILENT, options); if (*err) goto out; sys_chdir("/.."); /* will traverse into overmounted root */ |