diff options
author | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-03-11 11:34:40 +0100 |
---|---|---|
committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-04-02 20:15:49 +0200 |
commit | c7248321a3d42ffba78db0dde88d1c49ca1c045f (patch) | |
tree | ecd2b86a077f764e200b3c214cd1f851d4e3c6e0 /fs/open.c | |
parent | 3a18ef5c1b3935cb05888fc37964321f7bd6231d (diff) | |
download | linux-c7248321a3d42ffba78db0dde88d1c49ca1c045f.tar.bz2 |
fs: add ksys_dup{,3}() helper; remove in-kernel calls to sys_dup{,3}()
Using ksys_dup() and ksys_dup3() as helper functions allows us to
avoid the in-kernel calls to the sys_dup() and sys_dup3() syscalls.
The ksys_ prefix denotes that these functions are meant as a drop-in
replacement for the syscalls. In particular, they use the same
calling convention as sys_dup{,3}().
In the near future, the fs-external callers of ksys_dup{,3}() should be
converted to call do_dup2() directly. Then, ksys_dup{,3}() can be moved
within sys_dup{,3}() again.
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 'fs/open.c')
0 files changed, 0 insertions, 0 deletions