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authorDominik Brodowski <linux@dominikbrodowski.net>2018-03-11 11:34:55 +0100
committerDominik Brodowski <linux@dominikbrodowski.net>2018-04-02 20:16:00 +0200
commit2ca2a09d6215fd9621aa3e2db7cc9428a61f2911 (patch)
treea1999670bbdba36d98ba32fcca130dafcb238fd0 /init/do_mounts.c
parent411d9475cf901b5a6d2996b46cb5726184a4fa50 (diff)
downloadlinux-2ca2a09d6215fd9621aa3e2db7cc9428a61f2911.tar.bz2
fs: add ksys_close() wrapper; remove in-kernel calls to sys_close()
Using the ksys_close() wrapper allows us to get rid of in-kernel calls to the sys_close() 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_close(), with one subtle difference: The few places which checked the return value did not care about the return value re-writing in sys_close(), so simply use a wrapper around __close_fd(). 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: Al Viro <viro@zeniv.linux.org.uk> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'init/do_mounts.c')
-rw-r--r--init/do_mounts.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/init/do_mounts.c b/init/do_mounts.c
index 89f18985fa90..a28dd42d1f84 100644
--- a/init/do_mounts.c
+++ b/init/do_mounts.c
@@ -492,7 +492,7 @@ void __init change_floppy(char *fmt, ...)
fd = sys_open("/dev/root", O_RDWR | O_NDELAY, 0);
if (fd >= 0) {
sys_ioctl(fd, FDEJECT, 0);
- sys_close(fd);
+ ksys_close(fd);
}
printk(KERN_NOTICE "VFS: Insert %s and press ENTER\n", buf);
fd = sys_open("/dev/console", O_RDWR, 0);
@@ -503,7 +503,7 @@ void __init change_floppy(char *fmt, ...)
sys_read(fd, &c, 1);
termios.c_lflag |= ICANON;
sys_ioctl(fd, TCSETSF, (long)&termios);
- sys_close(fd);
+ ksys_close(fd);
}
}
#endif