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| author | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-03-11 13:34:47 +0300 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-04-02 21:16:07 +0300 |
| commit | 806cbae1228cc1a19b978c4513f6851e9ab7f388 (patch) | |
| tree | fd47009c2d34d4bcd1fe713a01201f46533f7c4a /include/linux/syscalls.h | |
| parent | e2aaa9f423367ee03755d632555c242629a08d00 (diff) | |
| download | linux-806cbae1228cc1a19b978c4513f6851e9ab7f388.tar.xz | |
fs: add ksys_sync_file_range helper(); remove in-kernel calls to syscall
Using this helper allows us to avoid the in-kernel calls to the
sys_sync_file_range() 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_sync_file_range().
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 'include/linux/syscalls.h')
| -rw-r--r-- | include/linux/syscalls.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 4dd685ee425d..331da76f66e2 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -963,6 +963,8 @@ ssize_t ksys_read(unsigned int fd, char __user *buf, size_t count); void ksys_sync(void); int ksys_unshare(unsigned long unshare_flags); int ksys_setsid(void); +int ksys_sync_file_range(int fd, loff_t offset, loff_t nbytes, + unsigned int flags); /* * The following kernel syscall equivalents are just wrappers to fs-internal |