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authorSteve French <stfrench@microsoft.com>2019-07-16 18:55:38 -0500
committerSteve French <stfrench@microsoft.com>2019-11-25 01:14:14 -0600
commitd0677992d2af3d65f1c1c21de3323d09d4891537 (patch)
tree77c2daf3008dd03a3b0f8af179119cb26dc1f5ec /fs/cifs/cifsfs.h
parentcifs: remove unused variable 'sid_user' (diff)
downloadlinux-dev-d0677992d2af3d65f1c1c21de3323d09d4891537.tar.xz
linux-dev-d0677992d2af3d65f1c1c21de3323d09d4891537.zip
cifs: add support for flock
The flock system call locks the whole file rather than a byte range and so is currently emulated by various other file systems by simply sending a byte range lock for the whole file. Add flock handling for cifs.ko in similar way. xfstest generic/504 passes with this as well Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Diffstat (limited to 'fs/cifs/cifsfs.h')
-rw-r--r--fs/cifs/cifsfs.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index bc4ca94137f2..93c757265105 100644
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -108,6 +108,7 @@ extern ssize_t cifs_strict_readv(struct kiocb *iocb, struct iov_iter *to);
extern ssize_t cifs_user_writev(struct kiocb *iocb, struct iov_iter *from);
extern ssize_t cifs_direct_writev(struct kiocb *iocb, struct iov_iter *from);
extern ssize_t cifs_strict_writev(struct kiocb *iocb, struct iov_iter *from);
+extern int cifs_flock(struct file *pfile, int cmd, struct file_lock *plock);
extern int cifs_lock(struct file *, int, struct file_lock *);
extern int cifs_fsync(struct file *, loff_t, loff_t, int);
extern int cifs_strict_fsync(struct file *, loff_t, loff_t, int);