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fuse: document fuse_fsync_in.fsync_flags

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The FUSE_FSYNC_DATASYNC flag was introduced by commit b6aeadeda2
("[PATCH] FUSE - file operations") as a magic number.  No new values have
been added to fsync_flags since.

Signed-off-by: Alan Somers <asomers@FreeBSD.org>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
This commit is contained in:
Alan Somers 2019-04-19 15:42:44 -06:00 committed by Miklos Szeredi
parent bbd84f3365
commit 154603fe3e
2 changed files with 8 additions and 1 deletions
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2
fs/fuse/file.c
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@ -464,7 +464,7 @@ int fuse_fsync_common(struct file *file, loff_t start, loff_t end,
memset(&inarg, 0, sizeof(inarg));
inarg.fh = ff->fh;
inarg.fsync_flags = datasync ? 1 : 0;
inarg.fsync_flags = datasync ? FUSE_FSYNC_FDATASYNC : 0;
args.in.h.opcode = opcode;
args.in.h.nodeid = get_node_id(inode);
args.in.numargs = 1;

7
include/uapi/linux/fuse.h
View file

@ -360,6 +360,13 @@ struct fuse_file_lock {
*/
#define FUSE_POLL_SCHEDULE_NOTIFY (1 << 0)
/**
* Fsync flags
*
* FUSE_FSYNC_FDATASYNC: Sync data only, not metadata
*/
#define FUSE_FSYNC_FDATASYNC (1 << 0)
enum fuse_opcode {
FUSE_LOOKUP = 1,
FUSE_FORGET = 2, /* no reply */