diff options
| author | Jeffle Xu <jefflexu@linux.alibaba.com> | 2021-11-25 15:05:28 +0800 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2021-12-14 11:09:37 +0100 |
| commit | 2ee019fadcca343c3deea6a1767965bdf23fc3d0 (patch) | |
| tree | f167c77e4cef2465e4fcff4e2931abebfddabee4 /fs/fuse/inode.c | |
| parent | 93a497b9ad695bb2f38a302c5b29dbc9b555ff3f (diff) | |
fuse: negotiate per inode DAX in FUSE_INIT
Among the FUSE_INIT phase, client shall advertise per inode DAX if it's
mounted with "dax=inode". Then server is aware that client is in per
inode DAX mode, and will construct per-inode DAX attribute accordingly.
Server shall also advertise support for per inode DAX. If server doesn't
support it while client is mounted with "dax=inode", client will
silently fallback to "dax=never" since "dax=inode" is advisory only.
Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com>
Reviewed-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/fuse/inode.c')
| -rw-r--r-- | fs/fuse/inode.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index dc6714350f21..c256fd82af3c 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -1171,10 +1171,13 @@ static void process_init_reply(struct fuse_mount *fm, struct fuse_args *args, min_t(unsigned int, fc->max_pages_limit, max_t(unsigned int, arg->max_pages, 1)); } - if (IS_ENABLED(CONFIG_FUSE_DAX) && - flags & FUSE_MAP_ALIGNMENT && - !fuse_dax_check_alignment(fc, arg->map_alignment)) { - ok = false; + if (IS_ENABLED(CONFIG_FUSE_DAX)) { + if (flags & FUSE_MAP_ALIGNMENT && + !fuse_dax_check_alignment(fc, arg->map_alignment)) { + ok = false; + } + if (flags & FUSE_HAS_INODE_DAX) + fc->inode_dax = 1; } if (flags & FUSE_HANDLE_KILLPRIV_V2) { fc->handle_killpriv_v2 = 1; @@ -1233,6 +1236,8 @@ void fuse_send_init(struct fuse_mount *fm) #ifdef CONFIG_FUSE_DAX if (fm->fc->dax) flags |= FUSE_MAP_ALIGNMENT; + if (fuse_is_inode_dax_mode(fm->fc->dax_mode)) + flags |= FUSE_HAS_INODE_DAX; #endif if (fm->fc->auto_submounts) flags |= FUSE_SUBMOUNTS; |