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| author | Max Reitz <mreitz@redhat.com> | 2020-05-06 18:44:12 +0300 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2020-09-18 16:17:41 +0300 |
| commit | fcee216beb9c15c3e1466bb76575358415687c55 (patch) | |
| tree | f9116c10fcede619f7a8f80a5b62aa052bc192e4 /fs/fuse/dax.c | |
| parent | 8f622e9497bbbd5df4675edf782500cd9fe961ba (diff) | |
| download | linux-fcee216beb9c15c3e1466bb76575358415687c55.tar.xz | |
fuse: split fuse_mount off of fuse_conn
We want to allow submounts for the same fuse_conn, but with different
superblocks so that each of the submounts has its own device ID. To do
so, we need to split all mount-specific information off of fuse_conn
into a new fuse_mount structure, so that multiple mounts can share a
single fuse_conn.
We need to take care only to perform connection-level actions once (i.e.
when the fuse_conn and thus the first fuse_mount are established, or
when the last fuse_mount and thus the fuse_conn are destroyed). For
example, fuse_sb_destroy() must invoke fuse_send_destroy() until the
last superblock is released.
To do so, we keep track of which fuse_mount is the root mount and
perform all fuse_conn-level actions only when this fuse_mount is
involved.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/fuse/dax.c')
| -rw-r--r-- | fs/fuse/dax.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/fs/fuse/dax.c b/fs/fuse/dax.c index e394dba08cc4..ff99ab2a3c43 100644 --- a/fs/fuse/dax.c +++ b/fs/fuse/dax.c @@ -182,8 +182,8 @@ static int fuse_setup_one_mapping(struct inode *inode, unsigned long start_idx, struct fuse_dax_mapping *dmap, bool writable, bool upgrade) { - struct fuse_conn *fc = get_fuse_conn(inode); - struct fuse_conn_dax *fcd = fc->dax; + struct fuse_mount *fm = get_fuse_mount(inode); + struct fuse_conn_dax *fcd = fm->fc->dax; struct fuse_inode *fi = get_fuse_inode(inode); struct fuse_setupmapping_in inarg; loff_t offset = start_idx << FUSE_DAX_SHIFT; @@ -206,7 +206,7 @@ static int fuse_setup_one_mapping(struct inode *inode, unsigned long start_idx, args.in_numargs = 1; args.in_args[0].size = sizeof(inarg); args.in_args[0].value = &inarg; - err = fuse_simple_request(fc, &args); + err = fuse_simple_request(fm, &args); if (err < 0) return err; dmap->writable = writable; @@ -234,7 +234,7 @@ static int fuse_send_removemapping(struct inode *inode, struct fuse_removemapping_one *remove_one) { struct fuse_inode *fi = get_fuse_inode(inode); - struct fuse_conn *fc = get_fuse_conn(inode); + struct fuse_mount *fm = get_fuse_mount(inode); FUSE_ARGS(args); args.opcode = FUSE_REMOVEMAPPING; @@ -244,7 +244,7 @@ static int fuse_send_removemapping(struct inode *inode, args.in_args[0].value = inargp; args.in_args[1].size = inargp->count * sizeof(*remove_one); args.in_args[1].value = remove_one; - return fuse_simple_request(fc, &args); + return fuse_simple_request(fm, &args); } static int dmap_removemapping_list(struct inode *inode, unsigned int num, |