diff options
| author | Vivek Goyal <vgoyal@redhat.com> | 2020-08-19 18:19:47 -0400 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2020-09-10 11:39:22 +0200 |
| commit | 1dd539577c42b67da796e2e758e04171bb889779 (patch) | |
| tree | ec3e67b9b630f9803c9f01d8ebaabb9a9db3ea1d /fs/fuse/inode.c | |
| parent | 22f3787e9d95e72d1f09795f294fb010e2998f43 (diff) | |
virtiofs: add a mount option to enable dax
Add a mount option to allow using dax with virtio_fs.
Signed-off-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 | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index bdae765b2d42..1780dfe063ab 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -587,6 +587,11 @@ static int fuse_show_options(struct seq_file *m, struct dentry *root) if (sb->s_bdev && sb->s_blocksize != FUSE_DEFAULT_BLKSIZE) seq_printf(m, ",blksize=%lu", sb->s_blocksize); } +#ifdef CONFIG_FUSE_DAX + if (fc->dax) + seq_puts(m, ",dax"); +#endif + return 0; } @@ -651,6 +656,8 @@ void fuse_conn_put(struct fuse_conn *fc) if (refcount_dec_and_test(&fc->count)) { struct fuse_iqueue *fiq = &fc->iq; + if (IS_ENABLED(CONFIG_FUSE_DAX)) + fuse_dax_conn_free(fc); if (fiq->ops->release) fiq->ops->release(fiq); put_pid_ns(fc->pid_ns); @@ -1175,11 +1182,17 @@ int fuse_fill_super_common(struct super_block *sb, struct fuse_fs_context *ctx) if (sb->s_user_ns != &init_user_ns) sb->s_xattr = fuse_no_acl_xattr_handlers; + if (IS_ENABLED(CONFIG_FUSE_DAX)) { + err = fuse_dax_conn_alloc(fc, ctx->dax_dev); + if (err) + goto err; + } + if (ctx->fudptr) { err = -ENOMEM; fud = fuse_dev_alloc_install(fc); if (!fud) - goto err; + goto err_free_dax; } fc->dev = sb->s_dev; @@ -1234,6 +1247,9 @@ int fuse_fill_super_common(struct super_block *sb, struct fuse_fs_context *ctx) err_dev_free: if (fud) fuse_dev_free(fud); + err_free_dax: + if (IS_ENABLED(CONFIG_FUSE_DAX)) + fuse_dax_conn_free(fc); err: return err; } |