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authorMiklos Szeredi <mszeredi@redhat.com>2019-08-29 11:01:20 +0200
committerMiklos Szeredi <mszeredi@redhat.com>2019-09-12 14:59:41 +0200
commit783863d6476ce9f27fa87227f76ae9134caf43fa (patch)
tree98acd92b40d5a92fa7afbd704ed39d42f639c932
parent8fab010644363f8f80194322aa7a81e38c867af3 (diff)
fuse: dissociate DESTROY from fuseblk
Allow virtio-fs to also send DESTROY request. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
-rw-r--r--fs/fuse/fuse_i.h9
-rw-r--r--fs/fuse/inode.c12
2 files changed, 17 insertions, 4 deletions
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index fed68a427a4c..48d214df9172 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -467,6 +467,7 @@ struct fuse_fs_context {
bool group_id_present:1;
bool default_permissions:1;
bool allow_other:1;
+ bool destroy:1;
unsigned int max_read;
unsigned int blksize;
const char *subtype;
@@ -946,6 +947,13 @@ void fuse_send_init(struct fuse_conn *fc);
int fuse_fill_super_common(struct super_block *sb, struct fuse_fs_context *ctx);
/**
+ * Disassociate fuse connection from superblock and kill the superblock
+ *
+ * Calls kill_anon_super(), do not use with bdev mounts.
+ */
+void fuse_kill_sb_anon(struct super_block *sb);
+
+/**
* Add connection to control filesystem
*/
int fuse_ctl_add_conn(struct fuse_conn *fc);
@@ -1057,5 +1065,6 @@ unsigned int fuse_len_args(unsigned int numargs, struct fuse_arg *args);
* Get the next unique ID for a request
*/
u64 fuse_get_unique(struct fuse_iqueue *fiq);
+void fuse_free_conn(struct fuse_conn *fc);
#endif /* _FS_FUSE_I_H */
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index 6a0f31faaeaa..cd6ffb3fe69e 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -999,11 +999,12 @@ void fuse_send_init(struct fuse_conn *fc)
}
EXPORT_SYMBOL_GPL(fuse_send_init);
-static void fuse_free_conn(struct fuse_conn *fc)
+void fuse_free_conn(struct fuse_conn *fc)
{
WARN_ON(!list_empty(&fc->devices));
kfree_rcu(fc, rcu);
}
+EXPORT_SYMBOL_GPL(fuse_free_conn);
static int fuse_bdi_init(struct fuse_conn *fc, struct super_block *sb)
{
@@ -1169,7 +1170,7 @@ int fuse_fill_super_common(struct super_block *sb, struct fuse_fs_context *ctx)
fc->user_id = ctx->user_id;
fc->group_id = ctx->group_id;
fc->max_read = max_t(unsigned, 4096, ctx->max_read);
- fc->destroy = ctx->is_bdev;
+ fc->destroy = ctx->destroy;
err = -ENOMEM;
root = fuse_get_root_inode(sb, ctx->rootmode);
@@ -1293,8 +1294,10 @@ static int fuse_init_fs_context(struct fs_context *fc)
ctx->blksize = FUSE_DEFAULT_BLKSIZE;
#ifdef CONFIG_BLOCK
- if (fc->fs_type == &fuseblk_fs_type)
+ if (fc->fs_type == &fuseblk_fs_type) {
ctx->is_bdev = true;
+ ctx->destroy = true;
+ }
#endif
fc->fs_private = ctx;
@@ -1319,11 +1322,12 @@ static void fuse_sb_destroy(struct super_block *sb)
}
}
-static void fuse_kill_sb_anon(struct super_block *sb)
+void fuse_kill_sb_anon(struct super_block *sb)
{
fuse_sb_destroy(sb);
kill_anon_super(sb);
}
+EXPORT_SYMBOL_GPL(fuse_kill_sb_anon);
static struct file_system_type fuse_fs_type = {
.owner = THIS_MODULE,