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UPSTREAM: fuse: check s_root when destroying sb

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commit d534d31d6a45d71de61db22090b4820afb68fddc upstream.

Checking "fm" works because currently sb->s_fs_info is cleared on error
paths; however, sb->s_root is what generic_shutdown_super() checks to
determine whether the sb was fully initialized or not.

This change will allow cleanup of sb setup error paths.

Change-Id: Icc78860e8a64e279fb2717b1cc08d1b83160d733
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Yang Bo <yb203166@antfin.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Miklos Szeredi 2021-10-21 10:01:38 +02:00 • committed by Alexander Martinz
commit 9085f3d5d5
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2 changed files with 2 additions and 2 deletions
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2
fs/fuse/inode.c
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@ -1768,7 +1768,7 @@ static void fuse_kill_sb_blk(struct super_block *sb)
struct fuse_mount *fm = get_fuse_mount_super(sb);
bool last;
if (fm) {
if (sb->s_root) {
last = fuse_mount_remove(fm);
if (last)
fuse_conn_destroy(fm);

2
fs/fuse/virtio_fs.c
View file

@ -1413,7 +1413,7 @@ static void virtio_kill_sb(struct super_block *sb)
bool last;
/* If mount failed, we can still be called without any fc */
if (fm) {
if (sb->s_root) {
last = fuse_mount_remove(fm);
if (last)
virtio_fs_conn_destroy(fm);