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| author | Miklos Szeredi <mszeredi@redhat.com> | 2021-10-21 10:01:38 +0200 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2021-10-21 10:01:38 +0200 |
| commit | a27c061a49afd7ad2d935e6ac734e2a9f62861b8 (patch) | |
| tree | 08ed4d5171ed95f7331fb10473a1e47b507dcbd0 /fs/fuse | |
| parent | d534d31d6a45d71de61db22090b4820afb68fddc (diff) | |
| download | linux-a27c061a49afd7ad2d935e6ac734e2a9f62861b8.tar.gz linux-a27c061a49afd7ad2d935e6ac734e2a9f62861b8.tar.bz2 linux-a27c061a49afd7ad2d935e6ac734e2a9f62861b8.zip | |
fuse: get rid of fuse_put_super()
The ->put_super callback is called from generic_shutdown_super() in case of
a fully initialized sb. This is called from kill_***_super(), which is
called from ->kill_sb instances.
Fuse uses ->put_super to destroy the fs specific fuse_mount and drop the
reference to the fuse_conn, while it does the same on each error case
during sb setup.
This patch moves the destruction from fuse_put_super() to
fuse_mount_destroy(), called at the end of all ->kill_sb instances. A
follup patch will clean up the error paths.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/fuse')
| -rw-r--r-- | fs/fuse/fuse_i.h | 3 | ||||
| -rw-r--r-- | fs/fuse/inode.c | 20 | ||||
| -rw-r--r-- | fs/fuse/virtio_fs.c | 1 |
3 files changed, 15 insertions, 9 deletions
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h index 319596df5dc6..f55f9f94b1a4 100644 --- a/fs/fuse/fuse_i.h +++ b/fs/fuse/fuse_i.h @@ -1121,6 +1121,9 @@ int fuse_init_fs_context_submount(struct fs_context *fsc); */ void fuse_conn_destroy(struct fuse_mount *fm); +/* Drop the connection and free the fuse mount */ +void fuse_mount_destroy(struct fuse_mount *fm); + /** * Add connection to control filesystem */ diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index 60ceaf332840..30ca1f71d777 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -457,14 +457,6 @@ static void fuse_send_destroy(struct fuse_mount *fm) } } -static void fuse_put_super(struct super_block *sb) -{ - struct fuse_mount *fm = get_fuse_mount_super(sb); - - fuse_conn_put(fm->fc); - kfree(fm); -} - static void convert_fuse_statfs(struct kstatfs *stbuf, struct fuse_kstatfs *attr) { stbuf->f_type = FUSE_SUPER_MAGIC; @@ -1003,7 +995,6 @@ static const struct super_operations fuse_super_operations = { .evict_inode = fuse_evict_inode, .write_inode = fuse_write_inode, .drop_inode = generic_delete_inode, - .put_super = fuse_put_super, .umount_begin = fuse_umount_begin, .statfs = fuse_statfs, .sync_fs = fuse_sync_fs, @@ -1754,10 +1745,20 @@ static void fuse_sb_destroy(struct super_block *sb) } } +void fuse_mount_destroy(struct fuse_mount *fm) +{ + if (fm) { + fuse_conn_put(fm->fc); + kfree(fm); + } +} +EXPORT_SYMBOL(fuse_mount_destroy); + static void fuse_kill_sb_anon(struct super_block *sb) { fuse_sb_destroy(sb); kill_anon_super(sb); + fuse_mount_destroy(get_fuse_mount_super(sb)); } static struct file_system_type fuse_fs_type = { @@ -1775,6 +1776,7 @@ static void fuse_kill_sb_blk(struct super_block *sb) { fuse_sb_destroy(sb); kill_block_super(sb); + fuse_mount_destroy(get_fuse_mount_super(sb)); } static struct file_system_type fuseblk_fs_type = { diff --git a/fs/fuse/virtio_fs.c b/fs/fuse/virtio_fs.c index 32fd138c621e..fa80d250c802 100644 --- a/fs/fuse/virtio_fs.c +++ b/fs/fuse/virtio_fs.c @@ -1400,6 +1400,7 @@ static void virtio_kill_sb(struct super_block *sb) virtio_fs_conn_destroy(fm); } kill_anon_super(sb); + fuse_mount_destroy(fm); } static int virtio_fs_test_super(struct super_block *sb, |