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| author | Martin Brandenburg <martin@omnibond.com> | 2017-04-25 15:38:05 -0400 |
|---|---|---|
| committer | Mike Marshall <hubcap@omnibond.com> | 2017-04-26 14:33:00 -0400 |
| commit | 9d286b0d8207a70d7e0ffbd5be864ff7a62de05a (patch) | |
| tree | 9b57c3faa769863e492560685ea7d9e180fca01c /fs/orangefs/super.c | |
| parent | 53950ef541675df48c219a8d665111a0e68dfc2f (diff) | |
| download | linux-9d286b0d8207a70d7e0ffbd5be864ff7a62de05a.tar.gz linux-9d286b0d8207a70d7e0ffbd5be864ff7a62de05a.tar.bz2 linux-9d286b0d8207a70d7e0ffbd5be864ff7a62de05a.zip | |
orangefs: ensure the userspace component is unmounted if mount fails
If the mount is aborted after userspace has been asked to mount,
userspace must be told to unmount.
Ordinarily orangefs_kill_sb does the unmount. However it cannot be
called if the superblock has not been set up. This is a very narrow
window.
The NULL fs_id is not unmounted.
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
Diffstat (limited to 'fs/orangefs/super.c')
| -rw-r--r-- | fs/orangefs/super.c | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/fs/orangefs/super.c b/fs/orangefs/super.c index 629d8c917fa6..5c7c273e17ec 100644 --- a/fs/orangefs/super.c +++ b/fs/orangefs/super.c @@ -376,6 +376,25 @@ static const struct export_operations orangefs_export_ops = { .fh_to_dentry = orangefs_fh_to_dentry, }; +static int orangefs_unmount(int id, __s32 fs_id, const char *devname) +{ + struct orangefs_kernel_op_s *op; + int r; + op = op_alloc(ORANGEFS_VFS_OP_FS_UMOUNT); + if (!op) + return -ENOMEM; + op->upcall.req.fs_umount.id = id; + op->upcall.req.fs_umount.fs_id = fs_id; + strncpy(op->upcall.req.fs_umount.orangefs_config_server, + devname, ORANGEFS_MAX_SERVER_ADDR_LEN); + r = service_operation(op, "orangefs_fs_umount", 0); + /* Not much to do about an error here. */ + if (r) + gossip_err("orangefs_unmount: service_operation %d\n", r); + op_release(op); + return r; +} + static int orangefs_fill_sb(struct super_block *sb, struct orangefs_fs_mount_response *fs_mount, void *data, int silent) @@ -484,6 +503,8 @@ struct dentry *orangefs_mount(struct file_system_type *fst, if (IS_ERR(sb)) { d = ERR_CAST(sb); + orangefs_unmount(new_op->downcall.resp.fs_mount.id, + new_op->downcall.resp.fs_mount.fs_id, devname); goto free_op; } @@ -539,6 +560,7 @@ struct dentry *orangefs_mount(struct file_system_type *fst, free_sb_and_op: /* Will call orangefs_kill_sb with sb not in list. */ ORANGEFS_SB(sb)->no_list = 1; + /* ORANGEFS_VFS_OP_FS_UMOUNT is done by orangefs_kill_sb. */ deactivate_locked_super(sb); free_op: gossip_err("orangefs_mount: mount request failed with %d\n", ret); @@ -554,6 +576,7 @@ free_op: void orangefs_kill_sb(struct super_block *sb) { + int r; gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_kill_sb: called\n"); /* provided sb cleanup */ @@ -563,7 +586,10 @@ void orangefs_kill_sb(struct super_block *sb) * issue the unmount to userspace to tell it to remove the * dynamic mount info it has for this superblock */ - orangefs_unmount_sb(sb); + r = orangefs_unmount(ORANGEFS_SB(sb)->id, ORANGEFS_SB(sb)->fs_id, + ORANGEFS_SB(sb)->devname); + if (!r) + ORANGEFS_SB(sb)->mount_pending = 1; if (!ORANGEFS_SB(sb)->no_list) { /* remove the sb from our list of orangefs specific sb's */ |