Revision 809b1e4945774c9ec5619a8f4e2189b7b3833c0c authored by Hannes Reinecke on 21 January 2021, 17:50:56 UTC, committed by Mike Snitzer on 21 January 2021, 20:06:45 UTC
This reverts commit
644bda6f3460 ("dm table: fall back to getting device using name_to_dev_t()")
dm_get_dev_t() is just used to convert an arbitrary 'path' string
into a dev_t. It doesn't presume that the device is present; that
check will be done later, as the only caller is dm_get_device(),
which does a dm_get_table_device() later on, which will properly
open the device.
So if the path string already _is_ in major:minor representation
we can convert it directly, avoiding a recursion into the filesystem
to lookup the block device.
This avoids a hang in multipath_message() when the filesystem is
inaccessible.
Fixes: 644bda6f3460 ("dm table: fall back to getting device using name_to_dev_t()")
Cc: stable@vger.kernel.org
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin Wilck <mwilck@suse.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
1 parent 004b8ae
uid16.h
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef LINUX_UID16_H
#define LINUX_UID16_H
long __sys_setuid(uid_t uid);
long __sys_setgid(gid_t gid);
long __sys_setreuid(uid_t ruid, uid_t euid);
long __sys_setregid(gid_t rgid, gid_t egid);
long __sys_setresuid(uid_t ruid, uid_t euid, uid_t suid);
long __sys_setresgid(gid_t rgid, gid_t egid, gid_t sgid);
long __sys_setfsuid(uid_t uid);
long __sys_setfsgid(gid_t gid);
#endif /* LINUX_UID16_H */
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