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
braille.h
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _PRINTK_BRAILLE_H
#define _PRINTK_BRAILLE_H
#ifdef CONFIG_A11Y_BRAILLE_CONSOLE
static inline void
braille_set_options(struct console_cmdline *c, char *brl_options)
{
c->brl_options = brl_options;
}
/*
* Setup console according to braille options.
* Return -EINVAL on syntax error, 0 on success (or no braille option was
* actually given).
* Modifies str to point to the serial options
* Sets brl_options to the parsed braille options.
*/
int
_braille_console_setup(char **str, char **brl_options);
int
_braille_register_console(struct console *console, struct console_cmdline *c);
int
_braille_unregister_console(struct console *console);
#else
static inline void
braille_set_options(struct console_cmdline *c, char *brl_options)
{
}
static inline int
_braille_console_setup(char **str, char **brl_options)
{
return 0;
}
static inline int
_braille_register_console(struct console *console, struct console_cmdline *c)
{
return 0;
}
static inline int
_braille_unregister_console(struct console *console)
{
return 0;
}
#endif
#endif
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