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drbd: remove macros using require_context

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This require_context attribute originated in a proposed sparse patch by
Philipp Reisner back in 2008. Johannes Berg had a different solution to
a similar problem, and that patch "won" in the end; so the require_context
thing never got merged. The whole history can be read at [0].

DRBD kept using these annotations anyway for a while. Nowadays, on a
modern unmodified sparse, they obviously do nothing, and they are hardly
used anymore anyway.

So, just remove the definitions of these macros.

[0] https://www.spinics.net/lists/linux-sparse/msg01150.html

Signed-off-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com>
Reviewed-by: Joel Colledge <joel.colledge@linbit.com>
Link: https://lore.kernel.org/r/20230113123538.144276-6-christoph.boehmwalder@linbit.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Böhmwalder 2023-01-13 13:35:35 +01:00 committed by Jens Axboe
parent 069182007d
commit 9cf766a457
1 changed files with 1 additions and 11 deletions
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12
drivers/block/drbd/drbd_int.h
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@ -40,16 +40,6 @@
#include "drbd_protocol.h"
#include "drbd_polymorph_printk.h"
#ifdef __CHECKER__
# define __protected_by(x) __attribute__((require_context(x,1,999,"rdwr")))
# define __protected_read_by(x) __attribute__((require_context(x,1,999,"read")))
# define __protected_write_by(x) __attribute__((require_context(x,1,999,"write")))
#else
# define __protected_by(x)
# define __protected_read_by(x)
# define __protected_write_by(x)
#endif
/* shared module parameters, defined in drbd_main.c */
#ifdef CONFIG_DRBD_FAULT_INJECTION
extern int drbd_enable_faults;
@ -775,7 +765,7 @@ struct drbd_device {
unsigned long flags;
/* configured by drbdsetup */
struct drbd_backing_dev *ldev __protected_by(local);
struct drbd_backing_dev *ldev;
sector_t p_size; /* partner's disk size */
struct request_queue *rq_queue;