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ANDROID: block: Prepare for preserving the zoned write order

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This patch does not change any functionality. This patch is a subset of
the following patch that is expected to be merged upstream soon:
https://lore.kernel.org/linux-block/20230407235822.1672286-3-bvanassche@acm.org/

Bug: 275581839
Bug: 277112517
Change-Id: I717d1c78233b92fd18297c81ef15335684da5d54
Signed-off-by: Bart Van Assche <bvanassche@google.com>
This commit is contained in:
Bart Van Assche 2023-04-12 09:24:39 -07:00 • committed by Carlos Llamas
parent 16107fbbff
commit f54a58c7d1
1 changed files with 11 additions and 15 deletions
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26
include/linux/blk-mq.h
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@ -173,23 +173,19 @@ struct request {
/*
* Three pointers are available for the IO schedulers, if they need
* more they have to dynamically allocate it. Flush requests are
* never put on the IO scheduler. So let the flush fields share
* space with the elevator data.
* Three pointers are available for IO schedulers. If they need
* more private data they have to allocate it dynamically.
*/
union {
struct {
struct io_cq *icq;
void *priv[2];
} elv;
struct {
struct io_cq *icq;
void *priv[2];
} elv;
struct {
unsigned int seq;
struct list_head list;
rq_end_io_fn *saved_end_io;
} flush;
};
struct {
unsigned int seq;
struct list_head list;
rq_end_io_fn *saved_end_io;
} flush;
union {
struct __call_single_data csd;