block: move internal_tag to same cache line as tag

Since we removed cmd_type, we now have a hole in the struct. Move the internal_tag member to the same cacheline as tag, since we use them at the same time. This doesn't fix the hole, just moves it elsewhere.

Jens Axboe committed 9 years ago

Commit d486f1f1 parent aebf5261 file · +3 −2Browse files

Showing the changes to include/linux/blkdev.h (1 of 1 file). Show all

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include/linux/blkdev.h+3−2

@@ -138,6 +138,9 @@ struct request { · 137 unmodified lines
138	138	int cpu;
139	139	unsigned int cmd_flags; /* op and common flags */
140	140	req_flags_t rq_flags;
	141	+
	142	+ int internal_tag;
	143	+
141	144	unsigned long atomic_flags;
142	145
143	146	/* the following two fields are internal, NEVER access directly */
@@ -209,8 +212,6 @@ struct request { · 65 unmodified lines
209	212
210	213	unsigned short ioprio;
211	214
212		− int internal_tag;
213		−
214	215	void special; / opaque pointer available for LLD use */
215	216
216	217	int errors;